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:
Dec. 18, 2018
Filed:
Jul. 02, 2015
Mitsubishi Gas Chemical Company, Inc., Chiyoda-ku, JP;
Takeo Hayashi, Niigata, JP;
Hideyuki Sato, Niigata, JP;
Mitsubishi Gas Chemical Company, Inc., Chiyoda-ku, JP;
Abstract
Provided is a polycarbonates that can be used as starting materials for polyurethanes having excellent weather resistance and heat aging resistance. Provided is polyurethanes and elastomers obtained by using the polycarbonates, as well as processes for manufacturing the polycarbonates and processes for manufacturing the polyurethanes. The polycarbonate contains one or more types of repeating unit represented by formula [I] below, which contains 90% or more of terminal hydroxyl groups; wherein R, R, Rand Reach independently represent an aliphatic hydrocarbon group containing 1 to 6 carbon atoms.