he solution behavior of random ionomer/nonpolarsolvent systems and the effects of polymer concentration, ion content, the molecular weight of ionomer precursor, character of counterions, degree of neutralization, the presence of simple salts and the polarity of solvent on the solution behavior were introduced with 15 refrences.

The marked characteristics of the solution behavior of random ionomer in polar solvent-typical polyelectrolyte behavior,i.

A New Type of Green Environmental Protection Pipe──Random Copolymerized P olypropylene Pipe;

The living free radical random copolymerizations of styrene with methyl methacrylate initiated by benzoyl peroxide(BPO) were studied in the presence of TEMPO(2,2,6,6-tetramethylpiperidinyl-1-oxy) with the addition of malononitrile(MN).

This paper studied the structural characterization and processing technique of a random copolymer of propylene special resin E-003, which made by FuShun Ethylene Chemical Co.

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% .

The effects of various factors on molecular structure of atactic polyether, ethylene oxide and propylene oxide copolymer with alcohol initiator, were discussed and analyzed from view of copolymerization mechanism and molecular microstructure.

The influence of process conditions of vacuum distillation, ternary azeotropic rectification, binary azeotropic rectification on water content of the initiator systems of atactic polyether with different boiling point was studied.