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:
Nov. 11, 2003
Filed:
Sep. 28, 2001
The Yokohama Rubber Co., Ltd., Tokyo, JP;
Abstract
A primer composition comprising: (A) 100 parts by weight of a reactive acrylic resin comprising a main chain composed of a copolymer of two types of alkylmethacrylates having different number of carbon atoms and a side chain having a group with a hydroxyl group and at least one aromatic ring; (B) 100 to 500 parts by weight of a silane compound obtained by reaction of an aminosilane having two amino groups with dialkoxyepoxysilane and trialkoxyepoxysilane at a predetermined ratio; (C) 10 to 300 parts by weight of an epoxy resin of bisphenol A type having an epoxy equivalent of 1,000 to 2,000 g/eq.; and (D) 100 to 500 parts by weigh of carbon black is provided. The composition is excellent in storage stability and can retain excellent adhesion during the time from the coating of the primer until the coating of a sealant and further is excellent in weatherability.