US4273632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aminoplast-containing radiation curing coating compositions
Assignee: Valspar Corp
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Filing: 1979-04-18
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Granted: 1981-06-16
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Expires: 1999-04-18
Abstract
Abstract Liquid ultraviolet-curable coating compositions are provided by mixing a polyethylenically unsaturated compound, such as pentraerythritol triacrylate, with a liquid monoethylenically unsaturated hydroxy functional polyether, such as the reaction product of propylene oxide with hydroxyethylacrylate. An aminoplast is included in the mixture so that a thermal cure, following the radiation cure, will result in a cured coating having increased ability to withstand fabrication stresses without loss of adhesion to the substrate.
Inventors
- 👤 Bizhan M. Zarnegar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:59
CPC Classifications
C; C09; C09D; C09D4/00; C09D4/06
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
61 words
A liquid radiation-curable coating composition comprising a mixture of polyethylenically unsaturated compound, liquid monoethylenically unsaturated hydroxy functional polyether, and from 1-25%, based on the total weight of ethylenically unsaturated material, of an aminoplast, whereby a thermal cure following the radiation cure yields a cured coating which exhibits an increased ability to withstand fabrication stresses without loss of adhesion to the substrate.
Claim 2
Dependent Claim
61 words
A liquid radiation-curable coating composition comprising a mixture of polyethylenically unsaturated compound, liquid monoethylenically unsaturated hydroxy functional polyether, and from 1-25%, based on the total weight of ethylenically unsaturated material, of an aminoplast, whereby a thermal cure following the radiation cure yields a cured coating which exhibits an increased ability to withstand fabrication stresses without loss of adhesion to the substrate.
Claim 3
Dependent Claim
17 words
A coating composition as recited in claim 1 in which said polyethylenically unsaturated compound is a polyacrylate.
Claim 4
Dependent Claim
33 words
A coating composition as recited in claim 1 in which said monoethylenically unsaturated hydroxy functional polyether is present in an amount of from 10-90% of the weight of the mixture of unsaturated compounds.
Claim 5
Dependent Claim
33 words
A coating composition as recited in claim 1 in which said monoethylenically unsaturated hydroxy functional polyether is present in an amount of from 40-80% of the weight of the mixture of unsaturated compounds.
Claim 6
Dependent Claim
37 words
A coating composition as recited in claim 1 in which said monoethylenically unsaturated hydroxy functional polyether is the reaction product of an alkylene monoxide with an hydroxyalkylacrylate to provide an average of 2-10 ether groups per molecule.
Claim 7
Dependent Claim
16 words
A coating composition as recited in claim 1 in which said aminoplast is a melamine-formaldehyde condensate.
Claim 8
Dependent Claim
16 words
A coating composition as recited in claim 6 in which said aminoplast is hexamethoxy methyl melamine.
Claim 9
Dependent Claim
22 words
A coating composition as recited in claim 1 in which said mixture includes photosensitizers for rendering the composition sensitive to ultraviolet light.
Claim 10
Dependent Claim
19 words
A coating composition as recited in claim 8 in which said photosensitizers include a ketonic photoinitiator and a co-initiator.
Claim 11
Dependent Claim
94 words
A liquid ultraviolet-curable coating composition comprising a mixture of polyacrylate, from 10-90% of the weight of the mixture of unsaturated compounds of a monoethylenically unsaturated hydroxy functional polyether formed by reaction of an alkylene monoxide with an hydroxyalkylacrylate, photsensitizers comprising a ketonic photoinitiator for rendering the composition sensitive to ultraviolet light, and from 1-25%, based on the total weight of ethylenically unsaturated material, of an aminoplast, whereby a thermal cure following the ultraviolet cure yields a cured coating which exhibits an increased ability to withstand fabrication stresses without loss of adhesion to the substrate.
Claim 12
Dependent Claim
94 words
A liquid ultraviolet-curable coating composition comprising a mixture of polyacrylate, from 10-90% of the weight of the mixture of unsaturated compounds of a monoethylenically unsaturated hydroxy functional polyether formed by reaction of an alkylene monoxide with an hydroxyalkylacrylate, photsensitizers comprising a ketonic photoinitiator for rendering the composition sensitive to ultraviolet light, and from 1-25%, based on the total weight of ethylenically unsaturated material, of an aminoplast, whereby a thermal cure following the ultraviolet cure yields a cured coating which exhibits an increased ability to withstand fabrication stresses without loss of adhesion to the substrate.
Claim 13
Dependent Claim
51 words
A coating composition as recited in claim 10 in which said alkylene monoxide is propylene oxide and said reaction product of said oxide and hydroxyalkylacrylate containing an average of from 2-10 ether groups per molecule is utilized in an amount of 40-80% of the weight of the mixture of unsaturated compounds.
Claim 14
Dependent Claim
15 words
A coating composition as recited in claim 11 in which said polyacrylate is hydroxy functional.
Claim 15
Dependent Claim
31 words
A coating composition as recited in claim 12 in which said polyacrylate is chosen from the group consisting of trimethylolpropanedicarylate, trimethylolpropanetriacrylate and pentraerythritol polyacrylate containing from 2.5-3.5 acrylate groups per molecule.
Claim 16
Dependent Claim
29 words
A coating composition as recited in claim 11 in which said aminoplast is present in an amount of from 3-20%, based on the total weight of ethylenically unsaturated material.
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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) | 1984-06-15 | 1984-12-15 | 1985-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-15 | 1988-12-15 | 1989-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-15 | 1992-12-15 | 1993-06-16 | $7700.00 | Window Closed / Lapsed |