PROCESS FOR PREPARING PIPERYLENE OLIGOMERS Russian patent published in 1994 - IPC

Abstract RU 2024551 C1

FIELD: preparation of a film forming substance. SUBSTANCE: a process for preparing piperylene oligomers is carried out by polymerization of piperylene-containing mixtures in the presence of an aluminium chloride etherate catalyst and additives in a hydrocarbon solvent. The additive is a terpene hydrocarbon fraction, mp 150-250 C, in an amount of 0.5-2.0 wt % per piperylene. This fraction is taken away from the last reactor in which the process of disproportioning of gum rosin is carried out in the presence of steam at an excessive pressure of 0.005-0.015 MPa. EFFECT: greater efficiency of the process.

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RU 2 024 551 C1

Authors

Trunova O.A.

Shcherban' G.T.

Kutuzov P.I.

Vizhnjaev V.I.

Dates

1994-12-15Published

1992-03-03Filed