US5079047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation-curable pressure-sensitive adhesive having improved adhesion to plasticized vinyl substrates
Assignee: 3M Co
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Filing: 1989-05-12
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Granted: 1992-01-07
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Expires: 2009-05-12
Abstract
Abstract The current invention provides a photopolymerized pressure-sensitive adhesive which adheres well to all common surfaces and has an outstanding ability to bond to plasticized vinyl substrates and to remain firmly bonded thereto even after the in contact therewith for extended periods of time comprising the photopolymerization reaction product of a mixture containing about: 60-95 parts of alkyl acrylate; 5-40 parts monoethylenically unsaturated polar copolymerizable monomer; 10-30 parts ethylene vinylacetate copolymer containing about 40% to 70% vinylacetate; and 0.1-1 part photoinitiator.
Inventors
- 👤 Yvan A. Bogaert
- 👤 Martine H. A. Deketele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:38
CPC Classifications
C; C09; C09J; C09J133/00; C09J133/04; C09J7/00; C09J7/30; C09J7/38; C09J7/381; C09J7/385; C08; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/08; C08L2666/00; C08L2666/02; C08L2666/04; C09J2301/00; C09J2301/30; C09J2301/302; Y; Y10; Y10S; Y10S526/00; Y10S526/931; Y10T; Y10T428/00; Y10T428/14; Y10T428/1452; Y10T428/28; Y10T428/2809; Y10T428/2839; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/3192; Y10T428/31928
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
134 words
A pressure-sensitive adhesive which remains firmly bonded to plasticized vinyl substrates after remaining in contact therewith over an extended period of time, said pressure-sensitive adhesive being the photopolymerization reaction product of a mixture consisting essentially of: (a) about 60 to 95 parts of an acrylic acid ester of a nontertiary alcohol, the alkyl groups of which contain from about 4-14 carbon atoms; (b) about 5 to 40 parts of a monoethylenically unsaturated polar copolymerizable monomer; (c) about 10-30 parts of an ethylene vinylacetate copolymer containing from about 40 to about 70% vinylacetate, based upon the total weight of said acrylic acid ester and said monoethylenically unsaturated polar copolymerizable monomer; and (d) about 0.1 to about 1 part photoinitiator based on the weight of said acrylic acid ester and said monoethylenically unsaturated polar copolymerizable monomer.
Claim 2
Dependent Claim
134 words
A pressure-sensitive adhesive which remains firmly bonded to plasticized vinyl substrates after remaining in contact therewith over an extended period of time, said pressure-sensitive adhesive being the photopolymerization reaction product of a mixture consisting essentially of: (a) about 60 to 95 parts of an acrylic acid ester of a nontertiary alcohol, the alkyl groups of which contain from about 4-14 carbon atoms; (b) about 5 to 40 parts of a monoethylenically unsaturated polar copolymerizable monomer; (c) about 10-30 parts of an ethylene vinylacetate copolymer containing from about 40 to about 70% vinylacetate, based upon the total weight of said acrylic acid ester and said monoethylenically unsaturated polar copolymerizable monomer; and (d) about 0.1 to about 1 part photoinitiator based on the weight of said acrylic acid ester and said monoethylenically unsaturated polar copolymerizable monomer.
Claim 3
Dependent Claim
18 words
A pressure-sensitive adhesive according to claim 1 containing about 15 to 25 parts of said ethylene vinylacetate copolymer.
Claim 4
Dependent Claim
15 words
A pressure-sensitive adhesive according to claim 1 wherein said acrylic acid ester is isooctyl acrylate.
Claim 5
Dependent Claim
36 words
A pressure-sensitive adhesive according to claim 3 wherein said isooctyl acrylate comprises from about 60 to 75 parts of the total parts by weight of said acrylic acid ester and said monoethylenically unsaturated polar copolymerizable monomer.
Claim 6
Dependent Claim
14 words
A pressure-sensitive adhesive according to claim 4 wherein said polar monomer is N-vinyl pyrrolidone.
Claim 7
Dependent Claim
18 words
A pressure-sensitive adhesive tape comprising a layer of the adhesive of claim 5 carried by a sheet backing.
Claim 8
Dependent Claim
17 words
A pressure-sensitive adhesive according to claim 1 wherein said polar copolymerizable monomer is a strongly polar monomer.
Claim 9
Dependent Claim
15 words
A pressure-sensitive adhesive according to claim 7 wherein said strongly polar monomer is acrylic acid.
Claim 10
Dependent Claim
12 words
A pressure-sensitive adhesive according to claim 1 further containing a polyfunctional acrylate.
Claim 11
Dependent Claim
14 words
A pressure-sensitive adhesive according to claim 9 wherein said polyfunctional acrylate is 1,6-hexanediol diacrylate.
Claim 12
Dependent Claim
18 words
A pressure-sensitive adhesive tape comprising a layer of the adhesive of claim 1 carried on a sheet backing.
Claim 13
Dependent Claim
22 words
A pressure-sensitive tape according to claim 11 wherein the surface of said backing adjacent the adhesive is provided with a release coating.
Claim 14
Dependent Claim
17 words
A plasticized vinyl substrate having firmly adhered thereto a layer of the pressure-sensitive adhesive of claim 1.
References Cited (Backward Citations)
GB1051125A
Cited
US4212912A
Cited
US4045600A
Cited
US4272573A
Cited
US4284681A
Cited
US4303485A
Cited
US4379201A
Cited
US4605592A
Cited
EP0150978A2
Cited
GB2162191A
Cited
US4710536A
Cited
US4749590A
Cited
US4818610A
Cited
US4753846A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-01-06 | 1995-07-08 | 1996-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-06 | 1999-07-08 | 2000-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-06 | 2003-07-08 | 2004-01-07 | $7700.00 | Window Closed / Lapsed |