GB1570741A - Process for teh production of diisocyanatodiphenyl methaneisomers with an adjusted content of chlorine compounds - Google Patents

Process for teh production of diisocyanatodiphenyl methaneisomers with an adjusted content of chlorine compounds Download PDF

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Publication number
GB1570741A
GB1570741A GB2851477A GB2851477A GB1570741A GB 1570741 A GB1570741 A GB 1570741A GB 2851477 A GB2851477 A GB 2851477A GB 2851477 A GB2851477 A GB 2851477A GB 1570741 A GB1570741 A GB 1570741A
Authority
GB
United Kingdom
Prior art keywords
methane
diisocyanatodiphenyl methane
ppm
diisocyanatodiphenyl
fraction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2851477A
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English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer AG
Original Assignee
Bayer AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bayer AG filed Critical Bayer AG
Publication of GB1570741A publication Critical patent/GB1570741A/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C263/00Preparation of derivatives of isocyanic acid
    • C07C263/18Separation; Purification; Stabilisation; Use of additives
    • C07C263/20Separation; Purification

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
GB2851477A 1976-07-10 1977-07-07 Process for teh production of diisocyanatodiphenyl methaneisomers with an adjusted content of chlorine compounds Expired GB1570741A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762631168 DE2631168B2 (de) 1976-07-10 1976-07-10 Verfahren zur Herstellung von Diisocyanatodiphenylmethan-Isomeren mit einem eingestellten Gehalt an Chlorverbindungen

Publications (1)

Publication Number Publication Date
GB1570741A true GB1570741A (en) 1980-07-09

Family

ID=5982715

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2851477A Expired GB1570741A (en) 1976-07-10 1977-07-07 Process for teh production of diisocyanatodiphenyl methaneisomers with an adjusted content of chlorine compounds

Country Status (6)

Country Link
JP (1) JPS539750A (enrdf_load_stackoverflow)
BE (1) BE856617A (enrdf_load_stackoverflow)
DE (1) DE2631168B2 (enrdf_load_stackoverflow)
ES (1) ES460560A1 (enrdf_load_stackoverflow)
FR (1) FR2357532A1 (enrdf_load_stackoverflow)
GB (1) GB1570741A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6222066B1 (en) 1999-03-30 2001-04-24 Bayer Aktiengesellschaft Process for decreasing the chlorine content of organic isocyanates
US6391161B1 (en) 1999-03-30 2002-05-21 Bayer Aktiengesellschaft Method for reducing the chlorine content of low molecular weight isocyanates
CN100434417C (zh) * 2004-02-04 2008-11-19 拜尔材料科学股份公司 非常纯的2,4'-亚甲基二苯基二异氰酸酯的生产方法
US11613518B2 (en) 2017-12-14 2023-03-28 Sulzer Management Ag Plant and method for purifying an isomeric monomer

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54103415A (en) * 1978-01-31 1979-08-14 Ricoh Kk Lens bonding
JPS54102321A (en) * 1978-01-31 1979-08-11 Ricoh Kk Removing bubbles in lens bonding
JPS54102320A (en) * 1978-01-31 1979-08-11 Ricoh Kk Lens bonding and apparatus therefor
DE2935318A1 (de) * 1979-08-31 1981-03-26 Bayer Ag, 51373 Leverkusen Neue diisocyanate bzw. diisocyanatgemische der diphenylmethanreihe, verfahren zu ihrer herstellung, sowie ihre verwendung als aufbaukomponente bei der herstellung von polyurethankunststoffen nach dem isocyanat-polyadditionsverfahren
JPH02311452A (ja) * 1989-05-26 1990-12-27 Daicel Chem Ind Ltd ジイソシアネート化合物
JP2875877B2 (ja) * 1990-10-23 1999-03-31 三井化学株式会社 メチレン架橋ポリフェニレンポリイソシアネートの製造方法
EP1475367B1 (de) * 2003-05-08 2010-07-07 Bayer MaterialScience AG Verfahren zur Destillation eines Gemisches isomerer Diisocyanatodiphenylmethane
DE102005004170A1 (de) * 2005-01-29 2006-08-03 Bayer Materialscience Ag Verfahren zur Destillation eines Gemisches isomerer Diisocyanatodiphenylmethane
DE102005026864A1 (de) 2005-06-10 2006-12-14 Bayer Materialscience Ag Verfahren zur Herstellung von 4,4'-Diphenylmethandiisocyanat
DE102005053065A1 (de) * 2005-11-04 2007-05-10 Basf Ag Verfahren zur Herstellung von Polyisocyanatgemischen
HUE030678T2 (hu) 2010-11-17 2017-05-29 Basf Se Eljárás 4,4'-metilén-difenil-diizocianátot tartalmazó keverékek tisztítására
CN103298781B (zh) 2010-11-17 2015-04-22 巴斯夫欧洲公司 制备亚甲基二苯基二异氰酸酯的方法
US8907124B2 (en) 2010-11-17 2014-12-09 Basf Se Process for preparing methylenedi(phenyl isocyanate)
EP2640695B1 (de) * 2010-11-17 2015-01-07 Basf Se Verfahren zur aufreinigung von 4,4'-methylendiphenyldiisocyanat enthaltenden mischungen
US9505711B2 (en) 2010-11-17 2016-11-29 Basf Se Method for purifying mixtures comprising 4,4′-methylenediphenyl diisocyanate
JP2015010183A (ja) * 2013-06-28 2015-01-19 旭化成ケミカルズ株式会社 ジイソシアネート組成物
CN107207422B (zh) 2015-01-30 2020-12-11 巴斯夫欧洲公司 低副产物的多亚苯基多亚甲基多异氰酸酯

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3219678A (en) * 1963-02-28 1965-11-23 Olin Mathieson Process for reducing the hydrolyzable chlorine content of organic isocyanates
DE1805957A1 (de) * 1967-10-31 1969-06-26 Takeda Chemical Industries Ltd Verfahren zur Reinigung von Xylylendiisocyanat
GB1398975A (en) * 1971-08-16 1975-06-25 Ici Ltd Heat treatment and distillation of methylene bridged polyphenyl polyisocyanates
GB1384065A (en) * 1971-11-30 1975-02-19 Ici Ltd Process for the purification of organic isocyanates
US3853936A (en) * 1973-02-05 1974-12-10 Olin Corp Process for distillation of toluene diisocyanate
US3912600A (en) * 1974-05-09 1975-10-14 Upjohn Co Recovery of polymethylene polyphenyl polyisocyanate from a phoshenosed polyamine feed

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6222066B1 (en) 1999-03-30 2001-04-24 Bayer Aktiengesellschaft Process for decreasing the chlorine content of organic isocyanates
US6391161B1 (en) 1999-03-30 2002-05-21 Bayer Aktiengesellschaft Method for reducing the chlorine content of low molecular weight isocyanates
CN100434417C (zh) * 2004-02-04 2008-11-19 拜尔材料科学股份公司 非常纯的2,4'-亚甲基二苯基二异氰酸酯的生产方法
CN101117375B (zh) * 2004-02-04 2010-11-24 拜尔材料科学股份公司 聚氨酯和/或预聚物的生产方法
KR101142714B1 (ko) 2004-02-04 2012-05-03 바이엘 머티리얼사이언스 아게 매우 순수한 2,4'-메틸렌디페닐 디이소시아네이트의 제조방법
US11613518B2 (en) 2017-12-14 2023-03-28 Sulzer Management Ag Plant and method for purifying an isomeric monomer

Also Published As

Publication number Publication date
DE2631168B2 (de) 1979-03-08
FR2357532B1 (enrdf_load_stackoverflow) 1980-10-17
ES460560A1 (es) 1978-05-16
JPS539750A (en) 1978-01-28
DE2631168A1 (de) 1978-01-12
BE856617A (fr) 1978-01-09
FR2357532A1 (fr) 1978-02-03

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PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee