Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Patent
1995-04-26
1997-02-18
Hertzog, Ardith
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
510337, 510357, 510360, 510394, 510405, 510426, 510475, 510496, 510500, C11D 328, C11D 334, C11D 337, C11D 342
Patent
active
056041942
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to liquid detergent compositions comprising cotton-substantive brighteners. More in particular, the present invention relates to stable liquid dye transfer inhibiting compositions comprising well-defined cotton-substantive brighteners.
BACKGROUND OF THE INVENTION
Cotton-substantive brighteners are commonly used in laundry detergents. Said brighteners deposit onto fabrics where they absorb ultraviolet radiant energy and reemit it as blue light. This reduces or eliminates any yellowish cast to fabrics and gives them a bright appearance. Examples of these brighteners are anionic brighteners with sulfonic acid group(s) e.g. mono- or di-sulfonic acid derivatives of bis-(tri-azinylamino)-stilbene, bis-(tri-azolyl)-stilbene and (sulfo styryl)-biphenyl.
However, it has been found to be difficult to avoid precipitation in liquid detergent compositions containing cotton-substantive brighteners in combination with polymers which exhibit dye transfer inhibiting properties. These polymers are used to complex or absorb the fugitive dyes washed out of dyed fabrics before they have the opportunity to become attached to other articles in the wash. Examples of such polymers that have been used within detergent compositions to inhibit dye transfer are vinylpyrrolidone polymers disclosed in EP-265 257 and EP-508 034.
Surprisingly, it has now been found that improved storage stability of liquid detergent compositions comprising vinylpyrrolidone polymers and cotton-substantive brighteners can be obtained by selecting well-defined type of cotton-substantive brighteners.
According to the present invention, a stable dye transfer inhibiting composition comprising a cotton-substantive brightener is provided which has improved stability upon storage.
SUMMARY OF THE INVENTION
The present invention relates to inhibiting dye transfer compositions comprising
DETAILED DESCRIPTION OF THE INVENTION
The compositions of the present invention comprise as essential elements formula: ##STR2## wherein R1, R2, R3, R4 and R5 independently is selected from a sulfonic acid, hydrogen C1-C4 alkyl, C1-C4 alkoxy, halogen, CN, phenoxy or benzyloxy, under the condition that only one substituent can be sulfonic acid.
The detergent compositions herein contain a polyvinylpyrrolidone ("PVP", having an average molecular weight of from about 2,500 to about 400,000, preferably from about 5,000 to about 200,000, more preferably from about 5,000 to about 50,000, and most preferably from about 5,000 to about 15,000. Suitable polyvinylpyrrolidones are commercially vailable from GAF Corporation, New York, N.Y. and Montreal, Canada under the product names PVP K-15 (viscosity molecular weight of 10,000), PVP K-30 (average molecular weight of 40,000), PVP K-60 (average molecular weight of 160,000), and PVP K-90 (average molecular weight of 360,000). PVP K-15 is also available from GAF Corporation. Other suitable polyvinylpyrrolidones which are commercially available from BASF Corporation include Sokalan HP 165 and Sokalan HP 12. Polyvinylpyrrolidones are known to persons skilled in the detergent field; see for example EP-A-262,897 and EP-A-256,696. Th amount of polyvinylpyrrolidone used in the present detergent compositions should be from about 0.01% to about 5% by weight of the detergent, preferably from about 0.05% to about 3% by weight, and more preferably from about 0.1% to about 2% by weight. The amount of polyvinylpyrrolidone delivered in the wash solution is from about 0.5 ppm to about 250 ppm, preferably from about 2.5 ppm to about 150 ppm, more preferably from about 5 ppm about 100 ppm.
The detergent compositions herein contain a brightener having the following structural formula (1): ##STR3## wherein R1, R2, R3, R4 and R5 independently can be selected from a sulfonic acid radical, hydrogen, C1-C4 alkyl, C1-C4 alkoxy, halogen, CN, phenoxy or benzyloxy, under the condition that only one substituent R1 to R5 can be a sulfonic acid radical.
Preferred halogens are fluorine, chlorine, bromine, highly preferred i
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Derwent Abstract accession No. 86-013463/02 for U.S. 4,559,169, Dec. 17, 1985.
Cauwberghs Serge G. P. R.
Depoot Karel M. J.
Allen George W.
Hertzog Ardith
Jones Michael D.
The Procter & Gamble & Company
Yetter Jerry J.
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