Anionic surfactants and detergents comprising them
AssigneesHenkel AG & Co. KGaA, Studiengesellschaft Kohle mbH
InventorsChristian Kropf, Alexander Schulz, Hendrik Hellmuth, Roberto Rinaldi, Hebert Jesus Estevez Rivera
Life of this patent
Estimating the term…
Abstract
Surfactants of the general formula (I) in which R1 is a linear or branched akyl radical having 6 to 20, especially 10 to 16 C atoms, R2 and R3 independently of one another are H or H3CO, and M is hydrogen, an alkali metal or a moiety N+R4R5R6, in which R4, R5 and R6 independently of one another are hydrogen, an alkyl group having 1 to 6 C atoms or a hydroxyalkyl group having 2 to 6 C atoms, are readily incorporated into laundry detergents or cleaning products, possess outstanding performance qualities and can be prepared on the basis of renewable raw materials.
Claims18
An anionic surfactant of general formula (I),
- in which R′ denotes a linear or branched alkyl functional group having 6 to 20 carbon atoms, R2 and R3, independently of one another, denote H or H3CO, and M denotes hydrogen, an alkali metal or an N+R4R5R6 grouping, in which R4, R5 and R6, independently of one another, denote hydrogen, an alkyl group having 1 to 6 carbon atoms or a hydroxyalkyl group having 2 to 6 carbon atoms.
A method for producing an anionic surfactant of general formula (I),
- in which R1 denotes a linear or branched alkyl functional group having 6 to 20 carbon atoms, R2 and R3, independently of one another, denote H or H3CO, and M denotes hydrogen, an alkali metal or an N+R4R5R6 grouping, in which R4, R5 and R6, independently of one another, denote hydrogen, an alkyl group having 1 to 6 carbon atoms or a hydroxyalkyl group having 2 to 6 carbon atoms,
- comprising the step of sulfonating a compound of general formula (II),
- in which R1 denotes a linear or branched alkyl functional group having 6 to 20 carbon atoms, R2 and R3, independently of one another, denote H or H3CO, with a sulfating agent,
- and neutralization by way of subsequent reaction with MOH, wherein M denotes an alkali metal or an N+R4R5R6 grouping, in which R4, R5 and R6, independently of one another, denote hydrogen, an alkyl group having 1 to 6 carbon atoms or a hydroxyalkyl group having 2 to 6 carbon atoms.
A method for producing a compound of general formula (II),
- in which R1 denotes a linear or branched alkyl functional group having 6 to 20 carbon atoms, le and R3, independently of one another, denote H or H3CO,
- comprising the step of reacting a compound of general formula (III),
- in which R2 and R3, independently of one another, are H or H3CO,
- with a compound R1-Hal, in which R1 denotes a linear or branched alkyl functional group having 6 to 20 carbon atoms, and Hal denotes chlorine, bromine, iodine or mixtures thereof, under alkaline conditions.
A washing or cleaning agent, comprising an anionic surfactant of general formula (I),
- in which R1 denotes a linear or branched alkyl functional group having 6 to 20 carbon atoms, R2 and R3, independently of one another, denote H or H3CO, and M denotes hydrogen, an alkali metal or an N+R4R5R6 grouping, in which R4, R5 and R6, independently of one another, denote hydrogen, an alkyl group having 1 to 6 carbon atoms or a hydroxyalkyl group having 2 to 6 carbon atoms.
Dependencies are inferred from the claim text.