Polybutene composition containing halogen-containing additives a

Details Polybutene composition containing halogen-containing additives a Polybutene composition containing halogen-containing additives a

1973-05-10

1976-05-04

Moatz, Harry I.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

252182, 252 56D, 526 74, 526213, C07D30736

Patent

active

039548120

ABSTRACT:
Viscous polybutenes of number average molecular weight (M.sub.n) in the range of about 300 to about 3000 have improved reactivity with intramolecular anhydrides of unsaturated aliphatic dicarboxylic acids when such polybutenes contain rather small amounts, i.e., 5 to 200 ppm, of halogenated, preferably chlorinated and/or brominated carboxylic or sulfonic acid. Preference is given to such halogen containing compounds having a sufficient vapor pressure at a temperature in the range of 100.degree. to 300.degree.C to be substantially completely removed at absolute pressures in the range of 5 to 760 mm Hg. Use of such polybutenes containing such halogenated compounds in the addition reaction with said unsaturated anhydrides can reduce formation of undesired tarry product resulting from polymerization and/or thermal decomposition of the unsaturated anhydrides and enhance yield of desired alkenyl-substituted anhydride.

REFERENCES:
patent: 2845403 (1958-07-01), Gunberg
patent: 3018250 (1962-01-01), Anderson et al.

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