Process for purification of starting materials for metal catalyz

Details Process for purification of starting materials for metal catalyz Process for purification of starting materials for metal catalyz

1997-06-25

1998-07-07

Lipman, Bernard

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

5253334, C08F 842

Patent

active

057770352

ABSTRACT:
Purifying reagent for the purification of starting materials to be used in a metal compound catalyzed polymerization, containing proton donating reactive contaminants, consisting of a solid product, obtainable by the metallation of a product of a nucleophilic displacement reaction between a halogen alkylated crosslinked poly(vinylaromatic) resin and a metallated conjugated diene compound, which product is insoluble inorganic solvents, which is not able to initiate anionic polymerization of olefins or dienes and which is able to scavenge proton donating contaminants, which may hamper polymerizations catalysted by metal organic compounds; and process for purification of starting materials applying said purifying reagent.

REFERENCES:
patent: 3278487 (1966-10-01), Kun
patent: 3824221 (1974-07-01), Ragg
patent: 4996266 (1991-02-01), Bronn et al.
"Purification of Styrene for Anionic Polymerization" by D. B. Priddy and M. Pirc, Journal of Applied Polymer Science, vol. 40, pp. 41-45, John Wiley & Sons, Inc. (1990).

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