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:
Apr. 07, 2009
Filed:
Mar. 03, 2004
Nobumasa Ootake, Yokohama, JP;
Teruaki Hayashida, Yokohama, JP;
Nobumasa Ootake, Yokohama, JP;
Teruaki Hayashida, Yokohama, JP;
Chisso Corporation, Osaka-shi, JP;
Abstract
The present invention provides such a three-dimensional ladder polymer that has, as a main chain, a silsesquioxane skeleton having a structure of the cage structure of octasilsesquioxane with two broken corners. The polymer of the invention is a polymer obtained by using a silsesquioxane derivative represented by formula (1-0). Reach represents hydrogen, alkyl, cycloalkyl, aryl or arylalkyl, Reach represents chlorine, a group defined as similar to R, or a group having —CN, X independently represents hydrogen, chlorine, a group defined as similar to R, or a group having one of —CH═CH—, —C≡C—, —OH, —COOH, —COO—, 2-oxapropane-1,3-dioyl, oxiranyl, oxiranylene, oxetanyl, oxetanylene, 3,4-epoxycyclohexyl, —SH, —NCO, —NH— and —NH; and at least two of X each is a reactive group.