Patent ID: 11932711
Assignee: RAIN CARBON GERMANY GMBH
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A method for producing a hydrocarbon resin, comprising:
polymerizing a monomer mixture which contains an aromatic component containing indene and/or C1-4 alkylindene and a cyclic diolefin component containing a cyclic diolefin compound by heating to a polymerization temperature of at least 180° C. to obtain a product stream containing the hydrocarbon resin,
separating oligomers which contain units originating from the cyclic diolefin compound and/or units originating from the aromatic component from the product stream and returning the oligomers to the monomer mixture, and
heating the hydrocarbon resin in an annealing step to a temperature of 150° C. to 300° C. for a period of 15 minutes to 240 hours.