Process for manufacturing polymers of bicyclo [2.2.1] heptene-2

Details Process for manufacturing polymers of bicyclo [2.2.1] heptene-2 Process for manufacturing polymers of bicyclo [2.2.1] heptene-2

1975-03-25

1977-04-26

Schofer, Joseph L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

526 65, 526 73, 526142, 526169, 526281, 526909, C08J 900, C08F 200, C08F 444, C08F11000

Patent

active

040200213

ABSTRACT:
Process for manufacturing finely divided polymers of bicyclo [2.2.1] heptene-2 compound comprising the steps of incompletely polymerizing said bicyclo [2.2.1] heptene-2 compound by the ring opening polymerizing technique in the presence of a catalyst system selected from the group comprising a compound of a noble metal of the platinum family and an alcohol-reducing solvent and tungsten hexachloride, an aluminum alkyl and an aromatic solvent, under superatmospheric pressure and in the presence of a quantity of solvent at least equal to that necessary for the solution of said catalyst system and abruptly reducing said pressure at a temperature higher than the vaporization temperature of the reaction mixture under said reduced pressure, whereby an expansion, a division and at least partial drying of the resulting polymer is obtained.

REFERENCES:
patent: 3330815 (1967-07-01), McKeen et al.
patent: 3367924 (1968-02-01), Rinehart
patent: 3491032 (1970-01-01), Skochdopole et al.
patent: 3546183 (1970-12-01), Vergne et al.
patent: 3608031 (1971-09-01), Stastny et al.

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