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1. WO1992014753 - THE MANUFACTURE OF POLYASPARTIC ACIDS

Publication Number WO/1992/014753
Publication Date 03.09.1992
International Application No. PCT/US1992/001389
International Filing Date 21.02.1992
IPC
C08G 69/10 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
69Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
02Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids
08derived from amino carboxylic acids
10Alpha-amino-carboxylic acids
C08G 73/10 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
73Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen or carbon, not provided for in groups C08G12/-C08G71/238
06Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule; Polyhydrazides; Polyamide acids or similar polyimide precursors
10Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
CPC
C08G 69/10
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
69Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
02Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
08derived from amino-carboxylic acids
10Alpha-amino-carboxylic acids
C08G 73/1092
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
73Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
06Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
10Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
1092Polysuccinimides
Applicants
  • DONLAR CORPORATION [US]/[US]
Inventors
  • KOSKAN, Larry, Paul
  • LOW, Kim, C.
  • MEAH, Abdul, Rehman, Y.
  • ATENCIO, Anne, Marie
Agents
  • CUPOLI, Anthony, L.
Priority Data
660,35522.02.1991US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) THE MANUFACTURE OF POLYASPARTIC ACIDS
(FR) PRODUCTION D'ACIDES POLYASPARTIQUES
Abstract
(EN)
Polyaspartic acid having a weight average molecular weight of 1000 to 5000 is produced by hydrolysis of anhydropolyaspartic acid. Anhydropolyaspartic acid is produced by condensation polymerization of L-aspartic acid. Greater than 80 % conversion is achievable utilizing 'temperature vs time' profiles.
(FR)
Acide polyaspartique d'une masse moléculaire moyenne comprise entre 1000 et 5000, produit par hydrolyse d'acide anhydropolyaspartique. L'acide anhydropolyaspartique est produit par polymérisation par condensation d'acide L-aspartique. On peut obtenir plus de 80 % de conversion en utilisant des profils de 'température/temps'.
Also published as
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