Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1994-10-19
1996-03-26
Zitomer, Fred
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
526308, 526335, 526339, 526340, 526347, 5263471, 5263482, C08F23208
Patent
active
055021409
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.
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Daughenbaugh Norman E.
Goodfellow Dane G.
Riedl Deborah A.
Hercules Incorporated
O'Brien R. P. O'Flynn
Patterson Joanne W.
Zitomer Fred
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