Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...
Patent
1988-07-25
1991-01-15
Rollins, John W.
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Having -c-, wherein x is chalcogen, bonded directly to...
424 59, 424 60, 514 58, 514557, 514844, 514845, 514846, 514847, 514937, A61K 3135, A61K 742, A61K 744
Patent
active
049854550
ABSTRACT:
External preparations comprising, as active ingredients, kojic acid or a derivative thereof which also contain an ultraviolet absorber, .beta.-cyclodextrin and ethylenediaminetetraacetic acid and have a controlled pH in the range from 4.0 to 5.0 show little discoloration during storage. In addition, discoloration of the preparation applied to the skin due to ultraviolet rays and other causes is also minimized, thus eliminating the trouble of contaminating clothes and other surrounding objects.
REFERENCES:
patent: 3880875 (1975-04-01), Strobel et al.
patent: 4465629 (1984-08-01), Maughan
patent: 4742066 (1988-05-01), Deckner et al.
patent: 4837019 (1989-06-01), Georgalas et al.
patent: 4847074 (1989-07-01), Hatae et al.
Rollins John W.
Sansho Seiyaku Co., Ltd.
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