Compatibilized fluoroplastic blends

Details Compatibilized fluoroplastic blends Compatibilized fluoroplastic blends

1996-06-10

1998-04-21

Buttner, David

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525199, 522109, 522156, C08L 2712, C08L 2716, C08L 2718

Patent

active

057418551

ABSTRACT:
A composition comprises a blend of (a) a first crystalline fluoroplastic which is an ethylene-tetrafluoroethylene copolymer, in an amount between 30 and 70 weight %; (b) a second crystalline fluoroplastic which is a terpolymer of tetrafluoroethylene, hexafluoropropylene, and vinylidene fluoride, in an amount between 30 and 65 weight %; and (c) a fluorinated thermoplastic elastomer which is a block copolymer having at least one elastomeric segment comprising tetrafluoroethylene, vinylidene fluoride, and hexafluoropropylene repeat units in a mole ratio 45-90:5-50:0-35 and at least one nonelastomeric segment comprising tetrafluoroethylene and ethylene repeat units, in an amount between 5 and 25 weight %. The fluorinated thermoplastic elastomer acts as a compatibilizer for the two fluoroplastics. The composition exhibits improved flexibility, tensile strength, and/or elongation.

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