Hydrocarbon resins and process for preparing same

Details Hydrocarbon resins and process for preparing same Hydrocarbon resins and process for preparing same

C - Chemistry, Metallurgy

08

F

400/1125, 400/17

C08F 2/40 (2006.01) C08F 240/00 (2006.01) C08L 57/02 (2006.01) C09J 121/00 (2006.01) C09J 123/08 (2006.01)

Patent

CA 1066000

ABSTRACT OF THE DISCLOSURE A process for preparing a hydrocarbon resin which comprises copolymerizing (A) a hydrocarbon fraction boiling within the range of 130° to 300°C. obtained by cracking, reforming and/or refining petroleum with (B) dicylopentadiene in the presence of Friedel-Crafts catalyst in a proportion such that the resulting hydro- carbon resin contains, based on the total weight thereof, 20 to 80% of a unit derived from the dicyclopentadiene (B). A hydrocarbon resin having a number average molecular weight of 300 to 2500, a softening point of 40 to 180°C., a bromine number of 5 to 100 g/100 g, and a Gardner color hue of 5 to 17, prepared by the above process. This hydrocarbon resin is useful as an adhesive component of pressure-sensitive adhesive and hot-melt composition.

238985

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