Patent US20030124079A1 successfully refreshed from Google Patents.
USRE30259E
Expired / Lapsed
US
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Water-soluble thermosetting resins and use thereof
Assignee: Japan Carlit Co Ltd
•
Filing: 1979-02-23
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Granted: 1980-04-22
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Expires: 1999-02-23
Abstract
Abstract Disclosed is a novel water-soluble thermosetting resin which has the property of providing paper with a nearly constant wet and dry strength over a wide pH range according to methods of wet-end additions or surface applications.
Inventors
- 👤 Koichi Moriya
- 👤 Iwao Honda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:19
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/34; C; C08; C08F; C08F220/00; C08F220/02; C08F220/52; C08F220/54; D21H17/37; D21H17/38; D21H17/39; D21H17/41; D21H17/42; D21H17/43; D21H17/44; D21H17/45; D21H17/455
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
138 words
A thermosetting resin of the formula ##STR15## wherein: R 1 , R 2 , .[.and.]. R 3 and R 6 are independently selected from the group consisting of hydrogen and a methyl group, R 4 and R 5 are each an alkyl group having .Badd.1 to 3 carbon atoms, A is an alkylene group having 2 to 6 carbon atoms, X is selected from the group consisting of chlorine, bromine and iodine, Y is an anion selected from the group consisting of nitrate ion, .[.chlorine.]. .Iadd.chloride .Iaddend.ion, sulfate ion and phosphate ion, p, q, r and s are molar ratios of the recurring units arranged linearly and irregularly, and are the whole numbers .[.which are.]. .Iadd.having the relation of .Iaddend.q/(p+q)=0.1-1.0, r/(p+q+r+s)=0.001-0.05 and s/r=0.5-1.5; or s=0, q/(p+q)=0.1-1.0, r/(p+q+r)=0.001-0.05, and n is .Iadd.a number of .Iaddend.about 100 to about 1000.
Claim 2
Dependent Claim
138 words
A thermosetting resin of the formula ##STR15## wherein: R 1 , R 2 , .[.and.]. R 3 and R 6 are independently selected from the group consisting of hydrogen and a methyl group, R 4 and R 5 are each an alkyl group having .Badd.1 to 3 carbon atoms, A is an alkylene group having 2 to 6 carbon atoms, X is selected from the group consisting of chlorine, bromine and iodine, Y is an anion selected from the group consisting of nitrate ion, .[.chlorine.]. .Iadd.chloride .Iaddend.ion, sulfate ion and phosphate ion, p, q, r and s are molar ratios of the recurring units arranged linearly and irregularly, and are the whole numbers .[.which are.]. .Iadd.having the relation of .Iaddend.q/(p+q)=0.1-1.0, r/(p+q+r+s)=0.001-0.05 and s/r=0.5-1.5; or s=0, q/(p+q)=0.1-1.0, r/(p+q+r)=0.001-0.05, and n is .Iadd.a number of .Iaddend.about 100 to about 1000.
Claim 3
Dependent Claim
36 words
The resin of claim 1 wherein p, q, r and s are molar ratios of the recurring units arranged linearly and irregularly, and are the whole numbers .[.which are.]. .Iadd.having the relation of .Iaddend.q/(p+q)=0.01-1.0, r/(p+q+r+s)=0.001-0.05, s/r=0.5-1.5.
Claim 4
Dependent Claim
35 words
The resin of claim 2 wherein R 1 , R 2 and R 6 are each hydrogen, and R 3 , R 4 and R 5 are each a methyl group and X is chlorine.
Claim 5
Dependent Claim
35 words
The resin of claim 2 wherein R 1 and R 2 are each hydrogen, and R 3 , R 4 , R 5 and R 6 are each a methyl group and X is chlorine.
Claim 6
Dependent Claim
11 words
The resin of claim 3 wherein Y is a nitrate ion.
Claim 7
Dependent Claim
11 words
The resin of claim 4 wherein Y is a nitrate ion.
Claim 8
Dependent Claim
12 words
The resin of claim 3 wherein Y is a .[.chlorine.]. .Iadd.chloride .Iaddend.ion.
Claim 9
Dependent Claim
12 words
The resin of claim 4 wherein Y is a .[.chlorine.]. .Iadd.chloride .Iaddend.ion.
Claim 10
Dependent Claim
35 words
The resin of claim 1 wherein s=0; p, q and r are molar ratios of the recurring units arranged linearly and irregularly, and are the whole numbers .[.which are.]. .Iadd.having the relation of .Iaddend.q/(p+q)=0.1-1.0, r/(p+q+r)=0.001-0.05.
Claim 11
Dependent Claim
32 words
The resin of claim 9 wherein R 1 and R 2 are each hydrogen, and R 3 , R 4 and R 5 are each a methyl group and X is chlorine.
Claim 12
Dependent Claim
11 words
The resin of claim 10 wherein Y is a nitrate ion.
Claim 13
Dependent Claim
12 words
The resin of claim 10 wherein Y is a .[.chlorine.]. .Iadd.chloride .Iaddend.ion.
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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) | 1983-04-22 | 1983-10-22 | 1984-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-22 | 1987-10-22 | 1988-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-22 | 1991-10-22 | 1992-04-22 | $7700.00 | Window Closed / Lapsed |