"Process for preparing petroleum resins having low softening poi

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...

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260 285AV, 260 285B, 260888, 260889, 526 82, 526 89, 526 90, 526191, 526204, 526206, 526209, 526212, 526237, 526238, 526290, C08F 200, C08F 400, C08F 442, C08F24000

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040781321

ABSTRACT:
Low softening point resins are prepared by a process which comprises polymerising using a Friedel Crafts catalyst:
(1) a petroleum resin feed comprising C.sub.5 olefins and C.sub.5 diolefins or a mixture of C.sub.5 and C.sub.6 olefins and diolefins, said feed being obtained from the cracking of petroleum feedstock and being subjected to thermal soaking at a temperature of 100.degree. C to 150.degree. C, and
(2) a branched chain reactive aliphatic olefin or an oxygenated transfer agent.
Preferred additives are diisobutene or U.O.P. olefins. The polymerization may take place in the presence of a C.sub.8 to C.sub.10 unsaturated aromatic compound.

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