Isolation and improvement of impact modifier polymer powders

Details Isolation and improvement of impact modifier polymer powders Isolation and improvement of impact modifier polymer powders

1978-12-05

1981-07-14

Griffin, Ronald W.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

106308F, 260 23XA, 260 23S, 260 4214, 260 4244, 260 4249, C08K 904, C08L 902, C08L 906

Patent

active

042785766

ABSTRACT:
Impact modifier polymer powders are isolated by a process comprising introducing about 0.5 to 50% by weight of stearate coated calcium carbonate having an average particle size of about 0.04 to 1 micron based on polymer and stearate coated calcium carbonate mixture. The resultant mixture has improved anti-compaction properties as well as powder flow. Blends of impact modifier and thermoplastic matrix polymer are also unexpectedly improved. Impact modifier with higher than normal rubber levels can be isolated.

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patent: 3985704 (1976-10-01), Jones et al.
patent: 3996173 (1976-12-01), Heichele et al.
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