Novel initiator systems containing vanadium for the...

C - Chemistry – Metallurgy – 08 – F

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C08F 4/20 (2006.01) C08F 10/08 (2006.01) C08F 10/14 (2006.01) C08F 210/12 (2006.01)

Patent

CA 2209651

This invention relates to an initiator system for the polymerisation of isoolefins having 4 to 16 carbon atoms, optionally with monomers polymerisable with iso-olefins, the system consisting of or one or more aromatic or heteroaromatic,poly-cyclic hydrocarbons and an aged, organic solution of vanadium tetrachloride, wherein the concentration of the vanadium tetrachloride is 0.01 mmol to 500 mmol per litre of solvent and the molar ratio of aged vanadium tetrachlorideto 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.

L'invention concerne un système d'amorce pour la polymérisation d'isooléfines renfermant de 4 à 16 atomes de carbone, facultativement avec certains monomères; le système est constitué d'un ou de plusieurs hydrocarbures aromatiques ou hétéroaromatiques, polycycliques, et d'une solution organique ancienne de tétrachlorure de vanadium, dont la concentration est de 0,01 à 500 mmole par litre de solvant, et le rapport molaire tétrachlorure de vanadium ancien/hydrocarbures polycycliques de 100/1 à 1/100. On peut, grâce à ce système d'amorce, obtenir des polyisooléfines, notamment des caoutchoucs butyle, à des températures relativement élevées, avec une faible teneur en gel et une masse molaire suffisamment élevée.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Novel initiator systems containing vanadium for the... does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

     

Profile ID: LFCA-PAI-O-1468079

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.