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para-Methoxymethamphetamine (PMMA), also known as 4-methoxy-N-methylamphetamine (4-MMA), is a serotonergic drug of the amphetamine family related to para-methoxyamphetamine (PMA). It is the 4- methoxy analogue of methamphetamine .
Poly(methyl methacrylate) (PMMA) is a synthetic polymer derived from methyl methacrylate. It is a transparent thermoplastic, used as an engineering plastic. PMMA is also known as acrylic, acrylic glass, as well as by the trade names and brands Crylux, Hesalite, Plexiglas, Acrylite, Lucite, and Perspex, among several others .
Poly(methyl acrylate) (PMA) is a family of organic polymers with the formula (CH 2 CHCO 2 CH 3) n.It is a synthetic acrylate polymer derived from methyl acrylate monomer. The polymers are colorless.
Download as PDF; Printable version; In other projects ... move to sidebar hide. PMMA may refer to: para-Methoxymethamphetamine, a stimulant drug; Philippine Merchant ...
It has better thermal stability, higher resistance to crazing when exposed to solvents, wider thermoforming range than extruded acrylic. Cast acrylic has a better ability to be reworked hot and it is known for its superior surface finish and optical properties.
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The coke is easily removed and catalyst activity and selectivity restored by controlled, in-situ regeneration. The reactor product stream is separated in a primary distillation so that a crude MMA product stream, free from water, MeP and formaldehyde, is produced. Unreacted MeP and water are recycled via the formaldehyde dehydration process.
In addition, the rate constant of propagation (kp) during free radical polymerization of methacrylic acid is dependent on the monomer concentration. Using pulsed layer polymerization size-exclusion chromatography techniques, it was determined that there is a minor decrease in kp for partially ionized MAA as monomer concentration increases while ...