Polycarbon Industries dba PCI Synthesis, Jobs & Salary …

“Along with a number of researchers in chemistry and biotechnology, we have developed methods that make it possible to manufacture polycarbonate plastic without Bisphenol-A polyurethane plastic without the use of phosgene and isocyanates,” says Cook. “We are talking about chemical substances that are toxic to humans and the environment, but where, through green chemistry we can produce polymers with the same characteristics as the traditional products. It is simply about the chemical synthesis of new chemicals that lead to the final product. We see a huge market potential of the new methods for the production of plastics.”

Synthesis of mircrocellular polycarbonate

N2 - Silicon-related films have gained much interest as protective coatings for transparent polymeric materials used for automotive components to improve fuel economy and reduce greenhouse gas emissions. This study aims at synthesizing transparent and hard SiOC(-H) films to improve the properties of polycarbonate. SiOC(-H) thin films were synthesized from a mixture of trimethylsilane (TrMS) and O 2 gases with various mixture ratios by radio frequency plasma enhanced chemical vapor deposition (RF-PECVD) method and the characteristics of the films such as transparency, hardness and chemical bonding were investigated as a function of the mixture ratio. The transparency, hardness and chemical bonding were analyzed by ultraviolet-visible (UV-vis) spectroscopy, nanoindentation and Fourier transform infrared (FT-IR) spectroscopy, respectively. As the mixture ratio increased, an increase in hardness and a deterioration in transparency were observed, where the relative ratio of Si-(CH 3) x (x=1, 3) bonds to Si-O-Si-related bonds increased and the number of Si-O-Si bonding in the caged structure decreased. Among the sample films prepared, the film synthesized at a partial pressure ratio of TrMS gas of 60% showed an optical transparency of nearly 100% and a hardness of 6.5GPa, which is equivalent to the hardness of conventional soda-lime glass.


Drug Master Files Submitted or Reviewed during 4Q 2015

T1 - Synthesis of transparent and hard SiOC(-H) thin films on polycarbonate substrates by PECVD method

AB - Silicon-related films have gained much interest as protective coatings for transparent polymeric materials used for automotive components to improve fuel economy and reduce greenhouse gas emissions. This study aims at synthesizing transparent and hard SiOC(-H) films to improve the properties of polycarbonate. SiOC(-H) thin films were synthesized from a mixture of trimethylsilane (TrMS) and O 2 gases with various mixture ratios by radio frequency plasma enhanced chemical vapor deposition (RF-PECVD) method and the characteristics of the films such as transparency, hardness and chemical bonding were investigated as a function of the mixture ratio. The transparency, hardness and chemical bonding were analyzed by ultraviolet-visible (UV-vis) spectroscopy, nanoindentation and Fourier transform infrared (FT-IR) spectroscopy, respectively. As the mixture ratio increased, an increase in hardness and a deterioration in transparency were observed, where the relative ratio of Si-(CH 3) x (x=1, 3) bonds to Si-O-Si-related bonds increased and the number of Si-O-Si bonding in the caged structure decreased. Among the sample films prepared, the film synthesized at a partial pressure ratio of TrMS gas of 60% showed an optical transparency of nearly 100% and a hardness of 6.5GPa, which is equivalent to the hardness of conventional soda-lime glass.