Olefin-acrylate polymers in refinery and oilfield applications

Patent metadata

Field	Value
Publication number	US-9670343-B2
Application number	US-201314650375-A
Country	US
Kind code	B2
Filing date	Dec 4, 2013
Priority date	Dec 10, 2012
Publication date	Jun 6, 2017
Grant date	Jun 6, 2017

Abstract

The present invention relates to materials useful for lowering the pour point of wax-containing mixtures of liquid hydrocarbons, as well as compositions of and methods for preparing the same. More particularly, this invention relates to the use in liquid hydrocarbons of OLAC compositions containing units derived from (i) hydrocarbyl(meth)acrylic acid derivatives and (ii) ethylenically unsaturated aliphatic Nα-olefin monomers having up to 50 carbon atoms. The OLAC compositions are useful for modifying the fluidity and flow characteristics of liquid hydrocarbons, and more particularly, for improving the pipeline pumpability of liquid hydrocarbons.

First claim

What is claimed is:

1. A composition comprising (a) at least one OLAC composition consisting of a reaction product of (a)(1) at least one alpha olefin, and (a)(2) at least one hydrocarbyl (meth)acrylic acid derivative, wherein the derivative is at least one amide, and (b) a hydrocardbon solvent, wherein the reaction product of (a) comprises from about 1 to about 49 wt % of the at least one alpha olefin of (a1) and from about 51 to about 99 wt % of the at least one hydrocarbyl (meth)acrylic acid derivative of (a2).

2. The composition of claim 1 wherein the reaction product comprises at least one of a block, alternating, or random copolymer.

3. The composition of claim 1 wherein the at least one alpha olefin (a1) comprises from 2 to about 50 carbon atoms.

4. The composition of claim 1 wherein the hydrocarbyl group of the at least one hydrocarbyl (meth)acrylic acid derivative of (a2) contains from 4 to about 50 carbon atoms.

5. The composition of claim 1 wherein the at least one hydrocarbyl (meth)acrylic acid derivative is an alkyl(meth)acrylic acid derivative, aminoalkyl(meth)acrylic acid derivative, aryl(meth)acrylic acid derivative, or combination thereof.

6. The composition of claim 3 wherein when the hydrocarbyl group of the hydrocarbyl (meth)acrylic acid derivative, comprises less than 16 carbon atoms, the at least one alpha olefin comprises greater than 16 carbon atoms.

7. The composition of claim 3 wherein when the at least one alpha olefin comprises less than 16 carbon atoms, the hydrocarbyl group of the hydrocarbyl (meth)acrylic acid derivative, comprises greater than 16 carbon atoms.

8. The composition of claim 1 wherein the derivative of the at least one hydrocarbyl (meth)acrylic acid derivative is at least one ester.

9. The composition of claim 1 wherein the derivative of the at least one hydrocarbyl (meth)acrylic acid derivative is a combination of at least one ester and at least one amide.

10. The composition of claim 1 wherein (a)(1) is a C18-22 olefin and (a)(2) is a C18-22 alkyl (meth)acrylate.

11. The composition of claim 1 , further comprising (c) a liquid hydrocarbon.

12. A method of depressing the pour point of a liquid hydrocarbon composition comprising adding to the liquid hydrocarbon composition an OLAC composition suitable to depress the pour point of the liquid hydrocarbon composition consisting of a reaction product of (a1) at least one alpha olefin, and (a2) at least one hydrocarbyl (meth)acrylic acid derivative, wherein the derivative is at least one amide, and wherein the reaction product of (a) comprises from about 1 to about 49 wt % of the at least one alpha olefin of (a1) and from about 51 to about 99 wt % of the at least one hydrocarbyl (meth)acrylic acid derivative of (a2).

Assignees

• Lubrizol Corp

Inventors

• Mastrangelo Antonio
• Smith Timothy R
• Kolp Christopher J
• Johnson John R

Classifications

• C10L1/1963 Primary

  mono-carboxylic · CPC title

• C10L10/16

  Pour-point depressants · CPC title

• C08L23/0869 Primary

  with unsaturated acids, e.g. [meth]acrylic acid; with unsaturated esters, e.g. [meth]acrylic acid esters · CPC title