Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Reexamination Certificate
2000-12-04
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...
C510S315000, C510S318000, C510S372000, C510S376000, C510S378000, C252S186330
Reexamination Certificate
active
06528470
ABSTRACT:
CROSS REFERENCE TO RELATED APPLICATION
This application is based on application Numbers 98-20829 and 99-18840 filed in the Korean Industrial Property Office on Jun. 5, 1998 and May 25, 1999 respectively the content of which is incorporated hereinto by reference.
BACKGROUND OF THE INVENTION
(a) Field of the Invention
The present invention relates to a bleaching activator and a bleaching composition comprising the same, particularly to a bleaching activator comprising a phenanthroline manganese complex and a bleaching composition comprising the same.
(b) Description of the Related Art
Inorganic peroxide (which generates hydrogen peroxide (H
2
O
2
) when dissolved in water) such as sodium perborate (NaBO
3
.H
2
O, NaBO
3
.4H
2
O) and sodium percarbonate (2Na
2
CO
3
.3H
2
O
2
), and hydrogen peroxide have been used as an oxidant for sterilizing or bleaching for a long time. The oxidizing power of these compounds in a dilute solution, that is, the bleaching power, is greatly depended on the temperature. For example, sufficient bleaching effects are obtained only after reaching a temperature of more than 80° C. when using sodium perborate or 60° C. when sodium percarbonate for bleaching textile soiled by fruit juice, wine, vegetables, coffee, or tea. Although the bleaching power of inorganic peroxide radically decreases at a temperature less than 60° C., this peroxide oxidizing power at a low temperature can be elevated by adding a material called a bleaching activator. Varieties of compounds of this material have been suggested in literature, and examples include acyl compounds such as tetraacetylethylenediamine (TAED), ester compounds such as nonanoyloxybenzenesulfonate (NOBS) and isononanoyloxybenzenesulfonate (ISONOBS), etc. Effects generated at 95° C. by peroxide alone can be generated at 60° C. if these materials are added. However, it is well known that at a temperature lower than 60° C. the activator effect is reduced drastically.
As there is a decreasing trend in washing and cleansing temperatures worldwide due to environmental protection and energy conservation, there is interest in the development of bleaching activators that can exhibit bleaching power at even low temperatures. Many transition metal ions are known to promote the decomposition of hydrogen peroxide (H
2
O
2
) or peroxide, so the use of transition metal salts has been suggested. However, a direct application of transition metal salts undesirably causes a bleaching agent to decomposed. Therefore, varieties of transition metal complexes have been developed for the purpose of a bleaching activation, and some of them have been used practically. These complex compounds should not decomposed drastically and should be stable during hydrolysis, oxidation, reduction, etc., so that the transition metal complexes can be used effectively as a bleaching catalyst.
Although a considerable large number of complex compounds (employing transition metals such as cobalt (Co), manganese (Mn), iron (Fe), etc.) have been developed recently, the use of cobalt is not desirable for environmental reasons. Therefore, a lot of patents have been recording the use of manganese. However, as manganese ions or many manganese complex compounds are very much unstable during hydrolysis, these compounds are not adequate to be used with inorganic peroxide bleaching agents.
It is recorded in European Laid-open Patent Numbers 458,397 B1 and 458,398 B1 that binuclear manganese complexes synthesized using a ligand of 1,4,7-trimethyl-1,4,7-triazacyclononane have a considerably high degree of activation in promoting the bleaching effect of peroxides even at the low temperature. However, there is a problem in that various steps must be used to synthesize this ligand, resulting in increasing the overall price of the ligand.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a bleaching activator comprising manganese complexes improving the bleaching activation of peroxide which is a hydrogen peroxide generating oxygen based bleaching agent considering the above mentioned problems of conventional technologies.
It is an other object of the present invention to provide a bleaching activator which is granulated, oil coated, or capsulated, and that increases the stability of the above manganese complex bleaching activators.
It is an another object of the present invention to provide a bleaching composition comprising the above manganese complex bleaching activators.
It is an another object of the present invention to provide a bleaching activator and a bleaching composition comprising the same that increase a bleaching power of bleaching agents used in laundry, dish washing, false teeth rinsing, and in industries such as fabrics, paper, and pulp.
It is an another object of the present invention to provide a bleaching agent and a bleaching detergent composition that are useful in an environment where a low temperature washing is prevalent, such as in Korea.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
In order to accomplish the above objects, the present invention provides a bleaching activator increasing the bleaching power of sodium percarbonate or sodium perborate, wherein the bleaching activator having a phenanthroline manganese complex comprising one or more compounds selected from a group including [MnCl
2
(phen)
2
], [MnBr
2
(phen)
2
], [Mn(H
2
O)
2
(phen)
2
](SO
4
), [Mn(H
2
O)
2
(phen)
2
](ClO
4
)
2
, [Mn(CH
3
COO)
2
(phen)
2
], [Mn
III
Cl
3
(H
2
O)(phen)], [(phen)
2
Mn
IV
(&mgr;-O)
2
Mn
IV
(phen)
2
](ClO
4
)
4
.H
2
O, [(phen)
2
Mn
III
(&mgr;-O)
2
Mn
IV
(phen)
2
](ClO
4
)
3
.xH
2
O (where x=2 or 4), and [(phen)(H
2
O)Mn
III
(&mgr;-O)(&mgr;-CH
3
COO)
2
Mn
III
(phen)(H
2
O)](PF
6
)
2
.
The above phenanthroline manganese complex can be used itself, but is preferably used in a granulated, oil coated, or capsulated form.
The above granulated bleaching activator is manufactured by mixing a) 100 to 1000 weight parts of binder; b) 110 to 3000 weight parts of filler; and c) 100 to 1000 weight parts of a mixed solution of the above phenanthroline manganese complex compound powder and a photo-bleaching agent solution (comprising 0.1 to 20 wt % of photo-bleaching agent).
The above oil coated bleaching activator is manufactured by coating phenanthroline manganese complex granules with oil in water emulsion composition.
The above capsulated bleaching activator is manufactured by coating 1000 weight parts of oil coated phenanthroline manganese complex granules with 100 to 3000 weight parts of a mixture of water soluble materials, photo-bleaching agent or fluorescent dye.
Furthermore, the present invention provides a bleaching composition comprising a bleaching activator comprising the above phenanthroline manganese complex.
Particularly, the above bleaching composition is a peroxide bleaching agent comprising:
a) 0.001 to 5 wt % of a bleaching activator comprising the above manganese based phenanthroline manganese complex; and
b) 1 to 99 wt % of sodium percarbonate peroxide or sodium perbonate peroxide,
or a bleaching detergent comprising:
a) 1 to 40 wt % of peroxide;
b) 1 to 50 wt % of anion surfactant;
c) 1 to 50 wt % of non ion surfactant;
d) 1 to 70 wt % of builder;
e) 0.1 to 10 wt % of tetraacetylethyleneamine; and
f) 0.0001 to 0.5 wt % of bleaching activator comprising the above manganese based phenanthroline manganese complex,
or, the above bleaching composition is a false teeth rinsing agent comprising:
a) 1 to 70 wt % of peroxide comprising one or more selected from a group composed of urea peroxide, sodium percarbonate, sodium perbonate, and calcium peroxide;
b) 0.001 to 10 wt % of bleaching activator comprising the above manganese based phenanthroline manganese complex; and
c) additives comprising a bubbling agent, wetting agent, viscosity increasing agent, and abradant.
And the above bleaching activator comprising a phenanthroline manganese complex compound is granulated, oil coated, or capsulated phenanthroline ma
Choi Kyu-Yeol
Ha Kwang
Jang Chang-Hyun
Kim Jong-Ho
Ko Ki-Hwan
DelCotto Gregory
Fish & Richardson P.C.
LG Chemical Ltd.
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