Patent EP0304124A2 successfully refreshed from Google Patents.
EP0304124A2
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EP
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Elastomeric fibres, structures fashioned therefrom and elastomeric films
Assignee: Shell Internationale Research Maatschappij BV
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Filing: 1988-08-11
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Granted: —
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Expires: 2008-08-11
Abstract
Abstract An elastomeric fibre 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 4,000 to 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 10,000 to 200,000, a relatively low molecular weight polymer selected from the Group consisting of anionic styrene homopolymers, alpha-methylstyrene homopolymers, hydrogenated styrene, copolymers of alpha-methylstyrene and styrene and mixtures thereof and may contain a wax. In particularly preferred embodiments, the elastomeric fibre or film will contain at least one A-B-A triblock copolymer and an A-B′ diblock copolymer. In even more preferred embodiments, the elastomeric fibres or films will contain at least two A-B-A triblock copolymers and at least one A-B′ diblock copolymer.
Inventors
- 👤 Glenn Roy Himes
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 23:39
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/18; C08L; C08L53/00; C08L53/02; C08L53/025; D; D01; D01F; D01F6/00; D01F6/58; D04; D04H; D04H1/00; D04H1/40; D04H1/42; D04H1/4282; C08J2353/00; C08J2353/02
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
148 words
An elastomeric fibre or film comprising (i) 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 4,000 to 50,000 (A) and at least one polymeric block containing predominantly hydrogenated conjugated diolefin monomer units having a weight-average molecular weight within the range from 10,000 to 200,000 (B), (ii) from 5 parts to 50 parts, by weight, per 100 parts, by weight, of block copolymer of a relatively low molecular weight polymer selected from the Group consisting of homopolymers of anionic polystyrene, homopolymers of alpha-methylstyrene, hydrogenated polystyrene, and copolymers of alpha-methylstyrene and styrene, said relatively low molecular weight polymer having a weight-average molecular weight within the range from 1,000 to 17,000, and (iii) from 0 parts to 50 parts, by weight, per 100 parts, by weight, of block copolymer of a wax.
Claim 2
Dependent Claim
148 words
An elastomeric fibre or film comprising (i) 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 4,000 to 50,000 (A) and at least one polymeric block containing predominantly hydrogenated conjugated diolefin monomer units having a weight-average molecular weight within the range from 10,000 to 200,000 (B), (ii) from 5 parts to 50 parts, by weight, per 100 parts, by weight, of block copolymer of a relatively low molecular weight polymer selected from the Group consisting of homopolymers of anionic polystyrene, homopolymers of alpha-methylstyrene, hydrogenated polystyrene, and copolymers of alpha-methylstyrene and styrene, said relatively low molecular weight polymer having a weight-average molecular weight within the range from 1,000 to 17,000, and (iii) from 0 parts to 50 parts, by weight, per 100 parts, by weight, of block copolymer of a wax.
Claim 3
Dependent Claim
54 words
The elastomeric fibre or film of claim 1, wherein said polymeric blocks containing predominantly monoalkenyl aromatic hydrocarbon monomer units have a weight-average molecular weight within the range from 4,000 to 9,000 and said polymeric blocks containing predominantly conjugated diolefin monomer units have a weight- average molecular weight within the range from 30,000 to 90,000.
Claim 4
Dependent Claim
60 words
The elastomeric fibre or film of claim 1, wherein at least one of said polymeric blocks containing predominantly monoalkenyl aromatic hydrocarbon monomer units have a weight-average molecular weight within the range from 7,000 to 7,500 and at least one of said polymeric blocks containing predominantly conjugated diolefin monomer units have a molecular weight within the range from 33,000 to 38,000.
Claim 5
Dependent Claim
50 words
The elastomeric fibre or film of claim 3, wherein at least one of said polymeric blocks containing predominantly monoalkenyl aromatic hydrocarbon monomer units have a molecular weight of 7,200 and at least one of said polymeric blocks containing predominantly conjugated diolefin monomer units have a weight-average molecular weight of 35,000.
Claim 6
Dependent Claim
62 words
The elastomeric fibre or film of claim 1, wherein at least one of said polymeric blocks containing predominantly monoalkenyl aromatic hydrocarbon monomer units have a weight-average molecular weight within the range of from 5,000 to 6,000 and at least one of said polymeric blocks containing predominantly conjugated diolefin monomer units have a weight-average molecular weight within the range from 65,000 to 85,000.
Claim 7
Dependent Claim
52 words
The elastomeric fibre or elastomeric film of claim 5, wherein at least one of said polymeric blocks containing predominantly monoalkenyl aromatic hydrocarbon monomer units have a weight-average molecular weight of 5,300 and at least one of said polymeric blocks containing predominantly conjugated diolefin monomer units have a weight-average molecular weight of 73,000.
Claim 8
Dependent Claim
43 words
The elastomeric fibre or film of claim 1, which comprises in addition one or more block copolymers comprising a single polymeric block containing predominantly monoalkenyl aromatic hydrocarbon monomer units (A) and a single polymeric block containing predominantly, hydrogenated conjugated diolefin monomer units (B′).
Claim 9
Dependent Claim
56 words
The elastomeric fibre or film of claim 7, wherein said polymeric blocks containing predominantly monoalkenyl aromatic hydrocarbon monomer units have a weight-average molecular weight within the range of from 5,000 to 7,500 and said polymer blocks containing predominantly hydrogenated, conjugated diolefin monomer units have a weight-average molecular weight within the range of from 8,250 to 60,000.
Claim 10
Dependent Claim
45 words
9 . The elastomeric fibre or film of claim 8, wherein said polymeric blocks containing predominantly monoalkenyl aromatic hydrocarbon monomer units have a weight-average molecular weight of 5,300 and said polymeric blocks containing predominantly hydrogenated, conjugated diolefin monomers have a weight-average molecular weight of 36,500.
Claim 11
Dependent Claim
24 words
The elastomeric fibre of any one of claims 1-9 wherein said monoalkenyl aromatic hydrocarbon monomer is styrene and said conjugated diolefin monomer is butadiene.
Claim 12
Dependent Claim
123 words
The elastomeric fibre or film of claims 1-10, comprising two A-B-A triblock copolymers, the first A-B-A triblock copolymer having A polymer blocks with a weight-average molecular weight within the range from 5,000 to 9,000 and B polymeric blocks having a weight-average molecular weight within the range from 30,000 to 50,000, the second A-B-A triblock copolymer having A polymeric blocks with weight-average molecular weights within the range from 4,000 to 7,000 and B polymeric blocks having a weight-average molecular weight within the range from 55,000 to 90,000, and wherein said A-B′ diblock copolymer has A polymeric blocks having weight-average molecular weights within the range from 4,000 to 9,000 and B′ polymeric blocks having a weight-average molecular weight within the range from 7,500 to 67,500.
Claim 13
Dependent Claim
91 words
The elastomeric fibre or film of claim 11, wherein said first A-B-A triblock copolymer has A polymeric blocks having a weight-average molecular weight of 7,200 and B polymeric blocks having a weight-average molecular weight of 35,000 and second A-B-A triblock copolymer having A polymeric blocks with a weight-average molecular weight of 5,300 and B polymeric blocks having a weight-average molecular weight of 73,000, and wherein said A-B′ diblock copolymer has A polymeric blocks having a weight-average molecular weight of 5,300 and B′ polymeric blocks having a weight-average molecular weight of 36,500.
Claim 14
Dependent Claim
72 words
The elastomeric fibre or film according to any one of the claims 1-12, wherein said relatively low molecular weight polymer is present at a concentration within the range from 8 parts to 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 0 parts to 10 parts, by weight, per 100 parts, by weight, combined block copolymer.
Claim 15
Dependent Claim
66 words
The elastomeric fibre or film of claim 13, wherein said relatively low molecular weight polymer is present at a concentration within the range from 8 parts to 20 parts, by weight, per 100 parts, by weight, combined block copolymer and said wax is present at a concentration within the range from 0 parts to 5 parts, by weight, per 100 parts, by weight, combined block copolymer.
Claim 16
Dependent Claim
19 words
The elastomeric fibre or film of claim 14, wherein said relatively low molecular weight polymer is an anionic polystyrene.
Claim 17
Dependent Claim
24 words
The elastomeric fibre or film of claim 15, wherein said anionic polystyrene has a weight-average molecular weight within the range from 1,900 to 4,500.
Claim 18
Dependent Claim
16 words
A nonwoven structure prepared with an elastomeric fibre according to any one of the claims 1-16.
References Cited (Backward Citations)
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