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2 186 072

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IPC

(21) (22)

Application

2000130334/04, 2000-12-04

(24)

Start date

2000-12-04

(22)

Actual filing date

2000-12-04

(45)

Published

2002-07-27

(72)

Inventor

Papkov V.N.Sigov O.V.Fil' V.G.Lokhmachev V.N.Tsyrlov M.Ja.Rogozina T.E.Konjushenko V.D.Gusev A.V.Privalov V.A.Rachinskij A.V.Kovtunenko A.V.

(73)

Holder

Federal'Noe Gosudarstvennoe Unitarnoe Predprijatie Institut Sinteticheskogo Kauchuka Im. Akademika S.V.Lebedeva"

METHOD FOR ISOLATION OF BUTADIENE-STYRENE (METHYL-STYRENE) AND BUTADIENE RUBBERS FROM LATEXES Russian patent published in 2002 - IPC

Abstract RU 2186072 C1

FIELD: rubber industry. SUBSTANCE: to isolate rubbers, organic coagulant in acid medium is used, said coagulant being product of interaction of polyethylene polyamine with tall oil or with colophony, or with fatty acids et weight ratio (0.8-1.2):1. Agent is added in amounts going from 0.05 to 0.50% on the weight of rubber to be isolated. When performing isolation of oil-filled rubbers, after addition of organic coagulant to latex, a mineral salt in amounts between 5 and 120 kg per 1 t rubber is added to suppress tackiness of crumb. Rubber is finally separated from serum. EFFECT: avoided drainage of biologically undegradable leukanol into natural reservoirs and considerable reduced consumption of mineral salts in case of isolation of oil-filled rubbers. 2 cl, 2 tbl, 14 ex

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RU 2 186 072 C1

Authors

Papkov V.N.

Sigov O.V.

Fil' V.G.

Lokhmachev V.N.

Tsyrlov M.Ja.

Rogozina T.E.

Konjushenko V.D.

Gusev A.V.

Privalov V.A.

Rachinskij A.V.

Kovtunenko A.V.

Dates

2002-07-27—Published

2000-12-04—Filed