Anti-fogging coating composition, product coated with said composition and method for preparation of said product
First Claim
1. A product having anti-fogging and scratch-resistance characteristics, comprising a support and at least one anti-fogging layer, wherein the layer is formed from a composition consisting essentially of components (A), (B), (C) and (D), on the basis of components (A) and (B) totaling 100%, by weight:
- (A) from 40 to 60by weight of at least one acrylic or methacrylic acid monomer,(B) from 60 to 40% by weight of at least one acrylic or methacrylic acid ester monomer of the formula ##STR2## wherein R is H or CH3 and R'"'"' is a C1-4 alkyl, (C) from 1 to 15% by weight, based on the total weight of monomers (A) and (B), of a crosslinking agent, and(D) from 0.1 to 5% by weight, based on the total weight of monomers (A) and (B), of a polymerization initiator using the action of ultraviolet radiation, said layer being crosslinked by exposure to ultraviolet radiation.
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Abstract
An anti-fogging coating comprises from 40 to 80% by weight of at least one acrylic or methacrylic acid monomer, from 20 to 60% by weight of at least one short chain acrylic or methacrylic acid ester monomer and, in relation to the total weight of the preceding monomers, from 1 to 15% of a crosslinking agent and from 0.1 to 5% of a polymerization initiator compound using the action of ultraviolet radiation. Transparent products formed from a glass or poly(methyl methacrylate) support and a layer of the preceding composition, polymerized and crosslinked by the action of ultraviolet radiation, exhibit good anti-fogging and mechanical resistance properties.
19 Citations
10 Claims
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1. A product having anti-fogging and scratch-resistance characteristics, comprising a support and at least one anti-fogging layer, wherein the layer is formed from a composition consisting essentially of components (A), (B), (C) and (D), on the basis of components (A) and (B) totaling 100%, by weight:
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(A) from 40 to 60by weight of at least one acrylic or methacrylic acid monomer, (B) from 60 to 40% by weight of at least one acrylic or methacrylic acid ester monomer of the formula ##STR2## wherein R is H or CH3 and R'"'"' is a C1-4 alkyl, (C) from 1 to 15% by weight, based on the total weight of monomers (A) and (B), of a crosslinking agent, and (D) from 0.1 to 5% by weight, based on the total weight of monomers (A) and (B), of a polymerization initiator using the action of ultraviolet radiation, said layer being crosslinked by exposure to ultraviolet radiation. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for manufacturing a product having anti-fogging and good mechanical resistance properties comprising:
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1) cleaning a surface or surfaces, of a support to be coated, in order to render them wettable, 2) applying on said cleaned surfaces of the support a composition consisting essentially of components (A), (B), (C) and (D), on the basis of components (A) and totaling 100%, by weight; (A) from 40 to 60% by weight of at least one acrylic or methacrylic acid monomer, (B) from 60 to 40% by weight of at least one acrylic or methacrylic acid ester monomer of the formula ##STR3## wherein R is H or CH3 and R'"'"' is a C1-4 alkyl, (C) from 1 to 15% by weight, based on the total weight of monomers (A) and (B), of a crosslinking agent, and (D) from 0.1 to 5% by weight, based on the total weight of monomers (A) and (B), of a polymerization initiator using the action of ultraviolet radiation, thereby obtaining a homogeneous layer, 3) exposing said coated surfaces to ultraviolet radiation in order to polymerize and crosslink the homogeneous layer. - View Dependent Claims (9, 10)
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Specification