Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Reexamination Certificate
1998-10-13
2003-03-04
Delcotto, Gregory (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
C510S305000, C510S311000, C510S312000, C510S370000, C510S371000, C510S372000, C510S374000, C510S376000, C510S378000, C008S111000, C008S137000, C252S186330
Reexamination Certificate
active
06528469
ABSTRACT:
The present invention relates to fabric bleaching compositions comprising a peroxygen compound and, as bleach activator, a manganese compound.
Bleaching compositions which contain a peroxide bleaching agent are well-known. When soiled clothing is contacted with such bleaching compositions, usually by washing the soiled clothing in the presence of the bleaching composition at the boil, the bleaching agent functions to remove such common domestic stains as tea, coffee, fruit and wine stains from clothing. If the washing temperature is reduced to below 60° C., however, the efficacy of the the bleaching agent is correspondingly reduced.
It is also well-known that certain heavy metals, or complexes thereof, function to catalyze the decomposition of hydrogen peroxide, or of compounds which are capable of liberating hydrogen peroxide, in order to render the peroxide compound effective at temperatures below 60° C.
For example, in U.S. Pat. No. 5,114,511, there is described the activation of a peroxy compound by a complex formed from a transition metal (Mn, Co, Fe or Cu) and a non-(macro)cyclic ligand, preferably 2,2-bispyridylamine or 2,2-bispyridylmethane.
Moreover, in U.S. Pat. No. 5,114,606, there is disclosed a manganese complex, for use as a bleach catalyst for a peroxy compound, which is a water-soluble complex of manganese II, III or IV, or mixtures thereof, with a ligand which is a non-carboxylate polyhydroxy compound, having at least three consecutive C—OH groups in its molecular structure, preferably sorbitol.
It has now been found that certain other manganese compounds are also excellent bleach catalysts for peroxy compounds and, surprisingly, relative to known bleach catalysts, provide enhanced bleach effects at low wash temperatures (e.g. at 15 to 40° C.) and/or using shorter washing times.
Accordingly, the present invention provides a fabric bleaching composition comprising
a) a peroxy compound; and
b) 0.0005 to 0.5, preferably 0.005 to 0.05%, by weight of manganese, of a manganese compound having one of the formulae:
in which R
1
is hydrogen, alkyl, cycloalkyl or aryl; R
2
is hydrogen, alkyl, alkoxy, halogen, cyano, NH(alkyl), N(alkyl)
2
, N
⊕
(alkyl)
3
, SO
3
M, COOM or hydroxy; Y is a direct bond, a C
2
-C
8
-alkylene residue which is substituted or interrupted by one or more aryl or arylene groups, especially phenyl or phenylene groups, or Y is a bicyclic cyclohexylene group, especially
or arylene, preferably naphthalene or, especially, o-, m- or p-phenylene, or Y is a residue having the formula:
Y
1
is o-, m- or p-phenylene; M is hydrogen, an alkali metal atom, ammonium or a cation formed from an amine; q is 0, 1, 2 or 3; and A an anion.
When R
1
or R
2
is alkyl, preferred alkyl groups are C
1
-C
12
-, especially C
1
-C
4
-alkyl groups. The alkyl groups may be unbranched or branched.
Alkoxy groups R
2
are preferably C
1
-C
8
-, especially C
1
-C
4
-alkoxy groups. The alkoxy groups may be unbranched or branched.
Halogen atoms R
2
are preferably bromo or, especially, chloro atoms.
N(optionally substituted alkyl)
2
groups R
2
are preferably N(optionally substituted C
1
-C
4
alkyl)
2
groups, especially N(methyl)
2
or N(ethyl)
2
.
N
⊕
(optionally substituted alkyl)
3
groups R
2
are preferably N
⊕
(optionally substituted C
1
-C
4
alkyl)
3
, especially N
⊕
(methyl)
3
or N
⊕
(ethyl)
3
.
When R
1
is cycloalkyl, it is preferably cyclopentyl or cyclohexyl.
When R
1
is aryl, it is preferably a phenyl or naphthyl group. Any aryl group R
1
or any aryl group which is a component of a group Y may be substituted e.g. by C
1
-C
4
-alkyl, such as methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec.-butyl or tert.-butyl, by C
1
-C
4
-alkoxy such as methoxy, ethoxy, propoxy, isopropoxy, butoxy, isobutoxy, sec.-butoxy or tert.-butoxy, by halogen such as fluorine, chlorine or bromine, by C
2
-C
5
-alkanoyl, by benzoyl, by C2-C5-alkanoylamino, such as acetylamino, propionylamino or butyrylamino, by nitro, SO
3
M, CO
2
M, in which M has its previous significance, or by di-C
1
-C
4
alkyl amino.
When Y is a C
2
-C
8
-alkylene residue which is substituted or interrupted by one or more aryl or arylene groups, especially phenyl or phenylene groups, examples of preferred groups Y of this type include groups having the formula:
—CH
2
—(o-, m- or p- )phenylene-CH
2
—.
Anions A include halide, especially chloride, chlorate, sulphate, nitrate, hydroxy, C
1
-C
4
alkoxy, preferably methoxy, BF
4
, PF
6
, C
1
-C
4
carboxylate, especially acetate, or triflate or tosylate.
With respect to the compounds of formula (1), preferably each R
1
is hydrogen, R
2
is hydrogen, OH or SO
3
M in which M has its previous significance and is preferably Na, q is 1, Y is a direct bond, C
2
-C
8
-alkylene interrupted or substituted by optionally substituted o-, m- or p-phenylene, a bicyclic cyclohexylene group or Y is optionally substituted o-, m- or p-phenylene and A is hydroxy.
In relation to the compounds of formula (2), preferably each R
1
is hydrogen, R
2
is hydrogen, OH or SO
3
M in which M has its previous significance and is preferably Na, q is 0 or 1 and A is hydroxy.
With regard to the compounds of formula (3), (4) or (5), preferably each R
2
is hydrogen, OH or SO
3
M in which M has its previous significance and is preferably Na and q is 0 or 1 and for the compounds of formula (3) or (4), A is hydroxy.
In each of the compounds of formula (1) to (5), it is preferred that they are used in neutral form, i.e. that M, when present, is other than hydrogen, preferably a cation formed from an alkali metal, in particular sodium, or from an amine.
The compounds of formula (1) to (5) may be produced by known methods, e.g. by the methods analogous to those disclosed in U.S. Pat. No. 4,655,785 relating to similar copper compounds.
The peroxy component a) of the fabric bleaching compositions of the present invention may be hydrogen peroxide, a compound which liberates hydrogen peroxide, a peroxyacid, a peroxyacid bleach precursor or a mixture thereof.
Compounds which liberate hydrogen peroxide are well known and include, e.g., inorganic compounds such as alkali metal peroxides, -perborates, -percarbonates, -perphosphates and -persulfates and organic compounds such as peroxylauric acid, peroxybenzoic acid, 1,12-diperoxydodecanoic acid, diperoxyisophthalic acid and urea peroxide, as well as mixtures thereof. Sodium percarbonate and sodium perborate, in particular sodium perborate monohydrate, are preferred.
Peroxyacid compounds and peroxyacid bleach precursors are also well known and a summary of references describing them is provided in the above-mentioned U.S. Pat. No. 5,114,606.
Examples of peroxyacid bleach precursors include
benz(4H)-1,3-oxazin-4-one derivatives, especially substituted 2-phenyl-benz(4H)-1,3-oxazin-4-one
2-(N,N,N-trimethyl ammonium) ethyl sodium-4-sulfophenyl carbonate chloride (SPCC)
N-octyl,N,N-dimethyl-N10-carbophenoxy decyl ammonium chloride (ODC)
3-(N,N,N-trimethyl ammonium) propyl sodium 4-sulfophenyl carboxylate
N,N,N-trimethyl ammonium toluyloxy benzene sulfonate
sodium4-benzoyloxy benzene sulfonate (SBOBS)
N,N,N′,N′-tetraacetyl ethylene diamine (TAED)
sodium-1-methyl-2-benzoyloxy benzene-4-sulfonate
sodium-4-methyl-3-benzoyloxy benzoate and
sodium nonanoyloxybenzene sulfonate (NOBS).
The substituted 2-phenyl-benz(4H)-1,3-oxazin-4-one, NOBS and TAED precursors are preferred.
Preferably, the amount of the peroxy compound in the fabric bleaching composition according to the invention ranges from 0.5 to 50%, especially from 2 to 20% by weight, based on the total weight of the composition.
The fabric bleaching compositions of the present invention preferably also comprises a surfactant and a detergent builder component.
The surfactant component is preferably an anionic surfactant, a nonionic surfactant or a mixture thereof and is preferably present in an amount of 5 to 50%, especially 5 to 25% by weight, based on the total weight of the fabric bleaching composition.
The anionic surfactant component may be, e.g., a sulphate, sulphonat
Metzger Georges
Reinehr Dieter
Ciba Specialty Chemicals Corporation
Delcotto Gregory
Mansfield Kevin T.
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