US4133909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation curable aqueous coatings
Assignee: Valspar Corp
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Filing: 1977-01-26
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Granted: 1979-01-09
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Expires: 1997-01-26
Abstract
Abstract High solids, low viscosity, radiation curable, aqueous coatings compositions are provided by adding a small proportion of water to a polyethylenically unsaturated resin, preferably a liquid polyester containing acrylate groups and carboxyl functionality enabling improved dispersibility with water in the presence of a base, and a water soluble monoethylenically unsaturated monomer selected from acrylamide and N-methylol acrylamide is added to lower the viscosity of the composition and also to improve the cure. An ultraviolet photosensitizer, such as benzophenone, is added, preferably together with a tertiary amine cosensitizer, to enable ultraviolet cure.
Inventors
- 👤 Arthur T. Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:44
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/66; C08F; C08F299/00; C08F299/02; C08F299/04; C08F299/0478; C08G63/68; C08G63/685; C08G63/6854; C08K; C08K5/00; C08K5/16; C08K5/20; C09; C09D; C09D151/00; C09D151/08; C09D167/00
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
83 words
A method of coating comprising applying to a substrate a wet coating of a high solids, low viscosity, radiation curable, coating composition comprising, a polyethylenically unsaturated resin, from about 4% to about 30% of water in compatible mixture with said resin, and at least 5% of a water soluble monoethylenically unsaturated monomer selected from acrylamide and N-methylol acrylamide dissolved in the water, said percentages being based on the weight of the resin, and subjecting said wet coating to radiation to cure the same.
Claim 2
Independent Claim
83 words
A method of coating comprising applying to a substrate a wet coating of a high solids, low viscosity, radiation curable, coating composition comprising, a polyethylenically unsaturated resin, from about 4% to about 30% of water in compatible mixture with said resin, and at least 5% of a water soluble monoethylenically unsaturated monomer selected from acrylamide and N-methylol acrylamide dissolved in the water, said percentages being based on the weight of the resin, and subjecting said wet coating to radiation to cure the same.
Claim 3
Dependent Claim
26 words
A method as recited in claim 1 in which said polyethylenically unsaturated resin contains carboxyl functionality and a base is present to enhance miscibility with water.
Claim 4
Dependent Claim
33 words
A method as recited in claim 2 in which said polyethylenically unsaturated resin is a liquid hydroxy functional polyester resin having hydroxy groups reacted with an acrylic monomer to provide acrylate groups therein.
Claim 5
Dependent Claim
26 words
A method as recited in claim 3 in which said polyester resin includes a polyethylene glycol component and an acid number of at least about 20.
Claim 6
Dependent Claim
15 words
A method as recited in claim 3 in which said water soluble monomer is acrylamide.
Claim 7
Dependent Claim
16 words
A method as recited in claim 3 in which said water soluble monomer is N-methylol acrylamide.
Claim 8
Dependent Claim
15 words
A method as recited in claim 1 in which said coating composition includes a photosensitzer.
Claim 9
Dependent Claim
15 words
A method as recited in claim 7 in which said photosensitizer is a ketonic photosensitizer.
Claim 10
Dependent Claim
13 words
A method as recited in claim 8 in which said photosensitizer is benzophenone.
Claim 11
Dependent Claim
17 words
A method as recited in claim 8 in which said coating composition includes a tertiary amine cosensitizer.
Claim 12
Dependent Claim
33 words
A method as recited in claim 1 in which said coating composition contains from about 10% to about 25% of water and at least about 10% of said water soluble monomer is present.
Claim 13
Dependent Claim
83 words
A high solids, low viscosity, ultraviolet curable, coating composition comprising, a polyethylenically unsaturated resin which is a liquid polyester polyacrylate having an acid number of at least about 20, from about 10% to about 25%, of water incorporated in said resin with the aid of a tertiary amine, a phenyl ketone photosensitizer, and at least 10% of a water soluble monoethylenically unsaturated monomer selected from acrylamide and N-methylol acrylamide dissolved in the water, said percentages being based on the weight of the resin.
Claim 14
Dependent Claim
83 words
A high solids, low viscosity, ultraviolet curable, coating composition comprising, a polyethylenically unsaturated resin which is a liquid polyester polyacrylate having an acid number of at least about 20, from about 10% to about 25%, of water incorporated in said resin with the aid of a tertiary amine, a phenyl ketone photosensitizer, and at least 10% of a water soluble monoethylenically unsaturated monomer selected from acrylamide and N-methylol acrylamide dissolved in the water, said percentages being based on the weight of the resin.
Claim 15
Dependent Claim
54 words
A coating composition as recited in claim 12 in which said polyester is an oil-free hydroxy functional polyester including from about 15% to about 50% of a polyethylene glycol component having an average molecular weight of about 200-2000, said polyacrylate groups being provided by condensation of hydroxy groups in said polyester with N-methylol acrylamide.
References Cited (Backward Citations)
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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) | 1982-01-08 | 1982-07-10 | 1983-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-08 | 1986-07-10 | 1987-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-08 | 1990-07-10 | 1991-01-09 | $7700.00 | Window Closed / Lapsed |