Patent ID: 6310154
Filing Date: 2001-10-30
Classification: C08F

Abstract:
A process for making a hydrocarbon resin, comprising polymerizing a feed stream comprising C5 monomers in the presence of a solid acid catalyst to produce a hydrocarbon resin, wherein substantially all freely-associated water has been removed from the solid acid catalyst, and wherein the solid acid catalyst comprises as an active catalyst at least one member selected from the group consisting of acid activated clay, silica-alumina, amorphous silica-alumina, Br.o slashed.nsted acid on silica, Br.o slashed.nsted acid on silica-alumina, zeolites, mesoporous silica-alumina, Br.o slashed.nsted acid on mesoporous silica, and Br.o slashed.nsted acid on mesoporous silica-alumina, wherein water removal from the solid acid catalyst comprises calcining the solid acid catalyst at a temperature of about 100.degree. C. to 400.degree. C. to form the active catalyst, wherein the hydrocarbon resin has a number average molecular weight (Mn) of about 400 to 2000, a weight average molecular weight (Mw) of about 500 to 3500, a Z average molecular weight (Mz) of about 700 to 15,000, and a polydispersity (pID) as measured by Mw/Mn between about 1.2 and 5, where Mn, Mw, and Mz are determined by size exclusion chromatography (SEC).