Blended fluoropolymer compositions and coatings for flexible substrates

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United States of America Patent

PATENT NO 9090778
APP PUB NO 20130137812A1
SERIAL NO

13748225

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Blended fluoropolymer compositions that, in one exemplary application, may be applied as a coating to a flexible substrate and, optionally, to a flexible substrate that has been previously coated with a primer or basecoat and/or a midcoat. In one embodiment, the composition is a blend of at least one low molecular weight polytetrafluoroethyelene (LPTFE) and at least one melt-processible fluoropolymer (MPF). In another embodiment, the composition includes a fluoropolymer base component including at least one fluoropolymer such as high molecular weight polytetrafluoroethylene (HPTFE), and additionally includes the LPTFE/MPF blended fluoropolymer composition. After being applied to the flexible substrate, optionally over a primer or basecoat and/or midcoat, and then cured, the present compositions form coatings that demonstrate improved abrasion resistance and/or improved release characteristics and/or increased translucency/transparency and/or improved impermeability. The present compositions may also be used to produce films having a high degree of clarity and impermeability. The present compositions in powder form may be melt or paste extruded to form articles with improved impermeability.

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Patent Owner(s)

Patent OwnerAddress
PPG INDUSTRIES OHIO INC3800 WEST 143RD STREET CLEVELAND OH 44111

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Brain, Helen L Merseyside, GB 4 24
Harvey, Leonard W Downingtown, US 23 243

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