Hydrophobic modified diquaternary monomers and polymers as thickening agents of acidic aqueous compositions
View Patent ↗The invention relates to the preparation of hydrophobic modified diquaternary cationic monomers and their copolymer as well as the use such monomers and copolymers as thickening agents/rheology modifiers for acidic compositions. The hydrophobic modified diquaternary cationic monomer having the general formula: wherein X is selected from O, NH, or NR; Y is any alkyl, alkylene with or without heteroatoms, and R 0 , R 1 , R 2 R 3 , R 4 , which are identical or different, are selected from C1–C4 alkyl groups, R is selected from any alkyl group with or without heteroatoms, and R 5 is a hydrphobe having an alkyl chain of more than 4 atoms.
1. A hydrophobic modified copolymer having the formula:
wherein X is selected from O, NH, or NR; Y is any alkyl, alkylene with or without heteroatoms, and R 0, R 1 , R 2 R 3 , R 4 , which are identical or different, are selected from C1–C4 alkyl groups, R is selected from any alkyl group with or without heteroatoms, and R 5 is a hydrphobe having an alkyl chain or more than 4 atoms.
2. A process for synthesizing the copolymer compound of claim 1 comprising the following reaction scheme:
wherein R is selected from C 12 H 23 or C 18 H 37 and X is selected from ethylene and propylene.
3. The process of claim 2 comprising suspension polymerization in an aqueous sodium carbonate, bicarbonate, or combination thereof.
4. An acidic home care formulation having a pH of 4 or below comprising a copolymer derived from one or more hydrophobic modified quaternary monomers said copolymer having the formula
wherein R is selected from C 12 H 23 or C 18 H 37 and X is selected from ethylene and propylene.
5. The formulation of claim 4 wherein said monomer is a thickening agent.
6. The formulation of claim 4 wherein said home care formulation is a toilet bowl cleaner or a fabric softener.
7. A quaternary surfactant containing formulation comprising a rheology modifying agent, said rheology modifying agent comprising a hydrophobic modified diquaternary monomer or a copolymer wherein said copolymer has the formula:
wherein R is selected from C 12 H 23 or C 18 H 37 and X is selected from ethylene and propylene.