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. 25, 2006
Filed:
Mar. 05, 2004
Naoki Sadayori, Ibaraki, JP;
Yuji Hotta, Ibaraki, JP;
Naoki Sadayori, Ibaraki, JP;
Yuji Hotta, Ibaraki, JP;
Nitto Denko Corporation, Osaka, JP;
Abstract
A polycarbodiimide copolymer which comprises at least one structural unit selected from rubber residues represented by the following formulae (1) and (2) in a number 'm':and a structural unit represented by the following formula (3) in a number 'n':and which comprises on both termini a terminal structural unit derived from a monoisocyanate, wherein m is an integer of 2 or more, n is an integer of 1 or more, m+n is from 3 to 1,500 and m/(m+n) is from 1/1,500 to ⅓. The polycarbodiimide is capable of keeping the inherent heat resistance and also showing excellent flexibility. Films and molding materials having high heat resistance and flexibility can be obtained.