Process for manufacturing petroleum resins for adhesive thermofu

Details Process for manufacturing petroleum resins for adhesive thermofu Process for manufacturing petroleum resins for adhesive thermofu

1978-03-10

1979-11-06

Wong, Jr., Harry

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526290, 528487, 528488, 528490, 525 15, C08F24000

Patent

active

041736990

ABSTRACT:
A process for manufacturing petroleum resins for adhesive thermofusible compositions, having a softening point comprised between 60.degree. and 110.degree. C., a molecular weight comprised between 700 and 1,500 and a Gardner color index less than 9, consisting in polymerizing a C.sub.5 hydrocarbon distillation cut issuing from a steam cracking of naphtha or gas-oil and containing less than 5% isoprene and less than 1% cyclopentadiene, in the presence of a Friedel-Crafts catalyst.

REFERENCES:
patent: 2750359 (1956-06-01), Hamner et al.
patent: 3880820 (1975-04-01), Sato
Slade, Polymer Molecular Weights, vol. 4, (part I) (1975) pp. 2 and 3, Marcel Dekker, Inc., N.Y.

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