Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1997-03-03
1999-09-21
Cain, Edward J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
523205, 523206, 523207, 523208, 523210, C08K 900
Patent
active
059555165
ABSTRACT:
Additives for polymeric compositions are prepared by coating pigment with a dispersant, and thereafter dispersing the dispersant-coated pigment in a liquid nonaqeous polymeric carrier. Preferably, the dispersant-coated pigment is spray-dried. That is, most preferably, an aqueous dispersion of the pigment and dispersant is subjected to a spray-drying operation so as to obtain pigment coated with the dispersant. The dispersant-coated pigment will have an average particle size of about 5 .mu.m or greater, but is capable of breaking apart to average particle sizes of about 1 .mu.m or less when dispersed in a polymeric host material.
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Caswell Donald
Gasperson G. Daniel
Jones Frank R.
McIntosh Stanley A.
Shore Gary W.
BASF Corporation
Cain Edward J.
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