Process for the manufacture of anhydro polyamino acids and polya

Details Process for the manufacture of anhydro polyamino acids and polya Process for the manufacture of anhydro polyamino acids and polya

1990-07-03

1991-10-15

Anderson, Harold D.

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

Synthetic resins

From carboxylic acid or derivative thereof

525419, 525420, 528499, C08G 6910

Patent

active

050575970

ABSTRACT:
A process for the manufacture of polyamino acids, particularly polyaspartic acid. A solid, particulate, amino acid is fluidized by agitation in a nitrogen atmosphere and heated to a temperature of at least 180.degree. C. and maintained at that temperature for a sufficient amount of time to polymerize the amino acid and to drive off water from the heated bed. A degree of agitation sufficient to substantially fluidize the particles is provided and a particle size of no more than 150 microns is maintained throughout the process. The resultant anhydropolyamino acid is then hydrolyzed to a polyamino acid.

REFERENCES:
patent: 3052655 (1962-09-01), Fox et al.

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