Anionic surfactant compositions and use thereof

Patent metadata

Field	Value
Publication number	US-10016733-B2
Application number	US-201214424068-A
Country	US
Kind code	B2
Filing date	Sep 29, 2012
Priority date	Sep 29, 2012
Publication date	Jul 10, 2018
Grant date	Jul 10, 2018

Abstract

Provided are surfactant compositions that are useful as alternatives to alkylphenol ethoxylates (APEs) type surfactants in emulsion polymerization. The surfactant compositions comprise: an alkyl alkoxylate sulfate of formula (I): R 1 O—(CH 2 CH(R 2 )—O) x —(CH 2 CH 2 O) y —SO 3 M wherein R 1 , R 2 , x, y, and M are as defined herein.

First claim

What is claimed is:

1. A surfactant composition comprising an alkyl alkoxylate sulfate of formula I:
R 1 O—(CH 2 CH(R 2 )—O) x —(CH 2 CH 2 O) y —SO 3 M  (I)

wherein R 1 is linear or branched C 4 -C 10 alkyl;
R 2 is CH 3 or CH 3 CH 2 ;
x is a real number from 1to 11;
y is a real number from 1 to 20; and
M is an alkali metal or NH 4 ; the surfactant composition further comprising a nonionic alkyl alkoxylate of formula II:
R 1 O—(CH 2 CH(R 2 )—O) x —(CH 2 CH 2 O) y —H  (II)

wherein R 1 is linear or branched C 4 -C 10 alkyl;
R 2 is CH 3 or CH 3 CH 2 ;
x is a real number from 1 to 11; and
y is a real number from 1 to 20.

2. The surfactant composition of claim 1 further comprising water, and wherein the amount of the alkyl alkoxylate sulfate of formula I is from 20 to 70% by weight, the amount of the nonionic alkyl alkoxylate of formula II is from 1 to 30% by weight, and the amount of water is from 25 to 75% by weight, based on the total weight of the anionic alkoxylate of formula I, the nonionic alkyl alkoxylate of formula II, and the water.

3. The surfactant composition of claim 1 or 2 wherein R 1 in formula I and formula II is independently linear or branched C 6 -C 10 alkyl.

4. The surfactant composition of claim 1 , wherein R 1 in formula I and formula II is independently 2-ethylhexyl or 2-propylheptyl.

5. The surfactant composition of claim 1 , wherein x in formula I and formula II is independently from 4 to 6.

6. The surfactant composition of claim 1 , wherein y in formula I and formula II is independently from 1 to 11.

7. The surfactant composition of claim 1 , that is present in an emulsion polymerization formulation.

8. A method of use of the surfactant composition of claim 1 , comprising:
forming a styrene-butyl acrylate emulsion; and
adding the surfactant composition of claim 1 to the styrene-butyl acrylate emulsion as an emulsifier for emulsion polymerization.

Assignees

• Dow Global Technologies Llc

Inventors

• Shen Cheng
• Mu Jianhai
• Wang Xiaohua

Classifications

• B01F17/0092 Primary

  Operations & Transport · mapped topic

• C08G65/3344

  containing oxygen in addition to sulfur · CPC title

• C08G65/326

  containing sulfur · CPC title

• C08L71/02

  Polyalkylene oxides · CPC title

• C08L2205/02

  containing two or more polymers of the same C08L -group · CPC title