Trans-1,4-polybutadiene synthesis

Details Trans-1,4-polybutadiene synthesis Trans-1,4-polybutadiene synthesis

1990-10-22

1992-02-18

Garvin, Patrick P.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

502117, 526146, 5263486, C08F 470

Patent

active

050895745

ABSTRACT:
Trans-1,4-polybutadiene is a thermoplastic resin by virtue of its high level of crystallinity. Because trans-1,4-polybutadiene contains many double bonds in its backbone, it can be blended and cocured with rubbers. Even through trans-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, trans-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 trans-1,4-polybutadiene; and continuously withdrawing the trans-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.

REFERENCES:
patent: 3928297 (1975-12-01), Thaler et al.
patent: 4153767 (1979-05-01), Ueno et al.
patent: 4340685 (1982-07-01), Takeuchi et al.
patent: 4501867 (1985-02-01), Ueno et al.
patent: 4503202 (1985-03-01), Ueno et al.

Affiliated with

Also associated with

Rating

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.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1824500