Dane G Goodfellow

US Patent:

55021409, Mar 26, 1996

Filed:

Oct 19, 1994

Appl. No.:

8/325763

Inventors:

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.

US Patent:

61843083, Feb 6, 2001

Filed:

Feb 3, 1998

Appl. No.:

9/017936

Inventors:

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.

US Patent:

57392390, Apr 14, 1998

Filed:

Jun 7, 1995

Appl. No.:

8/487791

Inventors:

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.

US Patent:

54912148, Feb 13, 1996

Filed:

May 5, 1995

Appl. No.:

8/437101

Inventors:

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.