Catalyst for cationic polymerization process

Details Catalyst for cationic polymerization process Catalyst for cationic polymerization process

1977-10-27

1978-12-26

Shine, W. J.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

B01J 2716

Patent

active

041315677

ABSTRACT:
There is provided a process for cationically polymerizing piperylene batchwise or continuously by the addition of piperylene either alone or in admixture with a minor amount of at least another hydrocarbon monomer, incrementally, to a catalyst system consisting essentially of a major amount of an aluminum halide and a minor amount of an inorganic phosphorus acid in an inert solvent while controlling the temperature of reaction in the range of 0.degree. C. to 50.degree. C., drowning the polymerization mixture in water, separating the organic phase therefrom, then removing the solvent and recovering a solid polymer in good color and yield, free from an intractable gel, rendering the same useful as a tackifying resin.

REFERENCES:
patent: 2060871 (1936-11-01), Ipatieff
patent: 3213034 (1965-10-01), Drehman

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