Compositions – Water-softening or purifying or scale-inhibiting agents
Patent
1991-10-29
1993-06-08
Pal, Asok
Compositions
Water-softening or purifying or scale-inhibiting agents
25217424, 252DIG2, 252DIG15, 528296, 528302, C11D 100, C11D 300
Patent
active
052176428
ABSTRACT:
Water-soluble or water-dispersible polyesters obtainable by condensation of tartaric acid or derivatives thereof alone or by condensation of mixtures of tartaric acid or derivatives thereof and citric acid with or without alcohols, water-soluble polyalkylene glycols or water-soluble polyaddition products of alkylene oxides with alcohols, fatty acids, alkylphenols or alkylamines and with or without at least dibasic carboxylic acids are suitable for use as detergent additives.
REFERENCES:
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patent: 3557039 (1971-01-01), McIntyre et al.
patent: 4797223 (1989-01-01), Amick et al.
patent: 5009805 (1991-04-01), Perner et al.
Chemical Abstracts, vol. 98, No. 6, Feb. 7, 1983, Columbus Ohio, US; Abstract No. 36523K, Rabas et al: "Liquid cleaning agent" Seite 107; & CS-B-198461.
Chemical Abstracts, vol. 97, No. 24, Dec. 13, 1982, Columbus, Ohio, US; abstract No. 198736P, Rabas et al: "Condensates of Hydroxycarboxylic Acids with Compounds Containing Hydroxyl or Carboxyl Groups," Seite 12; & CS-B-187709.
Applied Polymer Symposia, Bd. 35, 1979, New York US, Seiten 405-414; M. M. Bitritto et al: "Synthesis and Biodegradation of polymers derived from alfa-hydroxy acids."
Patent Abstracts of Japan, vol. 14, No. 544 4, Dec. 1990 & JP-A-2 232 226 (Taki Chem Co Ltd) 14, Sep. 1990.
Baur Richard
Boeckh Dieter
Hartmann Heinrich
Kud Alexander
Achutamurthy P.
BASF - Aktiengesellschaft
Pal Asok
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