Polyester film for coating iron and film-coated metal plate

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12252610
APP PUB NO 20210371644A1
SERIAL NO

17277170

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Disclosed is a blended polyester thin film, comprising a copolyester and a homopolyester. The thin film is composed of upper, middle, and lower layers. Each of the three layers is a homogeneous mixture of the copolyester and the homopolyester. The copolyester comprises 800-2000 ppm by mass of SiO2 added by means of in-situ polymerization. A dihydric alcohol component in the copolyester comprises ethylene glycol, 1,4-cyclohexanedimethanol, and 1,4-butanediol. The melting point of the copolyester is between 200-240° C. The blended polyester film of the present invention has excellent processability, excellent chemical resistance, such as acid and alkali resistance, and excellent uniformity. A film-coated metal plate prepared from the blended polyester thin film can meet performance requirements of metal containers for food and beverage packaging with complex molding processing and high corrosion resistance.

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Patent Owner(s)

  • BAOSHAN IRON & STEEL CO., LTD.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Hongxing Shanghai, CN 13 40
Dai, Jingge Shanghai, CN 4 0
Xie, Long Shanghai, CN 17 7

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