Process for the preparation of polycondensates of amino acids an

Details Process for the preparation of polycondensates of amino acids an Process for the preparation of polycondensates of amino acids an

1995-09-29

1997-11-18

Nutter, Nathan M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

578398, C08G 6910

Patent

active

056889038

ABSTRACT:
Process for the preparation of polycondensates of amino acids or of the polypeptide hydrolysates thereof, by bulk thermal polycondensation of amino acids in pulverulent medium, in the presence of phosphoric acid, phosphorus pentoxide or polyphosphoric acid (catalyst) which is uniformly distributed in the said pulverulent medium, optionally followed by hydrolysis. The said pulverulent medium may be obtained by empasting the amino acid and the catalyst with water, removal of the water and grinding.
Use of polyimide polycondensates or the polypeptide hydrolysates thereof in detergent compositions.

REFERENCES:
patent: 3927204 (1975-12-01), Neri
patent: 5142062 (1992-08-01), Knebel
patent: 5457176 (1995-10-01), Alder et al.
patent: 5478919 (1995-12-01), Koskan et al.
patent: 5548036 (1996-08-01), Kroner et al.

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