Claims
- 1. A process for producing 2,4,5-trifluoroisophthalic acid which comprises hydrolyzing 2,4,5-trifluoroisophthalonitrile under conditions rendered acidic by using sulfuric acid in an amount of 3 to 20 parts by weight per part by weight of 2,4,5-trifluoroisophthalonitrile and at a concentration of 50 to 70 wt %.
Priority Claims (1)
Number |
Date |
Country |
Kind |
62-228286 |
Sep 1987 |
JPX |
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Parent Case Info
This is a divisional of application Ser. No. 07/327,495, filed Mar. 24, 1989, now abandoned, which in turn is a division of application Ser. No. 07/243,753, filed Sept. 14, 1988, now U.S. Pat. No. 4,925,966.
US Referenced Citations (7)
Foreign Referenced Citations (7)
Number |
Date |
Country |
487253 |
Oct 1952 |
CAX |
42-8020 |
Mar 1967 |
JPX |
42-23013 |
Sep 1967 |
JPX |
53-83346 |
Jul 1975 |
JPX |
58-219146 |
Dec 1983 |
JPX |
62-111942 |
May 1987 |
JPX |
2165239A |
Apr 1986 |
GBX |
Non-Patent Literature Citations (1)
Entry |
Aroskar et al., Journal of the Chemical Society, Part II, 1965, pp. 2658-2661. |
Divisions (2)
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Number |
Date |
Country |
Parent |
327495 |
Mar 1989 |
|
Parent |
243753 |
Sep 1988 |
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