The process comprises dehydrating a diol in the presence of a catalyst comprising cerium oxide supported on a carrier.
该方法包含在催化剂的存在 下使二醇脱水，该催化剂包含负载于载体上的氧化铈。
2
Through the experiment, it is found that the tack free time is affected greatly by the content of catalyst, dehydrating agent, plasticizer and the free NCO.
通过实验发现催化剂、脱水剂、增塑剂以及游离的异氰酸酯含量对密封胶的表干时间有很大的影响。
3
The catalyst and dehydrating agent can be repeatedly used and no pollutant is produced during the technological process.