Patent US3669942A successfully refreshed from Google Patents.
US3669942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of vinyl esters of branched acids
Assignee: Shell USA Inc
•
Filing: 1970-06-30
•
Granted: 1972-06-13
•
Expires: 1990-06-30
Abstract
Abstract Copolymers of (a) a vinyl ester of an alpha-branched, saturated, aliphatic monocarboxylic acid of five-20 carbon atoms, (b) an alpha,beta-ethylenically unsaturated carboxylic acid of three to five carbon atoms, (c) a monovinylaromatic compound of eight to nine carbon atoms, (d) a 2-hydroxyalkylester or an amide of an alpha,beta-ethylenically unsaturated carboxylic acid and, optionally, (e) a C1-C4 alkyl ester of acrylic or methacrylic acid and their preparation are described. These special copolymers are especially suitable in water-thinnable compositions, particularly in electrodepositable compositions to produce pore-free coatings or films.
Inventors
- 👤 William J Van Westrenen
- 👤 Pieter De Carpentier
- 👤 Willem H M Nieuwenhuis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:40
CPC Classifications
C; C09; C09D; C09D131/00; C09D131/02; C08; C08F; C08F18/00; C08F18/02; C08F18/04; C09D5/00; C09D5/44; C09D5/4407; C09D5/4411; Y; Y10; Y10S; Y10S526/00; Y10S526/932; Y10S526/934
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
26 words
A copolymer as in claim 1, wherein component (a) is a vinyl esTer of alpha-branched, saturated, aliphatic, monocarboxylic acids having from 9-11 carbon atoms per molecule.
Claim 2
Dependent Claim
26 words
A copolymer as in claim 1, wherein component (a) is a vinyl ester of an alpha-branched, saturated, aliphatic, monocarboxylic acid having 10 carbon atoms per molecule.
Claim 3
Dependent Claim
15 words
A copolymer as in claim 1, wherein component (b) is acrylic acid or methacrylic acid.
Claim 4
Dependent Claim
11 words
A copolymer as in claim 1, wherein component (c) is styrene.
Claim 5
Dependent Claim
13 words
A copolymer as in claim 1, wherein component (d) is 2-hydroxy ethyl methacrylate.
Claim 6
Dependent Claim
12 words
A copolymer as in claim 1, wherein component (e) is methyl methacrylate.
Claim 7
Dependent Claim
17 words
A copolymer as in claim 1, wherein the amount of component (a) is 40-70 percent by weight.
Claim 8
Dependent Claim
20 words
A copolymer as in claim 1, wherein the amount of components (b) and (c) is each 5-25 percent by weight.
Claim 9
Dependent Claim
43 words
A copolymer as in claim 1, comprising 40-60 percent by weight of component (a), 4-10 percent by weight of component (b), 10-30 percent by weight of component (c), 5-20 percent by weight of component (d), and 10-25 percent by weight of component (e).
Claim 10
Dependent Claim
11 words
A water-thinnable binder comprising a partially neutralized copolymer of claim 1.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |