US4306039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic elastomeric compositions
Assignee: Kendall Co
•
Filing: 1980-04-23
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Granted: 1981-12-15
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Expires: 2000-04-23
Abstract
Abstract A non-tacky thermoplastic elastomeric composition which is an optically clear blend of (A) a copolymer of ethyl or butyl acrylate or mixtures thereof with from 2 to 10% by weight of a copolymerizable ethylenic monomer containing an acid group and (B) from 2 to 15%, by weight of the blend, of a water-soluble homopolymer of a vinyl lactam having the structure ##STR1## in which X represents an alkylene bridge having three to five carbon atoms, or from 2 to 30%, by weight of the blend, of a copolymer of said lactam with from 1 to 80 mole percent of a copolymerizable monomer containing a polymerizable ethylenic unsaturation, the vinyl lactam polymer or copolymer having a glass transistion temperature from 20° to 250° C.
Inventors
- 👤 Kishore R. Shah
- 👤 Samuel C. Temin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:53
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3284; C; C08; C08L; C08L33/00; C08L33/04; C08L33/06; C08L33/062; C08L33/064; C09; C09J; C09J133/00; C09J133/04; C09J133/06; C09J133/08; C09K; C09K3/00; C09K3/10; C08L2666/00; C08L2666/02; C08L2666/04; C08L39/00; C09K2200/00; C09K2200/06; C09K2200/0615; C09K2200/0622; C09K2200/0625
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
162 words
A non-tacky thermoplastic elastomeric composition comprising an optically clear blend of (A) a high molecular weight copolymer of ethyl or butyl acrylate or mixtures thereof with from 2 to 10% by weight, based on the weight of the copolymer, of a copolymerizable ethylenic monomer containing an acid group, said copolymer having a molecular weight of at least 600,000 and a glass transition temperature from -10° C. to -50° C., and (B) from 2 to 15%, by weight of the blend, of a water-soluble homopolymer of a vinyl lactam having the structure ##STR3## in which X represents an alkylene bridge having three to five carbon atoms, or from 2 to 30%, by weight of the blend, of a copolymer of said vinyl lactam with from 1 to 80 mole percent of a copolymerizable monomer containing a polymerizable ethylenic unsaturation, said vinyl lactam polymer and copolymer having a molecular weight of at least 10,000 and a glass transition temperature from 20° to 250° C.
Claim 2
Dependent Claim
162 words
A non-tacky thermoplastic elastomeric composition comprising an optically clear blend of (A) a high molecular weight copolymer of ethyl or butyl acrylate or mixtures thereof with from 2 to 10% by weight, based on the weight of the copolymer, of a copolymerizable ethylenic monomer containing an acid group, said copolymer having a molecular weight of at least 600,000 and a glass transition temperature from -10° C. to -50° C., and (B) from 2 to 15%, by weight of the blend, of a water-soluble homopolymer of a vinyl lactam having the structure ##STR3## in which X represents an alkylene bridge having three to five carbon atoms, or from 2 to 30%, by weight of the blend, of a copolymer of said vinyl lactam with from 1 to 80 mole percent of a copolymerizable monomer containing a polymerizable ethylenic unsaturation, said vinyl lactam polymer and copolymer having a molecular weight of at least 10,000 and a glass transition temperature from 20° to 250° C.
Claim 3
Dependent Claim
25 words
A composition as claimed in claim 1 in which X represents --CH 2 --CH 2 --CH 2 and said vinyl lactam polymer is a homopolymer.
Claim 4
Dependent Claim
27 words
A composition as claimed in claim 2 in which said first copolymer is a copolymer of ethyl acrylate with a copolymerizable ethylenic monomer containing a carboxylic group.
Claim 5
Dependent Claim
15 words
A composition as claimed in claim 3 in which the ethylenic monomer is acrylic acid.
Claim 6
Dependent Claim
27 words
A composition as claimed in claim 2 in which said first copolymer is a copolymer of butyl acrylate with a copolymerizable ethylenic monomer containing a carboxylic group.
Claim 7
Dependent Claim
15 words
A composition as claimed in claim 5 in which the ethylenic monomer is acrylic acid.
Claim 8
Dependent Claim
39 words
A composition as claimed in claim 2 in which said first copolymer has a molecular weight of at least 750,000 and the amount of said polymer in the blend is from 5 to 15% by weight of the blend.
Claim 9
Dependent Claim
25 words
A composition as claimed in claim 1 in which X represents --CH 2 --CH 2 --CH 2 and said vinyl lactam polymer is a copolymer.
Claim 10
Dependent Claim
64 words
A composition as claimed in claim 8 in which said first copolymer is a copolymer of ethyl acrylate with a copolymerizable ethylenic monomer containing a carboxylic group and said vinyl lactam copolymer is a copolymer of 1-vinyl-2-pyrrolidone with a member of the group consisting of vinyl acetate and alkyl acrylates and methacrylates in which the alkyl group has from 1 to 14 carbon atoms.
Claim 11
Dependent Claim
19 words
A composition as claimed in claim 9 in which said ethylenic monomer containing a carboxylic group is acrylic acid.
Claim 12
Dependent Claim
64 words
A composition as claimed in claim 8 in which said first copolymer is a copolymer of butyl acrylate with a copolymerizable ethylenic monomer containing a carboxylic group and said vinyl lactam copolymer is a copolymer of 1-vinyl-2-pyrrolidone with a member of the group consisting of vinyl acetate and alkyl acrylates and methacrylates in which the alkyl group has from 1 to 14 carbon atoms.
Claim 13
Dependent Claim
19 words
A composition as claimed in claim 11 in which said ethylenic monomer containing a carboxylic group is acrylic acid.
References Cited (Backward Citations)
US3027347A
Cited
US3928262A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-12-14 | 1985-06-15 | 1985-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-14 | 1989-06-15 | 1989-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-14 | 1993-06-15 | 1993-12-15 | $7700.00 | Window Closed / Lapsed |