Lucite®

Figure 3 Test object no. 1, graphite central cylinder inserted in a lucite and aluminum...

Place 25 g. of methyl methacrylate polymer (G.B. Diakon (powder). Perspex (sheet) U.S.A. Lucite, Plexiglass) in a 100 ml. Claisen flask, attach an efficient condenser e.g., of the double smface type) and distil with a small luminous flame move the flame to and fro around the sides of the flask. At about 300° the polymer softens and undergoes rapid depolymerisation to the monomer, methyl methacrylate, which distils over into the receiver. Continue the distillation until only a small black residue (3-4 g.) remains. Redistil the hquid it passes over at 100-110°, mainly at 100-102°. The yield of methyl methacrylate (monomer) is 20 g. If the monomer is to be kept for any period, add 0 -1 g. of hydro quinone to act as a stabiUser or inhibitor of polymerisation. 

Methyl methacrylate H2C=CC02CH3 1 CH3 (-ch2-c-) CH3 When cast in sheets is transparent used as glass substitute (Lucite Plexiglas)... 

Perspex, lucite. Transparent sheet and mouldings. Aircraft windows, laminated windscreens. 

Perspex, Plexiglas or lucite) is one of these the two radicals are —CH3 and —COOCH3. Now the difficulties of getting regular arrangements increases, and most of these polymers are amorphous. 

Examples of commercial poly(methyl methacrylate) sheet are Perspex (ICI), Oroglas and Plexiglas (Atoglas). Poly(methyl methacrylate) moulding powders include Diakon (ICI), Acry-ace (Fudow Chemical Co., Japan), Lucite (Du Pont) and Vedril (Montecatini). 

Methyl methacrylate ch3 j J Plexiglas, Lucite Paint, sheets, moldings... 

Lucite, and Plexiglas result. It is thus possible to create molecules with custom-built properties for various uses as plastics or fibers. 

For single-axis rotation, a special lucite wheel is used designed to hold up to 12 small polyethylene vials contg expl. The wheel is manually mounted in front of the accelerator target before irradiation, and manually removed after irradiation for counting the samples... 

It is the preferred method where speed is not essential — but when the number of samples to be analyzed is large, multiple sample irradiation on the lucite wheel. with single-axis rotation is used. The precision of this latter technique for six plant samples of Octol is shown in Table 2a. 

In this series each irradiation consisted of six Octol samples, an 80/20 Octol reference standard and a blank vial mounted on the lucite wheel. 

Howitzer (Trademark of Reactor Experiments, Inc). The assembly is a 6-cu ft cylindrical Lucite tank filled with distilled water and containing three access ports (Fig 3). The large spherical container on the right is the shielded storage cask for the 2S2Cf neutron source when not in use... 

This feasibility study shows that determination of pellet wt by fast neutron oxygen activation analysis can be used for quality assurance inspection of M34 primers. Either direct oxygen analysis, where a comparison standard (such as lucite) is used, or a ratio method, utilizing the Cu in the cup-anvil combination as an internal standard, can be applied. In general, the uniformity of production primers is quite satisfactory, as is usually the case where production procedures are standardized. It seems likely that the light pellet is one which has been improperly manufd and will probably be well below specifications in pellet wt. Production experience with such primers indicates that only one in 3x10s primers is expected to show low pellet wt therefore, one would not expect to find a reject in a small sampling. Nevertheless, detection and rejection of this one bad unit is critical for the prevention of weapon malfunctions and possible injuries to personnel... 

Polymethylmethacrylate (Lucite, Plexiglas, Crystallite or PMMA)., A thermoplastic translucent resin of the acrylate resin family. The monomer, methylmethacrylate ... 

They are also important chemical intermediates. For example, acetone is used to make methyl methacrylate (the starting material for Plexiglas and Lucite plastics), methyl isobutyl ketone, and Bisphenol A (used in epoxy and polycarbonate resins). 

The polymerization of methyl methacrylate produces poly(methyl methacrylate), an exceptionally clear plastic sold under the names Plexiglas or Lucite as a shatter-proof substitute for glass in windows, doors, and other glazing applications. 

The action of sulphuric acid alone upon acetone cyanohydrin affords a-methylacryhc acid. The methyl methacrylate polymers are the nearest approach to an organic glass so far developed, and are marketed as Perspex (sheet or rod) or Diakon (powder) in Great Britain and as Plexiglass and Lucite in the U.S.A. They are readily depolymerised to the monomers upon distillation. The constitution of methyl methacrylate polymer has been given as ... 

Whole organs and tissues Animal placed, backbone down in lucite box and positioned 33 cm from Nal(TI) crystal. Livers and other tissues were counted between two Nal(TI) crystals. Gamma-ray spectrometry No data No data Lloyd et al. 1970... 

A 40-mm i.d. Lucite column served as the reactor for the experiments of Haure et al. (1989). Reactor and feed system are shown schematically... 

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