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2 007 387

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IPC

(21) (22)

Application

4607052/04, 1988-11-21

(22)

Actual filing date

1988-11-21

(45)

Published

1994-02-15

(72)

Inventor

Mikhalkin A.P.Vlasov V.N.Marshalkin V.N.Fomichev A.A.Gorshkova L.V.Kholomjanskij I.Ja.

(73)

Holder

Nauchno-Proizvodstvennoe Tovarishchestvo Pav"

6-[N-(2-HYDROXYHEXADECYL) -N-ACETYL] -AMINOHEXANOIC ACID OR ITS SALT AS A FLOTATION AGENT FOR PHOSPHATE ORES Russian patent published in 1994 - IPC

Abstract RU 2007387 C1

FIELD: organic chemistry. SUBSTANCE: product: 6-[N- (2-hydroxyhexadecyl) -N-acetyl] -aminohexanoic acid of the general formula C₁₄H₂₉CHOHCH₂N(COCH₃)(CH₂)₅COOH, gross-formula is C₂₄H₄₇NO₄. Yield is 86,1% . Sodium salt of C₂₄H₄₆NO₄N₂, potassium salt of C₂₄H₄₆NO₄K. Reagent 1: sodium salt of 6-[N-(2-hydroxyhexadecyl] -aminohexanoic acid. Reagent 2: (CH₃CO)₂O. Reaction condition: in the medium of benzene, at boiling for 10 h. To obtain salt synthesized acid is titrated with KOH or NaOH by potentiometry. EFFECT: improved method of synthesis. 2 tbl

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RU 2 007 387 C1

Authors

Mikhalkin A.P.

Vlasov V.N.

Marshalkin V.N.

Fomichev A.A.

Gorshkova L.V.

Kholomjanskij I.Ja.

Dates

1994-02-15—Published

1988-11-21—Filed