Production of polymerization grade dicyclopentadiene

Details Production of polymerization grade dicyclopentadiene Production of polymerization grade dicyclopentadiene

1993-12-17

1995-03-28

Sneed, Helen M. S.

Chemistry of hydrocarbon compounds

Plural serial diverse syntheses

To produce alicyclic

585818, 585803, C07C 700, C07C 7144, C07C 100

Patent

active

054018919

ABSTRACT:
A process for purifying crude dicyclopentadiene which comprises the steps of: cracking the crude dicyclopentadiene to form a monomeric-containing effluent which comprises at least one monomer selected from the group consisting of: C.sub.4 acyclic dienes, C.sub.5 acyclic dienes, cyclopentadiene and methylcyclopentadiene; separating the monomeric-containing effluent into a cyclopentadiene-enriched stream and a cyclopentadiene-poor stream; dimerizing the cyclopentadiene-enriched stream to form a dimerizer effluent; contacting a membrane separator under pervaporation conditions with the dimerizer effluent wherein the C.sub.4 acyclic dienes, C.sub.5 acyclic dienes and cyclopentadiene permeate through the membrane separator and wherein a dicyclopentadiene product having a purity of at least about 98% is retained as retentate.

REFERENCES:
patent: 3745744 (1973-07-01), Perry et al.
patent: 3773844 (1973-11-01), Perry et al.
patent: 4914064 (1990-04-01), Schucker
patent: 4944880 (1990-07-01), Ho et al.
patent: 4990275 (1991-02-01), Ho et al.
patent: 5063186 (1991-11-01), Schucker

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