Emulsion Polymerisation

Emulsion Polymerisation is a method in which polymers are prepared. The process of emulsion polymerisation consists essentially of forming an emulsion of a monomer, or a mixture of co-monomers, in an aqueous medium by the use of emulsifiers and then to polymerise the system in a controlled way with the use of an initiator.

 

The selection of suitable emulsifiers is complex and in some cases, anionics or nonionics can be used singularly but in most cases, an anionic/nonionic system is preferred as a way of increasing the stabilisation of the latex.

 

After many years of practical experience, we can provide starting surfactant recommendations for each polymer type listed. In most cases, the polymer chemist will need to evaluate the emulsifiers types, additional levels and ratios in order to obtain the required performance.

Vinyl Acetate Homopolymer (PVA)

 

Polyvinyl acetate homopolymer emulsions, often called PVAc or occasionally PVA homopolymers. Polyvinyl acetate is synthesized by the emulsion polymerisation of vinyl acetate monomer (VAM). PVAc emulsions are best known for their use in wood glues or school glues due to their strong adhesion properties.

 

However, PVAc emulsions are also widely used in many industrial and consumer end-use applications:

  • Water-based adhesives

  • Carpet backings

  • Paper and paperboard coatings

  • Carpet backings

  • Building and construction products

Lanphos PS10
Kemsurf OS38
Kemsurf EM30
Lanspec EMP404

Vinyl Acetate - Acrylic

Kemsurf SBE30
Kemsurf ESD60
Kemsurf OT60
Lanspec EMP102
Lanspec EMP906
Lanspec EMP208

Vinyl Acetate - VeoVa

Kemsurf ESD
Kemsurf ESD60
Lanpsec HSR

Vinyl Chloride (PVC) & copolymers

Kemsurf SBE30
Kemsurf DSA

Acrylamide

Lansurf SMO

Styrene

Kemsurf SBE30
Kemsurf DSA
Kemsurf EM9
Kemsurf EM30

Styrene Acrylics

Styrene acrylic copolymer dispersions are used in a variety of industrial and consumer end-use applications, including:

 

  • Architectural decorative coatings

  • Adhesives and fillers

  • Glass fibre binder applications, such as wall coverings

Lanphos PS10
Lanphos PS6-25A
Kemsurf OS38

Styrene - Butadiene

Kemsurf SBE30

Acrylonitrile - Butadiene - Styrene

Kemsurf SBE30
Kemsurf DSA

Acrylic Monomers

Kemsurf ESD
Kemsurf ESD60
Kemsurf DSA
Kemsurf EM9
Kemsurf EM30
Lanspec EMP208
Lansurf DPE808

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