Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Patent
1996-11-11
1999-06-01
Lieberman, Paul
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
510305, 510312, 510313, 510315, 510357, 510374, 510376, 510377, 510500, 510513, C11D 3395, C11D 754
Patent
active
059088214
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a composition and a process for inhibiting dye transfer between fabrics during washing. More in particular, the present invention relates to a composition and a process for inhibiting dye transfer between fabrics during washing comprising specifically selected metallo catalysts.
BACKGROUND OF THE INVENTION
One of the most persistent and troublesome problems arising during modern fabric laundering operations is the tendency of some colored fabrics to release dye into the laundering solutions. The dye is then transferred onto other fabrics being washed therewith.
One way of overcoming this problem would be to bleach the fugitive dyes washed out of dyed fabrics before they have the opportunity to become attached to other articles in the wash.
Suspended or solubilized dyes can to some degree be oxidized in solution by employing known bleaching agents.
However it is important at the same time not to bleach the dyes actually remaining on the fabrics, that is, not to cause color damage.
U.S. Pat. No. 4,077,768 describes a process for inhibiting dye transfer by the use of an oxidizing bleaching agent together with a catalytic compound such as iron porphins.
Copending EP Patent Application 91202655.6 filed Oct. 9, 1991, relates to dye transfer inhibiting compositions comprising an enzymatic system capable of generating hydrogen peroxide and porphin catalysts.
It has now been found that specifically selected metallo catalysts in the presence of an efficient amount of a quick releasing bleaching agent are very efficient in preventing dye transfer.
Accordingly, a dye transfer inhibiting composition is provided which exhibits optimum dye transfer inhibiting properties.
According to another embodiment, the invention provides an efficient process for laundering operations involving colored fabrics.
SUMMARY OF THE INVENTION
The present invention relates to inhibiting dye transfer compositions comprising
i) one or more of a specific metallo catalyst selected from the group of porphyrins and/or phthalocyanines,
ii) an efficient amount of bleaching agent.
DETAILED DESCRIPTION OF THE INVENTION
The term "specific metallo catalysts" herein encompasses one or more of a specific metallo catalyst selected from the groups of porphyrins and/or phthalocyanines as defined below.
A) porphyrins having the following formula I: ##STR1## wherein M is a transition metal capable of sustaining oxidation, and if desired may also be joined to one or more axial ligands in addition to the four nitrogen groups, each Y and Y.degree. is independently H, fluoro or chloro, each R ring is ##STR2## X and X' are independently H or an electronegative group which is not a water solubilizing group, eg. X and X' are independently, fluoro, chloro, bromo, or NO.sub.2, X.sub.1, X.sub.2 and X.sub.3 are independently H or an electronegative group, including water solubilizing electronegative groups, including without limitation fluoro, chloro, bromo, SO.sub.3 H, COOH or NO.sub.2, subject to the provisions that
1) when none of X1, X2 and X3 is a water solubilizing group, then at least one Y and Y.degree. on each porphyrin ring is other than H,
2) when Y and Y.degree. are both H, at least one but not more than two of X.sub.1, X.sub.2 and X.sub.3 is a water solubilizing group, eg. SO.sub.3 H or COOH, and at least two of X and X.degree. and the X.sub.1, X.sub.2 and X.sub.3 which are not a water solubilizing group are independently an electronegative group which is not a water solubilizing group, e.g. fluoro, chloro, bromo or NO.sub.2, and
3) no more than two of X.sub.1, X.sub.2 and X.sub.3 are water solubilizing groups, or the water soluble salts thereof; and compounds of formula I in which said water solubilizing groups are in corresponding water soluble salt form.
Particular subgroups of the compounds of the formula I are the compounds of the formulae Ia and Ib.
The compounds of the formula Ia are those with reference to the structural formula I in which :
a) at least one of Y and Y.degree. on each p
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Johnston James Pyott
Labeque Regine
Bolam Brian M.
Dusheck Caroline L.
Echler, Sr. Richard S.
Lieberman Paul
Procter & Gamble Company
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