Use of sulfated ethoxylated c 8-11 branched alkanols in emulsion polymerization and method for preparing polymer latex

Sulfated ethoxylated C8-11 branched alkanols are used as anionic surfactants in emulsion polymerization to produce polymer latexes with high or ultra-high solid content, addressing challenges in particle size and viscosity, and achieving improved stability and handling characteristics.

WO2025060973A1 Publication Date: 2025-03-27BASF SE +1
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Patent Information

Application Number
PCT/CN2024/119014
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-11-08
Filing Date
2024-09-14
Publication Date
2025-03-27

AI Technical Summary

Technical Problem

Existing methods for producing polymer latexes with high or ultra-high solid content face challenges in controlling particle size, particle size distribution, and viscosity, which complicates handling and application.

Method used

The use of sulfated ethoxylated C8-11 branched alkanols as anionic surfactants in emulsion polymerization allows for the production of polymer latexes with high or ultra-high solid content, achieving low viscosity and large particle size with a narrow particle size distribution.

Benefits of technology

This approach results in polymer latexes with improved mechanical and storage stability, enabling easier handling and application while maintaining high solid content.

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Abstract

The invention relates to use of a sulfated ethoxylated C8-11 branched alkanol as an anionic surfactant in emulsion polymerization for producing a polymer latex, to a method for preparing a polymer latex by emulsion polymerization in the presence of an anionic surfactant selected from sulfated ethoxylated C8-11 branched alkanols, and also to the polymer latex obtained or obtainable by the emulsion polymerization using an anionic surfactant selected from sulfated ethoxylated C8-11 branched alkanols.
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