Study on hydrogenation of partial double bond of styrene series thermoplastic elastomer;

In this paper we have discussed and Compared the π bonds strength and σ bond Strength in carbon-carbon double bond and carbon-carbon triple bond.

When epoxy group is introduced into the double bonds of the main molecular chain, the molecular polarity is enhanced,while the high elongation character remains essentially.

An acetoacetylated polyacrylate and a vinylic groups ended polyurethane were synthesized.

The main focuses are the asymmetric allylation reactions of C=N double bonds through using chiral auxiliary groups, chiral allylation reagents, and asymmetric catalysts.

A new type of amphiphilic polymer porous microsphere with different hydrophilic drgree were prepared,its hydrophobic part is PSt-DVB microsphere,the hydrophilic part is PMMA,the influence of reaction time and pendant vinyl groups on the grafting degree and influence of grafting degree on the morphology of microsphere were discussed.

To extend application and improve the hydrophilicity of porous resin microsphere,the modified resin microspheres were prepared by grafting maleic anhydride(MAH) onto porous poly(styrene-divinylbenzen) [P(St-DVB)] with pendant vinyl groups.