GB933449A - Nitraza diisocyanates - Google Patents

Nitraza diisocyanates

Info

Publication number
GB933449A
GB933449A GB3953360A GB3953360A GB933449A GB 933449 A GB933449 A GB 933449A GB 3953360 A GB3953360 A GB 3953360A GB 3953360 A GB3953360 A GB 3953360A GB 933449 A GB933449 A GB 933449A
Authority
GB
United Kingdom
Prior art keywords
nitraza
formula
prepared
diisocyanates
diacyl
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
GB3953360A
Inventor
Clinton Ross Vanneman
Karl Klager
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.)
Aerojet Rocketdyne Inc
Original Assignee
Aerojet General 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 Aerojet General Corp filed Critical Aerojet General Corp
Priority to GB3953360A priority Critical patent/GB933449A/en
Publication of GB933449A publication Critical patent/GB933449A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C265/00—Derivatives of isocyanic acid
    • C07C265/02—Derivatives of isocyanic acid having isocyanate groups bound to acyclic carbon atoms
    • C07C265/04—Derivatives of isocyanic acid having isocyanate groups bound to acyclic carbon atoms of a saturated carbon skeleton

Landscapes

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

Abstract

Polyurethanes useful as solid propellants are prepared by reacting nitrazo diisocyanates of the formula:- <F\1> wherein A and A1 are alkylene radicals and Z is a nitroalkylene radical, with a polyalcohol, e.g. 5,5-dinitro-1,2-hexanediol, in the presence of a ferric acetylacetonate catalyst.ALSO:The invention comprises nitraza diisocyanates of the formula:-<FORM:0933449/IV(a)/1> wherein A and A1 are alkylene radicals and Z is a nitroalkylene radical. The compounds are prepared by reacting a nitraza diacyl halide of the formula:- <FORM:0933449/IV(a)/2> (wherein X represents fluorine, chlorine, bromine or iodine) with an alkali or alkaline earth metal azide to form a nitraza diacyl azide of the formula:- <FORM:0933449/IV(a)/3> which is then heated under anhydrous conditions to effect rearrangement to the isocyanate. Nitraza diacyl halides of the above formula are prepared by treating the corresponding nitraza dicarboxylic acids with a thionyl halide. Nitraza dicarboxylic acids of the formula: <FORM:0933449/IV(a)/4> are prepared by hydrolysis of the corresponding nitraza dinitriles.
GB3953360A 1960-11-17 1960-11-17 Nitraza diisocyanates Expired GB933449A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3953360A GB933449A (en) 1960-11-17 1960-11-17 Nitraza diisocyanates

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3953360A GB933449A (en) 1960-11-17 1960-11-17 Nitraza diisocyanates

Publications (1)

Publication Number Publication Date
GB933449A true GB933449A (en) 1963-08-08

Family

ID=10410078

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3953360A Expired GB933449A (en) 1960-11-17 1960-11-17 Nitraza diisocyanates

Country Status (1)

Country Link
GB (1) GB933449A (en)

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