Low color, high softening point aromatic resin and method for it

Details Low color, high softening point aromatic resin and method for it Low color, high softening point aromatic resin and method for it

1986-02-10

1987-08-04

Henderson, Christopher

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526237, C08F23604, C08F24000

Patent

active

046847073

ABSTRACT:
Petroleum resins of lightened color while retaining satisfactory melting point and compatibility are provided by a process which comprises catalytically polymerizing an aromatic petroleum cracked or reformed fraction, e.g. an aromatic stream boiling between 80.degree. C. and 260.degree. C., sequentially treated with sulfuric Acid followed by distillation to provide an aromatic feedstock portion which is blended with an aliphatic petroleum cracking or reforming fraction feedstock portion containing cationically polymerizable hydrocarbons, less than 0.5 weight percent of cyclodienes and a pentadiene-1,3 to cyclodiene weight ratio of greater than 50, preferably at least 200 in the presence of a Friedel-Craft catalyst into a petroleum resin of lightened color and softening point in the range of 90.degree. C. to 115.degree. C.

REFERENCES:
patent: 4156762 (1979-05-01), Kudo
patent: 4245075 (1981-01-01), Lepert
patent: 4419503 (1983-12-01), Benitez

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