Catalyst traditional transesterification method is mainly used on inorganic acids, organic acids or acid salts thereof, the advantage of cheaper prices. But they have a strong corrosive methacrylate offer for equipment, equipment and operating conditions more stringent requirements. And the long reaction time, side effects and more serious waste, easy to make product color darker. Such catalysts in the transesterification method is gradually being phased out. Non-acidic catalyst is the new direction of development in recent years. Its main feature is no corrosion, good quality, light color, less side effects, relatively mild reaction conditions. For now, the organic tin titanate compound with an alkali metal alkoxide is an ideal catalyst for the transesterification method, as long as the solution to the problem recycle reuse of methyl methacrylate, in the industrial production in the future will be widely used. [3] 3. Propylene route propylene, carbon monoxide and methanol carbonylation reaction of methyl 2-methoxy isobutyl methacrylate quotes, and then decomposed into methyl methacrylate and methanol by hydrolysis reaction. The oxidation of isobutyraldehyde to step heteropolyacids and salts thereof as a catalyst, generated methacrylic acid by oxidation of isobutyraldehyde step, methacrylic acid and then esterified with methanol to methyl methacrylate. Hebei Hengshui MMA (methyl methacrylate) _ _ Xiang dry chemical (certified merchants) by Andrew dry Jinan Chemical Limited. Jinan Cheung Dry Chemical Co. (www.xiangqianhuagong.com) (www.dilunyierchun.com) is specialized in the "glycol" enterprise, the company of "honesty, hard service" concept, to provide you with the most quality products and services. Welcome to inquire! Contact: Mr. You can also access (www.dilunyierchun.com/supply_details_40517280.html), for more information about the company.