Polyacrylates
Polyacrylates (polyacrylic acid esters ) are polymers made from esters of acrylic acid ( acrylic acid esters ) . They are plastics that are used , among other things, in paints and as a dispersant for adhesives .
They are produced by radical chain polymerization in aqueous solutions, emulsions ( emulsion polymerization ) or by bulk polymerization with an end product as a powder.
The polyacrylates are often produced as copolymers , for example with esters of methacrylic acid . In general, the most varied properties of these polymers can be adjusted within a very wide window by copolymerization. The polyacrylates can be divided into high and low molecular weight polymers.
Polyacrylate rubber is a synthetic rubber that consists of acrylic acid alkyl ester ( ethyl or butyl ester) and is resistant to heat and mineral oils .
Monomers for polyacrylates
The following is a list of monomers that are used in polyacrylates for use in varnishes and paints.
Monomers as acrylic esters without any further functional group:
- Methyl acrylate
- Ethyl acrylate
- n-butyl acrylate
- iso-butyl acrylate
- tert-butyl acrylate
- 2-ethylhexyl acrylate
- Lauryl acrylate
- Stearyl acrylate
- Benzyl acrylate
Monomers as methacrylic esters without any further functional group:
- Methyl methacrylate
- Ethyl methacrylate
- Isopropyl methacrylate
- n-butyl methacrylate
- iso-butymethacrylate
- tert-butymethacrylate
- Neopentyl methacrylate
- 2-ethylhexyl methacrylate
- Lauryl methacrylate
- Stearyl methacrylate
- Cyclohexyl methacrylate
- Benzyl methacrylate
Monomers with other functional groups:
- 2-hydroxyethyl acrylate
- 2-hydroxypropyl acrylate
- 2-hydroxyethyl methacrylate
- 2-hydroxypropyl methacrylate
- 1,4-butanediol monoacrylate
- Acrylic acid
- Methacrylic acid
- N, N-dimethylamino-ethyl acrylate
- N, N-dimethylamino-ethyl methacrylate
- Acrylamide
- Methacrylamide
- Glycidyl methacrylate
Monomers which are neither based on acrylic acid nor methacrylic acid, but are used in polyacrylate resins (comonomers):
See also
literature
- Hans Domininghaus: Plastics: Properties and Applications . Springer, Berlin 2007 (7th edition). ISBN 978-3540724001