GB1117066A - Distillation process for tolylene diisocyanate - Google Patents

Distillation process for tolylene diisocyanate

Info

Publication number
GB1117066A
GB1117066A GB2708466A GB2708466A GB1117066A GB 1117066 A GB1117066 A GB 1117066A GB 2708466 A GB2708466 A GB 2708466A GB 2708466 A GB2708466 A GB 2708466A GB 1117066 A GB1117066 A GB 1117066A
Authority
GB
United Kingdom
Prior art keywords
tolylene diisocyanate
distillation process
distillation
diphenylmethane
polyisocyanate
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
GB2708466A
Inventor
Henry Russell Hincklieff
Harry James Twitchett
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB2708466A priority Critical patent/GB1117066A/en
Priority to NL6708349A priority patent/NL6708349A/xx
Priority to FR110827A priority patent/FR1527588A/en
Publication of GB1117066A publication Critical patent/GB1117066A/en
Expired legal-status Critical Current

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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Tolylene diisocyanate is recovered from crude mixtures containing it by distillation in presence of a diphenylmethane-polyisocyanate, preferably in a thin-film evaporator.
GB2708466A 1966-06-17 1966-06-17 Distillation process for tolylene diisocyanate Expired GB1117066A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB2708466A GB1117066A (en) 1966-06-17 1966-06-17 Distillation process for tolylene diisocyanate
NL6708349A NL6708349A (en) 1966-06-17 1967-06-15
FR110827A FR1527588A (en) 1966-06-17 1967-06-16 Process for recovering tolylene diisocyanates by distillation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2708466A GB1117066A (en) 1966-06-17 1966-06-17 Distillation process for tolylene diisocyanate

Publications (1)

Publication Number Publication Date
GB1117066A true GB1117066A (en) 1968-06-12

Family

ID=10253925

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2708466A Expired GB1117066A (en) 1966-06-17 1966-06-17 Distillation process for tolylene diisocyanate

Country Status (2)

Country Link
GB (1) GB1117066A (en)
NL (1) NL6708349A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0046556A1 (en) * 1980-08-26 1982-03-03 Bayer Ag Diisocyanates or mixtures of diisocyanates of the diphenylmethane class, processes for their preparation, as well as their use as synthesis components in the manufacture of polyurethanes by the isocyanate-polyaddition process
CN110167913A (en) * 2017-01-18 2019-08-23 科思创德国股份有限公司 The method of diisocyanate is recycled from bottoms
WO2021148419A1 (en) * 2020-01-22 2021-07-29 Covestro Deutschland Ag Method for recovering diisocyanates from distillation residues

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0046556A1 (en) * 1980-08-26 1982-03-03 Bayer Ag Diisocyanates or mixtures of diisocyanates of the diphenylmethane class, processes for their preparation, as well as their use as synthesis components in the manufacture of polyurethanes by the isocyanate-polyaddition process
US4587058A (en) * 1980-08-26 1986-05-06 Bayer Aktiengesellschaft Diisocyanates of the diphenyl methane series and processes for the production thereof
CN110167913A (en) * 2017-01-18 2019-08-23 科思创德国股份有限公司 The method of diisocyanate is recycled from bottoms
WO2021148419A1 (en) * 2020-01-22 2021-07-29 Covestro Deutschland Ag Method for recovering diisocyanates from distillation residues

Also Published As

Publication number Publication date
NL6708349A (en) 1967-12-18

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