This article reviews the methods of modifying polyaniline with alkyl and aryl and preparing block and graft polyaniline copolymers,and briefly summarizes application potential of polyaniline.

This paper introduces the process of making the block type nonionic surfactant and the applications in the textile industry, cosmetics and other areas.

The factors included block ratio,relative molecular weight (M_p),impurity in feed stock,monomer concentration,feeding method and polymerization reaction conditions.

Then based on the soapfree nanoemulsion,we prepared waterborne block type nanostructure industry paints.

Then based on the polymer nanoe- mulsion,waterborne block type exterior architectural nanopaints have been prepared.

Then based on the polymer nanoemulsion,waterborne block type exterior architectural nanopaints have been prepared.

Dibromomethylbenzene has been successfully used as new difunctional initiator in the atom transfer radical block copolymerization of styrene(St) and ethyl methacrylate(EMA) or butyl methacrylate(BMA), methyl methacrylate(MMA) and BMA.

In this paper, block copolymerization of ethylene oxide and propylene oxide, properties and application of copolyethers were discussed.

The characterization of the tri-block copolymerization products was carried out using viscometry,gel permeation chromatography,FT-IR and 1HNMR.

Synthesis of block polyether demulsifiers and demulsification rule;

Compared with random copolyethers,the wetting ability,emulsifying power,foam disappearing rate and solidifying temperature of block copolyethers BPE with PO block connecting to butoxyl group increase respectively by 30 times,1 time,4 times and 36 ℃,meanwhile the cloud point,surface tension,foaming ability and heat stability decrease by 32 5 ℃,8 2 mN/m,1 5 times and 55% .

A EO/PO block copolyether surfactant DC218 was synthesized by the sequential addition first of propylene oxide and then ethylene oxide to propylene glycol initiator in the presence of a new type of catalyst.