US4892903A
Expired / Lapsed
US
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Elastomeric fibers, structures fashioned therefrom and elastomeric films
Assignee: Kraton Polymers US LLC
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Filing: 1987-08-20
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Granted: 1990-01-09
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Expires: 2007-08-20
Abstract
Abstract An elastic fiber or film prepared from a composition comprising at least one block copolymer containing at least two polymeric blocks containing predominantly monoalkenyl aromatic hydrocarbon monomer units having a weight-average molecular weight within the range from about 4,000 to about 50,000 and at least one polymeric block containing predominantly hydrogenated conjugated diolefin monomer units having a weight-average molecular weight within the range from about 10,000 to about 200,000, a relatively low molecular weight polymer selected from the Group consisting of anionic styrene homopolymers, α-methylstyrene homopolymers, hydrogenated styrene, copolymers of α-methylstyrene and styrene and mixtures thereof and may contain a wax. In particularly preferred embodiments, the elastic fiber or film will contain at least one A-B-A triblock copolymer and an A-B' diblock copolymer. In even more preferred embodiments, the elastic fibers or films will contain at least two A-B-A triblock copolymers and at least one A-B' diblock copolymer. In the even more preferred embodiments, the first of the A-B-A triblock copolymers will have A polymeric blocks having a weight-average molecular weight within the range from about 5,000 to about 9,000 and B polymeric blocks having weight-average molecular weights within the range from about 30,000 to about 50,000 and the second of the A-B-A triblock copolymers will have A polymeric blocks having weight-average molecular weights within the range from about 4,000 to about 7,000 and B polymeric blocks having weight-average molecular weights within the range from about 55,000 to about 90,000. The A-B' diblock will, in these even more preferred embodiments, have A polymeric blocks having weight-average molecular weights within the range from about 4,000 to about 9,000 and B' polymeric blocks having a weight-average molecular weight within the range from about 13,750 to about 67,500. The elastic fibers may be prepared using any of the methods known in the prior art including melt blowing. The elastic films may be used to prepare elastic articles of manufacture. The fibers and films may be used immediately or directly after preparation in the production of the desired product or products.
Inventors
- 👤 Glenn R. Himes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:00
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/18; C08L; C08L53/00; C08L53/02; C08L53/025; D; D01; D01F; D01F6/00; D01F6/44; D01F6/46; D01F6/56; C08J2353/00; C08J2353/02
Claims Analysis
Total Claims: 53
Claim 1
Independent Claim
174 words
An elastomeric fiber comprising at least one block copolymer comprising at least two polymeric blocks containing predominantly monoalkenyl aromatic hydrocarbon monomer units having a weight-average molecular weight within the range from about 4,000 to about 50,000 and at least one polymeric block containing predominantly conjugated diolefin monomer units which have been hydrogenated so as to saturate at least about 80% of the ethylenic unsaturation in the polymer block after its preparation and having a weight-average molecular weight within the range from about 10,000 to about 200,000, from about 5 parts to about 50 parts, by weight, per 100 parts, by weight, of block copolymer of a polymer selected from the Group consisting of homopolymers of anionic polystyrene, homopolymers of α-methylstyrene, hydrogenated polystyrene, and copolymers of α-methylstyrene and styrene, said polymer selected from said group having a weight-average molecular weight within the range from about 1,000 to about 17,000 and from about 0 parts to about 50 parts, by weight, per 100 parts, by weight, of combined block copolymer of a parraffinic and/or microcrystalline wax.
Claim 2
Dependent Claim
174 words
An elastomeric fiber comprising at least one block copolymer comprising at least two polymeric blocks containing predominantly monoalkenyl aromatic hydrocarbon monomer units having a weight-average molecular weight within the range from about 4,000 to about 50,000 and at least one polymeric block containing predominantly conjugated diolefin monomer units which have been hydrogenated so as to saturate at least about 80% of the ethylenic unsaturation in the polymer block after its preparation and having a weight-average molecular weight within the range from about 10,000 to about 200,000, from about 5 parts to about 50 parts, by weight, per 100 parts, by weight, of block copolymer of a polymer selected from the Group consisting of homopolymers of anionic polystyrene, homopolymers of α-methylstyrene, hydrogenated polystyrene, and copolymers of α-methylstyrene and styrene, said polymer selected from said group having a weight-average molecular weight within the range from about 1,000 to about 17,000 and from about 0 parts to about 50 parts, by weight, per 100 parts, by weight, of combined block copolymer of a parraffinic and/or microcrystalline wax.
Claim 3
Dependent Claim
55 words
The elastomeric fiber of claim 1 wherein said polymeric blocks containing predominantly monoalkenyl aromatic hydrocarbon monomer units have a weight-average molecular weight within the range from about 5,000 to about 9,000 and said polymeric blocks containing predominantly conjugated diolefin monomer units have a weight-average molecular weight within the range from about 30,000 to about 50,000.
Claim 4
Dependent Claim
54 words
The elastomeric fiber of claim 1 wherein said polymeric blocks containing predominantly monoalkenyl aromatic hydrocarbon monomer units have a weight-average molecular weight within the range from about 7,000 to about 7,500 and said polymeric blocks containing predominantly conjugated diolefin monomer units have a molecular weight within the range from about 33,000 to about 38,000.
Claim 5
Dependent Claim
41 words
The elastomeric fiber of claim 1 wherein said polymeric blocks containing predominantly monoalkenyl aromatic hydrocarbon monomer units have a molecular weight of about 7,200 and said polymeric blocks containing predominantly conjugated diolefin monomer units have a molecular weight of about 35,000.
Claim 6
Dependent Claim
21 words
The elastomeric fiber of claim 4 wherein said monoalkenyl aromatic hydrocarbon monomer is styrene and said conjugated diolefin monomer is butadiene.
Claim 7
Dependent Claim
255 words
An elastomeric fiber comprising at least one A-B-A triblock copolymer wherein A is a polymeric block containing predominantly monoalkenyl aromatic hydrocarbon units having a weight-average molecular weight within the range from about 4,000 to about 50,000 and B is a polymeric block containing predominantly conjugated diolefin monomer units which have been hydrogenated so as to saturate at least about 80% of the ethylenic unsaturation in the polymer block after its preparation and having a weight-average molecular weight within the range from about 10,000 to about 200,000, and A-B' diblock copolymer wherein A is a polymeric block containing predominantly monoalkenyl aromatic hydrocarbon monomer units having a weight-average molecular weight within the range from about 4,000 to about 50,000 and B' is a polymeric block containing predominantly conjugated diolefin monomer units which have been hydrogenated so as to saturate at least about 80% of the ethylenic unsaturation in the polymer block after its preparation and having a weight-average molecular weight within the range from about 2,500 to about 150,000, from about 5 parts to about 50 parts, by weight, per 100 parts, by weight, of combined block copolymer of a polymer selected from the group consisting of anionic polystyrene, α-methylstyrene homopolymers, hydrogenated polystyrene (styrene), copolymers of α-methylstyrene and styrene and mixtures thereof, said polymer selected from said group having a weight-average molecular weight within the range from about 1,000 to about 17,000 and from about 0 parts to about 50 parts, by weight, per 100 parts, by weight, combined block copolymer of a paraffinic and/or microcrystalline wax.
Claim 8
Dependent Claim
255 words
An elastomeric fiber comprising at least one A-B-A triblock copolymer wherein A is a polymeric block containing predominantly monoalkenyl aromatic hydrocarbon units having a weight-average molecular weight within the range from about 4,000 to about 50,000 and B is a polymeric block containing predominantly conjugated diolefin monomer units which have been hydrogenated so as to saturate at least about 80% of the ethylenic unsaturation in the polymer block after its preparation and having a weight-average molecular weight within the range from about 10,000 to about 200,000, and A-B' diblock copolymer wherein A is a polymeric block containing predominantly monoalkenyl aromatic hydrocarbon monomer units having a weight-average molecular weight within the range from about 4,000 to about 50,000 and B' is a polymeric block containing predominantly conjugated diolefin monomer units which have been hydrogenated so as to saturate at least about 80% of the ethylenic unsaturation in the polymer block after its preparation and having a weight-average molecular weight within the range from about 2,500 to about 150,000, from about 5 parts to about 50 parts, by weight, per 100 parts, by weight, of combined block copolymer of a polymer selected from the group consisting of anionic polystyrene, α-methylstyrene homopolymers, hydrogenated polystyrene (styrene), copolymers of α-methylstyrene and styrene and mixtures thereof, said polymer selected from said group having a weight-average molecular weight within the range from about 1,000 to about 17,000 and from about 0 parts to about 50 parts, by weight, per 100 parts, by weight, combined block copolymer of a paraffinic and/or microcrystalline wax.
Claim 9
Dependent Claim
138 words
The elastomeric fiber of claim 6 wherein said fiber comprises two A-B-A triblock copolymers, the first A-B-A triblock copolymer having A polymer blocks with a number average molecular weight within the range from about 5,000 to about 9,000 and B polymeric blocks having a weight average molecular weight within the range from about 30,000 to about 50,000, the second A-B-A triblock copolymer having A polymeric blocks with weight-average molecular weights within the range from about 4,000 to about 7,000 and B polymeric blocks having a weight-average molecular weight within the range from about 55,000 to about 90,000, and wherein said A-B' diblock copolymer has A polymeric blocks having weight-average molecular weights within the range from about 4,000 to about 9,000 and B' polymeric blocks having a weight-average molecular weight within the range from about 7,500 to about 67,500.
Claim 10
Dependent Claim
132 words
The elastomeric fiber of claim 7 wherein said first A-B-A triblock copolymer has A polymeric blocks having a weight-average molecular weight within the range from about 7,000 to about 7,500 and B polymeric blocks having a weight-average molecular weight within the range from about 33,000 to about 38,000, and said second A-B-A triblock copolymer has A polymeric blocks with a weight-average molecular weight within the range from about 5,000 to about 6,000 and B polymeric blocks having a weight-average molecular weight within the range from about 65,000 to about 80,000, and wherein said A-B' diblock copolymer has A polymeric blocks having weight-average molecular weights within the range from about 5,000 to about 7,500 and said B' polymeric blocks having a weight-average molecular weight within the range from about 8,250 to about 60,000.
Claim 11
Dependent Claim
95 words
The elastomeric fiber of claim 7 wherein said first A-B-A triblock copolymer has A polymeric blocks having a weight-average molecular weight of about 7,200 and B polymeric blocks having a weight-average molecular weight of about 35,000 and second A-B-A triblock copolymer having A polymeric blocks with a weight-average molecular weight of about 5,300 and B polymeric blocks having a weight-average molecular weight of about 73,000, and wherein said A-B' diblock copolymer has A polymeric blocks having a weight-average molecular weight of about 5,300 and B' polymeric blocks having a weight-average molecular weight of about 36,500.
Claim 12
Dependent Claim
21 words
The elastomeric fiber of claim 9 wherein said monoalkenyl aromatic hydrocarbon monomer is styrene and said conjugated diolefin monomer is butadiene.
Claim 13
Dependent Claim
69 words
The elastomeric fiber of claim 10 wherein said polymer selected from said group is present at a concentration within the range from about 8 parts to about 35 parts, by weight, per 100 parts, by weight, of combined block copolymer and said wax is present at a concentration within the range from about 0 parts to about 10 parts, by weight, per 100 parts, by weight, combined block copolymer.
Claim 14
Dependent Claim
68 words
The elastomeric fiber of claim 10 wherein said polymer selected from said group is present at a concentration within the range from about 8 parts to about 20 parts, by weight, per 100 parts, by weight, combined block copolymer and said wax is present at a concentration within the range from about 0 parts to about 5 parts, by weight, per 100 parts, by weight, combined block copolymer.
Claim 15
Dependent Claim
17 words
The elastomeric fiber of claim 12 wherein said polymer selected from said group is an anionic polystyrene.
Claim 16
Dependent Claim
24 words
The elastomeric fiber of claim 13 wherein said anionic polystyrene has a weight-average molecular weight within the range from about 1,900 to about 4,500.
Claim 17
Dependent Claim
177 words
A nonwoven structure prepared with an elastomeric fiber comprising at least one block copolymer comprising at least two polymeric blocks containing predominantly monoalkenyl aromatic hydrocarbon monomer units having a weight-average molecular weight within the range from about 4,000 to about 50,000 and at least one polymeric block containing predominantly conjugated diolefin monomer units which have been hydrogenated so as to saturate at least about 80% of the ethylenic unsaturation in the polymer block after its preparation and having a weight-average molecular weight within the range from about 10,000 to about 200,000, from about 5 parts to about 50 parts, by weight, per 100 parts, by weight, of block copolymer of a polymer selected from the Group consisting of anionic polystyrene, homopolymers of α-methylstyrene, hydrogenated polystyrene, and copolymers of α-methylstyrene and styrene, said polymer selected from said group having a weight-average molecular weight within the range from about 1,000 to about 17,000 and from about 0 parts to about 50 parts, by weight, per 100 parts, by weight, of combined block copolymer of a paraffinic and/or microcrystalline wax.
Claim 18
Dependent Claim
177 words
A nonwoven structure prepared with an elastomeric fiber comprising at least one block copolymer comprising at least two polymeric blocks containing predominantly monoalkenyl aromatic hydrocarbon monomer units having a weight-average molecular weight within the range from about 4,000 to about 50,000 and at least one polymeric block containing predominantly conjugated diolefin monomer units which have been hydrogenated so as to saturate at least about 80% of the ethylenic unsaturation in the polymer block after its preparation and having a weight-average molecular weight within the range from about 10,000 to about 200,000, from about 5 parts to about 50 parts, by weight, per 100 parts, by weight, of block copolymer of a polymer selected from the Group consisting of anionic polystyrene, homopolymers of α-methylstyrene, hydrogenated polystyrene, and copolymers of α-methylstyrene and styrene, said polymer selected from said group having a weight-average molecular weight within the range from about 1,000 to about 17,000 and from about 0 parts to about 50 parts, by weight, per 100 parts, by weight, of combined block copolymer of a paraffinic and/or microcrystalline wax.
Claim 19
Dependent Claim
55 words
The nonwoven structure of claim 15 wherein said polymeric blocks containing predominantly monoalkenyl aromatic hydrocarbon monomer units have a weight-average molecular weight within the range from about 5,000 to about 9,000 and said polymeric blocks containing predominantly conjugated diolefin monomer units have a weight-average molecular weight within the range from about 30,000 to about 50,000.
Claim 20
Dependent Claim
54 words
The nonwoven structure of claim 15 wherein said polymeric blocks containing predominantly monoalkenyl aromatic hydrocarbon monomer units have a weight-average molecular weight within the range from about 7,000 to about 7,500 and said polymeric blocks containing predominantly conjugated diolefin monomer units have a molecular weight within the range from about 33,000 to about 38,000.
Claim 21
Dependent Claim
41 words
The nonwoven structure of claim 15 wherein said polymeric blocks containing predominantly monoalkenyl aromatic hydrocarbon monomer units have a molecular weight of about 7,200 and said polymeric blocks containing predominantly conjugated diolefin monomer units have a molecular weight of about 35,000.
Claim 22
Dependent Claim
21 words
The nonwoven structure of claim 18 wherein said monoalkenyl aromatic hydrocarbon monomer is styrene and said conjugated diolefin monomer is butadiene.
Claim 23
Dependent Claim
259 words
A nonwoven structure prepared with an elastomeric fiber comprising at least one A-B-A triblock copolymer wherein A is a polymeric block containing predominantly monoalkenyl aromatic hydrocarbon units having a weight-average molecular weight within the range from about 4,000 to about 50,000 and B is a polymeric block containing predominantly conjugated diolefin monomer units which have been hydrogenated so as to saturate at least about 80% of the ethylenic unsaturation in the polymer block after its preparation and having a weight-average molecular weight within the range from about 10,000 to about 200,000, and A-B' diblock wherein A is a polymeric block containing predominantly monoalkenyl aromatic hydrocarbon monomer units having a weight-average molecular weight within the range from about 4,000 to about 50,000 and B' is a polymeric block containing predominantly conjugated diolefin monomer units which have been hydrogenated so as to saturate at least about 80% of the ethylenic unsaturation in the polymer block after its preparation and having a weight-average molecular weight within the range from about 2,500 to about 150,000, from about 5 parts to about 50 parts, by weight, per 100 parts, by weight, of combined block copolymer of a polymer selected from the group consisting of anionic styrene homopolymers, α-methylstyrene homopolymers, hydrogenated polystyrene, copolymers of α-methylstyrene and styrene and mixtures thereof, said polymer selected from said group having a weight-average molecular weight within the range from about 1,000 to about 17,000 and from about 0 parts to about 50 parts, by weight, per 100 parts, by weight, combined block copolymer of a paraffinic and/or microcrystalline wax.
Claim 24
Dependent Claim
259 words
A nonwoven structure prepared with an elastomeric fiber comprising at least one A-B-A triblock copolymer wherein A is a polymeric block containing predominantly monoalkenyl aromatic hydrocarbon units having a weight-average molecular weight within the range from about 4,000 to about 50,000 and B is a polymeric block containing predominantly conjugated diolefin monomer units which have been hydrogenated so as to saturate at least about 80% of the ethylenic unsaturation in the polymer block after its preparation and having a weight-average molecular weight within the range from about 10,000 to about 200,000, and A-B' diblock wherein A is a polymeric block containing predominantly monoalkenyl aromatic hydrocarbon monomer units having a weight-average molecular weight within the range from about 4,000 to about 50,000 and B' is a polymeric block containing predominantly conjugated diolefin monomer units which have been hydrogenated so as to saturate at least about 80% of the ethylenic unsaturation in the polymer block after its preparation and having a weight-average molecular weight within the range from about 2,500 to about 150,000, from about 5 parts to about 50 parts, by weight, per 100 parts, by weight, of combined block copolymer of a polymer selected from the group consisting of anionic styrene homopolymers, α-methylstyrene homopolymers, hydrogenated polystyrene, copolymers of α-methylstyrene and styrene and mixtures thereof, said polymer selected from said group having a weight-average molecular weight within the range from about 1,000 to about 17,000 and from about 0 parts to about 50 parts, by weight, per 100 parts, by weight, combined block copolymer of a paraffinic and/or microcrystalline wax.
Claim 25
Dependent Claim
138 words
The nonwoven structure of claim 20 wherein said elastomeric fiber comprises two A-B-A triblock copolymers, the first A-B-A triblock copolymer having A polymeric blocks with a number average molecular weight within the range from about 5,000 to about 9,000 and B polymeric blocks having a weight-average molecular weight within the range from about 30,000 to about 50,000, the second A-B-A triblock copolymer having A polymeric blocks with weight-average molecular weights within the range from about 4,000 to about 7,000 and B polymeric blocks having a weight-average molecular weight within the range from about 55,000 to about 90,000, and wherein said A-B' diblock copolymer has A polymeric blocks having weight-average molecular weights within the range from about 4,000 to about 9,000 and B' polymeric blocks having a weight-average molecular weight within the range from about 8,500 to about 67,500.
Claim 26
Dependent Claim
132 words
The nonwoven structure of claim 21 wherein said first A-B-A triblock copolymer has A polymeric blocks having a weight-average molecular weight within the range from about 7,000 to about 7,500 and B polymeric blocks having a weight-average molecular weight within the range from about 33,000 to about 38,000, and said second A-B-A triblock copolymer has A polymeric blocks with a weight-average molecular weight within the range from about 5,000 to about 6,000 and B polymeric blocks having a weight-average molecular weight within the range from about 65,000 to about 80,000, and wherein said A-B' diblock copolymer has A polymeric blocks having weight-average molecular weights within the range from about 5,000 to about 7,500 and said B' polymeric blocks having a weight-average molecular weight within the range from about 8,250 to about 60,000.
Claim 27
Dependent Claim
95 words
The nonwoven structure of claim 21 wherein said first A-B-A triblock copolymer has A polymeric blocks having a weight-average molecular weight of about 7,200 and B polymeric blocks having a weight-average molecular weight of about 35,000 and second A-B-A triblock copolymer having A polymeric blocks with a weight-average molecular weight of about 5,300 and B polymeric blocks having a weight-average molecular weight of about 73,000, and wherein said A-B' diblock copolymer has A polymeric blocks having a weight-average molecular weight of about 5,300 and B' polymeric blocks having a weight-average molecular weight of about 36,500.
Claim 28
Dependent Claim
21 words
The nonwoven structure of claim 23 wherein said monoalkenyl aromatic hydrocarbon monomer is styrene and said conjugated diolefin monomer is butadiene.
Claim 29
Dependent Claim
69 words
The nonwoven structure of claim 24 wherein said polymer selected from said group is present at a concentration within the range from about 8 parts to about 35 parts, by weight, per 100 parts, by weight, of combined block copolymer and said wax is present at a concentration within the range from about 0 parts to about 10 parts, by weight, per 100 parts, by weight, combined block copolymer.
Claim 30
Dependent Claim
68 words
The nonwoven structure of claim 24 wherein said polymer selected from said group is present at a concentration within the range from about 8 parts to about 20 parts, by weight, per 100 parts, by weight, combined block copolymer and said wax is present at a concentration within the range from about 0 parts to about 5 parts, by weight, per 100 parts, by weight, combined block copolymer.
Claim 31
Dependent Claim
17 words
The nonwoven structure of claim 26 wherein said polymer selected from said group is an anionic polystyrene.
Claim 32
Dependent Claim
24 words
The nonwoven structure of claim 27 wherein said anionic polystyrene has a weight-average molecular weight within the range from about 1,900 to about 4,500.
Claim 33
Dependent Claim
173 words
An elastomeric film comprising at least one block copolymer comprising at least two polymeric blocks containing predominantly monoalkenyl aromatic hydrocarbon monomer units having a weight-average molecular weight within the range from about 4,000 to about 50,000 and at least one polymeric block containing predominantly conjugated diolefin monomer units which have been hydrogenated so as to saturate at least about 80% of the ethylenic unsaturation in the polymer block after its preparation and having a weight-average molecular weight within the range from about 10,000 to about 200,000, from about 5 parts to about 50 parts, by weight, per 100 parts, by weight, of block copolymer of a polymer selected from the Group consisting of homopolymers of anionic styrene, homopolymers of α-methylstyrene, hydrogenated polystyrene, and copolymers of α-methylstyrene and styrene, said polymer selected from said group having a weight-average molecular weight within the range from about 1,000 to about 17,000 and from about 0 parts to about 50 parts, by weight, per 100 parts, by weight, of block copolymer of a paraffinic and/or microcrystalline wax.
Claim 34
Dependent Claim
173 words
An elastomeric film comprising at least one block copolymer comprising at least two polymeric blocks containing predominantly monoalkenyl aromatic hydrocarbon monomer units having a weight-average molecular weight within the range from about 4,000 to about 50,000 and at least one polymeric block containing predominantly conjugated diolefin monomer units which have been hydrogenated so as to saturate at least about 80% of the ethylenic unsaturation in the polymer block after its preparation and having a weight-average molecular weight within the range from about 10,000 to about 200,000, from about 5 parts to about 50 parts, by weight, per 100 parts, by weight, of block copolymer of a polymer selected from the Group consisting of homopolymers of anionic styrene, homopolymers of α-methylstyrene, hydrogenated polystyrene, and copolymers of α-methylstyrene and styrene, said polymer selected from said group having a weight-average molecular weight within the range from about 1,000 to about 17,000 and from about 0 parts to about 50 parts, by weight, per 100 parts, by weight, of block copolymer of a paraffinic and/or microcrystalline wax.
Claim 35
Dependent Claim
55 words
The elastomeric film of claim 29 wherein said polymeric blocks containing predominantly monoalkenyl aromatic hydrocarbon monomer units have a weight-average molecular weight within the range from about 5,000 to about 9,000 and said polymeric blocks containing predominantly conjugated diolefin monomer units have a weight-average molecular weight within the range from about 30,000 to about 50,000.
Claim 36
Dependent Claim
54 words
The elastomeric film of claim 29 wherein said polymeric blocks containing predominantly monoalkenyl aromatic hydrocarbon monomer units have a weight-average molecular weight within the range from about 7,000 to about 7,500 and said polymeric blocks containing predominantly conjugated diolefin monomer units have a molecular weight within the range from about 33,000 to about 38,000.
Claim 37
Dependent Claim
41 words
The elastomeric film of claim 29 wherein said polymeric blocks containing predominantly monoalkenyl aromatic hydrocarbon monomer units have a molecular weight of about 7,200 and said polymeric blocks containing predominantly conjugated diolefin monomer units have a molecular weight of about 35,000.
Claim 38
Dependent Claim
21 words
The elastomeric film of claim 32 wherein said monoalkenyl aromatic hydrocarbon monomer is styrene and said conjugated diolefin monomer is butadiene.
Claim 39
Dependent Claim
255 words
An elastomeric film comprising at least one A-B-A triblock ocpolymer wherein A is a polymeric block containign predominantly monoalkenyl aromatic hydrocarbon units having a weight-average molecular weight within the range from about 4,000 to about 50,000 and B is a polymeric block containing predominantly conjugated diolefin monomer units which have been hydrogenated so as to saturate at least about 80% of the ethylenic unsaturation in the polymer block after its preparation and having a weight-average molecular weight within the range from about 10,000 to about 200,000, an A-B' diblock copolymer wherein A is a polymeric block containing predominantly monoalkenyl aromatic hydrocarbon monomer units having a weight-average molecular weight within the range from about 4,000 to about 50,000 and B' is a polymeric block containing predominantly conjugated diolefin monomer units which have been hydrogenated so as to saturate at least about 80% of the ethylenic unsaturation in the polymer block after its preparation and having a weight-average molecular weight within the range from about 2,500 to about 150,000, from about 5 parts to about 50 parts, by weight, per 100 parts, by weight, of combined block copolymer of a polymer selected from the group consisting of anionic styrene homopolymers, α-methylstyrene homopolymers, hydrogenated polystyrene, copolymers of α-methylstyrene and styrene and mixtures thereof, said polymer selected from said group having a weight-average molecular weight within the range from about 1,000 to about 17,000 and from about 0 parts to about 50 parts, by weight, per 100 parts, by weight, combined block copolymer of a paraffinic and/or microcrystalline wax.
Claim 40
Dependent Claim
255 words
An elastomeric film comprising at least one A-B-A triblock ocpolymer wherein A is a polymeric block containign predominantly monoalkenyl aromatic hydrocarbon units having a weight-average molecular weight within the range from about 4,000 to about 50,000 and B is a polymeric block containing predominantly conjugated diolefin monomer units which have been hydrogenated so as to saturate at least about 80% of the ethylenic unsaturation in the polymer block after its preparation and having a weight-average molecular weight within the range from about 10,000 to about 200,000, an A-B' diblock copolymer wherein A is a polymeric block containing predominantly monoalkenyl aromatic hydrocarbon monomer units having a weight-average molecular weight within the range from about 4,000 to about 50,000 and B' is a polymeric block containing predominantly conjugated diolefin monomer units which have been hydrogenated so as to saturate at least about 80% of the ethylenic unsaturation in the polymer block after its preparation and having a weight-average molecular weight within the range from about 2,500 to about 150,000, from about 5 parts to about 50 parts, by weight, per 100 parts, by weight, of combined block copolymer of a polymer selected from the group consisting of anionic styrene homopolymers, α-methylstyrene homopolymers, hydrogenated polystyrene, copolymers of α-methylstyrene and styrene and mixtures thereof, said polymer selected from said group having a weight-average molecular weight within the range from about 1,000 to about 17,000 and from about 0 parts to about 50 parts, by weight, per 100 parts, by weight, combined block copolymer of a paraffinic and/or microcrystalline wax.
Claim 41
Dependent Claim
138 words
The elastomeric film of claim 34 wherein said elastomeric film comprises two A-B-A triblock copolymers, the first A-B-A triblock copolymer having A polymeric blocks with a number average molecular weight within the range from about 5,000 to about 9,000 and B polymeric blocks having a weight-average molecular weight within the range from about 30,000 to about 50,000, the second A-B-A triblock copolymer having A polymeric blocks with weight-average molecular weights within the range from about 4,000 to about 7,000 and B polymeric blocks having a weight-average molecular weight within the range from about 55,000 to about 90,000, and wherein said A-B' diblock copolymer has A polymeric blocks having weight-average molecular weights within the range from about 4,000 to about 9,000 and B' polymeric blocks having a weight-average molecular weight within the range from about 7,500 to about 67,500.
Claim 42
Dependent Claim
132 words
The elastomeric film of claim 35 wherein said first A-B-A triblock copolymer has A polymeric blocks having a weight-average molecular weight within the range from about 7,000 to about 7,500 and B polymeric blocks having a weight-average molecular weight within the range from about 33,000 to about 38,000, and said second A-B-A triblock copolymer has A polymeric blocks with a weight-average molecular weight within the range from about 5,000 to about 6,000 and B polymeric blocks having a weight-average molecular weight within the range from about 65,000 to about 80,000, and wherein said A-B' diblock copolymer has A polymeric blocks having weight-average molecular weights within the range from about 5,000 to about 7,500 and said B' polymeric blocks having a weight-average molecular weight within the range from about 8,250 to about 60,000.
Claim 43
Dependent Claim
95 words
The elastomeric film of claim 35 wherein said first A-B-A triblock copolymer has A polymeric blocks having a weight-average molecular weight of about 7,200 and B polymeric blocks having a weight-average molecular weight of about 35,000 and second A-B-A triblock copolymer having A polymeric blocks with a weight-average molecular weight of about 5,300 and B polymeric blocks having a weight-average molecular weight of about 73,000, and wherein said A-B' diblock copolymer has A polymeric blocks having a weight-average molecular weight of about 5,300 and B' polymeric blocks having a weight-average molecular weight of about 36,500.
Claim 44
Dependent Claim
21 words
The elastomeric film of claim 37 wherein said monoalkenyl aromatic hydrocarbon monomer is styrene and said conjugated diolefin monomer is butadiene.
Claim 45
Dependent Claim
69 words
The elastomeric film of claim 38 wherein said relatively low molecular weight polymer is present at a concentration within the range from about 8 parts to about 35 parts, by weight, per 100 parts, by weight, of combined block copolymer and said wax is present at a concentration within the range from about 0 parts to about 10 parts, by weight, per 100 parts, by weight, combined block copolymer.
Claim 46
Dependent Claim
66 words
The elastomeric film of claim 38 wherein said polymer selected from said group is present at a concentration within the range from about 8 parts to about 20 parts, by weight, per 100 parts, by weight, combined block copolymer and said wax is present at a concentration within the range 0 parts to about 5 parts, by weight, per 100 parts, by weight, combined block copolymer.
Claim 47
Dependent Claim
17 words
The elastomeric film of claim 40 wherein said polymer selected from said group is an anionic polystyrene.
Claim 48
Dependent Claim
24 words
The elastomeric film of claim 41 wherein said anionic polystyrene has a weight-average molecular weight within the range from about 1,900 to about 4,500.
Claim 49
Dependent Claim
34 words
The elastomeric fiber of claim 1 wherein the blocks containing predominantly conjugated diolefin monomer units have been hydrogenated so as to saturate at least about 95% of the initial ethylenic unsaturation in the polymer.
Claim 50
Dependent Claim
38 words
The elastomeric fiber of claim 6 wherein the polymeric blocks containing predominantly conjugated diolefin monomer units have been hydrogenated so as to saturate at least about 95% of the ethylenic unsaturation in the polymer block after its preparation.
Claim 51
Dependent Claim
37 words
The non-woven structure of claim 15 wherein the polymeric blocks containing predominantly conjugated diolefin monomer units have been hydrogenated so as to saturate at least 95% of the ethylenic unsaturation in the polymer blocks after their preparation.
Claim 52
Dependent Claim
37 words
The elastomeric film of claim 29 wherein the polymeric blocks containing predominantly conjugated diolefin monomer units have been hydrogenated so as to saturate at least 95% of the ethylenic unsaturation contained in these blocks after their preparation.
Claim 53
Dependent Claim
37 words
The elastomeric film of claim 34 wherein the polymeric blocks containing predominantly conjugated diolefin monomer units have been hydrogenated so as to saturate at least 95% of the ethylenic unsaturation contained in these blocks after their preparation.
References Cited (Backward Citations)
US4582871A
Cited
US4716183A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-01-08 | 1993-07-10 | 1994-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-08 | 1997-07-10 | 1998-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-08 | 2001-07-10 | 2002-01-09 | $7700.00 | Window Closed / Lapsed |