Crosslinkable ethylene copolymer powders and processes

Details Crosslinkable ethylene copolymer powders and processes Crosslinkable ethylene copolymer powders and processes

1991-11-26

1993-05-11

Schofer, Joseph L.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

526279, 525288, 528481, C08F25502, C08F23008

Patent

active

052099776

ABSTRACT:
The present invention relates to crosslinkable microfine ethylene copolymer powders which are substantially spherical in shape and range in size from about 10 up to about 500 microns and to the process of crosslinking the powders to reduce their melt flow rate. The powders are crosslinked by contacting with water in the presence of a silanol condensation catalyst at temperatures from ambient up to about 110.degree. C. The reduction in melt flow rate is accomplished without substantially changing the powder characteristics, i.e., particle size and particle size distribution.

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patent: 4440908 (1984-04-01), McClain
patent: 4707520 (1987-11-01), Keogh
F. W. Billmeyer, Jr., Text Book of Polymer Science, 3rd Ed., Wiley, New York 1984; pp. 198-203.

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