Tar reduction by inorganic halide for reaction of unsaturated an

Details Tar reduction by inorganic halide for reaction of unsaturated an Tar reduction by inorganic halide for reaction of unsaturated an

1973-05-10

1976-01-27

Moatz, Harry I.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D30760

Patent

active

039352498

ABSTRACT:
Viscous polybutenes of number average molecular weight (M.sub.n) in the range of about 300 to about 3,000 have improved reactivity with intramolecular anhydrides of unsaturated aliphatic dicarboxylic acids when reacted in the presence of rather small amounts, i.e., 5 to 200 ppm, of inorganic halogen preferably chlorine and/or bromine containing compounds. Use of such halogen containing compounds in the addition reaction of polybutene with said unsaturated anhydrides can reduce formation of undesired tarry product resulting from polymerization and/or thermal decomposition of the unsaturated anhydrides.

REFERENCES:
patent: 2839550 (1958-06-01), Wiggerink et al.
patent: 3231587 (1966-01-01), Rense
Cotton et al., Advanced Inorganic Chemistry, A Comprehensive Text, p. 460 (1962).

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