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1. WO1996004330 - PROCESS FOR PREPARING ASPARTIC ACID POLYCONDENSATES WITH IMPROVED BIOLOGICAL DEGRADABILITY AND THEIR USE

Publication Number WO/1996/004330
Publication Date 15.02.1996
International Application No. PCT/EP1995/002892
International Filing Date 21.07.1995
Chapter 2 Demand Filed 09.11.1995
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 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 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)
  • BAUR, Richard [DE/DE]; DE (UsOnly)
  • POTTHOFF-KARL, Birgit [DE/DE]; DE (UsOnly)
Inventors
  • KRONER, Matthias; DE
  • SCHORNICK, Gunnar; DE
  • BAUR, Richard; DE
  • POTTHOFF-KARL, Birgit; DE
Common Representative
  • BASF AKTIENGESELLSCHAFT; D-67056 Ludwigshafen, DE
Priority Data
P 44 27 287.102.08.1994DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) VERFAHREN ZUR HERSTELLUNG VON POLYKONDENSATEN DER ASPARAGINSÄURE MIT VERBESSERTER BIOLOGISCHER ABBAUBARKEIT UND IHRE VERWENDUNG
(EN) PROCESS FOR PREPARING ASPARTIC ACID POLYCONDENSATES WITH IMPROVED BIOLOGICAL DEGRADABILITY AND THEIR USE
(FR) PROCEDE DE PREPARATION DE POLYCONDENSES D'ACIDE ASPARTIQUE A BIODEGRADABILITE AMELIOREE ET LEUR UTILISATION
Abstract
(DE)
Verfahren zur Herstellung von Polykondensaten der Asparaginsäure mit verbesserter biologischer Abbaubarkeit durch thermische Polykondensation von feinteiliger Asparaginsäure in fester Phase bei Temperaturen von 180 bis 250 °C in einem solchen Ausmaß, daß bis zu maximal 70 Gew.-% der theoretisch möglichen Wassermenge, die bei der Polykondensation entsteht, aus dem Reaktionsgemisch entfernt wird, und Verwendung der erhältlichen Polykondensate als Zusatz zu Wasch- und Reinigungsmitteln und als Scaleinhibitor.
(EN)
A process is disclosed for preparing aspartic acid polycondensates with improved biological degradability by thermal polycondensation of finely powdered aspartic acid in solid phase, at temperatures from 180 to 250 °C, until maximum 70 % by weight of the theoretically possible amount of water produced during polycondensation are removed from the reaction mixture. Also disclosed is the use of the thus produced polycondensates as additives for washing and cleaning agents and as scale inhibitors.
(FR)
Un procédé permet de préparer des polycondensés d'acide aspartique à biodégradabilité améliorée par polycondensation thermique d'acide aspartique finement pulvérisé en phase solide, à des températures comprises entre 180 et 250 °C, jusqu'à ce qu'au maximum 70 % en poids de la quantité d'eau théoriquement possible produite pendant la polycondensation aient été enlevés du mélange de réaction. L'invention concerne également l'utilisation des polycondensés ainsi obtenus comme additifs de produits de lavage et de nettoyage et comme agents anti-incrustation.
Also published as
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