[Non-photoinitialio] non-photocatalyzed dipentaerythritol polyacrylate based coating compositions exhibiting high abrasion resistance
First Claim
1. A composition curable by actinic radiation to form an abrasion resistant product comprising a dipentaerythritol-based polyacrylate, a cellulose ester comprising the reaction product of cellulose with at least one organic carboxylic acid having from about 2 to about 4 carbon atoms or a vinyl chloride-vinyl acetate containing polymer, wherein said composition contains no photoinitiator.
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Abstract
Actinic radiation curable coating compositions are provided requiring no photoinitiator or photocatalyst which are applicable to many substrates comprising a dipentaerythritol-based polyacrylate such as dipentaerythritol pentaacrylate, a cellulose ester such as cellulose acetate butyrate or a vinyl chloride-vinyl acetate containing copolymer. The compounds are preferably applied to the substrate by spraying a solution of the composition in one or more solvents selected from the group consisting of lower alcohols and esters, ketones having from 3 to 7 carbon atoms and lower alkyl Cellosolves, and removing the solvents. Roller gravure coatings may also be employed.
Upon curing in air the compositions form extremely high abrasion resistant coatings on the substrate and are also characterized by being scratch resistant and resistant to attack by chemical and organic solvents and are stress crack resistant.
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33 Claims
- 1. A composition curable by actinic radiation to form an abrasion resistant product comprising a dipentaerythritol-based polyacrylate, a cellulose ester comprising the reaction product of cellulose with at least one organic carboxylic acid having from about 2 to about 4 carbon atoms or a vinyl chloride-vinyl acetate containing polymer, wherein said composition contains no photoinitiator.
- 9. A composition curable by actinic radiation to form an abrasion resistant product comprising dipentaerythritol pentaacrylate, a cellulose acetate butyrate containing on the average from about 15% to 50% butyryl groups, from about 1% to 30% acetyl groups and from about 1% to 5% hydroxyl groups or a partially hydrolyzed vinyl chloride-vinyl acetate copolymer containing from about 50% to 95% combined vinyl chloride monomer from about 2% to about 35% combined vinyl acetate monomer and from about 3% to about 15% combined vinyl alcohol monomer, wherein the weight ratio of said pentaerythritol to said butyrate or copolymer is from about 6 to 1 to about 100 to 1, and wherein said composition contains no photoinitiator.
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24. A method of providing an abrasion resistant coating on a substrate comprising:
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(a) forming a composition curable by actinic radiation comprising a dipentaerythritol-based polyacrylate, a cellulose ester comprising the reaction product of cellulose with at least one organic carboxylic acid having from about 2 to about 4 carbon atoms or a vinyl chloride-vinyl acetate containing copolymer wherein said composition contains no photoinitiator; (b) applying said composition to said substrate; and (c) irradiating said composition with actinic radiation to effect curing thereof. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33)
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Specification