(hydroxyalkyl)aminophenol polymers and methods of use
AssigneeEcolab USA Inc.
InventorsAshish Dhawan, Carter M. Silvernail
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Abstract
Disclosed herein are polymers formed by the condensation of bis (hydroxycarbyl)-aminophenolic compounds with aldehydes. The condensation polymers include one or more repeat units having bis (hydroxycarbyl) amino functionality. The polymers are useful as antifoulants, antipolymerants, rheology modifiers, dehazers, polymerization retardants, surfactants, or a combination of these in one or more industrial process streams.
Claims19
A method of preventing fouling in an industrial process stream, the method comprising adding 0.1 ppm to 10,000 ppm of a polymer comprising a repeat unit having the structure of Formula I, Formula II, or a combination thereof to the industrial process stream,
- wherein R1 and R2 are —(CR6R7)n(CHOH)(CH2)p(O)qR8;
- R3 is H, alkyl, aryl, benzyl, or aralkyl;
- R4 and R5 are independently H, or C1-C22 alkyl, —OH, or NR1R2;
- R6 and R7 are independently H or alkyl;
- R8 is C1-C24 linear, branched, or cyclic alkyl, aryl, or aralkyl;
- R9 is H, alkyl, aryl, benzyl, or aralkyl, optionally substituted with an alkyl group, alkoxy group, or hydroxyl group;
- n is an integer between 1 and 12;
- p is 0 or an integer between 1 and 12;
- and q is 0 or 1.
Dependencies are inferred from the claim text.