Cyclic ethers and vinyl ethers as molecular weight regulators in alfin polymerizations

Abstract

Abstract RADICAL IN ITS RING OR A VINYL ETHER HAVING THE FORMULA CH2=CHOR1 OR CH2=CHO(CH2CH2O)NR2, WHEREIN N IS AN INTEGER OF FROM 1 TO 3, AND R1 AND R2 ARE ALKYL GROUPS HAVING 1 TO 10 CARBON ATOMS, ALKENYL GROUPS, PHENYL GROUPS, ARALKYL GROUPS OR CYCLOALKYL GROUPS OR A MIXTURE OF THE CYCLIC ETHER AND THE VINYL ETHER. THE ABOVEMENTIONED MOLECULAR WEIGHT REGULATOR NOT ONLY DISPLAYS A PROMINANT MOLECULAR WEIGHT-REGULATING EFFECT, EVEN WHEN USED IN A SMALL AMOUNT, BUT ALSO IS EASILY COMMERCIALLY OBTAINABLE AND INEXPENSIVE, SO THAT MARKED COMMERCIAL ADVANTAGES CAN BE ATTAINED. -O-CH2-CH=CH- CONJUGATED DIOLEFIN POLYMERS HAVING A MOLECULAR WEIGHT OF LESS THAN 1,000,000 CAN BE PRODUCED AT A HIGH POLYMERIZATION RATE AND IN A HIGH YIELD BY HOMOPOLYMERIZING OR COPOLYMERIZING A CONJUGATED DIOLEFIN OR A MIXTURE THEREOF WITH A VINYL AROMATIC HYDROCARBON IN THE PRESENCE OF AN ALFIN CATALYST BY USING, AS A MOLECULAR WEIGHT REGULATOR, A CYCLIC ETHER HAVING AN -O-CH2-O- OR

Inventors

• 👤 K Komatsu
• 👤 N Sakabe
• 👤 S Nishiyama
• 👤 N Ohshima

Bibliographic Details