C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
402/444, 252/79
C08F 4/70 (2006.01) C08F 136/06 (2006.01)
Patent
CA 2035828
Trans-1,4-polybutadiene is a thermoplastic resin by virtue of its high level of crystallinity. Because traps-1,4-polybutadiene contains many double bonds in its backbone, it can be blended and cocured with rubbers. Even though traps-1,4-polybutadiene is a thermoplastic resin, it becomes elastomeric when cured alone or when cocured with one or more rubbers. By utilizing the catalyst system and techniques of this invention, traps-1,4-polybutadiene can be synthesized continuously to a high level of conversion with only minimal amounts of gel formation. This invention specifically relates to a process for synthesizing trans-1,4-polybutadiene in a continuous process which comprises continuously charging 1,3-butadiene monomer, an organocobalt compound, an organoaluminum compound, a para-substituted phenol, carbon disulfide, and an organic solvent into a reaction zone; allowing the 1,3-butadiene monomer to polymerize in said reaction zone to form the traps-1,4-polybutadiene; and continuously withdrawing the traps-1,4-polybutadiene from said reaction zone. It is highly preferred for the para-alkyl substituted phenol utilized in this process to contain from about 12 to about 26 carbon atoms.
Smart & Biggar
The Goodyear Tire & Rubber Company
LandOfFree
Trans-1,4-polybutadiene synthesis does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Trans-1,4-polybutadiene synthesis, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Trans-1,4-polybutadiene synthesis will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1711205