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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 11110688 B1

PDFFull Text
Date of Patent:
Sep. 07, 2021

Filed:

Jul. 05, 2018

Anti-blush and chemical resistant polyester film

Applicant:

Toray Plastics (America), Inc., North Kingstown, RI (US);

Inventors:

Jan Moritz, Bristol, RI (US);

Robert Ervolino, Foster, RI (US);

Assignee:

TORAY PLASTICS (AMERICA), INC., North Kingstown, RI (US);

Attorneys:

Dave Law Group LLC

Raj S. Dave

Primary Examiner:

Vivian Chen

Int. Cl.
CPC ...
B32B 15/09 (2006.01); B32B 27/36 (2006.01); C08K 5/00 (2006.01); C08K 5/5333 (2006.01); C08L 67/02 (2006.01); B32B 15/18 (2006.01); B32B 27/20 (2006.01); C08K 5/5317 (2006.01); C08K 5/53 (2006.01); C08K 5/5357 (2006.01); C08L 67/03 (2006.01);
U.S. Cl.
CPC ...
B32B 15/09 (2013.01); B32B 27/36 (2013.01); C08K 5/0041 (2013.01); C08K 5/5333 (2013.01); C08L 67/02 (2013.01); B32B 15/18 (2013.01); B32B 27/20 (2013.01); B32B 2307/30 (2013.01); B32B 2307/40 (2013.01); B32B 2307/402 (2013.01); B32B 2307/4026 (2013.01); B32B 2307/412 (2013.01); B32B 2311/30 (2013.01); B32B 2367/00 (2013.01); B32B 2439/66 (2013.01); C08K 5/53 (2013.01); C08K 5/5317 (2013.01); C08K 5/5357 (2013.01); C08L 67/03 (2013.01); C08L 2203/16 (2013.01); Y10T 428/31681 (2015.04); Y10T 428/31786 (2015.04);
Abstract

Embodiments herein relate to a polymer film comprising an anti-blushing composition in a blend comprising polyethylene terephthalate (PET) and polybutylene terephthalate (PBT); wherein the blend has an intrinsic viscosity above 0.75 and contains at least 50 wt. % of PBT; wherein the anti-blushing composition comprises a phosphorus containing compound but excludes certain phosphorus compounds; and wherein the anti-blushing composition is configured to prevent blushing in the polymer film laminated directly to a metal sheet and exposed to steam at a temperature of 260° F. for 90 minutes.

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