US4812541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High performance pressure-sensitive adhesive polymers
Assignee: Avery Dennison Corp
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Filing: 1987-12-23
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Granted: 1989-03-14
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Expires: 2007-12-23
Abstract
Abstract Pressure-sensitive copolymers based on acrylic monomers are provided with high adhesive performance characteristics by the inclusion of a synergistic amount of an N-vinyl lactam monomer and a glycidyl monomer with the bulk of the monomers being an alkyl acrylate and/or methacrylate esters.
Inventors
- 👤 Prakash Mallya
- 👤 Colin Smith
- 👤 Sebastian S. Plamthottam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:03
CPC Classifications
C; C09; C09J; C09J133/00; C09J133/04; C09J133/06; C09J133/062; C09J133/068; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/12; C08F220/16; C08F220/18; C08F220/1808; C09J7/00; C09J7/30; C09J7/38; C09J7/381; C09J7/385; C09J2301/00; C09J2301/30; C09J2301/302
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
133 words
A pressure-sensitive adhesive comprising a copolymer comprising on a copolymerized basis from about 55 to about 85% by weight of a monomer selected from the group consisting of alkyl acrylate esters and alkyl methacrylate esters containing from 4 to about 12 carbon atoms in the alkyl group and mixtures thereof, from 0 to about 35% by weight of an alkyl acrylate or methacrylate ester containing less than 4 carbon atoms in the alkyl group, from 0.01 to about 2% by weight of a glycidyl monomer, from about 1 to about 10% by weight of an N-vinyl lactam, and from 0 to about 15% by weight of an unsaturated carboxylic acid, said copolymer having a weight average molecular weight of at least about 200,000 and a glass transition temperature less than about -15° C.
Claim 2
Dependent Claim
133 words
A pressure-sensitive adhesive comprising a copolymer comprising on a copolymerized basis from about 55 to about 85% by weight of a monomer selected from the group consisting of alkyl acrylate esters and alkyl methacrylate esters containing from 4 to about 12 carbon atoms in the alkyl group and mixtures thereof, from 0 to about 35% by weight of an alkyl acrylate or methacrylate ester containing less than 4 carbon atoms in the alkyl group, from 0.01 to about 2% by weight of a glycidyl monomer, from about 1 to about 10% by weight of an N-vinyl lactam, and from 0 to about 15% by weight of an unsaturated carboxylic acid, said copolymer having a weight average molecular weight of at least about 200,000 and a glass transition temperature less than about -15° C.
Claim 3
Dependent Claim
56 words
A pressure-sensitive adhesive as claimed in claim 1 which contains, based on the total weight of monomers, up to about 35% by weight, of a monomer selected from the group consisting of polystyryl ethyl methacrylate, aceto-acetoxy ethyl methacrylate, styrene, alpha olefins, vinyl esters of alkanoic acids containing more than about three carbon atoms and mixtures thereof.
Claim 4
Dependent Claim
20 words
A pressure-sensitive adhesive as claimed in claim 1 in which the alkyl acrylate is 2-ethyl hexyl acrylate or isooctyl acrylate.
Claim 5
Dependent Claim
20 words
A pressure-sensitive adhesive as claimed in claim 2 in which the alkyl acrylate is 2-ethyl hexyl acrylate or isooctyl acrylate.
Claim 6
Dependent Claim
30 words
A pressure-sensitive adhesive as claimed in claim 1 in which the glycidyl monomer is selected from the group consisting of glycidyl acrylate, glycidyl methacrylate, allyl glycidyl ether and mixtures thereof.
Claim 7
Dependent Claim
30 words
A pressure-sensitive adhesive as claimed in claim 2 in which the glycidyl monomer is selected from the group consisting of glycidyl acrylate, glycidyl methacrylate, allyl glycidyl ether and mixtures thereof.
Claim 8
Dependent Claim
30 words
A pressure-sensitive adhesive as claimed in claim 3 in which the glycidyl monomer is selected from the group consisting of glycidyl acrylate, glycidyl methacrylate, allyl glycidyl ether and mixtures thereof.
Claim 9
Dependent Claim
30 words
A pressure-sensitive adhesive as claimed in claim 4 in which the glycidyl monomer is selected from the group consisting of glycidyl acrylate, glycidyl methacrylate, allyl glycidyl ether and mixtures thereof.
Claim 10
Dependent Claim
27 words
A pressure-sensitive adhesive as claimed in claim 1 in which the N-vinyl lactam is selected from the group consisting of N-vinyl pyrrolidone, N-vinyl caprolactam and mixtures thereof.
Claim 11
Dependent Claim
27 words
A pressure-sensitive adhesive as claimed in claim 2 in which the N-vinyl lactam is selected from the group consisting of N-vinyl pyrrolidone, N-vinyl caprolactam and mixtures thereof.
Claim 12
Dependent Claim
27 words
A pressure-sensitive adhesive as claimed in claim 3 in which the N-vinyl lactam is selected from the group consisting of N-vinyl pyrrolidone, N-vinyl caprolactam and mixtures thereof.
Claim 13
Dependent Claim
27 words
A pressure-sensitive adhesive as claimed in claim 4 in which the N-vinyl lactam is selected from the group consisting of N-vinyl pyrrolidone, N-vinyl caprolactam and mixtures thereof.
Claim 14
Dependent Claim
27 words
A pressure-sensitive adhesive as claimed in claim 5 in which the N-vinyl lactam is selected from the group consisting of N-vinyl pyrrolidone, N-vinyl caprolactam and mixtures thereof.
Claim 15
Dependent Claim
27 words
A pressure-sensitive adhesive as claimed in claim 6 in which the N-vinyl lactam is selected from the group consisting of N-vinyl pyrrolidone, N-vinyl caprolactam and mixtures thereof.
Claim 16
Dependent Claim
27 words
A pressure-sensitive adhesive as claimed in claim 7 in which the N-vinyl lactam is selected from the group consisting of N-vinyl pyrrolidone, N-vinyl caprolactam and mixtures thereof.
Claim 17
Dependent Claim
27 words
A pressure-sensitive adhesive as claimed in claim 8 in which the N-vinyl lactam is selected from the group consisting of N-vinyl pyrrolidone, N-vinyl caprolactam and mixtures thereof.
Claim 18
Dependent Claim
27 words
A pressure-sensitive adhesive as claimed in claim 1 in which the formed copolymer is cross-linked by exposure to heat, ionic additive, actinic radiation or electron beam radiation.
Claim 19
Dependent Claim
103 words
A pressure-sensitive adhesive comprising a copolymer comprising frm about 55 to about 85% of an alkyl acrylate ester selected from the group consisting of isooctyl acrylate and 2-ethyl hexyl acrylate, from about 0.01 to about 2% by weight glycidyl methacrylate, from about 1 to about 10% of a N-vinyl lactam selected from the group consisting of N-vinyl pyrrolidone and N-vinyl caprolactam, from about 5 to 13% by weight unsaturated carboxylic acid, and up to about 35% by weight methyl acrylate, said polymer having weight average molecular weight from about 200,000 to about 500,000 and a glass transition temperature less than about -15° C.
Claim 20
Dependent Claim
103 words
A pressure-sensitive adhesive comprising a copolymer comprising frm about 55 to about 85% of an alkyl acrylate ester selected from the group consisting of isooctyl acrylate and 2-ethyl hexyl acrylate, from about 0.01 to about 2% by weight glycidyl methacrylate, from about 1 to about 10% of a N-vinyl lactam selected from the group consisting of N-vinyl pyrrolidone and N-vinyl caprolactam, from about 5 to 13% by weight unsaturated carboxylic acid, and up to about 35% by weight methyl acrylate, said polymer having weight average molecular weight from about 200,000 to about 500,000 and a glass transition temperature less than about -15° C.
Claim 21
Dependent Claim
27 words
A pressure-sensitive adhesive as claimed in claim 18 in which the formed copolymer is cross-linked by exposure to heat, ionic additive, actinic radiation or electron beam radiation.
References Cited (Backward Citations)
US3787380A
Cited
US4510197A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-03-13 | 1992-09-12 | 1993-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-13 | 1996-09-12 | 1997-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-13 | 2000-09-12 | 2001-03-14 | $7700.00 | Window Closed / Lapsed |