Processing

Please wait...

Settings

Settings

1. WO1996005241 - METHOD FOR PRODUCING POLYASPARTIC ACID

Publication Number WO/1996/005241
Publication Date 22.02.1996
International Application No. PCT/EP1995/003003
International Filing Date 28.07.1995
Chapter 2 Demand Filed 15.01.1996
IPC
C02F 5/12 2006.01
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
5Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
08Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
10using organic substances
12containing nitrogen
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
C11D 3/37 2006.01
CCHEMISTRY; METALLURGY
11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
3Other compounding ingredients of detergent compositions covered in group C11D1/101
16Organic compounds
37Polymers
CPC
C02F 5/12
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
5Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
08Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
10using organic substances
12containing nitrogen
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
C11D 3/3719
CCHEMISTRY; METALLURGY
11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
DDETERGENT COMPOSITIONS
3Other compounding ingredients of detergent compositions covered in group C11D1/00
16Organic compounds
37Polymers
3703Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
3719Polyamides; Polyimides
Applicants
  • BASF AKTIENGESELLSCHAFT [DE/DE]; D-67056 Ludwigshafen, DE (AllExceptUS)
  • KRONER, Matthias [DE/DE]; DE (UsOnly)
  • SCHORNICK, Gunnar [DE/DE]; DE (UsOnly)
  • FEINDT, Hans-Jacob [DE/DE]; DE (UsOnly)
  • MEYER, Thomas [DE/DE]; DE (UsOnly)
  • LUDWIG, Alfons [DE/DE]; DE (UsOnly)
  • METZMANN, Udo [DE/DE]; DE (UsOnly)
Inventors
  • KRONER, Matthias; DE
  • SCHORNICK, Gunnar; DE
  • FEINDT, Hans-Jacob; DE
  • MEYER, Thomas; DE
  • LUDWIG, Alfons; DE
  • METZMANN, Udo; DE
Common Representative
  • BASF AKTIENGESELLSCHAFT; D-67056 Ludwigshafen, DE
Priority Data
P 44 28 639.212.08.1994DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) VERFAHREN ZUR HERSTELLUNG VON POLYASPARAGINSÄURE
(EN) METHOD FOR PRODUCING POLYASPARTIC ACID
(FR) PROCEDE DE FABRICATION D'ACIDE POLYASPARTIQUE
Abstract
(DE)
Verfahren zur Herstellung von Polyasparaginsäure durch Polykondensation von feinteiliger Asparaginsäure bei Temperaturen oberhalb von 150 °C in Gegenwart von sauren Katalysatoren, wobei man die sauren Katalysatoren erst in der Reaktionszone, in der die Polykondensation abläuft, mit der feinteiligen Asparaginsäure in Kontakt bringt.
(EN)
Disclosed is a method for producing polyaspartic acid by means of condensation polymerization of finely divided aspartic acid at temperatures above 150 °C in the presence of acid catalysts, the acid catalysts being first brought into contact with the finely divided aspartic acid in the reaction zone in which the condensation polymerization takes place.
(FR)
L'invention concerne un procédé de fabrication d'acide polyaspartique par polycondensation d'acide aspartique en fines particules, à des températures supérieures à 150 °C, en présence de catalyseurs acides. Ce procédé consiste à mettre en contact les catalyseurs acides avec l'acide aspartique en fines particules, en premier lieu dans la zone de réaction où a lieu la polycondensation.
Latest bibliographic data on file with the International Bureau