Modified galactomannan ethers
Cationic hydrophobically modified galactomannan ethers having a cationic degree of substitution (DS C ) from 0.01 to 0.5 and hydrophobic degree of substitution (DS H ) below 0.001 are readily soluble in aqueous systems and useful to thicken, stabilize and condition cosmetics, detergent compositions and household cleaning products; they further improve the deposition of other ingredients on the treated surface (skin, hair or fabric).
1. Cationic hydrophobically modified galactomannan ethers having cationic degree of substitution (DSc) from 0.01 to 0.5 and hydrophobic degree of substitution (DS H ) from 0.00001 and below 0.001, in which the hydrophobic substituents are chosen from the group consisting of linear or branched alkyl and/or alkenyl substituents having between 12 and 32 carbon atoms.
2. Cationic hydrophobically modified galactomannan ethers according to claim 1 whose cationic substituents are 2-hydroxy-3-[trimethylammonium]propyl ether chloride groups.
3. Cationic hydrophobically modified galactomannan ether according to claim 2 containing only cationic and hydrophobic substituents.
4. Cationic hydrophobically modified galactomannan ether according to claim 2 further containing hydroxyethyl and/or 2-hydroxypropyl groups.
5. Cationic hydrophobically modified galactomannan ether according to claim 4 in which the total molar substitution of hydroxyethyl and/or hydroypropyl groups ranges from 0.1 to 3.
6. Cationic hydrophobically modified galactomannan ethers according to claim 1 having DSc from 0.1 to 0.3 and DS H between 5·10 −5 and 9·10 −4 .
7. Cationic hydrophobically modified galactomannan ethers according to claim 5 having DSc from 0.1 to 0.3, DS H between 0.00005 and 0.0009, and hydroxypropyl molar substitution from 0.3 to 1.2.
8. Cosmetic compositions containing from 0.01 to 10% by weight of a cationic hydrophobically modified galactomannan ether according to claim 1 .
9. Cosmetic compositions according to claim 8 containing one or more ingredient selected from surfactants, moisturizers, emollients, sunscreens, hydrophilic or lipophilic active agents such as ceramides, anti-free-radical agents, insect repellents, skin coolants, deodorants, antiperspirant actives, hair treatment agents, oral core agents, slimming agents, bactericides, sequestering agents, antidandruff agents, antioxidants, preserving agents, basifying or acidifying agents, fragrances, fillers, dyestuffs, other polymers and emulsifiers, gelling agents, foaming agents.
10. Household cleaning products containing from 0.01 to 10% by weight of a cationic hydrophobically modified galactomannan ether according to claim 1 .
11. Household cleaning products according to claim 10 containing one or more ingredient selected from surfactants, emollients, insect repellents, bactericides, sequestering agents, antioxidants, preserving agents, basifying or acidifying agents, fragrances, fillers, dyestuffs, other polymers and emulsifiers, gelling agents, foaming agents, deodorizers, insecticides, cleaning agents, disinfectants, softeners, laundry detergents, dishwashing detergents.