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. 20, 2014
Filed:
Aug. 04, 2010
Eiji Takahashi, Chiba, JP;
Shinji Marumo, Chiba, JP;
Gou Mishima, Chiba, JP;
Nippon Soda Co., Ltd., Tokyo, JP;
Abstract
It is an object of the present invention to provide (1) a copolymer for a cured product that is satisfactory in properties, such as adhesion properties, as a chip stacking adhesive or the like. The present invention is a copolymer comprising repeating units represented by formula (I), formula (II), and formula (III), (wherein R, R, and Reach independently represent a hydrogen atom or a methyl group, Rrepresents an alkyl group or a cycloalkyl group, Rrepresents a hydrogen atom or a Cto Calkyl group, m, n, and k represent a molar ratio of the respective repeating units, m represents a positive number of 0 or more and less than 1, n and k each independently represent a positive number, and satisfy a relation of m+n+k=1), and having a weight-average molecular weight in the range of 50,000 to 200,000.