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2 019 538

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C1

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Application

3099765/04, 1984-10-25

(22)

Actual filing date

1984-10-25

(45)

Published

1994-09-15

(72)

Inventor

Вarabanov V.G.No L.V.Ryleev G.I.Zotikov V.S.Аl'Terman V.В.Semerikova I.А.Оzol S.I.Zajtsev S.А.Volkov G.V.Limonova L.Р.Мasljakov А.I.Utkina I.М.Тsarev V.А.Рlatsev V.Т.Мitin Р.V.

(73)

Holder

Nauchno-Proizvodstvennoe Ob"Edinenie Institut Prikladnoj Khimii"

PROCESS FOR PREPARING TETRAFLUOROETHYLENE Russian patent published in 1994 - IPC

Abstract RU 2019538 C1

FIELD: preparation of fluoroplastic such as polytetrafluoroethylene. SUBSTANCE: thermal decomposition of difluorochloromethane at 650-850 C in the presence of steam in a reactor made of a chromium-nickel alloy. The inner surface of the reactor is pretreated with a stream of steam at 750-950 C for 3-6 hr at a steam flow rate of (1-5)10-2 kg/m2. The process is made simplified due to a shorter induction period of the reaction and passivation of the inner surface of the reactor. EFFECT: improved properties of the tetrafluoroethylene. 2 tbl

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RU 2 019 538 C1

Authors

Вarabanov V.G.

No L.V.

Ryleev G.I.

Zotikov V.S.

Аl'Terman V.В.

Semerikova I.А.

Оzol S.I.

Zajtsev S.А.

Volkov G.V.

Limonova L.Р.

Мasljakov А.I.

Utkina I.М.

Тsarev V.А.

Рlatsev V.Т.

Мitin Р.V.

Dates

1994-09-15—Published

1984-10-25—Filed

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