BR9504058A - Processo para a redução do teor de ferro em diisocianato de difenilmetano ou em misturas de poliisocianatos da série de diisocianato de difenilmetano - Google Patents
Processo para a redução do teor de ferro em diisocianato de difenilmetano ou em misturas de poliisocianatos da série de diisocianato de difenilmetanoInfo
- Publication number
- BR9504058A BR9504058A BR9504058A BR9504058A BR9504058A BR 9504058 A BR9504058 A BR 9504058A BR 9504058 A BR9504058 A BR 9504058A BR 9504058 A BR9504058 A BR 9504058A BR 9504058 A BR9504058 A BR 9504058A
- Authority
- BR
- Brazil
- Prior art keywords
- diphenylmethane diisocyanate
- reducing
- iron content
- polyisocyanate mixtures
- series
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C263/00—Preparation of derivatives of isocyanic acid
- C07C263/18—Separation; Purification; Stabilisation; Use of additives
- C07C263/20—Separation; Purification
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/088—Removal of water or carbon dioxide from the reaction mixture or reaction components
- C08G18/0885—Removal of water or carbon dioxide from the reaction mixture or reaction components using additives, e.g. absorbing agents
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Polyurethanes Or Polyureas (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4433262A DE4433262A1 (de) | 1994-09-19 | 1994-09-19 | Verfahren zur Einstellung eines bestimmten Gehaltes an Eisen in Diphenylmethandiisocyanat oder in Polyisocyanat-Gemischen der Diphenylmethandiisocyanat-Reihe |
Publications (1)
Publication Number | Publication Date |
---|---|
BR9504058A true BR9504058A (pt) | 1996-09-24 |
Family
ID=6528541
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR9504058A BR9504058A (pt) | 1994-09-19 | 1995-09-18 | Processo para a redução do teor de ferro em diisocianato de difenilmetano ou em misturas de poliisocianatos da série de diisocianato de difenilmetano |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0702000B1 (pt) |
JP (1) | JP3881046B2 (pt) |
BR (1) | BR9504058A (pt) |
CA (1) | CA2158414A1 (pt) |
DE (2) | DE4433262A1 (pt) |
ES (1) | ES2127444T3 (pt) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002003462A (ja) * | 2000-06-20 | 2002-01-09 | Kyowa Yuka Co Ltd | リジンエステルトリイソシアネートの製造法 |
JP4792736B2 (ja) * | 2004-12-09 | 2011-10-12 | 日本ポリウレタン工業株式会社 | 有機ポリイソシアネート組成物、該有機ポリイソシアネートの製造方法、接着剤組成物及び塗料用組成物 |
CN101516958B (zh) * | 2006-08-22 | 2012-05-30 | 日本聚氨酯工业株式会社 | 氨基甲酸酯改性二苯甲烷类异氰酸酯组合物 |
JP5258327B2 (ja) * | 2008-02-28 | 2013-08-07 | 東ソー株式会社 | ポリイソシアネートの製造方法 |
JP2010047501A (ja) * | 2008-08-20 | 2010-03-04 | Nippon Polyurethane Ind Co Ltd | イソシアネート混合物の製造前処理方法 |
JP2010047503A (ja) * | 2008-08-20 | 2010-03-04 | Nippon Polyurethane Ind Co Ltd | イソシアネート混合物の製造方法 |
CN107021920B (zh) * | 2016-08-12 | 2019-07-23 | 万华化学集团股份有限公司 | 一种异氰酸酯聚合催化剂及其制备方法,及其用于制备聚异氰酸酯的方法 |
CN107754755B (zh) * | 2017-10-20 | 2020-04-10 | 万华化学(宁波)有限公司 | 脱除粗异氰酸酯产品中铁分的吸附剂及其制备方法和脱除方法 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2207671A (en) * | 1987-08-07 | 1989-02-08 | Basf Corp | Process for the removal of color-forming trace impurities from methylene bis (phenylisocyanates) |
-
1994
- 1994-09-19 DE DE4433262A patent/DE4433262A1/de not_active Withdrawn
-
1995
- 1995-09-06 ES ES95113969T patent/ES2127444T3/es not_active Expired - Lifetime
- 1995-09-06 EP EP95113969A patent/EP0702000B1/de not_active Expired - Lifetime
- 1995-09-06 DE DE59504885T patent/DE59504885D1/de not_active Expired - Fee Related
- 1995-09-15 CA CA002158414A patent/CA2158414A1/en not_active Abandoned
- 1995-09-18 BR BR9504058A patent/BR9504058A/pt not_active IP Right Cessation
- 1995-09-18 JP JP26198195A patent/JP3881046B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0702000B1 (de) | 1999-01-20 |
DE4433262A1 (de) | 1996-03-21 |
JPH0899946A (ja) | 1996-04-16 |
EP0702000A1 (de) | 1996-03-20 |
DE59504885D1 (de) | 1999-03-04 |
ES2127444T3 (es) | 1999-04-16 |
CA2158414A1 (en) | 1996-03-20 |
JP3881046B2 (ja) | 2007-02-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FF | Decision: intention to grant | ||
FG9A | Patent or certificate of addition granted | ||
B24C | Patent annual fee: request for for restoration |
Free format text: REFERENTE 10A., 11A., 12A., 13A., E 14A. ANUIDADES. |
|
B21F | Lapse acc. art. 78, item iv - on non-payment of the annual fees in time |
Free format text: REFERENTE AO DESPACHO 24.3 NA RPI 2050 DE 20/04/2010, E COMPROVAR O RECOLHIMENTO DA 15A,16A,17A E 18A ANUIDADES. |