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2 253 656

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Application

2004114319/04, 2004-05-13

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Start date

2004-05-13

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Actual filing date

2004-05-13

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Published

2005-06-10

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Inventor

Sigov O.V.Gusev Ju.K.Papkov V.N.Panevin A.S.Lokhmachev V.N.Zeleneva O.A.Tsyrlov M.Ja.Kutuzov P.I.Nijazov N.A.Tuktarova L.A.Gusev A.V.Privalov V.A.Soldatenko A.V.Rachinskij A.V.Mazina L.A.Shevchenko A.E.Kapranchikov V.V.Charkin A.K.

(73)

Holder

Gusev Aleksandr ViktorovichSigov Oleg Vsevolodovich

METHOD OF RECOVERING SYNTHETIC RUBBERS FROM LATEXES Russian patent published in 2005 - IPC

Abstract RU 2253656 C1

FIELD: rubber industry.

SUBSTANCE: invention discloses a method for recovering synthetic rubbers from latexes stabilized by carboxylic acid soaps, which consists in action of mineral acid and organic amine coagulant on antioxidant-containing rubber latex. Organic amine coagulant is added in amount 0.01 to 1.0% in two steps: first portion constituting 50-90% of total amount of coagulant is added directly to latex and resulting mixture is stirred for at least 0.5 h at 20-70°C, after which second portion of coagulant or its mixture with mineral salt (coagulant/salt weight ratio from 1:0 to 1:15000) is fed into coagulation apparatus jointly with recycling serum at latex-to-serum weight ratio between 1:1 and 1:2. Rubber is thus obtained in the form of homogeneous porous crumb.

EFFECT: improved environmental characteristics of process due to lowered content of carboxylic acid soaps in waste water, which is also prevented to be polluted with leukanol, and accelerated drying of rubber crumb.

2 tbl, 18 ex

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RU 2 253 656 C1

Authors

Sigov O.V.

Gusev Ju.K.

Papkov V.N.

Panevin A.S.

Lokhmachev V.N.

Zeleneva O.A.

Tsyrlov M.Ja.

Kutuzov P.I.

Nijazov N.A.

Tuktarova L.A.

Gusev A.V.

Privalov V.A.

Soldatenko A.V.

Rachinskij A.V.

Mazina L.A.

Shevchenko A.E.

Kapranchikov V.V.

Charkin A.K.

Dates

2005-06-10—Published

2004-05-13—Filed

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