Petroleum resins and their production with BF3 catalyst
AssigneeExxonMobil Chemical Patents Inc.
InventorsKenneth Lewtas, Maria Leonor Garcia, James Hanley Clark, Karen Wilson
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Abstract
Petroleum resins are produced using a supported BF3 cocatalyst complex. Preferably the cocatalyst is organic such as an alcohol or a carboxylic acid. Use of the catalyst in supported form together with the cocatalyst enables control over both Bronsted and Lewis acidity leading to better control of resin properties. Waste disposal and catalyst handling problems are also overcome.
Claims18
A petroleum resin prepared by the polymerization of C4 to C6 and/or C8 to C9 unsaturated hydrocarbon feeds wherein the feeds are contacted under polymerization conditions with a catalyst comprising a supported boron trifluoride/cocatalyst complex wherein said feeds comprise one or more of, an aromatic petroleum feed comprising C8 to C9 polymerizable and unpolymerizable materials;
- aloha-methyl styrene, vinyl toluene, indene, alkylated derivatives thereof or mixtures thereof;
- butadiene isobutylene. 2-methyl-2-butene, 1-pentene, 2-methyl-1-pentene, cyclopentene, cyclohexene, 1,3-pentadiene, 1,4-pentadiene, isoprene, 1,3-hexadiene, 1,4-hexadiene, cyclopentadiene or dicyclopentadiene.
The petroleum resin of claim wherein said feeds comprise styrene, alpha-methyl styrene, beta-methyl styrene, 4-methyl styrene, or vinyl toluene.
Dependencies are inferred from the claim text.