Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Patent
1997-04-03
1999-11-16
Anthony, Joseph D.
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
25218639, 562 2, 540200, 540485, 546243, 546245, 5462784, 5462787, 546290, 546298, 548520, 548521, 548543, C11D 339, C09K 300, C07D22310, C07D20727, C07D21176, C07D40314, C07C40940
Patent
active
059858150
DESCRIPTION:
BRIEF SUMMARY
This application is a 371 of PCT/GB94/02584, filed Nov. 25, 1994.
The present invention relates to new compounds used as bleach activators, compositions containing peroxygen bleach source and said activator compounds, processes in which the activator compound and peroxygen bleach source are reacted to produce a stronger oxidising species and some novel products of such a reaction, its use as an oxidising agent, for instance a bleach or biocide.
It is very well known in the laundry detergent field to use a combination of peroxygen bleach precursor (or peroxygen source) and bleach activator in the same or separate compositions. The bleach activators are usually acyl-donors. During storage of a composition including peroxygen bleach source and bleach activator, the two components are prevented from contacting one another under conditions such that the perhydrolysis reaction would take place.
Percarboxylic acids of various types have been used as bleaching species. Mono- and di- peroxydicarboxylic acids are described in, for instance, U.S. Pat. No. 3,655,738 (diperphthalic acid is described). In U.S. Pat. No. 4,134,850, mono- and poly- peroxy acid derivatives of cyclohexyl di- and multi- carboxylic acid compounds are described. In EP-A-0,027,693 magnesium salts of monoperoxy dicarboxylic aromatic or cycloaliphatic acids are produced and used in detergent compositions. In U.S. Pat. No. 2,813,896 and U.S. Pat. No. 4,259,201 .alpha.,.omega.-long chain aliphatic diperoxoic acids are described as bleaching agents. The third compounds are diperoxy dodecanedioic acid, diperoxy azelaic acid and diperoxy adipic acid. Substituted butane diperoxoic acids are also known from EP-A-0,083,560 and EP-A-0,136,280, EP-A-0,186,650, EP-A-0,179,233 and EP-A-0168587.
The use of percarboxylic acids in which the molecule includes an amide linkage is described in EP-A-0,170,386. The amide linkage in the carboxylic acid molecule may have either the nitrogen or the carbonyl group closer to the percarboxylic acid moiety. This citation describes further the use of magnesium salts of the peroxy acids in detergent compositions or the use of activators which produce the peroxy acid in situ by reaction with peroxygen bleach source. The activators include an acyl moiety (ultimately forming the percarboxylic acid) and a leaving group. Examples of activators include various N-acyl compounds, including compounds in which the nitrogen atom is part of a heterocyclic ring, examples being imidazole rings and optionally substituted hydantoin rings. Examples of acyl moieties of the percarboxylic acid formed are all aryl derivatives and no examples of any other cyclic moieties are disclosed.
Other examples of nitrogen-containing percarboxylic acids used as oxidising/bleaching agents are succinimides and phthalimides of .omega.-amino alkaneperoxoic acids are described in EP-A-0,325,289, EP-A-3,252,88, EP-A-0,366,041, EP-A-0,349,940 and DE-A-3,906,768. The peracids themselves are said to be sufficiently stable to incorporate directly into detergent compositions. However the peracids, as well as their salts are still of limited stability in a detergent composition.
N-acyl lactams have been used as activators. In GB-A-0,855,735 various N-acyl organo amides, in which the nitrogen atom is part of a heterocyclic ring are described, including N-acetyl saccharin, N-acetyl phthalamide and N-acetyl caprolactam. U.S. Pat. No. 3,982,891 describes imides including a N-bonded substituent of the formula COOR such as N-alkoxycarbonyl-saccharides, phthalimides, succinimides and hydantoins.
Other amide group containing peroxy acid bleaching species are described in U.S. Pat. No. 5,268,003, where the compounds include at least two peroxoic carboxylic acid groups joined by a dibasic group which includes at least two amide groups. Where the nitrogen atoms of both amide groups are located towards the center of the molecule, the nitrogen atoms may each have substituents which are joined so that a heterocyclic group containing both nitrogen atoms is present.
Other nitrogen cont
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Crowther Jan Darrel
Townend John
Anthony Joseph D.
Warwick International Group Limited
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