Detersive polyanhydroaspartic acids and biodegradable hydrolysat

Details Detersive polyanhydroaspartic acids and biodegradable hydrolysat Detersive polyanhydroaspartic acids and biodegradable hydrolysat

1994-04-25

1996-07-16

Russel, Jeffrey E.

Chemistry: natural resins or derivatives; peptides or proteins;

Peptides of 3 to 100 amino acid residues

25 or more amino acid residues in defined sequence

528312, 530333, 530343, 510533, 510480, 510476, C07K 102, C07K 112, C08G 6916, C11D 110

Patent

active

055368131

ABSTRACT:
Novel polyanhydroaspartic acids (containing not more than 3% of NH groups of the imide moieties thereof relative to the total amount of CH moieties of the succinimide moieties thereof) and the at least 90%.+-.5% biodegradable hydrolysates thereof (containing not more than 3% of primary amide groups relative to the secondary amide groups of the aspartic moieties thereof) are well suited as detergent (co)builders, the former being prepared by thermally polymerizing aspartic acid in the presence of an effective amount of at least one boron compound having at least one B-OH group, or precursor thereof, and the latter by hydrolyzing the polyanhydroaspartic acid thus obtained.

REFERENCES:
patent: 4363797 (1982-12-01), Jacquet et al.
patent: 4696981 (1987-09-01), Harada et al.
patent: 4868287 (1989-09-01), Sikes et al.
patent: 5057597 (1991-10-01), Koskan
patent: 5266237 (1993-11-01), Freeman et al.
patent: 5292864 (1994-03-01), Wood et al.
patent: 5319145 (1994-06-01), Paik et al.
Materials Research Society Symposium, vol. 292, issued 1993, Wheeler et al, "Large Scale Thermally Synthesized . . . ", pp. 277-283.

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