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:
Nov. 27, 2012
Filed:
Feb. 17, 2006
Tetsuo Masubuchi, Tokyo, JP;
Eizaburou Ueno, Tokyo, JP;
Yasuyuki Yoshioka, Tokyo, JP;
Yasuyuki Tsukimori, Tokyo, JP;
Tetsuo Masubuchi, Tokyo, JP;
Eizaburou Ueno, Tokyo, JP;
Yasuyuki Yoshioka, Tokyo, JP;
Yasuyuki Tsukimori, Tokyo, JP;
Asahi Kasei Chemicals Corporation, Tokyo, JP;
Abstract
A polycarbonate diol which is useful as a raw material compound for producing a polycarbonate-based polyurethane having a sufficient mechanical strength and excellent in a balance of physical properties such as oil resistance, hydrolysis resistance, and weather resistance and which is amorphous. The polycarbonate diol includes repeating units of the below-shown formula (A) and the below-shown formula (B), wherein both terminal groups are hydroxyl groups, the ratio of the below-shown formula (A) to the below-shown formula (B) is 99:1 to 1:99 by mol, and number-average molecular weight is 300 to 10,000.