Methods Polyoxinol-iodine solution with high iodine concentration was prepared by employing solubilization and complexation technology together with physical and chemical analysis method,thereafter its stability was observed.

The detailed operation for complexing-clay treating should be emphasized, such as interface control operation, electric field control operation and furnace temperature control operation.

Study on catalytic distillation coupling process of isobutene oligomerization;

Research on coupling process of short-cut nitrification and simultaneous nitrification and denitrification

Studies on Synthetic Process of Isocyanate Resins for Particleboard;

Study on synthetic process of low toxic urea-formaldehyde resin for bamboo particleboard

In this paper,based on the brief review of the development of waterborne polyurethanes,the synthetic processes of anionic,cationic,zwitteri- onic and nonionic waterborne polyurethanes are introduced in detail,and the advantages and disadvantages of their preparation methods are discussed.