Methyl methacrylate china(MMA)
is an important organic chemical raw material, which is mainly used in the production of polymethyl methacrylate china(PMMA)
- organic glass, an important thermoplastic material which is developed earlier. Plexiglass is widely used in road signs, billboards, sanitary wares and other fields because of its high transparency, excellent weather resistance, good processing performance and high chemical corrosion resistance. At present, most of the MA in the market is used to produce PMMA polymer materials, while PMMA is widely used to manufacture advanced optical lenses, advanced optical instrument lenses, automotive taillights, liquid crystal displays, light guide panels and other products. In addition, methyl methacrylate china
is also used in coatings, adhesives, lubricants, sizes, printing and dyeing aids and insulation, edge filling materials, etc. These applications stimulate the explosive growth of MMA and PMMA demand, especially in China, which has good market prospects.
At present, the consumption structure of MMA in China is as follows: the demand of PMMA for MMA accounts for 64.5% of total consumption, surface coatings for 13.0%, ACR and MBS for 12.5%, and the rest (including various adhesives, waterproofing agents, synthetic rubber modifiers, etc.) accounts for 10.0%. At present, the production route of MMA in China is concentrated on acetone cyanohydrin process, and there is still a lot of room for optimization in terms of production process. Main synthetic methods: acetone cyanohydrin method (ACH method), isobutene oxidation method, ethylene carbonylation method.
Because PMMA is easy to cure and shrink, it has poor flexibility and impact resistance at low temperature, which affects its popularization and application. In order to improve the low temperature flexibility and impact resistance of PMMA waterproof coatings, polyurethane resin with excellent flexibility is introduced into PMMA materials, which makes PMMA waterproof coatings have a great degree of freedom in functional design and can basically meet all kinds of painting requirements, thus greatly expanding the application field of PMMA waterproof coatings.