Patent US4172157A successfully refreshed from Google Patents.
US4172157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aminoplast/alkyd coating composition
Assignee: Celanese Corp
•
Filing: 1978-09-19
•
Granted: 1979-10-23
•
Expires: 1998-09-19
Abstract
Abstract This invention provides an acid-hardening resin composition which is activated by exposure to actinic light, wherein the composition is a condensation polymerizable blend of (1) an aminoplast, (2) an alkyd resin; and (3) a sulfolene catalyst. When the invention coating composition is subjected to ultraviolet light exposure and a subsequent bake cycle, a film is obtained which has good mechanical properties and excellent adherence to substrates. In a further embodiment, a superior substantially 100% solids coating system is provided which comprises (1) an aminoplast; (2) an alkyd resin; (3) a sulfolene catalyst; (4) a photoinitiator; and (5) a polymerizable olefinically unsaturated monomer or prepolymer.
Inventors
- 👤 Michael T. Nowak
- 👤 John P. Walsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:28
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/46; C08G63/47; C09; C09D; C09D167/00; C09D167/06
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
32 words
An acid-hardening resin composition which is activated by exposure to actinic light, said composition comprising a blend of (1) condensation polymerizable aminoplast; (2) condensation polymerizable alkyd resin; and (3) a sulfolene catalyst.
Claim 2
Dependent Claim
32 words
An acid-hardening resin composition which is activated by exposure to actinic light, said composition comprising a blend of (1) condensation polymerizable aminoplast; (2) condensation polymerizable alkyd resin; and (3) a sulfolene catalyst.
Claim 3
Dependent Claim
23 words
A condensation polymerizable coating composition comprising a blend of (1) an aminoplast; (2) alkyd resin; (3) a sulfolene catalyst; and (4) a photoinitiator.
Claim 4
Dependent Claim
23 words
A condensation polymerizable coating composition comprising a blend of (1) an aminoplast; (2) alkyd resin; (3) a sulfolene catalyst; and (4) a photoinitiator.
Claim 5
Dependent Claim
67 words
A condensation polymerizable coating composition comprising a homogeneous liquid blend of (1) between about 20 and 50 weight percent of aminoplast or aminoplast precursor, (2) between about 50 and 80 weight percent of residual hydroxy-containing alkyd resin, (3) between about 0.5 and 15 weight percent of a sulfolene catalyst; and (4) between about 0.1 and 10 weight percent of a photoinitiator; based on total aminoplast/alkyd resin weight.
Claim 6
Dependent Claim
67 words
A condensation polymerizable coating composition comprising a homogeneous liquid blend of (1) between about 20 and 50 weight percent of aminoplast or aminoplast precursor, (2) between about 50 and 80 weight percent of residual hydroxy-containing alkyd resin, (3) between about 0.5 and 15 weight percent of a sulfolene catalyst; and (4) between about 0.1 and 10 weight percent of a photoinitiator; based on total aminoplast/alkyd resin weight.
Claim 7
Dependent Claim
38 words
A condensation polymerizable coating composition in accordance with claim 3 wherein the aminoplast or aminoplast precursor is selected from condensation products of aldehyde with melamine, urea, dicyandiamide and benzoquanamine, and mixtures and etherified derivatives of the condensation products.
Claim 8
Dependent Claim
38 words
A condensation polymerizable coating composition in accordance with claim 3 wherein the composition contains as an additional component between about 2 and 30 weight percent of polymerizable olefinically unsaturated monomer or prepolymer, based on total aminoplast/alkyd resin weight.
Claim 9
Dependent Claim
25 words
A condensation polymerizable coating composition in accordance with claim 5 wherein the olefinically unsaturated monomer or prepolymer is an α,β-olefinically unsaturated carboxylate ester of trimethylolpropane.
Claim 10
Dependent Claim
25 words
A condensation polymerizable coating composition in accordance with claim 5 wherein the olefinically unsaturated monomer or prepolymer is an α,β-olefinically unsaturated carboxylate ester of pentaerythritol.
Claim 11
Dependent Claim
25 words
A condensation polymerizable coating composition in accordance with claim 5 wherein the olefinically unsaturated monomer or prepolymer is an α,β-olefinically unsaturated carboxylate ester of glycerol.
Claim 12
Dependent Claim
48 words
A method of applying a protective film to a substrate which comprises the steps of (1) coating the substrate surface with the acid-hardening resin composition of claim 3, and (2) exposing the coated surface to actinic light to activate the condensation polymerization between the aminoplast and alkyd components.
Claim 13
Dependent Claim
44 words
A process for preparing a hard glossy film which comprises (1) casting the acid-hardening resin composition of claim 3 on a substrate surface, (2) irradiating the cast resin composition with ultraviolet light, and (3) accelerating the curing of the resin composition by heat treatment.
References Cited (Backward Citations)
US3476709A
Cited
US3703454A
Cited
US3650927A
Cited
US3647520A
Cited
US4125678A
Cited
US4129681A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-10-22 | 1983-04-23 | 1983-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-22 | 1987-04-23 | 1987-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-22 | 1991-04-23 | 1991-10-23 | $7700.00 | Window Closed / Lapsed |