Delaminated transparent talc

Details Delaminated transparent talc Delaminated transparent talc

1995-04-04

1998-12-15

Webman, Edward J.

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Particulate form

424 69, 428402, 514770, 514844, 514951, 106626, A61K 914, A61K 702, A61K 3300, C04B 1430

Patent

active

058493336

ABSTRACT:
A delaminated talc has a plurality of high aspect ratio, smooth surface particles. The aspect ratio of the particles is determined by dividing their extent along an upper surface thereof by their thickness. The upper surface is substantially parallel to the lamellar interface direction and the thickness is measured perpendicularly to the interface direction. The upper, lower and side surfaces of the particles are smooth, lacking acute angularity and staircase effect which give rise to increased coefficient of friction and light scattering. The talc is especially suitable in cosmetic and pharmacologic preparations due to its high degree of transparency, skin adhesiveness, lubricity and spreadability.

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patent: 5352441 (1994-10-01), Mausner
patent: 5356617 (1994-10-01), Schlossman
"Cosmetic Talc" by Ronald W. Greya, et al. reprinted from Drug & Cosmetics Industry, May, 1987.

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