Polymerization of tetrahydrofuran with fuming sulphuric acid and

Details Polymerization of tetrahydrofuran with fuming sulphuric acid and Polymerization of tetrahydrofuran with fuming sulphuric acid and

1990-04-30

1991-03-19

Mars, Howard T.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568617, C07C 4102, C07C 4101

Patent

active

050012770

ABSTRACT:
Tetrahydrofuran has been polymerized and copolymerized to form polymers of 1000 to 10,000 molecular weight using fuming sulfuric acid with a cocatalyst selected from salts of Group VA metal halides and superacid salts. The cocatalyst salts may be, for example, NaPF.sub.6, NaSbF.sub.6, and LiO.sub.3 SCF.sub.3.

REFERENCES:
patent: 3712930 (1973-01-01), Matsuda et al.
patent: 3714266 (1973-01-01), Matsuda et al.
patent: 3720719 (1973-03-01), Matsuda et al.
patent: 3778480 (1973-12-01), Matsuda et al.
patent: 3891715 (1975-06-01), Matsuda et al.
patent: 4209641 (1980-06-01), Matsuda et al.
patent: 4371713 (1983-02-01), Matsumoto et al.

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