Anionic surfactant compositions and use thereof

Patent metadata

Field	Value
Publication number	US-9555385-B2
Application number	US-201314761661-A
Country	US
Kind code	B2
Filing date	Mar 8, 2013
Priority date	Mar 8, 2013
Publication date	Jan 31, 2017
Grant date	Jan 31, 2017

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—O—(C 3 H 6 O) x (C 2 H 4 O) y —S0 3 M, wherein R, 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—O—(C 3 H 6 O) x (C 2 H 4 O) y —SO 3 M  (I)

wherein x is a real number within a range of from 0.5 to less than 4; y is a real number within a range of from 2 to 15; M is a cation; and R is a mixture of seed-oil based linear alkyl moieties with an alkyl moiety distribution as follows wherein each wt % is based upon weight of all alkyl moieties present in the distribution and all wt % for each distribution total 100 wt %:

Carbon Atoms in Alkyl Moiety
Amount

C 6
 0 wt %-40 wt %

C 8
20 wt %-40 wt %

C 10
20 wt %-45 wt %

C 12
10 wt %-45 wt %

C 14
 0 wt %-40 wt %

C 16 -C 18
  0 wt %-15 wt %;

a nonionic alkyl alkoxylate of formula II:
R—O—(C 3 H 6 O) x (C 2 H 4 O) y —H  (II)

wherein x is a real number within a range of from 0.5 to less than 4; y is a real number within a range of from 2 to 15; and R is a mixture of seed-oil based linear alkyl moieties with an alkyl moiety distribution as follows wherein each wt % is based upon weight of all alkyl moieties present in the distribution and all wt % for each distribution total 100 wt %:

Carbon Atoms in Alkyl Moiety
Amount

C 6
 0 wt %-40 wt %

C 8
20 wt %-40 wt %

C 10
20 wt %-45 wt %

C 12
10 wt %-45 wt %

C 14
 0 wt %-40 wt %

C 16 -C 18
    0 wt %-15 wt %; and

water,
wherein the amount of the alkyl alkoxylate sulfate of formula I is from 20 to 75% by weight, the amount of the nonionic alkyl alkoxylate of formula II is from 0.1 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.

2. The surfactant composition claim 1 wherein x in formula I and formula II is independently a real number less than or equal to 3.

3. The surfactant composition of claim 1 , wherein x in formula I and formula II is independently a real number within a range of from 2-3.

4. The surfactant composition of claim 1 , wherein y in formula I and formula II is independently a real number within a range of from 2-10.

5. The surfactant composition of claim 1 , wherein x of formula I and formula II is independently from 2.5 to 3 and the alkyl moiety is independently as follows:

Carbon Atoms in Alkyl Moiety
Amount

C 6
 0-36%

C 8
22-40%

C 10
27-44%

C 12
14-35%

C 14
 5-13%

C 16 -C 18
 0-5%.

6. The surfactant composition of claim 1 , further comprising a nonionic surfactant of formula III:
R 1 —O-(AO) z —H  (III)

wherein R 1 is linear or branched C 6 -C 24 alkyl, AO at each occurrence is ethyleneoxy, propyleneoxy, butyleneoxy (—CH 2 —CH(CH 2 CH 3 )—O—), or random or block mixtures thereof, and z is from 1 to 50.

7. A method of emulsion polymerization comprising:
combining an alkyl alkoxylate sulfate surfactant composition, water, and one or more monomers; and
heating the alkyl alkoxylate sulfate surfactant composition, water, and one or more monomers,
wherein the surfactant composition includes:
an alkyl alkoxylate sulfate of formula I:
R—O—(C 3 H 6 O) x (C 2 H 4 O) y —SO 3 M  (I)

wherein x is a real number within a range of from 0.5 to less than 4; y is a real number within a range of from 2 to 15; M is a cation; and R is a mixture of seed-oil based linear alkyl moieties with an alkyl moiety distribution as follows wherein each wt % is based upon weight of all alkyl moieties present in the distribution and all wt % for each distribution total 100 wt %:

Carbon Atoms in Alkyl Moiety
Amount

C 6

Assignees

• Dow Global Technologies Llc

Inventors

• Shen Cheng
• Mu Jianhai
• Wang Xiaohua

Classifications

• C08L33/08

  Homopolymers or copolymers of acrylic acid esters · CPC title

• C11D1/29

  Sulfates of polyoxyalkylene ethers · CPC title

• C08F2/26

  anionic · CPC title

• C08L33/02

  Homopolymers or copolymers of acids; Metal or ammonium salts thereof · CPC title

• C11D1/83

  Mixtures of non-ionic with anionic compounds · CPC title