Polymerization of 1,3-butadiene to trans-1,4-polybutadiene with

Details Polymerization of 1,3-butadiene to trans-1,4-polybutadiene with Polymerization of 1,3-butadiene to trans-1,4-polybutadiene with

1990-07-26

1991-08-06

Teskin, Fred

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526173, 526335, 502152, 502154, C08F 448, C08F13606

Patent

active

050379127

ABSTRACT:
Trans-1,4-polybutadiene is a thermoplastic resin rather than a rubber at room temperature by virtue of its high degree of crystallinity. Because trans-1,4-polybutadiene contains many double bonds in its backbone, it can be blended and cocured with rubbers. It is accordingly an attractive alternative to conventional fillers such as carbon black, which are typically utilized in compounding rubber. By utilizing the catalyst system and techniques of this invention, trans-1,4-polybutadiene can be synthesized at a high level of conversion. This invention specifically relates to a process for the synthesis of trans-1,4-polybutadiene by an anoinic polymerization process which comprises: (a) adding an organolithium compound and an alkali metal alkoxide as a catalyst system to a polymerization medium containing 1,3-butandiene monomer and an organic solvent; and (b) allowing the 1,3-butandiene monomer to polymerize at a temperature which is within the range of about -10.degree. C. to about 45.degree. C. to produce the trans-1,4-polybutadiene.

REFERENCES:
patent: 3285894 (1966-11-01), Lim et al.
patent: 3356754 (1967-12-01), Wofford
patent: 3801554 (1974-04-01), Selman
patent: 4794145 (1988-12-01), Lund et al.
Chemical Abstracts (76):26204p (1972).
Wofford et al., Copolymerization of Butadiene and Styrene by Initiation with Alkyllithium and Alkali Metal Tert-Butoxides, J. Poly. Sci: Pt. A-1, 1, 461-469, 1969.

Affiliated with

Also associated with

Rating

Polymerization of 1,3-butadiene to trans-1,4-polybutadiene with does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polymerization of 1,3-butadiene to trans-1,4-polybutadiene with , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polymerization of 1,3-butadiene to trans-1,4-polybutadiene with will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1988151