US Patent 11299621 Anti-blush and chemical resistant polyester film
Patent 11299621 was granted and assigned to Toray Plastics (America), Inc. on April, 2022 by the United States Patent and Trademark Office.
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Patent Inventor Names
Jan Moritz0
Robert Ervolino0
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Patent Citations
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Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
112996210
Date of Patent
April 12, 2022
0Patent Application Number
162231440
Date Filed
December 18, 2018
0Patent Citations
Patent Primary Examiner
Edits on 18 May, 2022
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US Patent 11299621 Anti-blush and chemical resistant polyester film
Article
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 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 substrate sheet and exposed to steam at a temperature of 260° F. for 90 minutes.
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Is a
Patent applicant
Current assignee
Patent jurisdiction
Patent number
11299621
Date of patent
April 12, 2022
Patent application number
16223144
Date Filed
December 18, 2018
Patent primary examiner
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