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2 074 873

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IPC

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Application

95109792/04, 1995-06-14

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Actual filing date

1995-06-14

(45)

Published

1997-03-10

(72)

Inventor

Paderin V.Ja.Gorjunova T.G.Aleksandrova T.N.Rjabchikov S.N.Zlobin O.V.Pashin V.A.Chistjakova Z.L.Smirnova L.I.Golub A.I.Savinykh G.F.Kostina N.I.Zubkova G.B.Matjunin N.R.

(73)

Holder

Aktsionernoe Obshchestvo

METHOD FOR PRODUCTION OF MODIFIED ETHER OF COLOPHONY Russian patent published in 1997 - IPC

Abstract RU 2074873 C1

FIELD: organic technology. SUBSTANCE: modified ether of colophony is prepared by interaction of colophony, polyhydric alcohol and disproportioning agent. The process takes place by heating in the presence of resol alkyl phenol-formaldehyde resin, its quantity being 2-6 % of mass of origin colophony. Sulfur-containing alkyl phenol-formaldehyde resin is used as mentioned above disproportioning and clarifying agent, its quantity being 0.05-0.50 % of mass of colophony and resin mixture. Quantity of mentioned above polyhydric alcohol is 10.1-10.8 % of mass of origin colophony. The process may be carried out in the presence of phosphoric acid. EFFECT: increases softening point of colophony ether. 2 cl

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RU 2 074 873 C1

Authors

Paderin V.Ja.

Gorjunova T.G.

Aleksandrova T.N.

Rjabchikov S.N.

Zlobin O.V.

Pashin V.A.

Chistjakova Z.L.

Smirnova L.I.

Golub A.I.

Savinykh G.F.

Kostina N.I.

Zubkova G.B.

Matjunin N.R.

Dates

1997-03-10—Published

1995-06-14—Filed