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
1989-12-15
1992-02-11
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.
106125, 106135, 106136, 430621, C09H 700
Patent
active
050876945
ABSTRACT:
The present invention relates to modified gelatin containing polyfluorinated substituents grafted on to the protein chain.
It further relates to the process for the preparation of this modified gelatin, which consists in reacting a polyfluorinated derivative containing a group capable of reacting with the OH or NH.sub.2 groups of the gelatin in aqueous solution.
Application: photographic film preparations.
REFERENCES:
patent: 3133908 (1964-05-01), Klevens
patent: 3149974 (1964-09-01), Claeys et al.
patent: 3186847 (1965-06-01), Willems et al.
patent: 4201586 (1980-05-01), Hori et al.
Dumas Sylviane
Takerkart Georges
Sanofi
Schain Howard E.
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