Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Patent
1996-07-10
1998-07-07
Lieberman, Paul
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
510276, 510302, 510313, 510324, 510340, 510360, 510287, C11D 337, C11D 342, C11D 3395, C11D 183
Patent
active
057768781
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to liquid detergent compositions comprising optical brighteners. More in particular, the present invention relates to the use of polyamine N-oxide containing polymers and/or N-vinylimidazole N-vinylpyrrolidone copolymers in detergent compositions containing brighteners for reducing fabric spotting associated with the use of said brighteners.
BACKGROUND OF THE INVENTION
Optical brighteners, also known as fluorescent whitening agents, are commonly used in liquid laundry additives. 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.
A specific problem associated with liquid detergent compositions containing brighteners is their undiluted application on textiles, on which high brightener concentration becomes visible as a whitener spot.
The present invention is based on the discovery that polyamine N-oxide containing polymers and/or N-vinylimidazole N-vinylpyrrolidone copolymers inhibit the fabric spotting of brighteners. Said 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.
Copending EP Patent Application 92202168.8 describes dye transfer inhibiting compositions comprising polyamine N-oxides containing polymers. N-vinylimidazole N-vinylpyrrolidone copolymers are described in prior art documents such as DE 2 814 287-A which relates to detergent compositions comprising 0.1 to 10 wt % water-soluble or water-dispersible N-vinyl imidazole homo- or copolymer in combination with anionic and/or nonionic surfactants and other detergent ingredients. EP 372 291 relates to a process for washing discolouration-sensitive textiles. The wash liquor contains anionic
onionic surfactants and watersoluble polymers e.g. (co)polymers N-vinylimidazole, N-vinyloxazolidone or N-vinylpyrrolidone. EP 327 927 describes a granular detergent additive comprising water-soluble polymeric compounds based on N-vinylpyrrolidone and/or N-vinylimidazole and/or N-vinyloxazolidone and cationic compounds. DE 4027832-A discloses electrolyte-free liquid detergent compositions comprising zeolite A, nonionic surfactants and dye transfer inhibiting polymers. The dye transfer inhibiting polymers are homo-and copolymers selected from N-vinylpyrrolidone and/or N-vinylimidazole and/or N-vinyloxazolidone.
According to the present invention, a liquid detergent composition comprising a brightener is provided which reduces or eliminates the fabric spotting of brighteners upon pretreatment.
SUMMARY OF THE INVENTION
The present invention relates to the use of a polyamine N-oxide containing polymers and/or N-vinylimidazole N-vinylpyrrolidone copolymers in liquid detergent compositions for inhibiting fabric spotting associated with detergent compositions containing brighteners.
DETAILED DESCRIPTION OF THE INVENTION
The compositions of the present invention comprise as essential elements a brightener and a polymer selected from polyamine N-oxide containing polymers and/or N-vinylimidazole N-vinylpyrrolidone copolymers.
The compositions of the present invention comprise as an essential element a polymer selected from polyamine N-oxide containing polymers which contain units having the following structure formula: ##STR1## wherein P is a polymerisable unit, whereto the N--O group can be attached to or wherein both. ##STR2## R are aliphatic, ethoxylated aliphatics, aromatic, heterocyclic or alicyclic groups or any combination thereof whereto the nitrogen of the N--O group can be attached or wherein the nitrogen of the N--O group is part of these groups. ##STR3## wherein R1, R2, and R3 are aliphatic groups, aromatic, heterocyclic or alicyclic groups or combinations thereof, x or/and y or/and z is 0 or 1 and wherein the nitrogen of the N--O group can be attached or wherein the nitrogen of the N--O group forms part of these groups.
The N--O group can be pa
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Boyer Charles
Lieberman Paul
Patel Ken K.
Rasser Jacobus C.
The Procter & Gamble & Company
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