Emulsion breaker
AssigneeBaker Hughes Incorporated
InventorHarold L. Becker
Life of this patent
Estimating the term…
Abstract
This invention provides acrylate polymers having at least two different ester groups. The ester groups are selected from the following: a) an aralkyl group; b) a linear alkylether group; c) a polyethoxylated alkylaryl group; and d) a polyethoxylated alkyl group, with the proviso that at least one of said ester groups is selected from b) or d). Processes for preparing such polymers and processes for breaking emulsions with these acrylate polymers are also provided.
Claims20
An acrylate polymer having at least two different ester groups selected from the group consisting of:
- a) an aralkyl group;
- b) a linear alkylether group;
- c) a polyethoxylated alkylaryl group;
- and
- d) a polyethoxylated alkyl group,
- with the proviso that at least one of said ester groups is selected from b) or d).
A process for preparing acrylate polymers, which process comprises
- I) bringing together, in a liquid organic medium, at least one acrylic acid, and at least two monomeric species selected from the group consisting of:
- A) an aralkyl monoalcohol,
- B) a linear alkylether monoalcohol,
- C) a polyethoxylated alkylaryl monoalcohol, and
- D) a polyethoxylated alkyl monoalcohol,
- with the proviso that at least one of said monomeric species is selected from B) or D), to form a first reaction mixture, and heating said first reaction mixture to form a prepolymerization mixture;
- or bringing together, in a liquid organic medium, at least two monomeric species selected from the group consisting of:
- A) an acrylated derivative of an aralkyl monoalcohol,
- B) an acrylated derivative of a linear alkylether monoalcohol,
- C) an acrylated derivative of a polyethoxylated alkylaryl monoalcohol, and
- D) an acrylated derivative of a polyethoxylated alkyl monoalcohol,
- with the proviso that at least one of said monomeric species is selected from B) or D), to form a prepolymerization mixture;
- and
- II) bringing together at least one free radical initiator and at least a portion of the prepolymerization mixture from I), to form a polymerization reaction mixture, and heating said polymerization reaction mixture to a temperature of at least about 60° C., to form an acrylate polymer.
Dependencies are inferred from the claim text.