High softening point hydrocarbon resins from 1,5-cyclooctadiene

Details High softening point hydrocarbon resins from 1,5-cyclooctadiene High softening point hydrocarbon resins from 1,5-cyclooctadiene

1987-07-06

1989-01-31

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526308, 156334, C08F 414, C08F 3206

Patent

active

048016683

ABSTRACT:
Processes for the preparation of low non-transannular, high softening point hydrocarbon resins from 1,5-cyclooctadiene are disclosed. In one aspect of the invention, 1,5-cyclooctadiene is heated in the presence of an aluminum halide catalyst at temperatures at or above 80.degree. C. to give the desired resin. In another aspect of the invention, 1,5-cyclooctadiene is combined with a copolymerizable olefin in the presence of an aluminum halide catalyst at temperatures ranging from 30.degree. C. to 250.degree. C. The high softening point resins produced by these processes have levels of non-transannular impurities below 20% by weight, and these resins are particularly useful as wetting or bonding agents for coatings, adhesives, and other applications.

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