Silicone polyester polymers as delivery systems

Details Silicone polyester polymers as delivery systems Silicone polyester polymers as delivery systems

1992-06-15

1993-05-11

Bleutge, John C.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

528 265, 528 26, 528 29, 530406, 525474, 427387, C08G 6348

Patent

active

052101339

ABSTRACT:
The invention discloses novel series of silicone polyesters which are useful as delivery systems for a variety of hydroxyl containing active such as lanolin, cholesterol, dihydrocholesterol, Vitamin A, Vitamin D-2, Vitamin D-3, Vitamin D-4, Vitamin E, and Panthenol. Compounds of the invention by are prepared by the esterification of (a) a hydroxyl containing silicone compound selected from silanol and dimethicone copolyol (b) a diacid and (c) a hydroxyl functional active selected from lanolin, cholesterol, dihydrocholesterol, Vitamin A, Vitamin D-2, Vitamin D-3, Vitamin D-4, Vitamin E, and Panthenol; and optionally (d) a mono functional fatty acid. The polyesters of the present invention allow for the formulation of personal care products in which the "active" can be formulated into a variety of solvents without the loss of activity.

REFERENCES:
patent: 4725658 (1988-02-01), Thayer et al.
patent: 5051489 (1991-09-01), O'Lenick
patent: 5100956 (1992-03-01), O'Lenick

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