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:
Mar. 10, 2020
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 starting material for polyurethanes having excellent hydrolysis resistance and heat resistance, especially heat aging resistance. Further provided is polyurethanes and elastomers obtained by using the polyesters, as well as processes for manufacturing the polyesters and processes for manufacturing the polyurethanes. The polyester contains one or more types of repeating unit represented by formula [I] below, wherein 70% or more of a terminal group thereof is hydroxyl group, or 70% or more of a terminal group thereof is carboxyl groups; wherein R, R, Rand Reach independently represent an aliphatic hydrocarbon group containing 1 to 6 carbon atoms, and A represents a divalent group selected from aliphatic groups, alicyclic groups, and aromatic groups.