US4342673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-solids coating compositions
Assignee: General Electric Co
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Filing: 1981-02-02
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Granted: 1982-08-03
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Expires: 2001-02-02
Abstract
Abstract Novel coating systems comprising high-solids content blends of epoxy prepolymers, a catalyst complex comprising a complex iodonium salt and a copper salt, and a conventional pigment. The compositions cure rapidly to highly chemically resistant, tough coatings.
Inventors
- 👤 Austin A. Wolfrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:04
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/226; C08G59/32; C08G59/38; C08G59/68; C09; C09D; C09D163/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
142 words
A pigmented, high-solids content, curable composition comprising (a) an epoxidic prepolymer or prepolymer blend comprising (i) a diglycidyl ether of cyclohexanedimethanol, (ii) a diglycidyl ether of bisphenol-A, (iii) a polyepoxidized phenol or cresol novolak, (iv) a polyglycidyl ether of a polyhydric alcohol, (v) an epoxidic ester having two epoxycycloalkyl groups, or (vi) a mixture of any of the foregoing; and (b) from 0.5 to 35 parts by weight per 100 parts by weight of (a) and (b) combined of a catalyst consisting essentially of (i) diphenyliodonium hexafluorophosphate, and (ii) from 0.01 parts to 10 parts, per part of (i), of a copper salt; and (iii) from 0.1 to 10 parts, per part of (i) and (ii) combined, of a tin salt; and (c) from 10 to 100 parts by weight, per 100 parts by weight of (a) and (b) of a pigment.
Claim 2
Dependent Claim
142 words
A pigmented, high-solids content, curable composition comprising (a) an epoxidic prepolymer or prepolymer blend comprising (i) a diglycidyl ether of cyclohexanedimethanol, (ii) a diglycidyl ether of bisphenol-A, (iii) a polyepoxidized phenol or cresol novolak, (iv) a polyglycidyl ether of a polyhydric alcohol, (v) an epoxidic ester having two epoxycycloalkyl groups, or (vi) a mixture of any of the foregoing; and (b) from 0.5 to 35 parts by weight per 100 parts by weight of (a) and (b) combined of a catalyst consisting essentially of (i) diphenyliodonium hexafluorophosphate, and (ii) from 0.01 parts to 10 parts, per part of (i), of a copper salt; and (iii) from 0.1 to 10 parts, per part of (i) and (ii) combined, of a tin salt; and (c) from 10 to 100 parts by weight, per 100 parts by weight of (a) and (b) of a pigment.
Claim 3
Dependent Claim
27 words
A composition as defined in claim 1 wherein component (a) comprises a mixture of (i) the diglycidyl ether of cyclohexanedimethanol and (ii) a diglycidyl ether of bisphenol-A.
Claim 4
Dependent Claim
25 words
A composition as defined in claim 1 wherein component (a) comprises a mixture of (i) the diglycidyl ether of cyclohexanedimethanol and (v) 3,4-epoxycyclohexylmethyl 3,4-epoxycyclohexane carboxylate.
Claim 5
Dependent Claim
15 words
A composition as defined in claim 1 wherein said copper salt (b)(ii) is copper naphthenate.
Claim 6
Dependent Claim
16 words
A composition as defined in claim 1 wherein the tin salt co-catalyst (d) is stannous octoate.
Claim 7
Dependent Claim
14 words
A composition as defined in claim 1 wherein said pigment (c) is titanium dioxide.
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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) | 1985-08-02 | 1986-02-01 | 1986-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-02 | 1990-02-01 | 1990-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-02 | 1994-02-01 | 1994-08-03 | $7700.00 | Window Closed / Lapsed |