US4442258A
Expired / Lapsed
US
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Water-soluble pressure-sensitive adhesive composition
Assignee: Nitto Denko Corp
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Filing: 1980-07-03
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Granted: 1984-04-10
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Expires: 2000-07-03
Abstract
Abstract A water-soluble pressure-sensitive adhesive composition is described containing a polymerization product obtained by the solution polymerization of a water-soluble ethylenically unsaturated monomer in the presence of an alcoholic plasticizer having a molecular weight of less than about 3,000 and which is a liquid at room temperature, selected from the group consisting of polyether polyols and polyhydric alcohols, wherein the polymerization product contains as a polymer component at least an addition copolymer of the water-soluble ethylenically unsaturated monomer and the alcoholic plasticizer.
Inventors
- 👤 Makoto Sunakawa
- 👤 Yutaka Moroishi
- 👤 Isao Mune
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:03
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/04; C08F2/10; C09; C09J; C09J4/00; C09J4/06
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
107 words
A water-soluble pressure-sensitive adhesive composition comprising a composition obtained by the solution polymerization of a water-soluble ethylenically unsaturated monomer in the presence of a solvent and an alcoholic plasticizer selected from the group consisting of polyether polyols and polyhydric alcohols, said alcoholic plasticizers having an average molecular weight of less than about 3,000 and which is liquid at room temperature, wherein said composition contains as a polymer component at least an addition copolymer of the unsaturated monomer and the alcoholic plasticizer, wherein the alcoholic plasticizer is present in an amount of from 20 to 400 parts by weight per 100 parts by weight of the unsaturated monomer.
Claim 2
Dependent Claim
107 words
A water-soluble pressure-sensitive adhesive composition comprising a composition obtained by the solution polymerization of a water-soluble ethylenically unsaturated monomer in the presence of a solvent and an alcoholic plasticizer selected from the group consisting of polyether polyols and polyhydric alcohols, said alcoholic plasticizers having an average molecular weight of less than about 3,000 and which is liquid at room temperature, wherein said composition contains as a polymer component at least an addition copolymer of the unsaturated monomer and the alcoholic plasticizer, wherein the alcoholic plasticizer is present in an amount of from 20 to 400 parts by weight per 100 parts by weight of the unsaturated monomer.
Claim 3
Dependent Claim
29 words
A water-soluble pressure-sensitive adhesive composition of claim 1 including, in addition to the water-soluble ethylenically unsaturated monomer, a water-insoluble ethylenically unsaturated monomer copolymerizable with said water-soluble ethylenically unsaturated monomer.
Claim 4
Dependent Claim
32 words
A water-soluble pressure-sensitive adhesive composition of claim 1 or 2, wherein the solvent is selected from the group consisting of water and an aqueous solvent of water and a water-soluble organic solvent.
Claim 5
Dependent Claim
33 words
A water-soluble pressure-sensitive adhesive composition of claim 3, wherein a polymerization initiator for use in the solution polymerization is selected from the group consisting of a persulfate, hydrogen peroxide and a redox catalyst.
Claim 6
Dependent Claim
35 words
A water-soluble pressure-sensitive adhesive composition of claim 1 or 2, wherein the amount of the solvent used is from about 5 to 1,000 parts by weight per 100 parts by weight of the unsaturated monomer.
Claim 7
Dependent Claim
36 words
A water-soluble pressure-sensitive adhesive composition of claim 3, wherein the solvent is water and the amount used thereof is from about 50 to 1,000 parts by weight per 100 parts by weight of the unsaturated monomer.
Claim 8
Dependent Claim
55 words
A water-soluble pressure-sensitive adhesive composition of claim 3 or 6, wherein the solvent is selected from the group consisting of the organic solvent alone and an aqueous solvent containing the organic solvent, and the amount used thereof is from about 5 to 500 parts by weight per 100 parts by weight of the unsaturated monomer.
Claim 9
Dependent Claim
28 words
A water-soluble pressure-sensitive adhesive composition of claim 2, wherein the water-insoluble ethylenically unsaturated monomer comprises not more than 85% by weight or less of the total unsaturated monomer.
Claim 10
Dependent Claim
26 words
A water-soluble pressure-sensitive adhesive composition of claim 6, wherein the water-insoluble ethylenically unsaturated monomer comprises not more than 25% by weight of the total unsaturated monomer.
Claim 11
Dependent Claim
26 words
A water-soluble pressure-sensitive adhesive composition of claim 7, wherein the water-insoluble ethylenically unsaturated monomer comprises not more than 75% by weight of the total unsaturated monomer.
Claim 12
Dependent Claim
39 words
A water-soluble pressure-sensitive adhesive composition of claim 2, wherein the water-insoluble ethylenically unsaturated monomer is selected from the group consisting of alkylacrylate or alkylmethacrylate containing up to 14 carbon atoms, vinyl acetate and dialkyl esters of dibasic unsaturated acids.
Claim 13
Dependent Claim
12 words
A water-soluble pressure-sensitive adhesive composition of claim 1 including a water-soluble plasticizer.
Claim 14
Dependent Claim
33 words
A water-soluble pressure-sensitive adhesive composition of claim 12, wherein the water-soluble plasticizer is compounded in an amount of 700 parts by weight or less per 100 parts by weight of the unsaturated monomer.
Claim 15
Dependent Claim
20 words
A water-soluble pressure-sensitive adhesive composition of claim 12, wherein the water-soluble plasticizer is a polyether polyol or a polyhydric alcohol.
Claim 16
Dependent Claim
26 words
A water-soluble pressure-sensitive adhesive composition of claim 3, wherein the aqueous solvent is selected from the group consisting of methanol, ethanol, isoproponyl, acetone, and methylethyl ketone.
Claim 17
Dependent Claim
27 words
A water-soluble pressure-sensitive adhesive composition of claim 1 or 2, wherein the alcoholic plasticizer is present in an amount of from 50 to 300 parts by weight.
Claim 18
Dependent Claim
45 words
A water-soluble pressure-sensitive adhesive composition of claim 2, wherein the water-insoluble ethylenically unsaturated monomer is selected from the group consisting of alkylacrylate or alkylmethacrylate containing 14 or less carbon atoms, vinyl acetate, and dialkyl esters of dibasic unsaturated acids containing 8 or less carbon atoms.
Claim 19
Dependent Claim
23 words
A water-soluble pressure-sensitive adhesive composition of claim 1 or 2, wherein said alcoholic plasticizer has a molecular weight of less than about 2,000.
Claim 20
Dependent Claim
20 words
A water-soluble pressure-sensitive adhesive composition of claim 18, wherein said alcoholic plasticizer has a molecular weight of less than 1,000.
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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) | 1987-04-10 | 1987-10-10 | 1988-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-10 | 1991-10-10 | 1992-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-10 | 1995-10-10 | 1996-04-10 | $7700.00 | Window Closed / Lapsed |