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:
Oct. 16, 2001
Filed:
Sep. 10, 1999
Raj B. Durairaj, Monroeville, PA (US);
Indspec Chemical Corporation, Pittsburgh, PA (US);
Abstract
Novel diol blends are disclosed. The blends are comprised of an aromatic diol portion derived from dihydric phenol and an aliphatic diol portion in a ratio of aromatic to aliphatic of 5:95 to 95:5. The aromatic portion is the reaction product of a dihydric phenol and one or more alkylene carbonates using a stoichiometric excess of carbonate. Methods for preparing these diol blends are also disclosed, as are methods for using these compounds in the preparation of cast elastomers. Cast elastomers prepared from these blends are also disclosed; the elastomers have physical and mechanical properties that make them appropriate for use in many demanding applications.