CR hydrogenation Study

Hydrogenated NBR markets belongs to a special kind of rubber raw materials, as a good oil resistance and heat-resistant elastomer by the attention and has been applied. For the same two-vinyl elastomer CR, in the past have been hydrogenated. That is, try to present in the polymer-butadiene in the carbon-carbon double bonds parts of making single hydrogenation. In this case, the addition reaction of hydrogen to carry out the method is chloroprene polymer dissolved in organic solvents, in the so-called Wilkinson (Wilkinson) catalyst, that is, the rhodium complex Triphenyl Phosphate exist Through the hydrogenation for hydrogenation. However, the application of the technologies hydrogenation efficiency is very low, hydrogen chloride is also from the same time, hoping to be improved. Recently, the catalyst for hydrogenation or other metal complex products, will be found that the high efficiency of the hydrogenation of carbonyl chloride on January 3 hydride (triphenylphosphine) co-Ru (Ⅱ) as a catalyst system, Table 4 Some of its parameters. With the hydrogenation rate of increase in ozone resistance and oil resistance can be improved. In addition, in order to simplify the system in order to achieve hydrogenation, but also demonstrated the polymer latex in the state of hydride technology at the same time worrying also to improve the cold tolerance of the technology.

Use of technology over whether there has been a dehydrochlorination reaction, have not yet seen the report, so the actual situation is not clear, the technology can look forward to making progress at the same time how to expand and is expected to compete, such as the HNBR material difference is subject to be examined.