Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1997-02-21
1998-12-29
Marquis, Melvyn I.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525222, C08L 2712
Patent
active
058543520
ABSTRACT:
The extrusion of thermoplastic polyolefin, especially linear low density polyethylene (LLDPE) is improved by the use of a processing additive comprising a blend of a thermoplastic acrylic polymer and a fluorocarbon polymer. In a preferred embodiment, the processing additive is a homogeneous blend of a thermoplastic styrene/methyl methacrylate polymer and a thermoplastic copolymer of vinylidene fluoride and hexafluoropropylene. The polyolefin extrudates produced according to this invention have reduced levels of melt fracture when extruded in conventional polymer extrusion equipment.
REFERENCES:
patent: 3125547 (1964-03-01), Blatz
patent: 4753995 (1988-06-01), Chu et al.
patent: 4963622 (1990-10-01), Heitz
patent: 5314965 (1994-05-01), Kishida et al.
Bohnet Nick Klaus Kurt
Checknita Douglas
Chisholm P. Scott
Goyal Shivendra Kumar
Tikuisis Tony
Aylward D.
Johnson Kenneth H.
Marquis Melvyn I.
Nova Chemical Ltd.
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