Use of styrene and maleic anhydride copolymers as dispersing age

Details Use of styrene and maleic anhydride copolymers as dispersing age Use of styrene and maleic anhydride copolymers as dispersing age

1996-12-16

1998-07-28

Wu, David W.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524431, 524433, 524436, 524437, 524444, 524447, 524449, 524451, 524445, 524522, 525207, C08K 326

Patent

active

057864152

ABSTRACT:
The present invention relates to a method of dispersing or treating a mineral filler into a thermoplastic resin; the dispersing agent or agent for treatment of a mineral filler is a styrene-maleic anhydride copolymer, having an weight average molecular weight preferably between 1000 to 3000; the thermoplastic resin is selected from (a) a hydrocarbon homopolymer without an aryl group, (b) a copolymer without an aryl group, and with a molecule comprised of carbon, hydrogen and oxygen in which the content of oxygen atoms does not exceed 22% by weight or (c) a mixture of the above described homopolymer and copolymer; the mineral fillers are basic or have surfaces that have free hydroxyl groups. The present invention relates also to thermoplastic compounds which are highly filled, stable, fluid and homogeneous and which contain mineral agents; further these compositions are useful in the fabrication of plastic products.

REFERENCES:
patent: 3766109 (1973-10-01), Pratt et al.
patent: 4421892 (1983-12-01), Kasahara et al.
patent: 5001182 (1991-03-01), Maruya et al.
patent: 5030662 (1991-07-01), Banerjie
patent: 5321081 (1994-06-01), Chundury et al.
Database WPI, Derwent Publications Ltd., AN 93-232524, JP 5-156128, Jun. 22, 1993.
Database WPI, Derwent Publications, Ltd., AN 84-130921, JP 5-9066434, Apr. 14, 1984.

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