Norman E Daughenbaugh

55021409, Mar 26, 1996

Oct 19, 1994

8/325763

Norman E. Daughenbaugh - Turtle Creek PA
Dane G. Goodfellow - Pittsburgh PA
Deborah A. Riedl - Library PA

Hercules Incorporated - Wilmington DE

C08F23208

526283

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.

47015179, Oct 20, 1987

Mar 13, 1986

6/839841

Norman E. Daughenbaugh - Turtle Creek PA

Hercules Incorporated - Wilmington DE

C08G 8300

528205

Disclosed are terpolymers having a Ring and Ball softening point of 69. degree. C. to 130. degree. C. prepared from a vinyl-substituted aromatic hydrocarbon, a monoterpene hydrocarbon and a phenol. The terpolymers are useful as tackifiers in adhesive compositions.

61843083, Feb 6, 2001

Feb 3, 1998

9/017936

Norman Edward Daughenbaugh - Turtle Creek PA
Dane George Goodfellow - Pittsburgh PA
Deborah Ann Riedl - Library PA

Hercules Incorporated - Wilmington DE

C08F 804

525338

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.

51771632, Jan 5, 1993

Jun 7, 1991

7/711689

Sung G. Chu - Hockessin DE
Norman E. Daughenbaugh - Turtle Creek PA
Mark J. Rosner - Jeannette PA

Hercules Incorporated - Wilmington DE

C08F 200

526 76

A tackifier resin is prepared by polymerizing a monomer mixture of 10-70% piperylene concentrate and 30-90% of a vinyl aromatic monomer in the presence of a boron trifluoride catalyst and an inert diluent. The resin is water white in color, has a Gardner number of less than one, a softening point of 60. degree. to 120. degree. C. and a polydispersity of 1 to 5. The tackifier is used in formulations based on EVA, block copolymers and polyolefins for hot melt and pressure sensitive adhesive applications.

57392390, Apr 14, 1998

Jun 7, 1995

8/487791

Norman Edward Daughenbaugh - Turtle Creek PA
Dane George Goodfellow - Pittsburgh PA
Deborah Ann Riedl - Library PA

Hercules Incorporated - Wilmington DE

C08F23208

526283

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.

54912148, Feb 13, 1996

May 5, 1995

8/437101

Norman E. Daughenbaugh - Turtle Creek PA
Dane G. Goodfellow - Pittsburgh PA

Hercules Incorporated - Wilmington DE

C08F 624

528483

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.