Patent ID: 7008587
Filing Date: 2006-03-07
Classification: C08L,Y10T

Abstract:
1. A method of improving extrusion properties in an extrudate comprising (i) blending a major amount of a first fluoropolymer, wherein the first fluoropolymer comprises a semi-crystalline fluorinated copolymer, and a minor amount of a second fluoropolymer effective to improve extrusion properties in the blend, and (ii) melt processing the blend to form the extrudate, wherein the first fluoropolymer is selected from class: and wherein the second fluoropolymer is selected from class (a); (b); (c); when the first fluoropolymer is selected from (b), the second fluoropolymer is selected from (a), (c), (d), and/or (e); and when the first fluoropolymer is a copolymer selected from (c), the second fluoropolymer is selected from (a), (b), (d), and/or (e), with the proviso that, when the blend comprises one or more copolymers selected from (c), the blend comprises either at least about 80% by weight of copolymers selected from (c) or no more than about 5% by weight of copolymers selected from (c).