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Polymethyl methacrylate (poly(methylmethacrylate), PMMA for short), also known as acrylic, acrylic (English Acrylic) or plexiglass, Lucite (commodity name), is often called Agari glue in Hong Kong, China. It has the advantages of high transparency, low price, easy mechanical processing, etc. It is a commonly used glass substitute material.
The monomer of polymethyl methacrylate is methyl methacrylate (MMA, acrylic monomer).
It is mainly used as monomer of organic glass and also used to make other plastics, coatings, etc. Methyl methacrylate is the intermediate of bactericide sclerotinoma.; This product is mainly used as the monomer of polymethyl methacrylate (plexiglass), and it is also co-polymerized with other vinyl monomer to obtain products with different properties, also..
1. Acetone cyanohydrin route acetone cyanohydrin reacts with sulfuric acid to generate methacrylamide sulfate. After hydrolysis, methyl methacrylate crude product is obtained by transesterification with methanol, and then the finished product is obtained by salting out, crude distillation and distillation. Usually acetone cyanohydrin is made from sodium cyanide. Raw material consumption quota: methyl ketone cyanohydrin 1100 kg/t, sulfuric acid 2100 kg/t, methanol 490 kg/t. 2. Isobutene route Isobutene is oxidized by air in the presence of molybdenum catalyst. Isobutene is oxidized to methacrolein first, and then further oxidized to methacrylic acid. Methyl acrylic acid and methanol are reacted to obtain methyl methacrylate. Recently, another one-step oxidation process has been developed. Isobutene is directly oxidized to methacrylic acid by using N204 as oxidant and k2co 3 or MnO 2 as catalyst. Then, methanol was used for further transesterification. 3. Propylene route propylene, carbon monoxide and methanol undergo carbonylation reaction to generate methyl 2-methoxyisobutyrate, and then decompose into methyl methacrylate and methanol through hydrolysis reaction. 4. Isobutyraldehyde one-step oxidation using heteropolyacid and its salts as catalyst, methacrylic acid is produced by one-step oxidation of isobutyraldehyde, and methacrylic acid is then reacted with methanol to methyl methacrylate.
S24: avoid contact with skin.
S37: use appropriate protective gloves.
S46: in case of accidental swallowing, seek doctor's advice immediately (display product container or label).
R11: very flammable. R43: skin contact will produce allergic reactions. R37/38: it can stimulate respiratory tract and skin.
UN1247
The warehouse is ventilated for cryodrying and stored separately from oxidant and acid. It is not suitable for long storage to prevent polymerization.
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Traders: Chemwin
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On May 16, 2022, the market price reference price of methyl methacrylate (MMA) was 12400 yuan/ton
May 17, 2022 methyl methacrylate (MMA) market price reference price in East China is 12350 yuan/ton
On May 18, 2022, the market price reference price of methyl methacrylate (MMA) was 12400 yuan/ton
On May 20, 2022, the market price reference price of methyl methacrylate (MMA) in East China was 12400 yuan/ton
Market Price Analysis of methyl methacrylate (MMA) on May 23, 2022
On May 24, 2022, the market price reference price of methyl methacrylate (MMA) in East China was 12300 yuan/ton
On May 25, 2022, methyl methacrylate (MMA) the market price reference price in East China was 12300 yuan/ton, while the market price reference price in South China was 13000 yuan/ton
On May 26, 2022, the market price reference price of methyl methacrylate (MMA) in East China was 12300 yuan/ton
On May 27, 2022, the market price reference price of methyl methacrylate (MMA) in East China was 12300 yuan/ton, compared with 12300 yuan/ton on May 26, there was no adjustment.
MMA (methyl methacrylate) industry value analysis, factors affecting cost under different production processes
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