CH395958A - Process for the purification of phthalic acids, in particular terephthalic acid - Google Patents
Process for the purification of phthalic acids, in particular terephthalic acidInfo
- Publication number
- CH395958A CH395958A CH352260A CH352260A CH395958A CH 395958 A CH395958 A CH 395958A CH 352260 A CH352260 A CH 352260A CH 352260 A CH352260 A CH 352260A CH 395958 A CH395958 A CH 395958A
- Authority
- CH
- Switzerland
- Prior art keywords
- purification
- terephthalic acid
- phthalic acids
- particular terephthalic
- phthalic
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/487—Separation; Purification; Stabilisation; Use of additives by treatment giving rise to chemical modification
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Polyesters Or Polycarbonates (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US80410459A | 1959-04-06 | 1959-04-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH395958A true CH395958A (en) | 1965-07-31 |
Family
ID=25188192
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH352260A CH395958A (en) | 1959-04-06 | 1960-03-29 | Process for the purification of phthalic acids, in particular terephthalic acid |
Country Status (4)
Country | Link |
---|---|
CH (1) | CH395958A (en) |
DE (1) | DE1140922B (en) |
GB (1) | GB881460A (en) |
NL (1) | NL250177A (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1050312A (en) * | 1964-05-13 | |||
US6054610A (en) | 1995-06-07 | 2000-04-25 | Hfm International, Inc. | Method and apparatus for preparing purified terephthalic acid and isophthalic acid from mixed xylenes |
US5767311A (en) | 1995-06-07 | 1998-06-16 | Glitsch International, Inc. | Method and apparatus for preparing purified terephtalic acid |
US5929274A (en) | 1995-06-07 | 1999-07-27 | Hfm International, Inc. | Method to reduce carboxybenzaldehyde isomers in terephthalic acid or isophthalic acid |
US6013835A (en) | 1995-06-07 | 2000-01-11 | Hfm International, Inc. | Method and apparatus for preparing purified terephthalic acid |
-
0
- NL NL250177D patent/NL250177A/xx unknown
-
1960
- 1960-03-10 GB GB852360A patent/GB881460A/en not_active Expired
- 1960-03-29 CH CH352260A patent/CH395958A/en unknown
- 1960-04-05 DE DEC21139A patent/DE1140922B/en active Pending
Also Published As
Publication number | Publication date |
---|---|
GB881460A (en) | 1961-11-01 |
DE1140922B (en) | 1962-12-13 |
NL250177A (en) |
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