Patent US4206294A successfully refreshed from Google Patents.
US4206294A
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Graft copolymers and coating compositions thereof
Assignee: EIDP Inc
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Filing: 1978-12-22
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Granted: 1980-06-03
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Expires: 1998-12-22
Abstract
Abstract A graft copolymer having a polymeric backbone with pendant hydroxyl groups; wherein the hydrogen atom of at least the one the hydroxyl groups is replaced by the formula ##STR1## where R is an aliphatic group, a cycloaliphatic group or an aromatic group; R 1 is an alkylene group having 2-6 carbon atoms; R 2 is a polymer segment of a vinyl addition polymer, such as butyl acrylate/hydroxyethyl acrylate; coating compositions of this copolymer can be cross-linked with conventional cross-linking agents such as an alkylated melamine formaldehyde resin or an organic polyisocyanate and coating compositions useful for flexible elastomeric substrates can be prepared from this copolymer.
Inventors
- 👤 John A. Simms
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:42
CPC Classifications
C; C09; C09D; C09D187/00; C09D187/005; C08; C08F; C08F251/00; C08F251/02; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/62; C08G18/63; C08G18/633; C08G18/70; C08G18/72; C08G18/80; C08G18/8003; C08G18/8054; C08G81/00; C08G81/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
102 words
A graft copolymer consisting essentially of about 25-95% by weight of a styrene/allyl alcohol polymer backbone and about 5-75% by weight of side chains; wherein the styrene/allyl alcohol polymer backbone contains pendent hydroxyl groups before the attachment of side chains by replacement of a hydrogen of at least one of the hydroxyl groups by the formula ##STR5## where R is an aliphatic group, a cycloaliphatic group or an aromatic group; R 1 is an alkylene group having 2-6 carbon atoms, R 2 , which forms a side chain, is a polymer segment of an acrylate, methacrylate, acrylic acid or methacrylic acid polymer.
Claim 2
Dependent Claim
102 words
A graft copolymer consisting essentially of about 25-95% by weight of a styrene/allyl alcohol polymer backbone and about 5-75% by weight of side chains; wherein the styrene/allyl alcohol polymer backbone contains pendent hydroxyl groups before the attachment of side chains by replacement of a hydrogen of at least one of the hydroxyl groups by the formula ##STR5## where R is an aliphatic group, a cycloaliphatic group or an aromatic group; R 1 is an alkylene group having 2-6 carbon atoms, R 2 , which forms a side chain, is a polymer segment of an acrylate, methacrylate, acrylic acid or methacrylic acid polymer.
Claim 3
Dependent Claim
22 words
The graft copolymer of claim 1 having a weight average molecular weight of about 5,000 to 1,000,000 determined by gel permeation chromatography.
Claim 4
Dependent Claim
19 words
The graft copolymer of claim 2 in which the R 2 is a polyalkyl acrylate or a polyalkyl methacrylate.
Claim 5
Dependent Claim
26 words
The graft copolymer of claim 3 in which R 2 is poly-2-ethylhexyl acrylate and R is cyclohexylene and R 1 is --(CH 2 --) 2 .
Claim 6
Dependent Claim
22 words
The graft copolymer of claim 1 in which the backbone consists essentially of styrene/allyl alcohol copolymer esterified with drying oil fatty acids.
Claim 7
Dependent Claim
22 words
The graft copolymer of claim 5 in which R 2 is polymethacrylic acid and R 1 is --(CH 2 --) 2 .
References Cited (Backward Citations)
US3028367A
Cited
US4016332A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-06-03 | 1983-12-03 | 1984-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-06-03 | 1987-12-03 | 1988-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-06-03 | 1991-12-03 | 1992-06-03 | $7700.00 | Window Closed / Lapsed |