CHEMISTRY OF ACRYLIC MONOMERS

24 июня, 2015

Malyar

TABLE 1-4: THE MAJOR ACRYLIC MONOMERS

Monomer Chemical Formula Homopolymer

Acrylonitrile	CH2=CH—CN	97
Acrylic acid	CH2=CH —COOH	106
Methyl acrylate	CH^CH —COOCHj	10
Ethyl acrylate	CH2=CH— COOC2H5	-24
Butyl acrylate	CH2=CH —COOC4H9	-54
2 ethyl hexyl acrylate	CH2=CH—COOC8H17	-70
Methoxyethyl acrylate	CH^ CH — COOCH2CH2OCH3	-33
Dimethylamino acrylate	CH2= CH — COOCH2CH2N(CH3)2	-38
Methacrylic acid	CH2=C — COOH 2 I	228
	CH3
Methyl methacrylate	CH,= C — COOCH, I CH3	105
Ethyl methacrylate	CH,= C —COOC2H5 I CH3	65
Butyl methacrylate	CH2=C — COO—CH2—CH2—CH2— CH3	CH3 20
Isobutyl methacrylate	CH2=C —COO —CH2—CH—CH3 2 \| 2 \| 3 CH3 CH3	53
2-ethyl hexyl methacrylate	CH2=C —COOC8H17 CH3	-10

Of particular importance in surface coating applications are the two series of related monomers derived from acrylic acid and methacrylic acid. These monomers are termed “acrylates” and “methacrylates” respectively and polymers derived from either species are known collectively as acrylic resins. Typical acrylate and methacrylate monomers are shown in the table above.

Acrylic esters have the common structure:

CH2=CH

COR

Figure 1-21

Whilst methacrylic esters have the common structure:

CH2=C — CH3

COR

Figure 1-22

Typical examples are:

Butyl Acrylate Butyl Methacrylate

Figure 1-23

Various types of functionality can be built into acrylic and methacrylic esters which can be introduced into the final acrylic polymer. Typical functionality includes hydroxyl, carboxyl, amide and epoxy groups.

Опубликовано в рубрике Waterborne & Solvent Based Acrylics and their End User Applications

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Лако-красочные материалы — производство

Технологии и оборудование для изготовления красок, ЛКМ

CHEMISTRY OF ACRYLIC MONOMERS

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