enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Polycarbonate - Wikipedia

   en.wikipedia.org/wiki/Polycarbonate

   Polycarbonate is commonly used in eye protection, as well as in other projectile-resistant viewing and lighting applications that would normally indicate the use of glass, but require much higher impact-resistance. Polycarbonate lenses also protect the eye from UV light.

3. Polycarbonate (functional group) - Wikipedia

   en.wikipedia.org/wiki/Polycarbonate_(functional...

   A polycarbonate is an oxocarbon dianion consisting of a chain of carbonate units, where successive carbonyl groups are directly linked to each other by shared additional oxygen atoms. That is, they are the conjugate bases of polycarbonic acids , the conceptual anhydrides of carbonic acid , or polymers of carbon dioxide .

4. Poly(trimethylene carbonate) - Wikipedia

   en.wikipedia.org/wiki/Poly(trimethylene_carbonate)

   Poly(trimethylene carbonate) (PTMC) is an aliphatic polycarbonate synthesized from the 6-membered cyclic carbonate, trimethylene carbonate (1,3-propylene carbonate or 1,3-Dioxan-2-one). Trimethylene carbonate (TMC) is a colorless crystalline solid with melting point ranging between 45°C and 48 °C and boiling point at 255°C (at 760 mmHg).

5. CR-39 - Wikipedia

   en.wikipedia.org/wiki/CR-39

   CR-39 is made by polymerization of ADC in presence of diisopropyl peroxydicarbonate (IPP) initiator.The presence of the allyl groups allows the polymer to form cross-links; thus, it is a thermoset resin.

6. Category:Polycarbonates - Wikipedia

   en.wikipedia.org/wiki/Category:Polycarbonates

   Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Help; Learn to edit; Community portal; Recent changes; Upload file

7. Crystallization of polymers - Wikipedia

   en.wikipedia.org/wiki/Crystallization_of_polymers

   Infrared absorption or reflection spectra from crystalline polymers contain additional peaks which are absent in amorphous materials with the same composition. These signals may originate from deformation vibrations of the regular arrangement of molecular chains. From the analysis of these bands, the degree of crystallinity can be estimated. [6]

8. Diphenyl carbonate - Wikipedia

   en.wikipedia.org/wiki/Diphenyl_carbonate

   World production capacity of diphenyl carbonate was 254,000 tonnes in 2002, and phosgenation of phenol is the most significant route. [5] Phosgenation of phenol can proceed under various conditions.

9. Glass batch calculation - Wikipedia

   en.wikipedia.org/wiki/Glass_batch_calculation

   An example batch calculation may be demonstrated here. The desired glass composition in wt% is: 67 SiO 2, 12 Na 2 O, 10 CaO, 5 Al 2 O 3, 1 K 2 O, 2 MgO, 3 B 2 O 3, and as raw materials are used sand, trona, lime, albite, orthoclase, dolomite, and borax. The formulas and molar masses of the glass and batch components are listed in the following ...