Process for cationic polymerizations

Details Process for cationic polymerizations Process for cationic polymerizations

1992-02-21

1993-06-15

Ziegler, Jacob

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525249, 525259, 525267, 525268, 525269, 525270, 525272, 525315, 525316, 525319, C08F29300, C08L 5300

Patent

active

052199487

ABSTRACT:
Elastomeric polymers comprising polymerized alpha-olefins or conjugated alkadienes are produced by cationic polymerization in the presence of titanium tetrachloride and an electron pair donor selected from pyridine or a non-hindered alkylpyridine. The polymers have very narrow, mono-modal molecular weight distributions such a achived by anionic polymerization. Polymerization of each monomer is terminated prior to broadening of the molecular weight distribution which significantly detracts from polymer properties.

REFERENCES:
patent: 5066730 (1991-11-01), Kennedy et al.

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