The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 23, 1980
Filed:
Aug. 21, 1978
Hiroyuki Kanazawa, Niihama, JP;
Mikio Futagami, Niihama, JP;
Sumitomo Chemical Company, Limited, Osaka, JP;
Abstract
A coating composition useful for improving the surface properties, such as surface hardness and chemical resistance, of plastic products, wooden products, metallic products, or the like, which comprises (A) partially hydrolyzed silicon compounds consisting essentially of copartial hydrolyzates of an organic silicon compound of the formula: R.sub.n Si(OR').sub.4-n wherein n is 1 to 3, R is a hydrocarbon group and R' is an alkyl, and a tetraalkoxysilane, or a mixture of partial hydrolyzates of each organic silicon compound and tetraalkoxysilane, said partial hydrolyzate of the organic silicon compound being contained in a larger ratio to the partial hydrolyzate of the tetraalkoxysilane, (B) an acrylic copolymer and an etherated methylolmelamine, and (C) a solvent. The coating composition can give a transparent and hard coating film having excellent boiling water resistance, heat cycle resistance and weatherability even under severe conditions.