Use of branched polyesters based on citric acid as additive in washing compositions, cleaners, detergents or a formulation for water treatment
AssigneeBASF SE
InventorsJürgen DETERING, Monika HABERECHT, Anna MÜLLER-CRISTADORO, Heike WEBER
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Abstract
The present invention relates to the use of branched polyesters obtainable by polycondensation of citric acid with at least one polyalcohol, and optionally with polycarboxylic acid component as additive in washing compositions, cleaners, detergents or a formulation for water treatment and to mixtures comprising such branched polyesters. The invention further relates to the use of hydrophobically modified branched polyesters; and to the method for cleaning, washing or water treatment using such branched polyesters.
Claims15
1-14. (canceled)
An additive comprising a branched polyester obtained by polycondensation of
- a. citric acid as component A with
- b. at least one polyalcohol as component B and
- c. optionally a polycarboxylic acid component as component C and optionally reaction with
- d. at least one component D selected from the group consisting of C6-C30 alkyl- or alkenylcarboxylic acids, C6-C30 alkyl or alkenyl alcohols, C6-C30 alkyl- or alkenylamines, and C6-C30 aliphatic isocyanates,
- during the polycondensation or subsequently,
- wherein the additive is used in a washing composition, a cleaner, a detergent or a formulation for water treatment.
A cleaner formulation for machine dishwashing comprising as components
- a) 1 to 20% by weight of at least one branched polyester obtainable by polycondensation of citric acid as component A, at least one polyalcohol as component B, optionally polycarboxylic acid component as component C, and optionally a component D selected from the group consisting of C6-C30 alkyl- or alkenylcarboxylic acids, C6-C30 alkyl or alkenyl alcohols, C6-C30 alkyl- or alkenylamines, and C6-C30 aliphatic isocyanates,
- b) 0 to 50% by weight of complexing agents,
- c) 0 to 70% by weight of phosphates,
- d) 0 to 60% by weight of further builders and cobuilders,
- e) 0.1 to 20% by weight of nonionic surfactants,
- f) 0.1 to 30% by weight of bleaches and optionally bleach activators,
- g) 0 to 8% by weight of enzymes, and
- h) 0 to 50% by weight of one or more further additives,
- wherein the sum of components a) to h) does not exceed 100% by weight.
A formulation for water treatment comprising as components
- a) 1 to 95% by weight of at least one branched polyester obtainable by polycondensation of citric acid (component A) with at least one polyalcohol (component B), optionally a polycarboxylic acid component (component C) and optionally component D,
- b) 0 to 80% by weight of phosphonates,
- c) 0 to 98% by weight of water, and
- d) 0 to 50% by weight of one or more further additives,
- wherein the sum of components a) to d) does not exceed 100% by weight and the sum of components b) and d) is >0.
The cleaner formulation of claim 27, wherein the one or more further additives is an anionic surfactant, a zwitterionic surfactant, a bleach catalyst, an alkali carrier, a polymeric dispersant, a corrosion inhibitor, an antifoam, a dye, a fragrance, a filler, a tablet disintegrant, an organic solvent, a tableting auxiliary, a disintegrant, a thickener, a solubility promoter or water.
The formulation for water treatment according to claim 28, wherein the one or more further additives is a polyphosphate, a zinc salt, a molybdate salt, an organic corrosion inhibitor, a biocide, a complexing agent, a surfactant or an antifoam.
The cleaner formulation for machine dishwashing according to claim 27, consisting of
- a) 1 to 20% by weight of at least one branched polyester obtainable by polycondensation of citric acid as component A, at least one polyalcohol as component B, optionally polycarboxylic acid component as component C, and optionally a component D selected from the group consisting of C6-C30 alkyl- or alkenylcarboxylic acids, C6-C30 alkyl or alkenyl alcohols, C6-C30 alkyl- or alkenylamines, and C6-C30 aliphatic isocyanates,
- b) 0 to 50% by weight of complexing agents,
- c) 0 to 70% by weight of phosphates,
- d) 0 to 60% by weight of further builders and cobuilders,
- e) 0.1 to 20% by weight of nonionic surfactants,
- f) 0.1 to 30% by weight of bleaches and optionally bleach activators,
- g) 0 to 8% by weight of enzymes, and
- h) 0 to 50% by weight of one or more further additives,
- wherein the sum of components a) to h) is 100% by weight.
The formulation for water treatment according to claim 28, consisting of
- a) 1 to 95% by weight of at least one branched polyester obtainable by polycondensation of citric acid (component A) with at least one polyalcohol (component B), optionally a polycarboxylic acid component (component C) and optionally component D,
- b) 0 to 80% by weight of phosphonates,
- c) 0 to 98% by weight of water, and
- d) 0 to 50% by weight of one or more further additives,
- wherein the sum of components a) to d) is 100% by weight and the sum of components b) and d) is >0.
Dependencies are inferred from the claim text.