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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.:

US 9840590 B1

PDFFull Text
Date of Patent:
Dec. 12, 2017

Filed:

Jun. 17, 2014

Copolyesterimides derived from n,n'-bis-(hydroxyalkyl)-benzophenone-3,3′,4,4′-tetracarboxylic diimide and films made therefrom

Applicants:

Stephen William Sankey, Redcar, GB;

David Turner, Redcar, GB;

Howard Colquhoun, Reading, GB;

Stephen Jones, Reading, GB;

Inventors:

Stephen William Sankey, Redcar, GB;

David Turner, Redcar, GB;

Howard Colquhoun, Reading, GB;

Stephen Jones, Reading, GB;

Assignee:

DUPONT TEIJIN FILMS U.S. LIMITED PARTNERSHIP, Wilmington, DE (US);

Attorney:

RatnerPrestia

Primary Examiner:

Duc Truong

Int. Cl.
CPC ...
C08G 73/16 (2006.01); C08J 5/18 (2006.01); C08G 63/685 (2006.01); C08G 73/10 (2006.01); C08L 79/08 (2006.01); D01F 6/84 (2006.01); C08G 63/88 (2006.01); C08G 73/00 (2006.01);
U.S. Cl.
CPC ...
C08G 73/16 (2013.01); C08G 63/6856 (2013.01); C08G 63/88 (2013.01); C08G 73/1082 (2013.01); C08J 5/18 (2013.01); C08L 79/08 (2013.01); D01F 6/84 (2013.01); C08J 2367/02 (2013.01); C08J 2379/08 (2013.01);
Abstract

A semi-crystalline biaxially oriented film comprising a copolyester which comprises repeating units derived from an aliphatic glycol, an aromatic dicarboxylic acid, and the monomer of formula (I): (I) wherein n=2, 3 or 4, Z is C═O, and wherein comonomer (I) constitutes a proportion of the glycol fraction of the copolyester and is present in an amount of at least about 4 mol % of the glycol fraction of the copolyester.

Find Patent Forward Citations

Quick Actions:

Sankey, Stephen. (2017). Copolyesterimides derived from n,n'-bis-(hydroxyalkyl)-benzophenone-3,3′,4,4′-tetracarboxylic diimide and films made therefrom (U.S. Patent No. 9840590). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9840590

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