Polymers of aspartic acid with sequestering activity process for

Details Polymers of aspartic acid with sequestering activity process for Polymers of aspartic acid with sequestering activity process for

1996-03-22

1999-08-10

Shippen, Michael L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acids and salts thereof

C07C22900

Patent

active

059361212

ABSTRACT:
An oligomer of an aspartic acid is provided having repeating monomeric units of aspartic acid of the formula: ##STR1## and by a first chain unit having formula: ##STR2## and a chain stopper unit A which is: ##STR3## wherein X is an alkali metal, R represents H or an alkyl containing from 1 to 4 carbon atoms and R.sub.1 is H or the group --COOX.

REFERENCES:
patent: 4839461 (1989-06-01), Boehmke
patent: 5219952 (1993-06-01), Koskan

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