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. 11, 2012
Filed:
Mar. 11, 2010
Shohei Tagami, Annaka, JP;
Takanobu Takeda, Joetsu, JP;
Michihiro Sugo, Annaka, JP;
Hideto Kato, Annaka, JP;
Shohei Tagami, Annaka, JP;
Takanobu Takeda, Joetsu, JP;
Michihiro Sugo, Annaka, JP;
Hideto Kato, Annaka, JP;
Shin-Etsu Chemical Co., Ltd., Tokyo, JP;
Abstract
A polyimide silicone having in the molecule a phenolic hydroxy group in which a part or all of hydrogen atoms are substituted with an acid labile group is provided. The polyimide silicone comprises the unit represented by the formula (1): wherein X is a tetravalent group at least a part of which is a tetravalent organic group represented by the formula (2): wherein Ris a monovalent hydrocarbon group, Ris a trivalent group, and n is an integer of 1 to 120 on average; and Y is a divalent organic group at least a part of which is a divalent organic group having a phenolic hydroxy group in which a part or all of hydrogen atoms are substituted with an acid labile group represented by the formula (3): wherein Rand Rare a hydrogen atom or an alkyl group, and Ris an alkyl group, an aryl group, or an aralkyl group. Rand R, Rand R, or Rand Rmay be bonded to each other to form a ring together with the carbon atom or the carbon atom and the oxygen atom to which they are bonded with the proviso that the R, R, and Rare independently an alkylene group.