MX173725B - Procedimiento para destilar concentrados brutos de isocianato - Google Patents

Procedimiento para destilar concentrados brutos de isocianato

Info

Publication number
MX173725B
MX173725B MX019726A MX1972690A MX173725B MX 173725 B MX173725 B MX 173725B MX 019726 A MX019726 A MX 019726A MX 1972690 A MX1972690 A MX 1972690A MX 173725 B MX173725 B MX 173725B
Authority
MX
Mexico
Prior art keywords
isocyanate
concentrates
residue
liquid
mixture
Prior art date
Application number
MX019726A
Other languages
English (en)
Inventor
Louis A Renbaum
Stephen A Dibiase
Larry W Arndt
Gregory M Stansfield
Original Assignee
Lubrizol Corp Y Mobay Corp
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 Lubrizol Corp Y Mobay Corp filed Critical Lubrizol Corp Y Mobay Corp
Publication of MX173725B publication Critical patent/MX173725B/es

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)
  • Lubricants (AREA)
  • Apparatus For Radiation Diagnosis (AREA)

Abstract

La presente invención se refiere a un procedimiento para la separación y recuperación de monómeros de isocianato a patir de consentrados de isocianato que se forman durante la producción de isocianatos y que comprenden un monómero de isocianato volátil y subproductos, que comprende las etapas de: (A) preparar una mezcla que comprende (A-1) el consentrado de isocianato; y (A-2) una solución oleosa que comprende: (A-2-a) una cantidad mayoritaria de un aceite hidrocarbonado, y (A-2-b) una cantidad minoritaria de al menos un dispersante sin cenizas; y (B) calentar la mezcla a una temperatura elevada, con lo que destila y se recupera el monómero de isocianato, quedando un residuo líquido.
MX019726A 1989-03-03 1990-02-21 Procedimiento para destilar concentrados brutos de isocianato MX173725B (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US31901189A 1989-03-03 1989-03-03
PCT/US1990/000815 WO1990009990A1 (en) 1989-03-03 1990-02-21 A process for distillation of crude isocyanate concentrates

Publications (1)

Publication Number Publication Date
MX173725B true MX173725B (es) 1994-03-23

Family

ID=23240506

Family Applications (1)

Application Number Title Priority Date Filing Date
MX019726A MX173725B (es) 1989-03-03 1990-02-21 Procedimiento para destilar concentrados brutos de isocianato

Country Status (12)

Country Link
EP (1) EP0425596B1 (es)
JP (1) JP3001970B2 (es)
KR (1) KR920700195A (es)
AT (1) ATE122336T1 (es)
AU (1) AU638000B2 (es)
BR (1) BR9005679A (es)
CA (1) CA2028819A1 (es)
DE (1) DE69019295T2 (es)
ES (2) ES2058036A6 (es)
MX (1) MX173725B (es)
NO (1) NO173987C (es)
WO (1) WO1990009990A1 (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4142769A1 (de) * 1991-12-23 1993-06-24 Bayer Hispania Ind S A Verfahren zur herstellung von isocyanaten und aufarbeitung des rueckstandes
CN114605288B (zh) * 2020-12-03 2024-02-02 万华化学集团股份有限公司 一种异氰酸酯聚合物的高效分离回收工艺及装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2810681A (en) * 1956-08-17 1957-10-22 Du Pont Chemical process
US2884359A (en) * 1956-10-31 1959-04-28 Gen Aniline & Film Corp Recovery of organic isocyanates
CA998060A (en) * 1970-05-22 1976-10-05 Carl F. Irwin Recovery of organic isocyanate
DE2846815A1 (de) * 1978-10-27 1980-05-08 Ayer Ag Verfahren zur aufarbeitung von isocyanat-destillationsrueckstaenden
DE2846814A1 (de) * 1978-10-27 1980-05-08 Bayer Ag Suspensionen von isocyanat-destillationsrueckstaenden in polyolen
US4234435A (en) * 1979-02-23 1980-11-18 The Lubrizol Corporation Novel carboxylic acid acylating agents, derivatives thereof, concentrate and lubricant compositions containing the same, and processes for their preparation

Also Published As

Publication number Publication date
EP0425596A1 (en) 1991-05-08
ES2073021T3 (es) 1995-08-01
ES2058036A6 (es) 1994-10-16
ATE122336T1 (de) 1995-05-15
DE69019295D1 (de) 1995-06-14
NO904785L (no) 1990-11-02
NO173987C (no) 1994-03-02
JP3001970B2 (ja) 2000-01-24
NO904785D0 (no) 1990-11-02
EP0425596B1 (en) 1995-05-10
WO1990009990A1 (en) 1990-09-07
KR920700195A (ko) 1992-02-19
AU5150990A (en) 1990-09-26
CA2028819A1 (en) 1990-09-04
NO173987B (no) 1993-11-22
BR9005679A (pt) 1991-08-06
DE69019295T2 (de) 1995-11-02
JPH03505217A (ja) 1991-11-14
AU638000B2 (en) 1993-06-17

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