Organosilicon-treated pigment, process for production thereof, a

Details Organosilicon-treated pigment, process for production thereof, a Organosilicon-treated pigment, process for production thereof, a

1994-01-13

1995-10-17

Bell, Mark L.

Compositions: coating or plastic

Materials or ingredients

Pigment, filler, or aggregate compositions, e.g., stone,...

10628711, 10628712, 10628713, 106465, 106493, 424 69, 424 7803, 428405, 428447, C04B 1404, A61K 700

Patent

active

054586810

ABSTRACT:
A pigment or extender pigment treated with a linear reactive alkylpolysiloxane having in the molecule amino groups, imino groups, halogen atoms, hydroxyl groups, or alkoxyl groups, which is oriented and adsorbed to the surface of the pigment or extender pigment by heat treatment; a process for producing the treated pigment; and a cosmetic made with the treated pigment. The alkylpolysiloxane has a degree of polymerization from 25 to 100 and a Mw/Mn ratio from 1.0 to 1.3. The organosilicon-treated pigment, characterized by silicone firmly adsorbed to its surface, freedom from residual hydrogen, very smooth feel, good adhesion to the skin, and ability to permit color pigment of fine particle size to spread well, is particularly suitable for use in cosmetics such as powder foundation, liquid foundation, rouge, and eye shadow.

REFERENCES:
patent: 3377311 (1968-04-01), Roch
patent: 4891392 (1990-01-01), Abe et al.
patent: 5001183 (1991-03-01), Sands et al.
patent: 5013585 (1991-05-01), Shimizu et al.
patent: 5118496 (1992-06-01), Herstein
Derwent abstract 87-26316/04 of JP 61-283637 to Hikawa, Dec. 1986.
JAPIO abstract 86-283637 of JP 61-283637 (Hikawa), Dec. 1986.

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