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EP1033166A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Surfactant composition for emulsion polymerization

Assignee: Kao Corp
•
Filing: 2000-03-03
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Granted: —
•
Expires: 2020-03-03
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Abstract

Abstract The present invention provides a surfactant composition for emulsion polymerization of which stability upon polymerization and mechanical stability of emulsion are good, in which particle has a small size, and of which viscosity may be made to low. The surfactant composition for emulsion polymerization comprises a compound (a) represented by the formula (I) and having a critical micelle concentration (CMC) in the range of from not less than 0.007 mol L -1 to not more than 0.1 mol L -1 and a compound (b) represented by the formula (II) and having a CMC in the range of from not less than 1 × 10 -5 mol L -1 to less than 0.007 mol L -1 , as essential components, and the molar ratio of the components (a) to (b) in terms of (a)/(b) is from 5/95 to 75/25: R 1 O-(A 1 O) m -SO 3 M 1 R 2 O-(A 2 O) n -SO 3 M 2 (in the formulae, R 1 and R 2 are monovalent aliphatic hydrocarbon groups; A 1 and A 2 are alkylene groups having 2 to 4 carbons; m and n are numbers from 1 to 50; and M 1 and M 2 are monovalent cations).

Inventors

  • 👤 Takayuki Kao Corporation Ikenaga
  • 👤 Atsuhito Kao Corporation MORI
  • 👤 Hiroyuki Kao Corporation Aizawa
  • 👤 Hiroki Kao Corporation SAWADA
  • 👤 Yasuo Kao Corporation ISHII
  • 👤 Yoshinori Kao Corporation Mitsuda

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-03 04:09
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/12; C08F2/16; C08F2/22; C08F2/24; C08F2/26; C09; C09K; C09K23/00; C09K23/02; C08F220/00; C08F220/02; C08F220/10; C08F220/12; C08F220/16; C08F220/18; C08F220/1804; Y; Y10; Y10S; Y10S524/00; Y10S524/91; Y10S524/911

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 235 words
A surfactant composition for emulsion polymerization, comprising a compound (a) represented by the formula (I) and having a critical micelle concentration (CMC) in the range of from not less than 0.007 mol L -1 to not more than 0.1 mol L -1 and a compound (b) represented by the formula (II) and having a CMC in the range of from not less than 1 × 10 -5 mol L -1 to less than 0.007 mol L -1 , as essential components, at the molar ratio of the components (a) to (b) in terms of (a)/(b) being from 5/95 to 75/25: R 1 O-(A 1 O) m -SO 3 M 1 R 2 O-(A 2 O) n -SO 3 M 2 in which each of R 1 and R 2 is a monovalent aliphatic hydrocarbon group; each of A 1 and A 2 is an alkylene group having 2 to 4 carbon atoms; each of m and n shows the average molar number of an alkylene oxide added and is a number selected from 1 to 50; each of M 1 and M 2 is a monovalent cation; and each of plural A 1 's and A 2 's may be same as or different from another of plural A 1 's and plural A 2 's, given that the number of A 1 's is m and the number of A 2 's is n.
Claim 2
Dependent Claim 66 words
The composition as claimed in Claim 1, in which the compound (a) has a critical micelle concentration (CMC) in the range of from not less than 0.01 mol L -1 to not more than 0.06 mol L -1 ; the compound (b) has a CMC in the range of from not less than 0.001 mol L -1 to not more than 0.005 mol L -1 .
Claim 3
Dependent Claim 22 words
The composition as claimed in Claim 1, in which each of m and n is a number selected from 3 to 30.
Claim 4
Dependent Claim 20 words
The composition as claimed in Claim 1, in which each of A 1 and A 2 is an ethylene group.
Claim 5
Dependent Claim 18 words
The composition as claimed in Claim 1, in which the ratio of (a)/(b) ranges from 10/90 to 50/50.
Claim 6
Dependent Claim 19 words
A process for emulsion polymerization, polymerizing unsaturated monomer(s) in the presence of the composition as defined in Claim 1.
Claim 7
Dependent Claim 18 words
Use of the composition as defined in Claim 1 as an emulsifier for emulsion polymerization of unsaturated monomer(s).

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