Petroleum resins

Details Petroleum resins Petroleum resins

1974-08-12

1976-04-20

Schofer, Joseph L.

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

Synthetic resins

Polymerizing in two or more physically distinct zones

260 336PQ, 526 77, 526291, 526284, C08F21000, C08F21200, C08F24000

Patent

active

039519287

ABSTRACT:
In the production of a petroleum resin an unsaturated hydrocarbon feedstock is continuously polymerised by means of a Friedel-Crafts catalyst in a plurality of alternating polymerisation and cooling zones in which catalyst is added to each polymerisation zone.

REFERENCES:
patent: 2894937 (1959-07-01), Banes et al.
patent: 3628918 (1971-12-01), Beals
patent: 3709854 (1973-01-01), Hepworth et al.
patent: 3763125 (1973-10-01), Moody et al.

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