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GB1417075A - Isocyanates - Google Patents

Isocyanates

Info

Publication number
GB1417075A
GB1417075A GB5060373A GB5060373A GB1417075A GB 1417075 A GB1417075 A GB 1417075A GB 5060373 A GB5060373 A GB 5060373A GB 5060373 A GB5060373 A GB 5060373A GB 1417075 A GB1417075 A GB 1417075A
Authority
GB
United Kingdom
Prior art keywords
isocyanates
molecular sieve
aromatic
organic
aliphatic
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
GB5060373A
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 GB5060373A priority Critical patent/GB1417075A/en
Publication of GB1417075A publication Critical patent/GB1417075A/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

Landscapes

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

Abstract

1417075 Treatment of organic isocyanates IMPERIAL CHEMICAL INDUSTRIES Ltd 27 Sept 1974 [31 Oct 1973] 50603/73 Heading C2C Coloured impurities in organic isocyanates and discoloration on storage of said isocyanates are reduced by treating the isocyanates in the liquid state with a molecular sieve. The molecular sieve is preferably in pelleted form. The isocyanates may be aliphatic, aromatic, cycloaliphatic and mixed aromatic/aliphatic mono- and poly-isocyanates.
GB5060373A 1973-10-31 1973-10-31 Isocyanates Expired GB1417075A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5060373A GB1417075A (en) 1973-10-31 1973-10-31 Isocyanates

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5060373A GB1417075A (en) 1973-10-31 1973-10-31 Isocyanates

Publications (1)

Publication Number Publication Date
GB1417075A true GB1417075A (en) 1975-12-10

Family

ID=10456588

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5060373A Expired GB1417075A (en) 1973-10-31 1973-10-31 Isocyanates

Country Status (1)

Country Link
GB (1) GB1417075A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4061662A (en) * 1975-08-28 1977-12-06 W. R. Grace & Co. Removal of unreacted tolylene diisocyanate from urethane prepolymers
US4661627A (en) * 1986-08-19 1987-04-28 The Dow Chemical Company Method for scavenging acidic impurities from polymeric isocyanates

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4061662A (en) * 1975-08-28 1977-12-06 W. R. Grace & Co. Removal of unreacted tolylene diisocyanate from urethane prepolymers
US4661627A (en) * 1986-08-19 1987-04-28 The Dow Chemical Company Method for scavenging acidic impurities from polymeric isocyanates

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee