Hydrocarbon resins
AssigneeHoechst Aktiengesellschaft
InventorsGerhard Werner, Peter Grafe, Richard Sattelmeyer, Heinz Schmelzer
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Abstract
A process for the preparation of a hydrocarbon resin which comprises polymerizing a mixture of (a) from 30 to 90% by weight of a dicyclopentadiene component comprising dicyclopentadiene and up to 30% by weight of an at most dialkylated dicyclopentadiene having from 1 to 4 carbon atoms in each alkyl substituent and (b) from 10 to 70% by weight of an aliphatic olefin containing 8 carbon atoms in the presence of a Friedel-Crafts catalyst and a solvent at a temperature of from 30.degree. to 140.degree. C wherein the polymer obtained is isolated as such or subsequently hydrogenated, and hydrocarbon resins prepared according to said process.
Claims15
A process for the preparation of a hydrocarbon resin having a molecular weight of 400 to 2000 which comprises polymerizing a mixture of (a) from 30 to 90% by weight of a dicyclopentadiene component comprising dicyclopentadiene and up to 30% by weight of an at most dialkylated dicyclopentadiene having from 1 to 4 carbon atoms in each alkyl substituent and (b) from 10 to 70% by weight of an aliphatic olefin containing 8 carbon atoms in the presence of a Friedel-Crafts catalyst and a solvent at a temperature of from 30.degree. to 140.degree. C.
An olefinically unsaturated hydrocarbon resin having a molecular weight of from 400 to 2000, a melting point of from 20.degree. to 140.degree. C (by the capillary method) and a viscosity of from 10 to 5000 cP (as a 70% toluene solution at 20.degree. C) and comprising (a) from 30 to 90% by weight of polymerised units of a dicyclopentadiene component comprising dicyclopentadiene and up to 30% by weight of an at most dialkylated dicyclopentadiene having from 1 to 4 carbon atoms in each alkyl substituent and (b) from 10 to 70% by weight of polymerised units of an aliphatic olefin containing 8 carbon atoms.
A hydrogenated hydrocarbon resin having a molecular weight of from 500 to 1500, a bromine number below 25, a melting point of from 20.degree. to 140.degree. C (by the capillary method) and a viscosity of from 10 to 5000 cP (as a 70% toluene solution at 20.degree. C) and comprising (a) from 30 to 90% by weight of polymerised units of a dicyclopentadiene component comprising dicyclopentadiene and up to 30% by weight of an at most dialkylated dicyclopentadiene having from 1 to 4 carbon atoms in each alkyl substituent and (b) from 10 to 70% by weight of polymerised units of an aliphatic olefin containing 8 carbon atoms.
Dependencies are inferred from the claim text.