METHOD OF CHEMICAL UTILIZATION (PROCESSING) OF POLYCHLORINATED DIPHENYLS Russian patent published in 2001 - IPC

Abstract RU 2175964 C2

FIELD: chemical industry. SUBSTANCE: described is method of chemical processing of polychlorinated diphenyl by reacting industrial polychlorinated diphenyls of general formula: wherein n+m=3-5 with polyethylene glycols in the presence of potassium and/or sodium hydroxide at elevated temperature. Polyethylene glycols are straight polyethylene glycols of general formula: H(OCH₂CH₂)_aOH, wherein a=3.13, 35, 65. Process is carried out at polychlorodiphenyl to polyglycol to alkali metal hydroxide molar ratio of 1:2-5:2-5. Decontamination of polychlorinated diphenyls gives intermediate products containing two alkoxy substituents per molecule of diphenyl. EFFECT: more efficient chemical utilization method. 5 ex, 2 tbl

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RU 2 175 964 C2

Authors

Chupakhin O.N.

Zapevalov A.Ja.

Gorbunova T.I.

Saloutin V.I.

Bershadskij V.Ja.

Dates

2001-11-20—Published

1999-08-10—Filed