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。
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。
The catalyst and dehydrating agent can be repeatedly used and no pollutant is produced during the technological process.
催化剂和脱水剂可以反复利用，并且该工艺过程无污染。
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