Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – Specific organic component
Patent
1999-05-12
2000-07-04
Gupta, Yogendra
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
Specific organic component
510517, C11D 330
Patent
active
060838981
DESCRIPTION:
BRIEF SUMMARY
The invention relates to the use of crosslinked nitrogenous compounds which are soluble or dispersible in water in detergents and cleaners. The invention particularly relates to the use of crosslinked oligo- and polyamines as soil release agents and enzyme stabilizers in detergents and cleaners.
The use of nitrogenous polymers in detergents is known.
DE-A 1-3 1 24 210 describes liquid detergents with additives to prevent dye transfer. The detergent additionally contains nonionic or zwitterionic surfactants in combination with polyethyleneimines, polyamines, polyamineamides or polyacrylamnides, by which transfer of dyes from colored textiles to white or pale-colored textiles on washing together is counteracted. The polyamineamides can be obtained by condensing polybasic acids such as dibasic, saturated, aliphatic C.sub.3-8 -acids and polyamines. The polymers are described as soluble in water but are not identified more exactly.
DE-A-1 922 450 describes detergents and cleaners which contain antiredeposition agents to prevent reabsorption of detached soil on the cleaned surfaces. Polyamides which can be prepared from polyethyleneimines with an average molecular weight of from 300 to 6000 and di- and tricarboxylic acids are used as antiredeposition agents. Products of reactions with diglycolic acid, thiodiglycolic acid, iminodiacetic acid and nitrilotriacetic acid are also mentioned.
DE-A-2 165 900 describes detergents with a content of antiredeposition additives. The product of the reaction of a polyethyleneimine with a molecular weight of from 430 to 10,000 with C.sub.8-18 -alkyl glycidyl ethers, which may additionally be reacted with ethylene oxide, is used as antiredeposition agent.
It is furthermore known to use soil release agents, which are reversibly adsorbed from the wash liquor on the textile or the fibers of the textile during the washing process, in detergents. When a textile treated with such a soil release agent is soiled, in the next wash the adsorbed soil release agent improves detachment of the soil. This soil release effect is thus a reversible antisoil finish on the textile during the washing. Various soil release agents are known, such as polyesters from polyethylene oxides with ethylene glycol and/or propylene glycol and aromatic and/or aliphatic dicarboxylic acids. For example, DE-A-43 44 357 describes a soil release polymer which has ethylene glycol terephthalic groups and polyethylene glycol terephthalic groups.
In addition, modified celluloses, such as methylcellulose, hydroxypropylcellulose or carboxymethylcellulose, have been employed. US 4,138,352 describes the combination of a nonionic surfactant and a hydroxybutylated methylcellulose with low molecular weight as soil release agent.
EP-A1-0 042 187 describes detergent compositions which contain small amounts of substituted polyamines. The polyamines are in this case substituted by a long-chain alkyl or alkenyl radical. They may additionally be substituted by at least two alkylene oxide residues on different nitrogen atoms. The compositions show in particular improved soil release properties.
It is an object of the present invention to provide soil release agents for detergents and cleaners which preferably also act as enzyme stabilizers and have an advantageous property profile.
We have found that this object is achieved by the use of crosslinked nitrogenous compounds which are soluble or dispersible in water and are obtainable by crosslinking of detergents and cleaners.
The NH groups can be present in primary (NH.sub.2) and/or secondary (NH) amino groups.
The nitrogenous compounds according to the invention are preferably used as soil release agents and/or enzyme stabilizers.
The soil release effect presumably derives from the adsorption, described above, of the agent from the wash liquor onto the textile. The soil release effect thus emerges on washing several times. It must be distinguished from the single wash cycle or soil removal effect. The soil removal effect relates to detachment of soil directly on the first wash of a sta
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Boeckh Dieter
Decker Jurgen
Ehle Beate
Lux Jurgen Alfred
Meixner Hubert
BASF - Aktiengesellschaft
Gupta Yogendra
Hardee John R.
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