Patent US4172177A successfully refreshed from Google Patents.
US4172177A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water insoluble hydrophilic polymer composition
Assignee: Kyowa Gas Chemical Industry Co Ltd
•
Filing: 1977-12-13
•
Granted: 1979-10-23
•
Expires: 1997-12-13
Abstract
Abstract A water-insoluble hydrophilic polymer composition capable of crosslinking at ambient temperature. The composition contains (A) a water-insoluble hydrophilic copolymer prepared by copolymerizing (a) at least one carboxyl group containing ethylenically unsaturated monomer selected from acrylic acid, methacrylic acid, maleic anhydride, fumaric acid, itaconic acid and citraconic acid, (b) at least one amino group containing ethylenically unsaturated monomer of the formula: ##STR1## where R 1 -R 4 are specifically defined, and (c) an ethylenically unsaturated monomer selected from (i) a monomer of the formula: ##STR2## (R 6 being alkyl), (II) A MONOMER OF THE FORMULA: ##STR3## and (iii) diacetone acrylamide, and (B) a polyepoxide crosslinking agent having at least two terminal epoxy groups. The water absorption rate of the polymer can be adjusted over a wide range and has sufficient coating strength and bonding strength to withstand long periods of immersion in water.
Inventors
- 👤 Bunya Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:17
CPC Classifications
C; C09; C09D; C09D135/00; C08; C08F; C08F220/00; C08F220/02; C08F220/04; C08F222/00; C08F222/02; C08F246/00; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/62; C08G18/6216; C08G18/6266; C08G18/6283; C09D133/00; C09D163/00; C09D5/00; C09D5/16; C09D5/1656; C09D5/1662; C09D5/1668; Y; Y10; Y10S; Y10S428/00; Y10S428/907; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31525; Y10T428/31529; Y10T428/31551; Y10T428/31645; Y10T428/31649
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
200 words
A water-insoluble hydrophilic polymer composition comprising (A) a water-insoluble hydrophilic copolymer of (a) 3 to 20% by weight of at least one carboxyl group-containing ethylenically unsaturated monomer selected from the group consist of acrylic acid, methacrylic acid, maleic anhydride, fumaric acid, itaconic acid and citraconic acid, (b) 10 to 60% by weight of at least one amino group-containing ethylenically unsaturated monomer having the general formula I: ##STR14## wherein R 1 is H or CH 3 , R 2 is alkylene having 1-4 carbon atoms, and R 3 and R 4 are alkyl having 1-4 carbon atoms and (c) 20 to 75% by weight of at least one ethylenically unsaturated monomer selected from the group consisting of (i) a monomer having the general formula II: ##STR15## wherein R 5 is H or CH 3 and R 6 is alkyl having 1-20 carbon atoms, (ii) a monomer having the general formula III: ##STR16## wherein R 7 is H or CH 3 and R 8 is alkylene having 2-3 carbon atoms, and (iii) diacetone acrylamide, and (B) 3 to 50% by weight, based on the weight of said copolymer, of a polyepoxide, as a crosslinking agent, having at least two terminal epoxy groups.
Claim 2
Dependent Claim
200 words
A water-insoluble hydrophilic polymer composition comprising (A) a water-insoluble hydrophilic copolymer of (a) 3 to 20% by weight of at least one carboxyl group-containing ethylenically unsaturated monomer selected from the group consist of acrylic acid, methacrylic acid, maleic anhydride, fumaric acid, itaconic acid and citraconic acid, (b) 10 to 60% by weight of at least one amino group-containing ethylenically unsaturated monomer having the general formula I: ##STR14## wherein R 1 is H or CH 3 , R 2 is alkylene having 1-4 carbon atoms, and R 3 and R 4 are alkyl having 1-4 carbon atoms and (c) 20 to 75% by weight of at least one ethylenically unsaturated monomer selected from the group consisting of (i) a monomer having the general formula II: ##STR15## wherein R 5 is H or CH 3 and R 6 is alkyl having 1-20 carbon atoms, (ii) a monomer having the general formula III: ##STR16## wherein R 7 is H or CH 3 and R 8 is alkylene having 2-3 carbon atoms, and (iii) diacetone acrylamide, and (B) 3 to 50% by weight, based on the weight of said copolymer, of a polyepoxide, as a crosslinking agent, having at least two terminal epoxy groups.
Claim 3
Dependent Claim
46 words
A water-insoluble hydrophilic composition according to claim 1, wherein the monomer (b) has the general formula: ##STR17## wherein R 1 is H or CH 3 , R 2 is alkylene having 1-2 carbon atoms and, R 3 and R 4 are alkyl having 1-2 carbon atoms.
Claim 4
Dependent Claim
93 words
A water-insoluble hydrophilic composition according to claim 2, wherein the monomer (a) is acrylic or methacrylic acid, the monomer (b) has the general formula: ##STR18## wherein R 1 is H or CH 3 and R 3 and R 4 are alkyl having 1-2 carbon atoms, and monomer (c) is at least one member selected from the group consisting of (i) a monomer having the general formula: ##STR19## wherein R 5 is H or CH 3 and R 6 is alkyl having 1-12 carbon atoms, (ii) hydroxyethyl acrylate or methacrylate and (iii) diacetone acrylamide.
Claim 5
Dependent Claim
54 words
A water-insoluble hydrophilic composition according to claim 1, comprising a hydrophilic copolymer of 3 to 20% by weight of monomer (a), 10 to 60% by weight of monomer (b) and 20 to 75% by weight of monomer (c), and 3 to 30% by weight of the polyepoxide based on the weight of said copolymer.
Claim 6
Dependent Claim
54 words
A water-insoluble hydrophilic composition according to claim 4, comprising a hydrophilic copolymer of 8 to 15% by weight of monomer (a), 10 to 60% by weight of monomer (b) and 45 to 72% by weight of monomer (c), and 5 to 20% by weight of the polyepoxide based on the weight of said copolymer.
Claim 7
Dependent Claim
51 words
A water-insoluble hydrophilic composition according to claim 2, wherein the polyepoxide is selected from the group consisting of: ##STR20## wherein n is zero or a positive integer, ##STR21## wherein R is H or CH 3 and n is a positive integer, ##STR22## wherein x, y, z and n are positive integers.
Claim 8
Dependent Claim
23 words
A water-insoluble hydrophilic composition according to claim 1, further comprising 2 to 200% by weight of an anti-fouling agent based on the copolymer.
Claim 9
Dependent Claim
20 words
A water-insoluble hydrophilic composition according to claim 7, wherein the anti-fouling agent is Cu 2 O or an organotin compound.
Claim 10
Dependent Claim
19 words
An underwater construction comprising a substrate and as a coating thereon, a water-insoluble hydrophilic composition according to claim 1.
Claim 11
Dependent Claim
25 words
An underwater construction according to claim 9, wherein the coating of the water-insoluble hydrophilic composition has 10 to 150% by weight of water absorbing capacity.
Claim 12
Dependent Claim
20 words
An underwater construction according to claim 10, wherein the coating has 40 to 100% by weight of water absorbing capacity.
Claim 13
Dependent Claim
19 words
An underwater construction comprising a substrate and as a coating thereon, a water-insoluble hydrophilic composition according to claim 7.
Claim 14
Dependent Claim
20 words
An underwater construction according to claim 12, wherein the coating has 10 to 150% by weight of water absorbing capacity.
References Cited (Backward Citations)
US3264370A
Cited
US3969300A
Cited
US3801534A
Cited
US3813447A
Cited
US3861949A
Cited
US3707516A
Cited
US3776892A
Cited
US3889025A
Cited
US3790533A
Cited
US3853822A
Cited
US3943187A
Cited
US3979354A
Cited
US4021392A
Cited
US3976615A
Cited
US4025693A
Cited
US4129610A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-10-22 | 1983-04-23 | 1983-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-22 | 1987-04-23 | 1987-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-22 | 1991-04-23 | 1991-10-23 | $7700.00 | Window Closed / Lapsed |