Preparation of polyisoprene having high content of 1,2- and 3,4-

Details Preparation of polyisoprene having high content of 1,2- and 3,4- Preparation of polyisoprene having high content of 1,2- and 3,4-

1987-05-29

1990-01-16

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526173, 526209, 5263402, 525244, 525250, 5253331, 525342, 525371, 525914, C08F 448

Patent

active

048944254

ABSTRACT:
Polyisoprenes having a high content of 1,2- and 3,4-structural units, a process for their preparation, and their use.
The previous processes for the preparation of polyisoprene having a high content of 1,2- and 3,4-structural units were still unsatisfactory in terms of the cocatalyst employed.
The use of ethylene glycol dialkyl ethers of the formula

REFERENCES:
patent: 4118258 (1978-10-01), Graveron et al.
patent: 4385151 (1983-05-01), Furukawa et al.
patent: 4577002 (1986-03-01), Broekhuis
Hirokazu Morita et al., "Isoprene Polymerization by Organometallic Compounds, I," JACS 79, 5853 (1957).

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