Initiator systems containing vanadium tetrachloride for the (co)

Details Initiator systems containing vanadium tetrachloride for the (co) Initiator systems containing vanadium tetrachloride for the (co)

1997-06-30

2000-01-18

Berman, Susan W.

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

Synthetic resins

Compositions to be polymerized by wave energy wherein said...

522 66, 522184, 522186, 522188, 526139, 526141, 526142, 526143, 526144, 526237, 502227, C08F 250, C08F 420, C08F 1004

Patent

active

060158417

ABSTRACT:
This invention relates to an initiator system for the polymerization of isoolefins having 4 to 16 carbon atoms, optionally with monomers polymerizable with isoolefins, the system consisting of or one or more aromatic or heteroaromatic, polycyclic hydrocarbons and an aged, organic solution of vanadium tetrachloride, wherein the concentration of the vanadium tetrachloride is 0.01 mmol to 500 mmol per liter of solvent and the molar ratio of aged vanadium tetrachloride to polycyclic hydrocarbons is in the range from 100:1 to 1:100.
It is possible by means of the initiator system according to the invention to produce polyisoolefins, in particular butyl rubbers, at relatively high temperatures with only a low gel content and of a sufficiently high molecular weight.

REFERENCES:
patent: 3326879 (1967-06-01), Yamada et al.
patent: 3897322 (1975-07-01), Marek et al.
patent: 3997417 (1976-12-01), Marek et al.
patent: 4808387 (1989-02-01), Datta et al.
patent: 4871523 (1989-10-01), Datta et al.
patent: 5473029 (1995-12-01), Osman
patent: 5516862 (1996-05-01), Yamamoto et al.

Affiliated with

Also associated with

Rating

Initiator systems containing vanadium tetrachloride for the (co) does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Initiator systems containing vanadium tetrachloride for the (co), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Initiator systems containing vanadium tetrachloride for the (co) will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-563879