Abrasive and purge compositions

Details Abrasive and purge compositions Abrasive and purge compositions

1993-12-21

1995-08-22

Le, Hoa Van

Plastic and nonmetallic article shaping or treating: processes

With step of cleaning, polishing, or preconditioning...

134 7, 134 9, 134 221, 134 2211, 134 2219, 252163, 25217423, 25217424, 25217425, B08B 900

Patent

active

054437687

ABSTRACT:
This invention relates to an abrasive composition comprising (a) a major amount of at least one abrasive powder, (b) at least one resin selected from the group consisting of a polymer of a diene, a rosin material, a coumarone-indene resin, and a mixture of two or more thereof, and (c) at least one copolymer of an olefin and an acrylate or a methacrylate. The abrasive composition may additionally include (d) a surface active agent. The abrasive composition may be added to a polymer or resin to form purge compositions. The invention also relates to methods of cleaning processing equipment and preparing the abrasive compositions and purge composition.

REFERENCES:
patent: 4838945 (1989-06-01), Fujii et al.
patent: 5236514 (1993-08-01), Leung et al.
patent: 5238608 (1993-08-01), Obama et al.
Derwent Abstract, DE 4,202,618, Aug. 6, 1992; "Cleaning Compositions for Thermoplastics Processing Machines--Comprising . . . ".

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