Hydrocarbon resin and process for preparation
AssigneeEastman Kodak Company
InventorRobert P. Allen
Life of this patent
Estimating the term…
Abstract
This invention relates to novel hydrocarbon resins and processes for their preparation. More particularly, the invention relates to a liquid hydrocarbon resin prepared by polymerizing norbornene and xylene with a Friedel-Crafts catalyst. The polymerized resin is hydrogenated to provide water white liquid hydrocarbon resins useful as liquid tackifiers in preparing hot-melt adhesive formulations.
Claims12
A process for preparing a liquid hydrocarbon resin having a Gardner color of about 8 to 18 and a viscosity of about 1,500 cp. at 38.degree. C. to about 7,000 cp. at 66.degree. C. comprising polymerizing a mixture of xylene and norbornene with a Friedel-Crafts catalyst at a temperature of about 60.degree. C. to about 170.degree. C. for a period of from 1 to 4 hours.
A process for preparing a liquid hydrocarbon resin having a Gardner color of about 8 to 18 and a viscosity of about 1,500 cp. at 38.degree. C. to about 10,000 cp. at 38.degree. C. comprising polymerizing a mixture of xylene and norbornene with a Friedel-Crafts catalyst at a temperature of about 60.degree. C. to about 170.degree. C. for a period of from 1 to 4 hours.
A process for preparing a liquid hydrocarbon resin having a Gardner color of about 2 or less and a vicosity of about 1,500 cp at 38.degree. C. to about 7,000 cp. at 66.degree. C. comprising polymerizing a mixture of xylene and norbornene with a Friedel-Crafts catalyst at a temperature of about 60.degree. C. to about 170.degree. C. for a period of from 1 to 4 hours and hydrogenating to provide a water white liquid hydrocarbon resin.
A process for preparing a liquid hydrocarbon resin having a Gardner color of about 2 or less and a viscosity of about 1,500 cp. at 38.degree. C. to about 10,000 cp. at 38.degree. C. comprising polymerizing a mixture of xylene and norbornene with a Friedel-Crafts catalyst at a temperature of about 60.degree. C. to about 170.degree. C. for a period of from 1 to 4 hours and hydrogenating to provide a water white liquid hydrocarbon resin.
Dependencies are inferred from the claim text.