Chemistry: natural resins or derivatives; peptides or proteins; – Proteins – i.e. – more than 100 amino acid residues – Scleroproteins – e.g. – fibroin – elastin – silk – etc.
Patent
1988-05-16
1990-10-16
Schain, Howard E.
Chemistry: natural resins or derivatives; peptides or proteins;
Proteins, i.e., more than 100 amino acid residues
Scleroproteins, e.g., fibroin, elastin, silk, etc.
435 681, 530407, 514 21, A61K 3712, A61K 9107, C07K 1520
Patent
active
049636561
ABSTRACT:
Emulsified compositions comprising an elastin hydrolyzate having a molecular weight not lower than 200,000 (preferably in the range from 1,000,000 to 2,000,000) maintain a stable emulsion state without having to use any other surfactants, and cause sufficient retention of water and moisture on the human skin without having to use any other humectants when employed as cosmetics or external preparations for the skin.
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patent: 4179333 (1979-12-01), Braeumer et al.
patent: 4363760 (1982-12-01), Cioca
patent: 4419288 (1983-12-01), Cioca
patent: 4659740 (1987-04-01), Lisher
Chem. Abstr. 172434K, vol. 102 (1985), Pola.
Analytical Biochemistry 64, 249-254 (1975) Sandberg et al.
Biochemical and Biophysical Research Communications, 72, No. 4 (1976), Foster et al.
Sansho Seiyaku Co., Ltd.
Schain Howard E.
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