IT8220615A0 - Metodo per fare bis(eteri anidridi) aromatiche. - Google Patents
Metodo per fare bis(eteri anidridi) aromatiche.Info
- Publication number
- IT8220615A0 IT8220615A0 IT8220615A IT2061582A IT8220615A0 IT 8220615 A0 IT8220615 A0 IT 8220615A0 IT 8220615 A IT8220615 A IT 8220615A IT 2061582 A IT2061582 A IT 2061582A IT 8220615 A0 IT8220615 A0 IT 8220615A0
- Authority
- IT
- Italy
- Prior art keywords
- aromatic bis
- making aromatic
- ether anhydrides
- anhydrides
- ether
- Prior art date
Links
- -1 ETHER ANHYDRIDES Chemical class 0.000 title 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 title 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/54—Preparation of carboxylic acid anhydrides
- C07C51/567—Preparation of carboxylic acid anhydrides by reactions not involving carboxylic acid anhydride groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/54—Preparation of carboxylic acid anhydrides
- C07C51/573—Separation; Purification; Stabilisation; Use of additives
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Indole Compounds (AREA)
- Catalysts (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Furan Compounds (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/253,446 US4340545A (en) | 1981-04-13 | 1981-04-13 | Method for making aromatic bis(ether anhydrides) |
Publications (2)
Publication Number | Publication Date |
---|---|
IT8220615A0 true IT8220615A0 (it) | 1982-04-06 |
IT1150785B IT1150785B (it) | 1986-12-17 |
Family
ID=22960299
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT20615/82A IT1150785B (it) | 1981-04-13 | 1982-04-06 | Metodo per fare bis(eteri anidridi) aromatiche |
Country Status (9)
Country | Link |
---|---|
US (1) | US4340545A (it) |
JP (1) | JPS57181074A (it) |
AU (1) | AU8234982A (it) |
CA (1) | CA1173847A (it) |
DE (1) | DE3212132A1 (it) |
FR (1) | FR2503707B1 (it) |
GB (1) | GB2096602A (it) |
IT (1) | IT1150785B (it) |
NL (1) | NL189000C (it) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4340545A (en) * | 1981-04-13 | 1982-07-20 | General Electric Company | Method for making aromatic bis(ether anhydrides) |
US4543416A (en) * | 1983-02-01 | 1985-09-24 | General Electric Company | Di(phthalic anhydride) derivatives of di(disubstituted phenol) sulfones |
US4571425A (en) * | 1985-02-14 | 1986-02-18 | General Electric Company | Method for making aromatic bis(ether anhydride) |
JP2545510Y2 (ja) * | 1992-02-14 | 1997-08-25 | 古河電気工業株式会社 | 標識の周縁部構造 |
US6528663B1 (en) | 2001-12-05 | 2003-03-04 | General Electric Company | Methods for the preparation of 4-chlorophthalic anhydride |
US6498224B1 (en) | 2001-12-05 | 2002-12-24 | General Electric Company | Methods for the preparation poly(etherimide)s |
US6576770B1 (en) | 2001-12-05 | 2003-06-10 | General Electric Company | Preparation of substituted phthalic anhydrides and substituted phthalimides |
US6710187B2 (en) * | 2002-05-14 | 2004-03-23 | General Electric Company | Process to isolate dianhydrides |
US6881815B2 (en) * | 2002-09-25 | 2005-04-19 | General Electric Company | Method for the preparation poly(etherimide)s |
US20060029671A1 (en) * | 2004-08-06 | 2006-02-09 | Grain Processing Corporation | Tablet coating composition |
US8080671B2 (en) | 2008-05-23 | 2011-12-20 | Sabic Innovative Plastics Ip B.V. | Production of low color polyetherimides |
WO2017132656A1 (en) | 2016-01-29 | 2017-08-03 | Sabic Global Technologies B.V. | Thermoplastic polyimides, method for the manufacture thereof, and articles prepared therefrom |
WO2017189293A1 (en) * | 2016-04-27 | 2017-11-02 | Sabic Global Technologies B.V. | Method for isolation of a dianhydride and dianhydrides prepared by the method |
CN106279085B (zh) * | 2016-08-17 | 2018-07-10 | 万华化学集团股份有限公司 | 一种混合异构双醚四甲酸二酐的制备方法 |
WO2019217257A1 (en) | 2018-05-07 | 2019-11-14 | Sabic Global Technologies B.V. | Method for isolation of an aromatic dianhydride and aromatic dianhydrides prepared by the method |
WO2019222077A1 (en) * | 2018-05-14 | 2019-11-21 | Sabic Global Technologies B.V. | Method for isolation of a dianhydride and dianhydrides prepared by the method |
EP3802506B1 (en) | 2018-06-04 | 2022-06-08 | SHPP Global Technologies B.V. | Method for producing an aromatic dianhydride |
WO2019245898A1 (en) * | 2018-06-18 | 2019-12-26 | Sabic Global Technologies B.V. | Method for isolation of an aromatic dianhydride and aromatic dianhydrides prepared by the method |
WO2021113491A1 (en) | 2019-12-03 | 2021-06-10 | Shpp Global Technologies B.V. | Polyimide varnish from high purity bisphenol a dianhydride and articles prepared therefrom |
WO2021113489A1 (en) | 2019-12-03 | 2021-06-10 | Shpp Global Technologies B.V. | Polyamic acid varnish from high purity bisphenol a dianhydride and articles prepared therefrom |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3310573A (en) * | 1963-06-17 | 1967-03-21 | Du Pont | Diaryl fluoro compounds |
US3957862A (en) * | 1973-03-30 | 1976-05-18 | General Electric Company | Method of making aromatic bis(ether ortho phthalic acid)s |
US3879428A (en) * | 1973-03-30 | 1975-04-22 | Gen Electric | Method for making aromatic bis(ether anhydride)s |
US4116980A (en) * | 1976-10-04 | 1978-09-26 | General Electric Company | Method for making aromatic bis (ether phthalic acid) or aromatic bis (ether anhydride)s |
US4128574A (en) * | 1976-10-04 | 1978-12-05 | General Electric Company | Method for making organic polycarboxylic acids |
US4318857A (en) * | 1981-04-03 | 1982-03-09 | General Electric Company | Method for making aromatic bis (ether anhydrides) |
US4329291A (en) * | 1981-04-03 | 1982-05-11 | General Electric Company | Method for making aromatic bis(ether anhydride)s |
US4340545A (en) * | 1981-04-13 | 1982-07-20 | General Electric Company | Method for making aromatic bis(ether anhydrides) |
DE3212166A1 (de) * | 1982-04-01 | 1983-10-06 | Walter Frenkel | Digitaluhr-steuerung mit lichtleitkabel, auch fuer kurzzeitmesser |
-
1981
- 1981-04-13 US US06/253,446 patent/US4340545A/en not_active Expired - Lifetime
-
1982
- 1982-03-19 CA CA000398904A patent/CA1173847A/en not_active Expired
- 1982-03-26 GB GB8208939A patent/GB2096602A/en not_active Withdrawn
- 1982-04-01 DE DE19823212132 patent/DE3212132A1/de not_active Ceased
- 1982-04-05 AU AU82349/82A patent/AU8234982A/en not_active Abandoned
- 1982-04-06 IT IT20615/82A patent/IT1150785B/it active
- 1982-04-07 NL NLAANVRAGE8201489,A patent/NL189000C/xx not_active IP Right Cessation
- 1982-04-12 JP JP57059812A patent/JPS57181074A/ja active Granted
- 1982-04-13 FR FR8206328A patent/FR2503707B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB2096602A (en) | 1982-10-20 |
FR2503707B1 (fr) | 1985-08-09 |
JPH0428709B2 (it) | 1992-05-15 |
NL189000C (nl) | 1992-12-01 |
FR2503707A1 (fr) | 1982-10-15 |
AU8234982A (en) | 1982-10-21 |
US4340545A (en) | 1982-07-20 |
IT1150785B (it) | 1986-12-17 |
JPS57181074A (en) | 1982-11-08 |
CA1173847A (en) | 1984-09-04 |
NL8201489A (nl) | 1982-11-01 |
DE3212132A1 (de) | 1982-12-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19950426 |