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BR9200378A - Processo para preparacao de suportes de destilacao de tolueno diisocianato reativos e de viscosidade estavel e tolueno diisocianato tendo niveis de cloretos hidrolisaveis reduzidos - Google Patents

Processo para preparacao de suportes de destilacao de tolueno diisocianato reativos e de viscosidade estavel e tolueno diisocianato tendo niveis de cloretos hidrolisaveis reduzidos

Info

Publication number
BR9200378A
BR9200378A BR929200378A BR9200378A BR9200378A BR 9200378 A BR9200378 A BR 9200378A BR 929200378 A BR929200378 A BR 929200378A BR 9200378 A BR9200378 A BR 9200378A BR 9200378 A BR9200378 A BR 9200378A
Authority
BR
Brazil
Prior art keywords
toluene
diesocianate
diisocianate
reactive
supports
Prior art date
Application number
BR929200378A
Other languages
English (en)
Inventor
Rory D Daussin
Steven B Lowenkron
A Van Kent
Original Assignee
Dow Chemical Co
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
Priority claimed from US07/647,328 external-priority patent/US5185384A/en
Priority claimed from US07/727,707 external-priority patent/US5216042A/en
Application filed by Dow Chemical Co filed Critical Dow Chemical Co
Publication of BR9200378A publication Critical patent/BR9200378A/pt

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
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C265/00—Derivatives of isocyanic acid
    • C07C265/14—Derivatives of isocyanic acid containing at least two isocyanate groups bound to the same carbon skeleton

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
BR929200378A 1991-01-28 1992-01-27 Processo para preparacao de suportes de destilacao de tolueno diisocianato reativos e de viscosidade estavel e tolueno diisocianato tendo niveis de cloretos hidrolisaveis reduzidos BR9200378A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/647,328 US5185384A (en) 1991-01-28 1991-01-28 Method for reducing hydrolyzable chloride in toluene diisocyanate
US07/727,707 US5216042A (en) 1991-07-10 1991-07-10 Process for preparing viscosity-stabilized reactive toluene diisocyanate distillation residues and blends thereof

Publications (1)

Publication Number Publication Date
BR9200378A true BR9200378A (pt) 1992-10-13

Family

ID=27095131

Family Applications (1)

Application Number Title Priority Date Filing Date
BR929200378A BR9200378A (pt) 1991-01-28 1992-01-27 Processo para preparacao de suportes de destilacao de tolueno diisocianato reativos e de viscosidade estavel e tolueno diisocianato tendo niveis de cloretos hidrolisaveis reduzidos

Country Status (6)

Country Link
EP (1) EP0497538A3 (pt)
JP (1) JPH051014A (pt)
KR (1) KR920014768A (pt)
CN (1) CN1064074A (pt)
BR (1) BR9200378A (pt)
MX (1) MX9200336A (pt)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1073633C (zh) * 1999-09-29 2001-10-24 冶金工业部钢铁研究总院 炼铁用球团烧结矿的制造方法

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1371634A1 (en) * 2002-06-14 2003-12-17 Bayer Ag Process for the purification of mixtures of toluenediisocyanate
EP1371633A1 (en) * 2002-06-14 2003-12-17 Bayer Ag Process for the purification of mixtures of toluenediisocyanate incorporating a dividing-wall distillation column
DE102004063221A1 (de) * 2004-12-22 2006-07-13 Lanxess Deutschland Gmbh Verfahren zur Reinigung organischer Isocyanate
EP3036217B1 (de) * 2013-08-19 2017-06-28 Covestro Deutschland AG Verfahren zur gewinnung von organischen isocyanaten aus destillationsrückständen der isocyanatherstellung
CN106279623A (zh) * 2015-06-01 2017-01-04 科思创聚合物（中国）有限公司 异氰酸酯组合物以及由其制备的聚氨酯硬泡
WO2018023793A1 (en) * 2016-08-05 2018-02-08 Covestro Deutschland Ag Polyurethane foams comprising mixture obtained in production of tolylene diisocyanate(tdi) as bottoms residue
KR101842254B1 (ko) * 2017-05-17 2018-03-27 에스케이씨 주식회사 안정성 및 반응성이 개선된 자이릴렌디이소시아네이트 조성물, 및 이를 이용한 광학 렌즈
CN112239416B (zh) * 2020-11-02 2022-09-16 万华化学集团股份有限公司 一种低水解氯和水解溴的甲苯二异氰酸酯的制备工艺
JP7542145B2 (ja) 2020-12-01 2024-08-29 万華化学集団股▲フン▼有限公司 ポリイソシアネート組成物、その調製方法および使用
CN112592457B (zh) * 2020-12-01 2023-04-07 万华化学集团股份有限公司 一种多异氰酸酯组合物及其制备方法和应用
CN114045177B (zh) * 2021-10-18 2023-03-28 万华化学集团股份有限公司 Tdi稳定化焦油的生产及利用方法
CN114315648B (zh) * 2022-01-11 2023-03-03 黎明化工研究设计院有限责任公司 一种降低异氰酸酯中水解氯含量的方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1080717A (en) * 1965-07-30 1967-08-23 Ici Ltd Purification of crude organic polyisocyanates
GB1112450A (en) * 1965-11-11 1968-05-08 Olin Mathieson Purification of organic isocyanates
GB1114690A (en) * 1966-05-26 1968-05-22 Ici Ltd Stabilisation process
GB1384065A (en) * 1971-11-30 1975-02-19 Ici Ltd Process for the purification of organic isocyanates

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1073633C (zh) * 1999-09-29 2001-10-24 冶金工业部钢铁研究总院 炼铁用球团烧结矿的制造方法

Also Published As

Publication number Publication date
JPH051014A (ja) 1993-01-08
KR920014768A (ko) 1992-08-25
MX9200336A (es) 1992-10-01
EP0497538A2 (en) 1992-08-05
CN1064074A (zh) 1992-09-02
EP0497538A3 (en) 1993-01-13

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Legal Events

Date Code Title Description
EG Technical examination (opinion): publication of technical examination (opinion)
FC Decision: refusal