Azeotrope-like composition of...

Compositions – Vaporization – or expansion – refrigeration or heat or energy...

Reexamination Certificate

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C510S408000, C216S083000, C438S689000

Reexamination Certificate

active

08070975

ABSTRACT:
Provided are azeotropic and azeotrope-like compositions of 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb) and hydrogen fluoride (HF). Such azeotropic and azeotrope-like compositions are useful as intermediates in the production of 2,3,3,3-tetrafluoropropene (HFO-1234yf).

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U.S. Appl. No. 61/089,986, filed Aug. 19, 2008.
U.S. Appl. No. 61/043,451, filed Apr. 9, 2008.
U.S. Appl. No. 61/040,759, filed Mar. 31, 2008.

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