Methods of synthesis of polysuccinimide, copolymers of polysuccinimide and derivatives thereof
AssigneeFolia, Inc.
InventorsGraham Swift, George H. Redlich
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Abstract
Disclosed are methods of synthesis of copoly(succinimide-aspartate), copolymers and derivatives thereof, prepared in a thermal or supercritical fluid method. Also disclosed are methods of isolating, compounding, stabilizing and processing the copoly(succinimide-aspartate), and its derivatives.
Claims43
A method for preparing a copolymer containing succinimide moieties, which comprises, polymerizing aspartic acid in the presence of an end-capping initiator and further comprising phosphoric acid, polyphosphoric acid or a mixture thereof, in a catalytic amount not to exceed 10% by weight based on the total weight of aspartic acid and the end-capping initiator, to form the copolymer.
A method for preparing a copolymer of L-aspartic acid, which comprises, polymerizing aspartic acid in the presence of an end-capping initiator and a catalyst to form the copolymer of L-aspartic acid;
- wherein said catalyst is selected from the group consisting of a Lewis acid and an organometallic catalyst.
Dependencies are inferred from the claim text.