Stabilizer mixtures for halogen-containing plastics by underwater pelletization

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United States of America Patent

PATENT NO 9303151
APP PUB NO 20130005877A1
SERIAL NO

13583692

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Abstract

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The present invention relates to a process for producing a pelletized stabilizer mixture for halogen-containing plastics, comprising the following steps:

    (a) heating, at from 40 to 100° C. in an extruder or kneader, a mixture comprising (A) at least one lubricant,(B) at least one substance having stabilizer activity, and(C) auxiliaries and additives,  where at least 1% by weight of all of the substances, based on the total amount of the mixture, has a melting point below 100° C.,(b) forcing the material through a pelletizing die,(c) carrying out die-face pelletization under water,(d) transporting the pelletized stabilizer mixture away in a stream of water,(e) extracting the pelletized stabilizer mixture from the water, and(f) drying the pelletized stabilizer mixture.

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Patent Owner(s)

Patent OwnerAddress
IKA INNOVATIVE KUNSTSTOFFAUFBEREITUNG GMBH & CO KG06766 WOLFEN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Reith, Walter Egenhofen, DE 25 81

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