In order to avoid emulsifying of coal tar in production,the emulsification mechanism of coal tar and the influence of various factors on the stability of coal tar emulsion were studied in laboratory.

Through the analysis of asphalt emulsification mechanism, a conclusion has been arrived at that water soluble cationic emulsifier mixed with oil soluble non-ionic emulsifier has better effects than the single use of cationic emulsifier, on the basis of which a new kind of emulsifier is made out after a great deal of experiments.

In this paper, both thereasons causing wrinkles and the principle of wrinkle resistance are introduced, primary methodsfor formaldehyde-freewrinkle-resistant finishing of real silk fabric are summarized, the advantages and disadvan- tages of some methods such as chemical finishing, physical treatment, biological treatment and compound treatment and wrinkle-resistant des.

The principle,process,and the result of chemical finishing,physical treatment,biological treatment and compound treatment are analysis.

The Theoretical Research & Empirical Analysis on the Optimizing and Coordinating of the Customer Demand in the Development of New Products;