Polyoxyethylene-polyoxypropylene vitamin E and process for...

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...

Reexamination Certificate

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Details

C514S844000, C514S847000, C514S886000, C514S937000, C514S941000, C514S946000, C549S407000

Reexamination Certificate

active

07144919

ABSTRACT:
The present invention relates to polyoxyethylene-polyoxypropylene (POE-POP) vitamin E, which is prepared from vitamin E by polyethoxylation and polypropoxylation, and a method for preparing the same. The POE-POP vitamin E has a high surface activity and an excellent safety for the skin, so that the POE-POP vitamin E can be advantageously used in the cosmetic industry, the food industry and the medical industry.

REFERENCES:
patent: 5235073 (1993-08-01), Kim et al.
patent: 5441725 (1995-08-01), Kim et al.
patent: 5869703 (1999-02-01), Kim et al.
patent: 6355811 (2002-03-01), Kim et al.
patent: 6417223 (2002-07-01), Sanders et al.

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