US4543386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vinylidene chloride copolymer aqueous latex composition
Assignee: Imperial Chemical Industries Ltd
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Filing: 1984-02-07
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Granted: 1985-09-24
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Expires: 2004-02-07
Abstract
Abstract Aqueous latex composition for use as a contact adhesive comprising a mixture of an amorphous copolymer A and an amorphous copolymer B where A comprises units of vinylidene chloride, an internally plasticizing comonomer like 2-ethylhexyl acrylate or n-butyl acrylate, optionally vinyl chloride and optionally a copolymerizable acid, and has Tg in the range -50 DEG to <0 DEG C., and B comprises units of vinylidene chloride, an alkyl acrylate and/or methacrylate or certain other comonomers, optionally vinyl chloride, and optionally a copolymerizable acid, and has a Tg in the range 0 DEG to 30 DEG C.
Inventors
- 👤 John C. Padget
- 👤 Donald H. McIlrath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:59
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/08; C09; C09J; C09J127/00; C09J127/02; C09J127/04; C09J127/08; C08L2205/00; C08L2205/02; C08L2666/00; C08L2666/02; C08L2666/04
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
152 words
An aqueous latex composition comprising at least one copolymer A and at least one copolymer B, characterized in that A is an amorphous copolymer comprising polymerised units of vinylidene chloride and at least one internally plasticising comonomer; and which copolymer has a Tg in the range from -50 to <0° C; and B is an amorphous copolymer comprising polymerised units of vinylidene chloride and at least one comonomer selected from alkyl acrylates and methacrylates having 1 to 12 carbon atoms in the alkyl group, alkoxyalkyl acrylates and methacrylates having 1 to 12 carbon atoms in the alkyl groups, styrene, acrylonitrile, vinyl acetate, and vinyl ethyl ether; and which copolymer has a Tg in the range 0° to 30° C.; and wherein the dry weight ratio of the at least one copolymer A: the at least one copolymer B is from 95:5 to 10:90, and wherein said composition provides contactable layers after drying.
Claim 2
Dependent Claim
152 words
An aqueous latex composition comprising at least one copolymer A and at least one copolymer B, characterized in that A is an amorphous copolymer comprising polymerised units of vinylidene chloride and at least one internally plasticising comonomer; and which copolymer has a Tg in the range from -50 to <0° C; and B is an amorphous copolymer comprising polymerised units of vinylidene chloride and at least one comonomer selected from alkyl acrylates and methacrylates having 1 to 12 carbon atoms in the alkyl group, alkoxyalkyl acrylates and methacrylates having 1 to 12 carbon atoms in the alkyl groups, styrene, acrylonitrile, vinyl acetate, and vinyl ethyl ether; and which copolymer has a Tg in the range 0° to 30° C.; and wherein the dry weight ratio of the at least one copolymer A: the at least one copolymer B is from 95:5 to 10:90, and wherein said composition provides contactable layers after drying.
Claim 3
Dependent Claim
29 words
An aqueous latex according to claim 1 characterised in that at least one of said at least one copolymer A in said composition comprises polymerised units of vinyl chloride.
Claim 4
Dependent Claim
34 words
An aqueous latex composition according to either claim 1 or claim 2 characterised in that at least one of said at least one copolymer B in said composition comprises polymerised units of vinyl chloride.
Claim 5
Dependent Claim
39 words
An aqueous latex composition according to any one of the preceding claims characterised in that at least one of said at least one copolymer A in said composition comprises polymerised units of at least one copolymerisable ethylenically unsaturated acid.
Claim 6
Dependent Claim
39 words
An aqueous latex composition according to any one of the preceding claims characterised in that at least one of said at least one copolymer B in said composition comprises polymerised units of at least one copolymerisable ethylenically unsaturated acid.
Claim 7
Dependent Claim
37 words
An aqueous latex composition according to any one of the preceding claims characterised in that the dry weight ratio of the at least one copolymer A: the at least one copolymer B is from 10:90 to 90:10.
Claim 8
Dependent Claim
33 words
An aqueous latex composition according to any one of the preceding claims characterised in that the Tg of the at least one copolymer A is in the range from -40° to -5° C.
Claim 9
Dependent Claim
77 words
An aqueous latex composition according to any one of the preceding claims characterised in that said at least one copolymer A comprises 10 to 70 weight % of polymerised units of vinylidene chloride, 30 to 90 weight % of polymerised units of said at least one internally plasticising comonomer, 0 to 20 weight % of polymerised units of vinyl chloride and 0 to 10 weight % of polymerised units of at least one copolymerisable ethylenically unsaturated acid.
Claim 10
Dependent Claim
25 words
An aqueous latex composition according to claim 8 characterised in that the proportion of polymerised units of vinylidene chloride is 20 to 60 weight %.
Claim 11
Dependent Claim
37 words
An aqueous latex composition according to either claim 8 or claim 9 characterised in that the proportion of polymerised units of said at least one internally plasticising comonomer in copolymer A is 40 to 80 weight %.
Claim 12
Dependent Claim
33 words
An aqueous latex composition according to any one of claims 8 to 10 characterised in that the proportion of polymerised units of vinyl chloride in copolymer A is 0 to 15 weight %.
Claim 13
Dependent Claim
35 words
An aqueous latex composition according to any one of claims 8 to 11 characterised in that the proportion of polymerised units of said at least one ethylenically unsaturated acid is 0.1 to 8 weight %.
Claim 14
Dependent Claim
25 words
An aqueous latex composition according to any one of the preceding claims characterised in that the at least one internally plasticising comonomer is n-butyl acrylate.
Claim 15
Dependent Claim
28 words
An aqueous latex composition according to any one of the preceding claims characterised in that copolymer A has been prepared in the presence of a chain transfer agent.
Claim 16
Dependent Claim
33 words
An aqueous latex composition according to any one of the preceding claims characterised in that the Tg of said at least one copolymer B is in the range from 2° to 30° C.
Claim 17
Dependent Claim
34 words
An aqueous latex composition according to any one of claims 1 to 14 characterised in that the Tg of said at least one copolymer B is in the range from 0° to 20° C.
Claim 18
Dependent Claim
108 words
An aqueous latex composition according to any one of the preceding claims characterised in that said at least one copolymer B comprises 10 to 70 weight % of polymerised units of vinylidene chloride, 2 to 90 weight % of polymerised units of at least one comonomer selected from alkyl acrylates and methacrylates having 1 to 12 carbon atoms in the alkyl group, alkoxyalkyl acrylates and methacrylates having 1 to 12 carbon atoms in the alkyl groups, acrylonitrile, vinyl acetate, and vinyl ethyl ether; 0 to 50 weight % of polymerised units of vinyl chloride; and 0 to 10 weight % of at least one copolymerisable ethylenically unsaturated acid.
Claim 19
Dependent Claim
25 words
An aqueous latex composition according to claim 17 characterised in that the proportion of polymerised units of vinylidene chloride is 35 to 70 weight %.
Claim 20
Dependent Claim
70 words
An aqueous latex composition according to either claim 17 or claim 18 characterised in that the proportion of polymerised units of the at least one monomer selected from alkyl acrylates and methacrylates having 1 to 12 carbon atoms in the alkyl groups, alkoxyalkyl acrylates and methacrylates having 1 to 12 carbon atoms in the alkyl groups, styrene, acrylonitrile, vinyl acetate, and vinyl ethyl ether, is 5 to 90 weight %.
Claim 21
Dependent Claim
28 words
An aqueous latex composition according to any one of claims 17 to 19 characterised the proportion of polymerised units of vinyl chloride is 0 to 30 weight %.
Claim 22
Dependent Claim
35 words
An aqueous latex composition according to any one of claims 17 to 20 characterised in that the proportion of Polymerised units of said at least one ethylenically unsaturated acid is 0.1 to 8 weight %.
Claim 23
Dependent Claim
30 words
An aqueous latex composition according to any one of the preceding claims characterised in that said at least one copolymer B includes units of at least one internally plasticising comonomer.
Claim 24
Dependent Claim
69 words
An aqueous latex composition according to any one of the preceding claims characterised in that said at least one copolymer B includes units of at least one comonomer within the scope of alkyl acrylates and methacrylates having 1 to 12 carbon atoms in the alkyl group and alkoxyalkyl acrylates and methacrylates having 1 to 12 carbon atoms in the alkyl group which comonomer is not an internally plasticising comonomer.
Claim 25
Dependent Claim
82 words
An aqueous latex composition according to any one of the preceding claims characterised in that the at least one comonomer providing polymerised units in copolymer B selected from alkyl acrylates and methacrylates having 1 to 12 carbon atoms in the alkyl group, alkoxyalkyl acrylates and methacrylates having 1 to 12 carbon atoms in the alkyl groups, styrene, acrylonitrile, vinyl acetate, and vinyl ethyl ether, is at least one alkyl acrylate or methacrylate having 1 to 12 carbon atoms in the alkyl group.
Claim 26
Dependent Claim
54 words
An aqueous latex composition according to any one of the preceding claims characterised in that said at least one comonomer providing polymerised units in copolymer if selected from alkyl acrylates and methacrylates having 1 to 12 carbon atoms in the alkyl group is at least one of methyl methacrylate, n-butyl acrylate and 2-ethylhexyl acrylate.
Claim 27
Dependent Claim
23 words
An aqueous latex composition according to claim 25 characterised in that said at least one comonomer is methyl methacrylate together with n-butyl acrylate.
Claim 28
Dependent Claim
44 words
An aqueous latex composition according to any one of claims 4 to 26 characterised in that the at least one copolymerisable ethylenically unsaturated acid if present as polymerised units in copolymer A and/or copolymer B is an ethylenically unsaturated carboxylic acid or sulphonic acid.
Claim 29
Dependent Claim
20 words
An aqueous latex composition according to claim 27 characterised in that the acid is an aliphatic alpha, beta-unsaturated carboxylic acid.
Claim 30
Dependent Claim
36 words
An aqueous latex composition according to any one of the preceding claims characterised in that the copolymer A and/or copolymer B comprise polymerised units of at least one type of comonomer to provide a cross-linking functionality.
Claim 31
Dependent Claim
28 words
An aqueous latex composition according to claim 29 characterised in that said polymerised units provide a cross-linking functionality which effects cross-linking during the polymerisation to form the copolymer.
Claim 32
Dependent Claim
24 words
An aqueous latex composition according to claim 29 characterised in that said polymerised units to provide a cross-linking functionality provide a latent cross-linking functionality.
Claim 33
Dependent Claim
29 words
An aqueous latex composition according to claim 31 characterised in that the latent cross-linking provided by said polymerised units requires the inclusion of a cross-linking agent in the composition.
Claim 34
Dependent Claim
32 words
An aqueous latex composition according to claim 1 characterised in that said latex composition includes at least one tackifying resin, which tackifying resin has been added in the form of a dispersion.
Claim 35
Dependent Claim
20 words
The use of an aqueous latex composition according to any one of the preceding claims as a contact adhesive-forming composition.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-09-23 | 1989-03-25 | 1989-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-23 | 1993-03-25 | 1993-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-23 | 1997-03-25 | 1997-09-24 | $7700.00 | Window Closed / Lapsed |