US Patent 7151155 Copolymers of cyclic esters and cyclic formals

Patent 7151155 was granted and assigned to Union Carbide on December, 2006 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Union Carbide

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7151155

Date of Patent

December 19, 2006

Patent Application Number

10344396

Date Filed

April 17, 2001

Patent Primary Examiner

‌

Rabon Sergent

Patent abstract

Disclosed are copolymers of cyclic esters, e.g., caprolactone, and cyclic formals of substituted or unsubstituted diols, e.g., 1,3-dioxepane. The copolymers can provide a low melting temperature rendering them liquids at room temperature. Elastomeric polyurethanes prepared from such copolymers can exhibit a low Tg transition and good resistance to hydrolysis and oxidation. The copolymers are particularly useful for elastomers, coatings, adhesives, inks or binders requiring low temperature flexibility and good resistance to hydrolysis and oxidation.