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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 10208175 B1

PDFFull Text
Date of Patent:
Feb. 19, 2019

Filed:

Oct. 23, 2014

Flame-retardant biaxially oriented polyester film, and flame-retardant polyester film laminate comprising the same and flexible circuit board

Applicant:

Teijin Dupont Films Japan Limited, Tokyo, JP;

Inventors:

Yumiko Nakamura, Gifu, JP;

Naomi Mizuno, Gifu, JP;

Taro Oya, Gifu, JP;

Assignee:

Teijin DuPont Films Japan Limited, Tokyo, JP;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

Vivian Chen

Int. Cl.
CPC ...
B32B 3/00 (2006.01); B32B 15/08 (2006.01); B32B 15/09 (2006.01); B32B 15/20 (2006.01); B32B 27/18 (2006.01); B32B 27/36 (2006.01); C08L 67/02 (2006.01); C08K 3/016 (2018.01); C08K 5/49 (2006.01); C08K 5/51 (2006.01); C08K 5/53 (2006.01); C08K 5/5313 (2006.01); H05K 1/03 (2006.01); H05K 1/09 (2006.01); C08J 5/18 (2006.01); B32B 27/06 (2006.01); B32B 27/20 (2006.01); H05K 1/02 (2006.01); C08L 67/03 (2006.01);
U.S. Cl.
CPC ...
C08J 5/18 (2013.01); B32B 15/09 (2013.01); B32B 27/06 (2013.01); B32B 27/20 (2013.01); B32B 27/36 (2013.01); C08K 5/5313 (2013.01); H05K 1/028 (2013.01); H05K 1/0373 (2013.01); B32B 3/00 (2013.01); B32B 15/08 (2013.01); B32B 15/20 (2013.01); B32B 27/18 (2013.01); B32B 2250/02 (2013.01); B32B 2307/202 (2013.01); B32B 2307/3065 (2013.01); B32B 2307/518 (2013.01); B32B 2307/538 (2013.01); B32B 2307/54 (2013.01); B32B 2367/00 (2013.01); B32B 2457/08 (2013.01); B32B 2457/12 (2013.01); C08J 2367/02 (2013.01); C08K 3/016 (2018.01); C08K 5/49 (2013.01); C08K 5/51 (2013.01); C08K 5/53 (2013.01); C08L 67/02 (2013.01); C08L 67/03 (2013.01); H05K 1/03 (2013.01); H05K 1/0326 (2013.01); H05K 1/0353 (2013.01); H05K 1/0393 (2013.01); H05K 1/09 (2013.01); H05K 2201/012 (2013.01); H05K 2201/0145 (2013.01); H05K 2201/0209 (2013.01); Y10T 428/24355 (2015.01); Y10T 428/25 (2015.01); Y10T 428/31681 (2015.04); Y10T 428/31786 (2015.04);
Abstract

A flame-retardant biaxially oriented polyester film is obtained by imparting flame retardancy to a polyester film itself using a phosphorus flame retardant, a flame-retardant polyester film laminate is formed from the same, and a flexible circuit board is provided. The present invention is obtained from a flame-retardant biaxially oriented polyester film which contains, based on the weight of the polyester film, 70 to 99.5% by weight of polyethylene terephthalate or polyethylene naphthalate, and 0.5 to 30% by weight of flame retardant particles having an average particle diameter of 0.5 to 3.0 μm and being represented by a specific phosphinate or diphosphinate, wherein the number of coarse particles having a maximum length of 10 μm or more contained in the polyester film is 10/mor less.

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