US4012560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Articles coated with pressure-sensitive interpolymers containing 2-acrylamido-2-methylpropanesulfonic acid
Assignee: Monsanto Co
•
Filing: 1975-11-03
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Granted: 1977-03-15
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Expires: 1995-11-03
Abstract
Abstract Acrylic pressure-sensitive resins comprising at least one ester of acrylic acid or methacrylic acid containing from 6 to 20 carbon atoms and between 0.1 and 1.5 weight percent of 2-acrylamido-2-methylpropanesulfonic acid. The resins are prepared in aqueous emulsion and when coated on substrates and dried provide pressure-sensitive films with superior peel strength retention.
Inventors
- 👤 James C. Baatz
- 👤 Albert E. Corey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:46
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/12; C08F220/16; C09; C09J; C09J7/00; C09J7/30; C09J7/38; C09J7/381; C09J7/385; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2839; Y10T428/31504; Y10T428/31725; Y10T428/31736; Y10T428/31739; Y10T428/31743; Y10T428/31746; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906; Y10T428/31909; Y10T428/31913; Y10T428/3192
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
131 words
An article of manufacture comprising a substrate coated on at least one side with a pressure-sensitive interpolymer comprising: A. from 0.1 to 1.5 weight percent of 2-acrylamido-2-methylpropanesulfonic acid, and B. at least one monomer selected from the group consisting of esters of acrylic acid and methacrylic acid containing from 6 to 20 carbon atoms, alone, or with C. a monomer selected from the group consisting of alpha-olefins containing from 2 to 10 carbon atoms, vinyl esters of alkanoic acids containing from 3 to 10 carbon atoms, ethyl and methyl esters of acrylic and methacrylic acids, acrylonitrile, methacrylonitrile, styrene, vinyl toluene, and vinyl chloride, wherein the interpolymer has a weight average molecular weight in the range 10,000 to 1,000,000 and a glass transition temperature in the range of -15° to -75° C.
Claim 2
Dependent Claim
131 words
An article of manufacture comprising a substrate coated on at least one side with a pressure-sensitive interpolymer comprising: A. from 0.1 to 1.5 weight percent of 2-acrylamido-2-methylpropanesulfonic acid, and B. at least one monomer selected from the group consisting of esters of acrylic acid and methacrylic acid containing from 6 to 20 carbon atoms, alone, or with C. a monomer selected from the group consisting of alpha-olefins containing from 2 to 10 carbon atoms, vinyl esters of alkanoic acids containing from 3 to 10 carbon atoms, ethyl and methyl esters of acrylic and methacrylic acids, acrylonitrile, methacrylonitrile, styrene, vinyl toluene, and vinyl chloride, wherein the interpolymer has a weight average molecular weight in the range 10,000 to 1,000,000 and a glass transition temperature in the range of -15° to -75° C.
Claim 3
Dependent Claim
26 words
The article of manufacture of claim 1 wherein the Group B comonomer is selected from the group consisting of isobutyl acrylate, 2-ethylhexyl acrylate and 2-ethylhexyl methacrylate.
Claim 4
Dependent Claim
20 words
The article of manufacture of claim 1 wherein the Group C monomer is vinyl acetate, methyl acrylate, or ethyl acrylate.
Claim 5
Dependent Claim
20 words
The article of manufacture of claim 1 wherein the interpolymer contains from 0.25 to 1 weight percent of 2-acrylamido-2-methylpropanesulfonic acid.
Claim 6
Dependent Claim
18 words
The article of manufacture of claim 1 wherein the interpolymer has a molecular weight between 50,000 and 700,000.
Claim 7
Dependent Claim
13 words
The article of manufacture of claim 1 wherein the substrate is a tape.
Claim 8
Dependent Claim
13 words
The article of manufacture of claim 1 wherein the substrate is a sheet.
Claim 9
Dependent Claim
28 words
The article of manufacture of claim 1 wherein the substrate is selected from the group consisting of plasticized polyvinyl chloride, Mylar, cellulose acetate, nylon, polyethylene, polypropylene, and paper.
References Cited (Backward Citations)
US3269994A
Cited
US3725122A
Cited
US3890180A
Cited
US3892720A
Cited
US3927239A
Cited
US3936408A
Cited
US3931087A
Cited
US3931089A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-14 | 1980-09-13 | 1981-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-14 | 1984-09-13 | 1985-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-14 | 1988-09-13 | 1989-03-15 | $7700.00 | Window Closed / Lapsed |