Norman E. Daughenbaugh - Turtle Creek PA Dane G. Goodfellow - Pittsburgh PA Deborah A. Riedl - Library PA
Assignee:
Hercules Incorporated - Wilmington DE
International Classification:
C08F23208
US Classification:
526283
Abstract:
A hydrocarbon resin is prepared by (1) thermally polymerizing a mixture consisting essentially of (a) about 40% to 90% by weight based on total monomers of a cyclic diolefin component comprising at least about 50% by weight dicyclopentadiene, and (b) about 60% to 10% by weight based on total monomers of a specified vinyl aromatic component, preferably alpha-methylstyrene; para-methyl-. alpha. -methylstyrene; 2,4-diphenyl-4-methyl-1-pentene, or mixtures thereof, and (2) recovering a product having a Ring and Ball softening point of about 70. degree. to about 150. degree. C. Hydrogenation of this resin produces light colored, thermally stable products that are useful as tackifiers in adhesives.
Norman Edward Daughenbaugh - Turtle Creek PA Dane George Goodfellow - Pittsburgh PA Deborah Ann Riedl - Library PA
Assignee:
Hercules Incorporated - Wilmington DE
International Classification:
C08F 804
US Classification:
525338
Abstract:
A hydrocarbon resin is prepared by (1) thermally polymerizing a mixture consisting essentially of (a) about 40% to 90% by weight based on total monomers of a cyclic diolefin component comprising at least about 50% by weight dicyclopentadiene, and (b) about 60% to 10% by weight based on total monomers of a specified vinyl aromatic component, preferably alpha-methylstyrene; para-methyl-. alpha. -methylstyrene; 2,4-diphenyl-4-methyl-1-pentene, or mixtures thereof, and (2) recovering a product having a Ring and Ball softening point of about 70. degree. to about 150. degree. C. Hydrogenation of this resin produces light colored, thermally stable products that are useful as tackifiers in adhesives.
Norman Edward Daughenbaugh - Turtle Creek PA Dane George Goodfellow - Pittsburgh PA Deborah Ann Riedl - Library PA
Assignee:
Hercules Incorporated - Wilmington DE
International Classification:
C08F23208
US Classification:
526283
Abstract:
A hydrocarbon resin is prepared by (1) thermally polymerizing a mixture consisting essentially of (a) about 40% to 90% by weight based on total monomers of a cyclic diolefin component comprising at least about 50% by weight dicyclopentadiene, and (b) about 60% to 10% by weight based on total monomers of a specified vinyl aromatic component, preferably alpha-methylstyrene; para-methyl-. alpha. -methyl-styrene; 2,4-diphenyl-4-methyl-1-pentene, or mixtures thereof, and (2) recovering a product having a Ring and Ball softening point of about 70. degree. to about 150. degree. C. Hydrogenation of this resin produces light colored, thermally stable products that are useful as tackifiers in adhesives.
Norman E. Daughenbaugh - Turtle Creek PA Dane G. Goodfellow - Pittsburgh PA
Assignee:
Hercules Incorporated - Wilmington DE
International Classification:
C08F 624
US Classification:
528483
Abstract:
The color of hydrocarbon resins having carbon-carbon double bonds and containing color bodies is lightened by a hydrotreating process comprising contacting a resin having a weight average molecular weight Mw of 250-10,000 with hydrogen in the presence of a catalyst that promotes the hydrogenation of the color bodies without substantially changing the content of carbon-carbon double bonds in the resin. The preferred catalysts are copper chromite and copper/zinc.
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