Patent US4237241A successfully refreshed from Google Patents.
US4237241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating compositions including hydroxy phosphate catalyst
Assignee: EIDP Inc
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Filing: 1978-09-22
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Granted: 1980-12-02
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Expires: 1998-09-22
Abstract
Abstract An improved thermosetting coating composition of the type comprising a film forming component and an amine aldehyde compound, wherein the composition cures by reaction between the amine aldehyde compound and hydroxy functionality present on the film forming material. The improvement comprises including in the composition a catalyst comprising at least one hydroxy functional organophosphate ester selected from certain mono- and diesters of phosphoric acid.
Inventors
- 👤 Mohinder S. Chattha
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:52
CPC Classifications
C; C09; C09D; C09D201/00; C09D201/02; C09D201/06; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/32; C08G59/3209; C08G59/40; C08G59/4007; C08G59/4071
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
96 words
A thermosetting coating composition comprising a film forming component and an amine aldehyde compound, which composition cures by reaction between said amine aldehyde compound and hydroxy functionality present on said film forming material, which hydroxy functionality is either initially present, generated in situ, or both initially present and generated in situ, the improvement comprising including in said composition a catalyst for said reaction comprising at least one hydroxy functional organophosphate ester having the formula: ##STR3## wherein n=1 to 2 and R is selected from the group consisting of mono- or dihydroxy alkyl, cycloalkyl or aryl radicals.
Claim 2
Dependent Claim
96 words
A thermosetting coating composition comprising a film forming component and an amine aldehyde compound, which composition cures by reaction between said amine aldehyde compound and hydroxy functionality present on said film forming material, which hydroxy functionality is either initially present, generated in situ, or both initially present and generated in situ, the improvement comprising including in said composition a catalyst for said reaction comprising at least one hydroxy functional organophosphate ester having the formula: ##STR3## wherein n=1 to 2 and R is selected from the group consisting of mono- or dihydroxy alkyl, cycloalkyl or aryl radicals.
Claim 3
Dependent Claim
20 words
A composition in accordance with claim 1 wherein said film forming material consists essentially of a compound bearing hydroxy functionality.
Claim 4
Dependent Claim
22 words
A composition in accordance with claim 2 wherein said film forming material has a number average molecular weight of at least 150.
Claim 5
Dependent Claim
85 words
A composition in accordance with claim 2 wherein said film forming material consists essentially of a copolymer bearing pendant hydroxy functionality, having a number average molecular weight (M n ) of between about 1000 and about 20,000 and a glass transition temperature (Tg) of between about -25° C. and about 70° C., said copolymer consisting of between about 5 and about 30 weight percent of monoethylenically unsaturated monomers bearing hydroxy functionality and between about 95 and about 70 weight percent of other monoethylenically unsaturated monomers.
Claim 6
Dependent Claim
31 words
A coating composition in accordance with claim 1 wherein said film forming material consists essentially of a compound which reacts in situ during cure of said composition to form hydroxy functionality.
Claim 7
Dependent Claim
25 words
A coating composition in accordance with claim 5 wherein said reaction in situ forms substantially all of the crosslinking functionality in said film forming material.
Claim 8
Dependent Claim
28 words
A coating composition in accordance with claim 5 wherein said film forming material includes hydroxy functionality in addition to that which is formed by said reaction in situ.
Claim 9
Dependent Claim
38 words
A coating composition in accordance with claim 5 wherein said compound bears epoxy functionality which reacts with said organophosphate ester during cure of said composition to form hydroxy functionality which, in turn, reacts with said amine aldehyde compound.
Claim 10
Dependent Claim
24 words
A coating composition in accordance with claim 1 wherein said film forming material consists essentially of a compound bearing both epoxy and hydroxy functionality.
Claim 11
Dependent Claim
30 words
A coating composition in accordance with claim 1 wherein said film forming material consists essentially of a mixture of a compound bearing hydroxy functionality and a compound bearing epoxy functionality.
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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) | 1983-12-02 | 1984-06-02 | 1984-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-02 | 1988-06-02 | 1988-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-02 | 1992-06-02 | 1992-12-02 | $7700.00 | Window Closed / Lapsed |