US4555535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acrylic polyurethane coating composition
Assignee: EIDP Inc
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Filing: 1984-03-07
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Granted: 1985-11-26
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Expires: 2004-03-07
Abstract
Abstract A coating composition in which the binder contains the following: (1) an acrylic polymer having pendent hydroxyl containing ester groups of ester group A of the formula ##STR1## and ester group (B) which is either ##STR2## or wherein R 1 is a saturated hydrocarbon group having 2-4 carbon atoms, R 2 is a tertiary hydrocarbon group having 8 through 10 carbon atoms; and (2) an aliphatic, aromatic or cycloaliphatic polyisocyanate; The composition can be used as an unpigmented clear finish or can contain convention pigments and be used as a colored finish. The composition is useful for refinishing trucks and automobiles and as an original finish for trucks, automobiles, boats, outdoor equipment and the like since the resulting finish in glossy, durable and weatherable.
Inventors
- 👤 Milan B. Bednarek
- 👤 Eric C. Houze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:27
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/521; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/62; C08G18/6216; C08G18/625; C08G18/6258; C08G18/70; C08G18/72; C08G18/77; C08G18/78; C08G18/79; C09; C09D; C09D175/00; C09D175/04
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
181 words
A coating composition having a binder solids content of 5-75% by weight and 95-25% by weight in an organic liquid; wherein the binder consists essentially of about (1) 50-95% by weight of an acrylic polymer having a backbone consisting essentially of polymerized monomers selected from the group consisting of alkyl methacrylate, alkyl acrylate each having 1-12 carbon atoms in the alkyl group, styrene or mixtures thereof and polymerized ethylenically unsaturated ester monomers that form ester groups pending from the carbon atoms of the polymer backbone and consist of about 10 to 75% of the total weight of the polymer and consist of ester group (A) ##STR9## and ester group (B) selected from the group consisting of ##STR10## or mixtures thereof; wherein ester group B is formed by reacting carboxyl groups pending from the backbone of the acrylic polymer with glycidyl esters of the formula ##STR11## R 1 is a saturated hydrocarbon group having 2-4 carbon atoms, R 2 is a tertiary hydrocarbon group having 8 through 10 carbon atoms; and (2) 5-50% by weight of an aliphatic, aromatic or cycloaliphatic polyisocyanate.
Claim 2
Dependent Claim
181 words
A coating composition having a binder solids content of 5-75% by weight and 95-25% by weight in an organic liquid; wherein the binder consists essentially of about (1) 50-95% by weight of an acrylic polymer having a backbone consisting essentially of polymerized monomers selected from the group consisting of alkyl methacrylate, alkyl acrylate each having 1-12 carbon atoms in the alkyl group, styrene or mixtures thereof and polymerized ethylenically unsaturated ester monomers that form ester groups pending from the carbon atoms of the polymer backbone and consist of about 10 to 75% of the total weight of the polymer and consist of ester group (A) ##STR9## and ester group (B) selected from the group consisting of ##STR10## or mixtures thereof; wherein ester group B is formed by reacting carboxyl groups pending from the backbone of the acrylic polymer with glycidyl esters of the formula ##STR11## R 1 is a saturated hydrocarbon group having 2-4 carbon atoms, R 2 is a tertiary hydrocarbon group having 8 through 10 carbon atoms; and (2) 5-50% by weight of an aliphatic, aromatic or cycloaliphatic polyisocyanate.
Claim 3
Dependent Claim
25 words
The coating composition of claim 1 in which the polyisocyanate has the formula ##STR12## where R 4 is a hydrocarbon group having 6 carbon atoms.
Claim 4
Dependent Claim
16 words
The coating composition of claim 1 in which the polyisocyanate is the biuret of hexamethylene diisocyanate.
Claim 5
Dependent Claim
24 words
The coating composition of claim 1 in which the molar ratio of ester group (A) to ester group (B) is about 1:1 to 1:25.
Claim 6
Dependent Claim
38 words
The coating composition of claim 4 in which the acrylic polymer consists essentially of 20-40% by weight styrene, 10-30% by weight methyl methacrylate, 5-25% by weight of hydroxyl ethyl methacrylate and 15-65% by weight of ester group (B).
Claim 7
Dependent Claim
25 words
The coating composition of claim 1 containing in addition about 0.05-1.0% by weight, based on the weight of the binder, of an alkyl acid phosphate.
Claim 8
Dependent Claim
16 words
The coating composition of claim 6 in which the alkyl acid phosphate is butyl acid phosphate.
Claim 9
Dependent Claim
25 words
The coating composition of claim 1 containing in addition about 0.01-0.10% by weight, based on the weight of the binder, of an organo metal catalyst.
Claim 10
Dependent Claim
13 words
The coating composition of claim 8 in which the catalyst is dibutyltin dilaurate.
Claim 11
Dependent Claim
24 words
The coating composition of claim 1 containing in addition about 0.5-5% by weight, based on the weight of the binder, of ultraviolet light stabilizer.
Claim 12
Dependent Claim
24 words
The coating composition of claim 10 in which the ultraviolet light stabilizer is a blend of a benzotriazole and a hindered amine light stabilizer.
Claim 13
Dependent Claim
21 words
The coating composition of claim 1 containing in addition pigment in a pigment to binder ratio of about 0.1/100 to 100/100.
Claim 14
Dependent Claim
14 words
The coating composition of claim 12 in which the pigment contains metallic flake pigments.
Claim 15
Dependent Claim
54 words
The coating composition of claim 13 containing in addition 1-15% by weight, based on the weight of the binder, of cellulose acetate butyrate having a butyryl content of about 50-60% by weight, a hydroxyl content of about 1.0-3.0% by weight, and a viscosity of 0.02-5.0 seconds measured at 25° C. according to ASTM D-1343-56.
Claim 16
Dependent Claim
68 words
The coating composition of claim 14 containing in addition about 0.05-1.0% by weight, based on the weight of the binder, of an alkyl acid phosphate, 0.5-5% by weight, based on the weight of the binder, of a blend of ultraviolet light stabilizer of a benzotriazole and a hindered amine light stabilizer and 0.01-0.10% by weight, based on the weight of the binder, of an alkyl tin laurate catalyst.
Claim 17
Dependent Claim
80 words
The coating composition of claim 1 wherein (1) the acrylic polymer has a backbone of styrene and methyl methacrylate and ester group A is from hydroxy ethyl acrylate and ester group B is the esterification of methacrylic acid of the backbone with glycidyl ester of a tertiary carboxylic acid and wherein R 1 is (CH 2 ) 2 , and R 2 is a tertiary hydrocarbon group having 8 through 10 carbon atoms; and (2) the polyisocyanate is 1,3,5-tris(6-isocyanatohexyl)1,3,5-triazine 2,4,6(1H,3H,5H)trione.
Claim 18
Dependent Claim
31 words
The coating composition of claim 16 containing in addition 0.5-5% by weight, based on the weight of the binder, of a blend of ultraviolet light stabilizers consisting of 2-[2-hydroxy-3,5-1(1-1-dimethylpropyl)phenyl]benzotriazole and bis-[4-(1,2,2,6,6-pentamethylpiperidyl)]2-butyl-2-[(3,5,-t-butyl-4-hydroxyphenyl)methyl]propanedioate.
Claim 19
Dependent Claim
23 words
The coating composition of claim 17 containing in addition about 0.05-2% by weight, based on the weight of the binder, of polydimethyl siloxane.
Claim 20
Dependent Claim
25 words
The coating composition of claim 18 containing in addition about 0.05-2% by weight, based on the weight of the binder of poly 2-ethyl hexyl acrylate.
Claim 21
Dependent Claim
28 words
The coating composition of claim 16 containing in addition 0.1-5% by weight, based on the weight of the binder, of an ultraviolet light stabilizer consisting of bis(1,2,2,6,6-pentamethyl-4-piperidinyl)decane dioate.
Claim 22
Dependent Claim
21 words
The coating composition of claim 16 containing in addition pigment in a pigment to binder ratio of about 0.1/100 to 100/100.
Claim 23
Dependent Claim
38 words
A substrate coated with a layer of the composition of claim 1 containing pigment in a pigment to binder ratio of about 0.1/100 to 100/100 and having superimposed thereon a layer of a clear composition of claim 1.
Claim 24
Dependent Claim
55 words
A substrate coated with a layer of the composition of claim 1 containing pigment in a pigment to binder ratio of about 0.1/100 to 100/100 and having super imposed thereon a layer of a clear composition of claim 1 containing a blend of ultraviolet light stabilizers of a benzotriazole and a hindered amine light stabilizer.
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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) | 1988-11-25 | 1989-05-27 | 1989-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-25 | 1993-05-27 | 1993-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-25 | 1997-05-27 | 1997-11-26 | $7700.00 | Window Closed / Lapsed |