Image:PMMA.png
Image:PMMA.png Image File history File links PMMA.png Chemical structure of PMMA This file has been released into the ...
http://en.wikipedia.org/wiki/Image:PMMA.png - 2k - Cached - Similar pages

Polymethyl methacrylate
... references Structure of methyl methacrylate Polymethyl methacrylate (PMMA) or poly(methyl 2-methylpropanoate) is the ... the properties of the two materials include: PMMA is lighter: its density (1190 kg/m ... 3 ) is about half that of glass. PMMA does not shatter. PMMA is softer and more easily scratched than ... can be overcome with scratch-resistant coatings. PMMA can be easily formed, by heating ...
http://en.wikipedia.org/wiki/Polymethyl_methacrylate - 9k - Cached - Similar pages

Polymethyl metacrylate   (translated from German)
Polymethyl metacrylate Polymethyl metacrylate (Abbreviation PMMA), more well-known under that Trade name ... similarly thermoplastic Kunststoff . Into the former RGWStates PMMA was called ' Piacryl '. Table of contents History ... out Kunststoff became about 1939 made of PMMA. One of the first everyday life products of PMMA were covers of Record players (brown "SK4 ... materials Acetone, Prussic acid, Schwefelsaeure and Methanol PMMA develops. These materials are poisonous, the ...
http://de.wikipedia.org/wiki/Polymethylmethacrylat - 7k - Cached (German) - Wikipedia (German) - Similar pages

Polymethylmethacrylate   (translated from French)
... knowledge by modifying it. Structure of the PMMA: ( C 5 O 2 H 8 ) N polymethylmethacrylate (often shortened in PMMA, of English PolyMethyl MethWithcrylate) is one thermoplastic ... plates and the manufacture of granules. The PMMA can be moulded by compression, injection, casting ... and extrusion. The sheets and plates of PMMA are easily thermoformées. One can easily metallize it. The PMMA can also be welded by ultrasounds. ...
http://fr.wikipedia.org/wiki/Polyméthacrylate_de_méthyle - 5k - Cached (French) - Wikipedia (French) - Similar pages

Contact lens
... convenient lens. The development of polymethyl methacrylate (PMMA or Perspex/Plexiglas) allowed plastic scleral lenses ... across all of the visible ocular surface. PMMA corneal lenses became the first contact lenses ... manufacturing (lathe) technology. One important disadvantage of PMMA lenses is that no oxygen is transmitted ... lens until the 1930s when polymethyl methacrylate (PMMA or Perspex/Plexiglas) was developed, allowing plastic ... across all of the visible ocular surface. PMMA corneal lenses became the first contact ...
http://en.wikipedia.org/wiki/Contact_lens - 53k - Cached - Similar pages

Contact lens   (translated from Japanese)
... the originally hard lens, in the material PMMA (It is something which used the hard ... superior easily in durability, but as for PMMA oxygen completely, there is a limit in ... that American Obrig and Muller can use PMMA for the lens. 1937 year :The semi ... hard type is created making use of PMMA. 1949 year :For the first time Doctor ...
http://ja.wikipedia.org/wiki/コンタクトレンズ - 18k - Cached (Japanese) - Wikipedia (Japanese) - Similar pages

Talk:Contact lens
... are unfamiliar with "Perspex" and only know PMMA as "Plexiglas." Both are trademarks, but since the neutral term "PMMA" would also be unfamiliar to most people ... doesn't mention other trade names for PMMA. You'd have to go to its ...
http://en.wikipedia.org/wiki/Talk:Contact_lens - 21k - Cached - Similar pages

Pyrotechnic mixture   (translated from German)
... mixture. 24% B + 70% KNO 3 + 6% PMMA Very reliable ignition mixture; burns also with ... Pb 3 O 4 + 25% SI + 1% PMMA Verzoegerungssatz; burns down slowly with defined speed ...
http://de.wikipedia.org/wiki/Pyrotechnische_Mischung - 3k - Cached (German) - Wikipedia (German) - Similar pages

Glass eye   (translated from German)
... made of glass, since the organic materials (PMMA) a soft, surface which can be damaged ... guarantee the mucous membrane compatibility. In addition PMMA is biologically not inert; Remainder monomers can ...
http://de.wikipedia.org/wiki/Glasauge - 14k - Cached (German) - Wikipedia (German) - Similar pages

Refractive index   (translated from German)
... 1,46 Celluloseacetat (APPROX.) 1,48 Plexiglass (PMMA) 1,49 Benzene 1,49 Kronglas 1 ... silver film at the boundary surface too PMMA arising negative refractive index, in order to ...
http://de.wikipedia.org/wiki/Brechzahl - 14k - Cached (German) - Wikipedia (German) - Similar pages