Patent US4477609A successfully refreshed from Google Patents.
US4477609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrosol coating compositions having improved stability
Assignee: BASF Corp
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Filing: 1983-07-20
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Granted: 1984-10-16
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Expires: 2003-07-20
Abstract
Abstract An improved, stabilized container coating composition of an amine solubilized hydrosol resin solution of: (a) an acrylic-poly(vinyl acetal) co-resin having a number average molecular weight above 10,000 and a glass transition temperature of -20° C. to +60° C.; (b) an epoxy resin having a molecular weight of 300 to 8,000; and on the average 2 or less than 2 epoxy groups per molecule; and (c) an aminoplast, a phenolplast resin, or combination thereof.
Inventors
- 👤 Patrick F. Aluotto
- 👤 Paul A. Drees
- 👤 Charles A. Soucek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:04
CPC Classifications
C; C09; C09D; C09D151/00; C09D151/003
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
76 words
A hydrosol coating composition comprising (a) 50-90% of an acrylic-poly(vinyl acetal) co-resin of which the acrylic moiety has two or more reactive sites per polymer chain, (b) 5-50% of an epoxy resin having on the average 2 or less than 2 epoxide groups per polymer chain with at least one hydroxyl group per polymer chain and having an average molecular weight of 300 to 8,000, (c) 3-40% of an aminoplast or phenolplast resin or combination thereof.
Claim 2
Dependent Claim
76 words
A hydrosol coating composition comprising (a) 50-90% of an acrylic-poly(vinyl acetal) co-resin of which the acrylic moiety has two or more reactive sites per polymer chain, (b) 5-50% of an epoxy resin having on the average 2 or less than 2 epoxide groups per polymer chain with at least one hydroxyl group per polymer chain and having an average molecular weight of 300 to 8,000, (c) 3-40% of an aminoplast or phenolplast resin or combination thereof.
Claim 3
Dependent Claim
31 words
The hydrosol coating composition of claim 1 wherein the acrylic-poly(vinyl acetal) co-resin has a number average molecular weight above 10,000 and a glass transition temperature of -20° C. to +60° C.
Claim 4
Dependent Claim
34 words
The hydrosol coating composition of claim 1 wherein the acrylic polymer has at least two or more reactive sites selected from any of the group consisting of carboxyl, hydroxyl, epoxide, methylol, amide and amine.
Claim 5
Dependent Claim
15 words
The hydrosol coating composition according to claim 1 wherein the composition additionally contains a lubricant.
Claim 6
Dependent Claim
78 words
A hydrosol coating composition comprising (a) 50-90% of an acrylic-poly(vinyl acetal) co-resin of which the acrylic moiety has at least two or more reactive sites per polymer chain, (b) 5-50% of an epoxy resin having on the average 2 or less than 2 epoxide groups per polymer chain with at least one hydroxy group per polymer chain and having an average molecular weight of 300 to 8,000, (c) 3-40% of an aminoplast or phenolplast resin or combination thereof.
Claim 7
Dependent Claim
78 words
A hydrosol coating composition comprising (a) 50-90% of an acrylic-poly(vinyl acetal) co-resin of which the acrylic moiety has at least two or more reactive sites per polymer chain, (b) 5-50% of an epoxy resin having on the average 2 or less than 2 epoxide groups per polymer chain with at least one hydroxy group per polymer chain and having an average molecular weight of 300 to 8,000, (c) 3-40% of an aminoplast or phenolplast resin or combination thereof.
Claim 8
Dependent Claim
31 words
The hydrosol coating composition of claim 5 wherein the acrylic-poly(vinyl acetal) co-resin has a number average molecular weight above 10,000 and a glass transition temperature of -20° C. to +60° C.
Claim 9
Dependent Claim
40 words
The hydrosol coating composition of claim 5 wherein the acrylic moiety of the acrylic-poly(vinyl acetal) co-resin system has at least two or more reactive sites selected from any of the groups consisting of carboxyl, hydroxyl, epoxide, methylol, amide and amine.
Claim 10
Dependent Claim
15 words
The hydrosol coating composition according to claim 5 wherein the composition additionaly contains a lubricant.
References Cited (Backward Citations)
US4021396A
Cited
US4377433A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-10-16 | 1988-04-16 | 1988-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-16 | 1992-04-16 | 1992-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-16 | 1996-04-16 | 1996-10-16 | $7700.00 | Window Closed / Lapsed |