Surfactants derived from phenolic aldehydes
OwnerKevin Lassila, Michael Ulmaninventors
Life of this patent
Estimating the term…
Abstract
Surfactants derived from phenolic aldehydes include compounds according to formulas (I) and (II) wherein R is (CH2CH2O)xR4 or (C3H6O2)xR4. R1 and R2 are each hydrogen or C1-C20 hydrocarbyl moieties, provided that neither R1 nor R2 may be hydrogen when the compound is of formula (I). If the compound is according to formula (II) wherein n=0, one of R1 and R2 may further be C1-C20 alkoxymethylene while the other is H. The Z moiety is hydrogen, OR, or OR3, wherein R3 is hydrogen, methyl, ethyl or propyl; R4 is hydrogen, methyl or ethyl; x is an integer from 1 to 20; and n is 0 or 1. Compositions containing the surfactants, and methods of using the surfactants, are also disclosed.
Claims24
A composition comprising one or more compounds according to formula (I) or formula (II)
- wherein R is (CH2CH2O)xR4 or (C3H6O2)xR4;
- R1 and R2 are each independently selected from the group consisting of hydrogen and C1-C20 linear, cyclic, and branched alkyl, alkenyl, aryl, aralkyl, and alkaryl moieties, and wherein if the compound is according to formula (II) wherein n=0, one of R1 and R2 may further be C1-C20 alkoxymethylene and the other is H;
- Z is hydrogen, OR, or OR3, wherein R3 is selected from the group consisting of hydrogen, methyl, ethyl and propyl;
- R4 is selected from the group consisting of hydrogen, methyl and ethyl;
- x is an integer from 1 to 20;
- and n is 0 or 1;
- provided that neither R1 nor R2 may be hydrogen when the compound is of formula (I).
A method for reducing surface tension in a formulation, comprising adding to the formulation an effective amount of one or more compounds according to formula (I) or formula (II) sufficient to reduce an equilibrium surface tension of the formulation to a value less than 52 mN/m
- wherein R is (CH2CH2O)xR4 or (C3H6O2)xR4;
- R1 and R2 are each independently selected from the group consisting of hydrogen and C1-C20 linear, cyclic, and branched alkyl, alkenyl, aryl, aralkyl, and alkaryl moieties, and wherein if the compound is according to formula (II) wherein n=0, one of R1 and R2 may further be C1-C20 alkoxymethylene and the other is H;
- Z is hydrogen, OR, or OR3, wherein R3 is selected from the group consisting of hydrogen, methyl, ethyl and propyl;
- R4 is selected from the group consisting of hydrogen, methyl and ethyl;
- x is an integer from 1 to 20;
- and n is 0 or 1;
- provided that neither R1 nor R2 may be hydrogen when the compound is of formula (I).
Dependencies are inferred from the claim text.