A serial of propargyl-functional novolak resins(PN)modified with m-(3-acetylenephenyl)maleimide monomer(3-APMI) were prepared by copolymeriztion between 3-APMI monomer and PN resin at different weight ratios to improve curing reactivity and heat-resistant of PN by introdued maleimide chain segment.

Five kinds of nanosized titania were used as photocatalysts for the hydrolysis of methylacetylene and characterized by X-ray diffraction and diffuse reflecta nce UV-Vis absorption spectroscopy.

In order to discuss the regioselectivity of nitrile oxide 1,3-dipolar cycloaddition to propyne, 1,3-dipolar cycloaddition reaction of substituted nitrile oxide (RCNO, R=F, NO2, OCH3, OH, COOCH3, CHO, CONH2, H, CH3) with propyne was studied using density functional theory at the 6-311++G** level, and the reaction rates were calculated at different temperature from 200 to 400 K.

Theoretic studies on dissociation of propyne at 157 nm were performed.

The reaction results of the selective hydrogenation of MethylAcetylene(propyne)and Propadiene(MAPD) in C 3 distillate by catalytic distillation were investigated with randomlypacked structure of packingtype catalyst, the combined structure of sieve tray and packingtype catalyst as well as the structure with interlaced packing and ordinary catalyst.