Compositions comprising anionic functionalized polyorganosiloxanes for hydrophobically modifying surfaces and enhancing delivery of active agents to surfaces treated therewith
First Claim
1. A composition for treating and hydrophobically modifying surfaces containing cationic sites, comprising at least about 0.001% by weight of an anionic functionalized siloxane polymer of formula R1R2R3SiO(R4R5SiO)p(R6ASiO)qSiR3R2R1 wherein R1 to R6, which may be identical or different, each represents a linear or branched C1-C8 alkyl or a phenyl radical;
- A represents a carboxy group containing radical of formula wherein B represents an alkylene residue having from 2 to 30 carbon atoms, optionally interrupted by up to 8 non-neighboring oxygen atoms or groups of the formula —
NR7—
, —
CO—
or —
C(O)—
O—
C(O)—
, (wherein R7 is hydrogen or C1-C4 alkyl, L represents CR′
or phenyl, wherein R′
represents a hydrogen atom, an alkyl radical having from 1 to 30 carbon atoms or a carboxy group, E is nil or is an alkylene residue having from 1 to 5 carbon atoms, optionally substituted by one or more alkyl radicals having from 1 to 8 carbon atoms, Z represents an anionic functional group selected from hydroxy, amino, carboxy, or alkoxy, wherein when L is CR′
, Z is other than carboxy and when L is phenyl, the groups -E-C(O)OM and -E-Z are ortho to each other and E is nil, and M is H, an alkyl group having from 1 to 4 carbon atoms optionally substituted with a hydroxy or alkoxy groups or a cation selected from the group consisting of alkali metal, alkaline earth metal, and substituted or non substituted ammonium, piperidinium or alkanolamine;
p is an average value ranging from 0 to 1000; and
q is an average value ranging from 1 to 100.
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Accused Products
Abstract
Disclosed are compositions and methods for treating and modifying surfaces and for enhancing delivery of active agents to surfaces treated therewith, wherein the compositions comprise siloxane polymers functionalized with pendant moieties comprising two or more anionic groups, at least one anionic group being a carboxy group. When applied to a suitable surface, the present composition forms a substantially hydrophobic coating of the anionic functionalized siloxane polymer on the treated surface. These polymers effectively deposit on surfaces that have cationic sites, which are capable of forming bonds or linkages with the anionic groups of the polymer. The treated surface becomes hydrophobic due to the deposition of the anionic functionalized siloxane polymer, which then imparts a variety of end use benefits to that surface such as ease of cleaning, soil release, stain removal and prevention, conditioning, etc. The anionic functionalized siloxane polymer further acts as a carrier to deposit active agents onto the surface and to improve retention and efficacy of the active agents on the treated surface. The present compositions are useful in a variety of applications including oral care, hair and skin care, personal care, cosmetics, and fabric and hard surface cleaning and conditioning.
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Citations
10 Claims
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1. A composition for treating and hydrophobically modifying surfaces containing cationic sites, comprising at least about 0.001% by weight of an anionic functionalized siloxane polymer of formula
R1R2R3SiO(R4R5SiO)p(R6ASiO)qSiR3R2R1 wherein R1 to R6, which may be identical or different, each represents a linear or branched C1-C8 alkyl or a phenyl radical; -
A represents a carboxy group containing radical of formula wherein B represents an alkylene residue having from 2 to 30 carbon atoms, optionally interrupted by up to 8 non-neighboring oxygen atoms or groups of the formula —
NR7—
, —
CO—
or —
C(O)—
O—
C(O)—
, (wherein R7 is hydrogen or C1-C4 alkyl,L represents CR′
or phenyl, wherein R′
represents a hydrogen atom, an alkyl radical having from 1 to 30 carbon atoms or a carboxy group,E is nil or is an alkylene residue having from 1 to 5 carbon atoms, optionally substituted by one or more alkyl radicals having from 1 to 8 carbon atoms, Z represents an anionic functional group selected from hydroxy, amino, carboxy, or alkoxy, wherein when L is CR′
, Z is other than carboxy and when L is phenyl, the groups -E-C(O)OM and -E-Z are ortho to each other and E is nil, andM is H, an alkyl group having from 1 to 4 carbon atoms optionally substituted with a hydroxy or alkoxy groups or a cation selected from the group consisting of alkali metal, alkaline earth metal, and substituted or non substituted ammonium, piperidinium or alkanolamine;
p is an average value ranging from 0 to 1000; and
q is an average value ranging from 1 to 100. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of enhancing efficacy of compositions for treating surfaces containing cationic sites comprising adding to said compositions a carrier for active agents comprising an anionic functionalized siloxane polymer in an amount effective to hydrophobically modify said surfaces and to enhance deposition and retention of said active agents on said treated surfaces.
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10. A method of whitening a subject'"'"'s teeth comprising treating the subject'"'"'s teeth with a composition comprising a bleaching agent and an anionic functionalized hydrophobic polymer, wherein said composition deposits and retains a hydrophobic coating and said bleaching agent on teeth for a sufficient period of time for effective bleaching and whitening.
Specification