Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter
Patent
1993-05-21
1994-08-16
Schofer, Joseph L.
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Particulate matter
526279, B32B 516
Patent
active
053386094
ABSTRACT:
The present invention relates to fractional melt flow rate powders wherein the particles are substantially spherical in shape and range in size from about 10 up to about 200 microns. The invention also relates to a process whereby a dispersible olefin copolymer resin can be converted into a microfine powder with reduced melt index. The process entails dispersing a molten olefin copolymer resin containing silane functionality in a liquid medium in the presence of a nonionic surfactant and catalyst and, after the melt flow rate is reduced to the desired level, cooling the dispersion to below the melt point of the olefin polymer.
REFERENCES:
patent: 3225018 (1965-12-01), Zutty
patent: 3392156 (1968-07-01), Donaldson
patent: 3422049 (1969-01-01), McClain
patent: 3432483 (1969-03-01), Peoples et al.
patent: 3746681 (1973-07-01), McClain
patent: 4983675 (1991-01-01), Ishino et al.
Two abstracts of Japanese Publication 2185549 (Showa Elec. Wire KK.); publication date Jul. 19, 1990; Derwent Publications, Ltd., London, GB.
Heimberg Manfred
Ondrus Daniel J.
Baracka Gerald A.
Heidrich William A.
Quantum Chemical Corporation
Sarofim N.
Schofer Joseph L.
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