Patent US4198495A successfully refreshed from Google Patents.
US4198495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cationic amine-functional copolymers and aqueous baths containing the same
Assignee: DeSoto Inc
•
Filing: 1979-03-15
•
Granted: 1980-04-15
•
Expires: 1999-03-15
Abstract
Abstract Cationic amine functional copolymers which are stably dispersible in water with the aid of water miscible organic solvent, and which cure to provide superior detergent and corrosion resistance are provided by forming a solution copolymer of monoethylenically unsaturated monomers including from 3% to 35% of monomer having a basic amino groups and from 35% to 50% of isobutoxymethyl acrylamide or methacrylamide, the copolymer being neutralized up to about 90% with a solubilizing acid to render the copolymer cationic and dispersible in water.
Inventors
- 👤 Kazys Sekmakas
- 👤 Raj Shah
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:21
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/44; C08F220/00; C08F220/02; C08F220/52; C08F220/54; C08F220/58; Y; Y10; Y10S; Y10S524/00; Y10S524/901
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
108 words
Cationic amine-functional copolymer which is a solution copolymer of monoethylenically unsaturated monomers consisting essentially of from 3% to 35% of monomer having a basic amino group, from 35% to 50% of isobutoxymethyl acrylamide or methacrylamide, from 0% to 15% of monomer providing active hydrogen atoms coreactive with N-methylol functionality, and the balance of the copolymer consisting essentially of nonreactive monomers, said proportions being based on the weight of the copolymer, and the amine groups in the copolymer being neutralized in an amount up to about 90% by a solubilizing acid to render said copolymer cationic and dispersible in water with the aid of a water miscible organic solvent.
Claim 2
Dependent Claim
108 words
Cationic amine-functional copolymer which is a solution copolymer of monoethylenically unsaturated monomers consisting essentially of from 3% to 35% of monomer having a basic amino group, from 35% to 50% of isobutoxymethyl acrylamide or methacrylamide, from 0% to 15% of monomer providing active hydrogen atoms coreactive with N-methylol functionality, and the balance of the copolymer consisting essentially of nonreactive monomers, said proportions being based on the weight of the copolymer, and the amine groups in the copolymer being neutralized in an amount up to about 90% by a solubilizing acid to render said copolymer cationic and dispersible in water with the aid of a water miscible organic solvent.
Claim 3
Dependent Claim
22 words
A cationic amine-functional copolymer as recited in claim 1 in which said monomer having a basic amino group is a tertiary amine.
Claim 4
Dependent Claim
21 words
A cationic amine-functional copolymer as recited in claim 2 in which said monomer is a dimethyl amino alkyl acrylate or methacrylate.
Claim 5
Dependent Claim
24 words
A cationic amine-functional copolymer as recited in claim 1 in which said copolymer includes from 1% to 10% of a monoethylenically unsaturated carboxylic acid.
Claim 6
Dependent Claim
23 words
A cationic amine-functional copolymer as recited in claim 1 in which said copolymer is neutralized in an amount of from 25% to 75%.
Claim 7
Dependent Claim
15 words
A cationic amine-functional copolymer as recited in claim 1 in which isobutoxymethyl acrylamide is used.
Claim 8
Dependent Claim
18 words
A cationic amine-functional copolymer as recited in claim 1 in which the nonreactive monomers consist essentially of styrene.
Claim 9
Dependent Claim
24 words
A cationic amine-functional copolymer as recited in claim 1 in which said amine monomer is used in an amount of from 10% to 25%.
Claim 10
Dependent Claim
32 words
A cationic amide-functional copolymer as recited in claim 1 in which said copolymer is present in stable dispersion in water to provide a bath having a pH in excess of pH 5.0.
Claim 11
Dependent Claim
23 words
A cationic amine-functional copolymer as recited in claim 1 in which said water dispersion has a pH in the range of pH 6.0-7.0.
Claim 12
Dependent Claim
34 words
A cationic amine-functional copolymer as recited in claim 1 in which said monomer having a basic amino group contains from 3 to 20 carbon atoms, and the amino group is a tertiary amino group.
References Cited (Backward Citations)
US3455806A
Cited
US3454482A
Cited
US3446723A
Cited
US3458420A
Cited
US3985698A
Cited
US4071650A
Cited
US3976615A
Cited
US4085020A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-04-15 | 1983-10-15 | 1984-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-15 | 1987-10-15 | 1988-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-15 | 1991-10-15 | 1992-04-15 | $7700.00 | Window Closed / Lapsed |