Hydrophobically modified polymers as laundry additives
The present invention is directed to polymeric compounds comprising a main backbone derived from at least the following monomeric components: (I) 20 to 99.9% by weight, preferably 50% to 99% by weight, of at least one cationic monomer according to formula (I), and (II) 0.1 to 80% by weight of a hydrophobic unsaturated nonionic monomer that polymerizes in the presence of an initiator, optionally a water-soluble monomer (III) different from either monomer (I) and monomer (II), and optionally a crosslinking agent (IV). Said compounds are particularly useful to overcome the problem of dye bleeding and/or dye transfer in laundry processes.
1. A polymeric compound formed from a mixture of monomeric components consisting of:
(I) 20 to 99.9% by weight of at least one cationic monomer according to formula (1)
where
R 1 and R 2 are, independently of one another, hydrogen or C 1 -C 4 alkyl;
R 3 and R 4 are, independently of one another, hydrogen, or an alkyl, hydroxyalkyl, carboxyalkyl, carboxyamidealkyl or alkoxyalkyl group having from 1 to 18 carbon atoms; and
Y − represents an anion;
(II) 0.1 to 80% by weight of at least one hydrophobic unsaturated nonionic monomer that polymerizes in the presence of an initiator selected from the group consisting of styrene, esters of (meth)acrylic acid, (meth)acrylonitrile, esters of unsaturated polyfunctional acids and vinyl esters of C 2 to C 18 carboxylic acids;
(III) 0 to 60% by weight of a water-soluble monomer different from monomer (I) and monomer (II) selected from the group consisting of vinyl amine, vinyl alcohol, vinyl derivatives of dimethyl siloxane, aminosiloxanes, hydroxyalkyl acrylates, (meth)acrylic acid and (meth)acrylic acid salts; and
(IV) 0 to 10% by weight a crosslinking agent.
2. A polymeric compound according to claim 1 wherein at least one cationic monomer (I) is selected from the group consisting of diallyldimethyl ammonium chloride (DADMAC), diallyldimethyl ammonium bromide, diallyldimethyl ammonium sulfates, diallyldimethyl ammonium phosphates, dimethallyl dimethyl ammonium chloride, diethylallyl dimethyl ammonium chloride, diallyl di(beta-hydroxyethyl) ammonium chloride, and diallyl di(beta-ethoxyethyl) ammonium chloride.
3. A polymeric compound according to claim 1 wherein at least one cationic monomer (I) is diallyldimethyl ammonium chloride (DADMAC).
4. A polymeric compound according to claim 1 wherein hydrophobic monomeric reactant (II) has a value for water solubility of less than about 50 g/100 g of water at room temperature and a pH of 7.
5. A polymeric compound according to claim 1 wherein at least one hydrophobic monomer (II) is represented by formula (B)
where R 5 is H or CH 3 , and R 6 is C 1 -C 12 alkyl, C 1 -C 6 alkylphenyl that may be substituted one to three times by C 1 -C 12 alkyl or C 1 -C 12 alkoxy, or C 1 -C 6 alkylphenyl interrupted one or more times by oxygen wherein the phenyl group may be substituted one to three times by C 1 -C 12 alkyl or C 1 -C 12 alkoxy; C 1 -C 6 alkylhydroxy
and X is a divalent oxygen radical.
6. A polymeric compound according to claim 1 wherein hydrophobic monomer (II) is selected from the group consisting of
wherein R 5 is H or CH 3 .
7. A polymeric compound according to claim 1 wherein water-soluble monomer (III) has a value for water solubility greater than 50 g/100 g water at room temperature and at a pH of 7.
8. A polymeric compound according to claim 1 having an average molecular weight in the range of 1000 to 5 million Daltons.
9. A cleaning product comprising the polymeric compound according to claim 1 and an effective amount of one or more surfactants.
10. A cleaning product according to claim 9 in the form of a laundry detergent, fabric conditioner, pre-treatment agent, after treatment agent or tumble dry sheet having improved dye fixation and dye transfer inhibition.
11. A cleaning product according to claim 9 in the form of a dishwashing formulation.
12. A cleaning product according to claim 9 comprising 0.001% to 50% by weight of said polymeric compound.
13. A cleaning product according to claim 9 further comprising at least one modifying ingredient selected from the group consisting of softeners, perfumes, soil release polymers, colorants, preservatives, antimicrobials, insect repellents, dust mites repellents, optical brighteners, UV absorbers, other light management agents, ionization agents, antifoam agents, enzymes, bleaching agents, oxidation catalysts, zeolites, and odor suppressing agents.
14. A textile processing formulation comprising 0.001% to 50% by weight of a polymeric compound according to claim 1 in liquid or solid form.
15. Dyeing or printing auxiliaries and/or finishing agents comprising the textile formulation according to claim 14 .
16. A method for textile processing comprising addition of the textile formulation according to claim 14 before, during and after dyeing to improve the wet fastness and prevent color fading of the textile.