Silicon dioxide-coated polyolefin resin and process for its production

摘要

The present invention is to establish a process for production of highly durable organic silicon-based coatings with satisfactory adhesive property on polyolefin resins. A polyolefin resin, wherein alter hydrophilic treatment of the surface of the polyolefin resin it is coated with a coating solution containing a silicon compound or its hydrolysate with an organic functional group represented by general formula (1): R<1>nSi(R<2>)4-n (where R<1> is an organic functional group with a methacryloxy group, R<2> is one or a plurality of hydrolyzable groups selected from among alkoxyl, groups acetoxyl groups and chlorine, and n is an integer of up to 3), and then dried to obtain a primary coating, over which a silicon dioxide coating is formed. Alternatively, the primary coating may be obtained by coating and drying a coating solution containing a plurality of different silicon compounds or their hydrolysates from among silicon compounds and their hydrolysates with an organic functional group represented by general formula (2): R<3>nSi(R<2>)4-n (where R<3> is an organic functional group with a functional group selected from among methacryloxy, vinyl, allyl and amino groups, R<2> is one or a plurality of hydrolyzable groups selected from among alkoxyl groups, acetoxyl groups and chlorine, and n is an integer of up to 3).