POLY(PHENYLENE ETHER) RESIN MODIFIED WITH SILICONE RUBBER POWDER

A free-flowing silicone rubber powder, having an average particle size of 1 to 1000 microns and prepared by mixing a polydiorganosiloxane with a silica filler, is uniformly dispersed in a poly(phenylene ether) resin using conventional equipment, such as a single screw or, preferably, a twin screw ex...

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Bibliographic Details
Main Authors ROMENESKO, DAVID J, MULLAN, STEVEN P
Format Patent
LanguageEnglish
French
Published 24.06.2003
Edition5
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Summary:A free-flowing silicone rubber powder, having an average particle size of 1 to 1000 microns and prepared by mixing a polydiorganosiloxane with a silica filler, is uniformly dispersed in a poly(phenylene ether) resin using conventional equipment, such as a single screw or, preferably, a twin screw extruder. When employed at relatively low concentrations, such as about 0.2 to 3 parts by weight of powder per 100 parts by weight of resin, a significant improvement in the processability of the resin is obtained, while modification at higher levels, such as 5 to 20 parts by weight of powder per 100 parts by weight of the resin, results in a resin composition having greatly augmented impact resistance.
Bibliography:Application Number: CA19922083014