Lillian M Ringsdorf

20020161171, Oct 31, 2002

Feb 6, 2001

09/776897

C. Sikes - Birmingham AL, US
Lillian Ringsdorf - Birmingham AL, US
Graham Swift - Blue Bell PA, US

C08G069/10

528/363000, 528/328000

Described are monomer compositions containing aspartic acid and other comonomers, such as monosodium aspartate, and methods for their production. The monomer compositions can be polymerized, particularly by thermal polymerization, to obtain useful and novel imide-containing polyamino acids, i.e., copolymers containing polymerized aspartate units and succinimide units. The invention is also directed to the resulting polymeric materials, their methods of production, and their uses. Uses of the imide-containing polyamino acids include, for example, dispersants in detergents and cleansers, water-treatment chemicals as anti-scalants and corrosion inhibitors, personal-care additives for softening and moisturizing, and many others.

20070015901, Jan 18, 2007

Jan 9, 2006

11/327346

C. Sikes - Eugene OR, US
Lillian Ringsdorf - Fairhope AL, US
Graham Swift - Birmingham AL, US

C08G 69/10

528328000

Disclosed are copolymers based on aspartic acid or its precursor molecules and methods of their production. The copolymers are water-soluble over a wide range of composition and molecular weight. Their preparation involves conversion of a polysuccinimide to copolymers of defined composition, containing aspartate and succinimide residues and/or residues of asparagine. In particular, the copolymers include water-soluble terpolymers of aspartate, asparagine, and succinimide.