Glucamide-based surfactants
AssigneeClariant International Ltd.
InventorsNirupam Purkayastha, Dirk LEINWEBER, Dirk Roland KUPPERT
Life of this patent
Estimating the term…
Abstract
An N-acylglucamide compound of the formula (I) where R2 is a linear or branched alkyl group or an aryl group; X is a moiety R1, which is a linear or branched alkyl group comprising 8 to 18, carbon atoms, which is substituted by one hydroxy group; or X is a moiety R1, which is a linear or branched, mono- or polyunsaturated alkenyl group comprising 8 to 18 carbon atoms, which is substituted by one hydroxy group, And blends and aqueous surfactant solutions comprising it.
Claims19
An N-acylglucamide compound of the formula (I)
- where
- R2 is a linear or branched alkyl group or an aryl group;
- X is a moiety R1, which is a linear or branched alkyl group comprising 8 to 18, carbon atoms, which is substituted by one hydroxy group;
- or
- X is a moiety R1, which is a linear or branched, mono- or polyunsaturated alkenyl group comprising 8 to 18 carbon atoms, which is substituted by one hydroxy group.
A mixture consisting of at least one N-acylglucamide compound of the formula (Ia)
- and at least one N-acylglucamide compound of the formula (Ib)
- wherein
- R2 is a linear or branched alkyl group or an aryl group;
- X is a moiety R1, which is a linear or branched alkyl group comprising 8 to 18, carbon atoms, which is substituted by one hydroxy group;
- or
- X is a moiety R1′, which is a linear or branched, mono- or polyunsaturated alkenyl group comprising 8 to 18 carbon atoms, which is substituted by one hydroxy group.
A process for the preparation of compounds of the formula (I)
- where
- R2 is a linear or branched alkyl group or an aryl group;
- X is a moiety R1, which is a linear or branched alkyl group comprising 8 to 18, carbon atoms, which is substituted by one hydroxy group or
- X is a moiety R1′, which is a linear or branched, mono- or polyunsaturated alkenyl group comprising 8 to 18 carbon atoms, which is substituted by one hydroxy group wherein the process comprises the steps of:
- i. Providing fatty acids or fatty acid derivatives of the formula XCOR3, wherein X is as described in formula (I) above and R3 is hydroxy, a linear or branched C1-C4-alkoxy group or halogen;
- ii. Amidation of the fatty acid or fatty acid derivative of the formula XCOR3, with an N-alkyl- or aryl-glucamine, in a polar protic solvent in presence of a base catalyst.
(canceled)
(canceled)
A process for the preparation of a mixture consisting of at least one N-acylglucamide compound of the formula (Ia)
- and at least one N-acylglucamide compound of the formula (Ib)
- wherein
- R2 is a linear or branched alkyl group or an aryl group;
- X is a moiety R1, which is a linear or branched alkyl group comprising 8 to 18, carbon atoms, which is substituted by one hydroxy group;
- or
- X is a moiety R1′, which is a linear or branched, mono- or polyunsaturated alkenyl group comprising 8 to 18 carbon atoms, which is substituted by one hydroxy group, wherein the process comprises the steps of:
- i. Providing fatty acids or fatty acid derivatives of the formula XCOR3, wherein X is as described in formula (I) above and R3 is hydroxy, a linear or branched C1-C4-alkoxy group or halogen;
- ii. Amidation of the fatty acid or fatty acid derivative of the formula XCOR3, with an N-alkyl- or aryl-glucamine in a polar protic solvent in presence of a base catalyst.
Dependencies are inferred from the claim text.