Process for covering silicas with wax

Details Process for covering silicas with wax Process for covering silicas with wax

2005-07-26

2005-07-26

Cain, Edward J. (Department: 1714)

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C523S210000, C523S212000, C524S492000, C106S482000, C106S490000, C106S491000

Reexamination Certificate

active

06921781

ABSTRACT:
The present invention provides a process, which includes:coating at least a portion of a surface of at least one silica particle with at least one wax, wherein the coating is carried out in at least one gas at a temperature above the melting point of the wax and below the decomposition temperature of the wax, to obtain at least one wax-coated silica particle. Other embodiments of the present invention provides processes for impregnating the silica particle with wax and uses of the wax-coated or wax-impregnated particles.

REFERENCES:
patent: 3816154 (1974-06-01), Baldyga et al.
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patent: 0 922 671 (1999-06-01), None
patent: 0 922 691 (1999-06-01), None
patent: WO 97/08250 (1997-03-01), None
patent: WO 01/04217 (2001-01-01), None

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