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2 131 870

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Application

98111713/04, 1998-06-17

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Start date

1998-06-17

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Actual filing date

1998-06-17

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Published

1999-06-20

(72)

Inventor

Gerasimova N.P.Nozhnin N.A.Alov E.M.Kobylinskij D.B.Moskvichev Ju.A.

(73)

Holder

Jaroslavskij Gosudarstvennyj Tekhnicheskij Universitet

METHOD OF PREPARING HALOGEN- AND/OR ALKYL SUBSTITUTED DIARYL-SULFONES Russian patent published in 1999 - IPC

Abstract RU 2131870 C1

FIELD: chemistry of polymers, more particularly manufacture of thermostable polymeric materials, semiproducts for synthesis of dyes, tanning agents and pharmaceutical materials. SUBSTANCE: method comprises reacting aromatic hydrocarbons with arenesulfonyl chlorides in the presence of heterogeneous alumooxide catalyst containing 1.2 wt % of silicon oxide. Catalyst is used in amount of 10-3 wt % based on reaction mixture weight. Reaction is carried out at 140-180 C and aromatic hydrocarbon to arenesulfonyl chloride molar ratio of 2: 10: 1. EFFECT: smaller amount of acid waste, simplified isolation and purification of the desired products, and improved quality of sulfones. 5 ex

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RU 2 131 870 C1

Authors

Gerasimova N.P.

Nozhnin N.A.

Alov E.M.

Kobylinskij D.B.

Moskvichev Ju.A.

Dates

1999-06-20—Published

1998-06-17—Filed

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