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:
May. 13, 2014
Filed:
Aug. 04, 2010
Yoshiaki Asanuma, Okayama, JP;
Koichiro Isoue, Okayama, JP;
Yoshiaki Asanuma, Okayama, JP;
Koichiro Isoue, Okayama, JP;
Kuraray Co., Ltd., Okayama, JP;
Abstract
It is an object of the invention to provide a plasticized polyvinyl acetal composition that is suitably used for an intermediate film of a laminated glass and other applications, specifically, the polyvinyl acetal composition being characterized in that in cases when a layer that is composed of the polyvinyl acetal composition and another resin layer such as a resin layer of a polycarbonate, a poly(meth)acrylic acid ester, or a styrene thermoplastic elastomer are laminated, the plasticizer does not migrate from the polyvinyl acetal layer. The present invention relates to a polyvinyl acetal composition including 100 parts by mass of a polyvinyl acetal and 0.5 to 100 parts by mass of an ester plasticizer or ether plasticizer that is amorphous or has a melting point of 30° C. or less, and has a hydroxyl value of 15 to 450 mgKOH/g.