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:
Oct. 23, 1990
Filed:
Jun. 07, 1989
Yoshiro Onda, Tokyo, JP;
Soji Tanioka, Kanagawa, JP;
Shin-Etsu Chemical Co., Ltd., Tokyo, JP;
Abstract
The invention discloses a novel modified polyvinyl butyral polymer having photocurability and heat-curability containing an ethylenically unsaturated moiety, which is introduced by the reaction of, for example, N-methylol acrylamide with a part of the hydroxyl groups, in addition to the vinyl butyral moiety, vinyl acetate moiety and vinyl alcohol moiety constituting conventional polyvinyl butyral resins. The inventive polymer is useful for various types of adhesives, coating materials, interlayers of laminated shatter-proof glass and the like similarly to unmodified polyvinyl butyral resins but with a possibility of broadened utilizability and absence of the problems due to evaporation of organic solvents.