Acrylate, silicone, styrene, urethane copolymer coatings for natural and synthetic rubber articles
AssigneeAvery Dennison Corporation
InventorIvan S. Lee
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Abstract
Rubber articles are coated with a powder-free copolymer coating to provide improved mold release characteristics, improved donning characteristics, and improved tactile feel. The copolymer is formed by the polymerization of a low surface energy monomer, an alkyl acrylate, a hard monomer and a urethane oligomer. The copolymers are preferably formed by a sequential polymerization process.
Claims12
A copolymer composition formed for use as a coating for rubber articles, formed of a mixture of monomers comprising:
- at least one low surface energy monomer selected from the group consisting of copolymerizable silicone oligomers, fluorocarbons, and fatty acid esters, and having a functionality selected from the group consisting of vinyl, acrylic, and methacrylic functionalities;
- at least one alkyl acrylate having 1 to about 10 carbon atoms in the alkyl group;
- at least one urethane oligomer;
- and
- at least one hard monomer.
In a copolymer composition formed for use as a coating for rubber articles, prepared by copolymerization of a mixture of monomers including, on a percent by weight basis based on the weight of all monomers, about 0.7 to 20% of at least one low surface energy monomer, about 30 to 80% of at least one alkyl acrylate having one to ten carbon atoms in the alkyl group, and up to about 40% of at least one hard monomer, the improvement comprising a positive amount up to about 10% by weight of at least one urethane oligomer in the mixture of monomers.
Dependencies are inferred from the claim text.