Azetidinium modified polymers and fabric treatment composition
View Patent ↗The invention relates to a fabric treatment composition which comprises a self-crosslinking polymer possessing pendant azetidinium groups. A first aspect of the invention comprises an azetidinium functionalized polymer containing primary or secondary amine groups. Cross-linking reactions between the azetidinium group and primary or secondary amine groups do not form quaternary groups and consequently do not result in a charged, cross-linked polymer. This lack of charge is believed to overcome the problems of stain fixing and dye adsorption. A second aspect of the present invention subsists in an azetidinium functionalized polymer of which the monomers comprise: an amino-acrylate and/or amino-alkacrylate monomer, and, optionally, further non-amino acrylate and/or alkacrylate monomer. A third aspect of the present invention provides a textile treatment composition which comprises an azetidinium functionalized polymer in accordance with the first or second aspect of the invention and a textile compatible carrier.
1. A fabric treatment composition which comprises an azetidinium functionalised polymer containing secondary amine groups and a textile compatible carrier, wherein the monomers of the polymer comprise:
a) an amino-acrylate and/or amino-alkacrylate monomer, and,
b) optionally, further non-amino acrylate and/or alkacrylate monomers,
and wherein the textile compatible carrier is a detergent active compound or a textile softening or conditioning agent; and
wherein the detergent active compound is selected from soap and non-soap anionic, cationic, nonionic, amphoteric and zwitterionic detergent active compounds, and mixtures thereof; and
wherein the textile softening or conditioning agent is a water-insoluble quaternary ammonium compound.
2. A fabric treatment composition according to claim 1 wherein the concentration of the polymer is such as to give 0.01-1% wt on weight of fabric material being treated.
3. A polymer according to claim 1 wherein the amine containing acrylate monomers have the general structure:
wherein
R 1 is hydrogen or a C 1 -C 6 alkyl,
R 2 is C 1 -C 6 alkyl, alkoxy or repeating units thereof, and
R 3 is hydrogen or C 1 -C 6 alkyl, alkoxy or repeating units thereof.
4. A polymer according to claim 1 wherein the amine containing acrylate monomers include one or more of 2-Aminoethyl methacrylate and 2-(tert-butylamino)ethyl methacrylate.
5. A polymer according to claim 1 wherein the non-amino acrylate and/or alkacrylate monomers are of the general formula:
where:
R 1 is hydrogen or a C 1 -C 6 alkyl, alkoxy or repeat units thereof and
R 4 is a functional group does not contain an amine.
6. A polymer according to claim 5 wherein R 4 is a polyalkyleneglycol.
7. A polymer according to claim 6 wherein the non-amino monomer is one or more of
poly(ethyleneglycol)methacrylate, poly(propyleneglycol)methacrylate,
poly(ethyleneglycol)acrylate, and
poly(propylene glycol)acrylate.
8. A polymer according to claim 5 wherein R 4 is poly(dialkyl siloxane) or poly(alklene glycol) fatty ether.
9. A polymer according to claim 5 wherein R 4 is one or more of one or more of:
2,2,3,3,4,4,5,5-Octafluoropentyl acrylate,
2,2,3,3,4,4,5,5-Octafluoropentyl methacrylate,
2,2,3,3,4,4-Hexafluorobutyl acrylate,
2,2,3,3,4,4-Hexafluorobutyl methacrylate,
1,1,3,3,5,5-Hexafluoroisopropyl acrylate, and
1,1,3,3,5,5-Hexafluoroisopropyl methacrylate.