In practice, there are few acrylic acid and methyl acrylic monomer polymerization of general emulsion copolymer, which can copolymerization of acrylic acid and methyl acrylate monomers, monomer, can also be a total of two yuan or more between the conjugate dienes or other copolymerization of acrylic acid and methacrylic acid monomer and vinyl, to improve the performance of polymer emulsion by copolymerization, emulsion polymer and polymer emulsion or endowed with special function, to adapt to the needs of a specific application.
At present, there are many kinds of acrylic and methacrylic acid copolymer emulsion in various kinds, different performance and wide use, which are mainly the following：
1.Pure acrylic emulsion: a copolymer emulsion of acrylic acid and methyl acrylic monomers were prepared between emulsion copolymerization of said pure acrylic emulsion polymer acrylic emulsion has good mechanical properties, weather resistance, aging resistance and film-forming properties, has been widely used in coatings, adhesives, fabric finishing agent, pressure-sensitive adhesive, impact modifier, paper processing technology.
2.Styrene acrylic emulsion: a class of copolymer of acrylic acid and methyl acrylic acid monomer and styrene were prepared by emulsion copolymerization of said styrene acrylic emulsion, styrene as chain introduced in pure acrylic polymer, to improve the water resistance, alkali resistance, hardness, anti fouling performance, mainly used in coatings, adhesives and paper products processing.
3.Vinyl acetate acrylic emulsion: a class of emulsion called ethylene propylene emulsion, which is prepared by emulsion copolymerization of vinyl acetate and acrylic acid and methacrylic monomers. These emulsion copolymers are significantly superior to vinyl acetate homopolymers in water resistance, cold resistance and mechanical properties, mainly for interior wall coatings, paper coating, laminating adhesives, sealant and other technical fields.
4.Silicone acrylic emulsion: a kind of emulsion composed of acrylic acid and methyl acrylic acid monomer and vinyl silicone monomer were prepared by emulsion copolymerization of said silicone acrylic emulsion, the silicone link introduced in pure acrylic copolymer, the copolymer with excellent weather resistance, aging resistance, water resistance, alkali resistance and cold resistance, widen the temperature range of pure acrylic polymers, eliminates the drawbacks of pure acrylic polymer "hot sticky cold brittle". This kind of copolymer emulsion can be used in the manufacture of high-grade exterior wall coatings, and can also be used in many fields, such as leather finishing, fabric finishing and so on.