Methyl Methacrylate


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methyl methacrylate

[¦meth·əl mə′thak·rə‚lāt]
(organic chemistry)
CH2C(CH3)COOCH3 A flammable, colorless liquid, soluble in most organic solvents but insoluble in water; used as a monomer for polymethacrylate resins.

Methyl Methacrylate

 

a methyl ester of methacrylic acid, CH2 = C(CH3) — COOCH3; a colorless liquid. Boiling point, 101°C; density, 0.936 g/cm3 at 20°C; solubility in water at 30°C, 1.5 percent (by weight). Freely soluble in alcohol and ethyl ether.

Methyl methacrylate hydrolyzes to form methacrylic acid, and upon heating with alcohols (with strong acids serving as catalysts), ester interchange takes place. This process is used in industry to manufacture several other methacrylic acid esters— for example, butyl methacrylate. Methyl methacrylate combines with chlorine, hydrogen, hydrogen bromide, amines, ammonia, mercaptans, amides, aliphatic nitro compounds, and hydrocyanic acid along its double bond. It polymerizes readily, yielding polymethyl methacrylate. Stabilizers (0.005–0.5 percent), such as hydroquinone and copper, are added to methyl methacrylate to prevent polymerization during storage.

Methyl methacrylate is usually prepared industrially from acetone and hydrocyanic acid, via acetone cyanohydrin, (CH3)2C(OH)—CN. It has a systemic, narcotic effect, and its vapors irritate the mucous membranes; the maximum permissible level in air is 0.05 mg per liter. Methyl methacrylate is mainly used in the manufacture of Plexiglas.

REFERENCES

Vaculik, P. Khimiia monomerov, vol. 1. Moscow, 1960. (Translated from Czech.)
Sorenson, W., and T. Campbell. Preparativnye melody khimiipolimerov. Moscow, 1963. (Translated from English.)

methyl methacrylate

A tough, rigid, transparent acrylic plastic having good resistance to common solvents and acids; subject to crazing.
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Methyl methacrylate (MMA) is one of the main components of acrylic resins used in the coating industry.
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Summary: High demand upsurge for commercial high polymers such as PMMA (poly methyl methacrylate), alternatively referred to as acrylic glass is expected to reflect enormous growth potential in methyl methacrylate market.
Methyl methacrylate is one of the most prominent esters of methacrylic acid.
This tender is for the supply and application of high friction surfacing (epoxy type 1 and methyl methacrylate (mma)) in torbay, devon.Typical sites are the approaches to signal controlled junctions, roundabouts and pedestrian crossings subject to a heavy flow of vehicles and maintenance of exi...Ucted to undertake work to traffic calming schemes, cycle paths, demarcation of hatched areas, etc.It is anticipated that the quantity of work to be undertaken through this contract will be in the order of 20,000 m, with up to 50% of this work being carried out outside of normal working hours.
* A Methyl Methacrylate (MMA) plant * A Poly methyl methacrylate (PMMA) plant
Evonik Industries, one of the leading suppliers of methacrylate chemistry, is increasing the production capabilities of its methyl methacrylate plants throughout the world, to meet the rising demand.