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
1991-07-12
1993-12-28
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.
8 9427, 8 9426, 8 9428, 8 9429, 8 9419R, C07K 1512, C07K 1520
Patent
active
052740781
ABSTRACT:
A collagen powder is obtained by wet-pulverizing a purified animal tissue consisting mainly of collagen in water at a collagen concentration of 1-30% by weight at a water temperature of not more than 37.degree. C. and a pH value of 2-8, tanning treating the pulverized tissue at a pH level of 2-7 with a polyvalent metal tanning agent to obtain a stabilized wet collagen product, dehydrating the wet collagen product at a pH level of 4-8, and then drying and pulverizing the dehydrated product into a powder. This powder can be used as an additive for modifying paints, artificial leathers, molding materials and the like based on synthetic resins such as thermoplastic resins. The materials obtained with this powder have an excellent appearance, feel, and moisture-absorbing and moisture-releasing properties.
REFERENCES:
patent: 4834762 (1989-05-01), Nishihori
patent: 5153067 (1992-10-01), Yoshida
Australian Patent Office Office Action issued on corresponding Australian Patent Application No. 80419/91 dated Nov. 20, 1992.
Wada Tetsuo
Yamaguchi Tetsuhiko
Schain Howard E.
Showa Denko K.K.
Touzeau P. Lynn
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