Use of branched polyesters based on citric acid as additive in washing compositions, cleaners, detergents or a formulation for water treatment

Patent metadata

Field	Value
Publication number	US-2019100716-A1
Application number	US-201816207330-A
Country	US
Kind code	A1
Filing date	Dec 3, 2018
Priority date	Jul 25, 2012
Publication date	Apr 4, 2019
Grant date	—

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.

First claim

1 - 14 . (canceled)

15 . 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.

16 . The additive according to claim 15 , wherein the molar ratio of citric acid to polyalcohol is 5.0:1.0 to 1.0:1.5.

17 . The additive according to claim 15 , wherein component B is ethylene glycol, 1,2-propanediol, 1,3-propanediol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, diethylene glycol, triethylene glycol, dipropylene glycol, tripropylene glycol, polyethylene glycol with an average molecular weight between 200 and 1000 g/mol, glycerol, diglycerol, triglycerol, trimethylolpropane, trimethylolethane, di(trimethylolpropane), 1,2,4-butanetriol, 1,2,6-hexanetriol, pentaerythritol, sucrose, sorbitol, glucaric acid, or polyetherols thereof based on ethylene oxide and/or propylene oxide, or a mixture thereof.

18 . The additive according to claim 15 , wherein component B is diethylene glycol with an average molecular weight between 200 and 1000 g/mol, polyethylene glycol with an average molecular weight between 200 and 1000 g/mol, trimethylolpropane, glycerol, diglycerol, triglycerol, or polyetherols thereof based on ethylene oxide or propylene oxide, or a mixture thereof.

19 . The additive according to claim 15 , wherein component C is malonic acid, succinic acid, glutaric acid, adipic acid, sebacic acid, octadecenylsuccinic anhydride, a 1,2-cyclohexanedicarboxylic acid, a 1,3-cyclohexanedicarboxylic acid, a 1,4-cyclohexanedicarboxylic acid, cis-hexahydrophthalic acid, trans-hexahydrophthalic acid, a mixture of cis-hexahydrophthalic acid and trans-hexahydrophthalic acid, phthalic acid, isophthalic acid, terephthalic acid, anhydrides, monoalkyl esters or dialkyl esters.

20 . The additive according to claim 15 , wherein the branched polyesters have a molecular weight M n of from 400 to 5000 g/mol.

21 . The additive according to claim 15 , wherein the washing composition is a dishwashing composition.

22 . 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.

23 . 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.

24 . 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.

25 . 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.

26 . 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.

27 . 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.

28 . The additive according to claim 15 , wherein component B is one or more polyalcohols selected from the group consisting of polyethylene glycol, optionally alkoxylated trimethylolpropane, triglycerol, and diethylene glycol.

Assignees

• Basf Se

Inventors

• Detering Jürgen
• Haberecht Monika
• Müller-Cristadoro Anna
• Weber Heike

Classifications

• C02F2103/08

  Seawater, e.g. for desalination · CPC title

• C02F1/04

  by distillation or evaporation · CPC title

• C11D3/39

  Organic or inorganic per-compounds · CPC title

• C11D3/3715 Primary

  Polyesters or polycarbonates · CPC title

• C02F1/4693

  electrodialysis · CPC title