Stock material or miscellaneous articles – Composite – Of polyisocyanurate
Patent
1995-06-01
1996-08-20
Schofer, Joseph L.
Stock material or miscellaneous articles
Composite
Of polyisocyanurate
156182, 1563244, 428500, B32B 2700
Patent
active
055477615
ABSTRACT:
Copolymers of tetrafluoroethylene (TFE) and hexafluoropropylene (HFP) having high HFP content and end-of-melting temperature, T.sub.m (end), as low as 200.degree. C. are disclosed. Exceptional performance as a processing aid in polyolefins results from having T.sub.m (end) of the TFE/HFP copolymer close to the processing temperature of the polyolefin. These TFE/HFP copolymers are soluble in fluorinated cyclic solvents. Copolymer/solvent systems copolymer at significant concentrations in selected solvents are fluid and stable at room temperature.
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Chapman, Jr. George R.
Morgan Richard A.
Stewart Charles W.
Tuminello William H.
Van Alsten John G.
E. I. Du Pont de Nemours and Company
Sarofin N.
Schofer Joseph L.
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