PRODUCTION OF ROSIN WHICH HAS PALE COLOR AND GOOD STABILITY

Title:

PRODUCTION OF ROSIN WHICH HAS PALE COLOR AND GOOD STABILITY

Document Type and Number:

Japanese Patent JPS614779

Kind Code:

A

Abstract:

PURPOSE: To produce rosin which has pale color and good stability against oxidation and discoloration by heating, by disproportionating distilled rosin in the presence of a disproportionation metal catalyst.

CONSTITUTION: Rosin such as gum rosin, wood rosin or tall oil rosin is distilled at 200W300°C under a reduced pressure of 50mmHg or below. The distilled rosin is subjected to a disproportionation reaction in the presence of a disproportionation catalyst (e.g. palladium on carbon) at 150W300°C in an inert gas atmosphere.

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Inventors:

KOUNO MASANAO
ARIMOTO KUNIO
TSUCHIDATE MITSUO
SANADA YASUYOSHI
SHIMA TOSHINORI
KAWABATA AKIO

Application Number:

JP12583484A

Publication Date:

January 10, 1986

Filing Date:

June 19, 1984

Export Citation:

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Assignee:

HARIMA CHEMICALS INC

International Classes:

C09F1/00; C09D193/00; C09D193/04; C09F1/04; C09J193/00; C09J193/04; (IPC1-7): C09D3/40; C09F1/04; C09J3/26

Domestic Patent References:

JP45028963A
JPS4932560A	1974-03-25

Attorney, Agent or Firm:

Takeyasu Hideo

Next Patent: TEMPORARY FIXING ADHESIVE COMPOSITION FOR SPOT WELDING