DE977878C - Process for the production of pourable rocket propellants on the basis of polyurethanes containing inorganic oxygen salts - Google Patents

Process for the production of pourable rocket propellants on the basis of polyurethanes containing inorganic oxygen salts

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Publication number
DE977878C
DE977878C DEJ17599A DEJ0017599A DE977878C DE 977878 C DE977878 C DE 977878C DE J17599 A DEJ17599 A DE J17599A DE J0017599 A DEJ0017599 A DE J0017599A DE 977878 C DE977878 C DE 977878C
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DE
Germany
Prior art keywords
pourable
production
basis
containing inorganic
inorganic oxygen
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
DEJ17599A
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German (de)
Inventor
Hiltmar Dipl-Chem Dr Schubert
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.)
Bundesrepublik Deutschland
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Bundesrepublik Deutschland
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Filing date
Publication date
Application filed by Bundesrepublik Deutschland filed Critical Bundesrepublik Deutschland
Priority to DEJ17599A priority Critical patent/DE977878C/en
Application granted granted Critical
Publication of DE977878C publication Critical patent/DE977878C/en
Expired legal-status Critical Current

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Description

Verfahren zur Herstellung gießfähiger Raketentreibstoffe .auf der Basis von anorganische Sauerstoffsalze enthaltenden Polyurethanen Es ist bekannt, daß man Composite-Treibsätze, das sind Sauerstoffsalze enthaltende Binder, dadurch herstellen kann, daß man Isocyanate, hydroxylhaltige Verbindungen und Sauerstoffsalze vermischt und bei erhöhter Temperatur aushärten läßt. Die Menge der einzuarbeitenden Sauerstoffsalze ist abhängig von der Sauerstoffbilanz des Binders.Process for the production of pourable rocket propellants on the Basis of polyurethanes containing inorganic oxygen salts It is known that composite propellants, i.e. binders containing oxygen salts, are thereby produced can produce that one isocyanates, hydroxyl-containing compounds and oxygen salts mixed and allowed to harden at elevated temperature. The amount of to incorporate Oxygen salts depends on the oxygen balance of the binder.

Gegenstand der vorliegenden Erfindung ist ein Verfahren zur Herstellung gießfähiger Raketcntreil>stoffe auf der Basis von anorganische Sauerstc;flsalze (ntthältenden I'olyttrethanen, wobei letztere durch Reaktion von 1)iisocyanatett mit hydroxylhaltigen, organischen Verbindungen erzeugt werden, das dadurch gekennzeichnet ist, da13 als hydroxylhaltige, organische Verbindung mono- oder polymere Nitroverbindungen bzw. Nitrate mit freien Hydroxylgruppen in Gegenwart von vernetzend wirkenden Katalysatoren verwendet werden. Man verfährt dabei so, da13 matt als vernetzende Komponente. organische Nitroverbindungen bzw. Nitrate mit freien Hydroxylgruppen verwendet. Diese Verbindungen können sowohl ntakromolekulare n als auch monome reit Charakter be-<,itzen, wie z. l;. partiell mit Salpetersäure veresterter 1'olyvittylalkoltol, Zellulose, Stärke, 1'oly-; imlalkolutl, Kondensationsprcxiukte von Nitmver-I>indungen mit Aldehyden u. dgl. Als Mottoniere kommen in Betracht Glyzerinmononitrat, Erythritdinitrat; Sorbittetranitrat, 2,2-Dinitropropandiol-i,3 und ähnliche Verbindungen.The present invention relates to a method of production Pourable rocket components on the basis of inorganic oxygen salts (ntholenden I'olyttrethanen, the latter by reaction of 1) iisocyanatett be generated with hydroxyl-containing organic compounds, which is characterized is that the hydroxyl-containing organic compound is mono- or polymeric nitro compounds or nitrates with free hydroxyl groups in the presence of crosslinking catalysts be used. One proceeds in such a way that matt is used as a cross-linking component. organic Nitro compounds or nitrates with free hydroxyl groups are used. These connections can both intakromolecular n and monome re characters be - <, itzen, like z. l ;. 1'olyvittylalkoltol partially esterified with nitric acid, cellulose, starch, 1'oly-; Imlalkolutl, condensation principles of compounds with aldehydes and the like as themed animals Glycerol mononitrate, erythritol dinitrate are suitable; Sorbitol granitrate, 2,2-dinitropropanediol-i, 3 and similar compounds.

_ Beispiele ' 1. Eine Mischung von 14 Teilen Polyvinylnitrat (Veresterungsgrad 85 ' bis 9o%), 5 Teilen Diisocyanat (z. B. Toluylendiisoeyanat; Heramethylendiisocyanat, usw.),. 39 Teilen Nitroglycerin, 4o Teilen Ammoniumperchlorat und 2 Teilen Stabilisator wird mit einem Katalysator (z. B. Eisenacetylacetonat) bei 30 bis 70° C verknetet und in Raketenbrennkammern oder in andere Formen gegossen und bei 4o bis 70° C auspolymerisiert, wobei sich das Polyvinyloitrat mit' den noch freien OH-Gruppen über das D'iisocyanitt- vernetzt.Examples 1. A mixture of 14 parts of polyvinyl nitrate (degree of esterification 85 to 90%), 5 parts of diisocyanate (e.g. toluene diisocyanate; heramethylene diisocyanate, etc.). 39 parts of nitroglycerin, 40 parts of ammonium perchlorate and 2 parts of stabilizer are kneaded with a catalyst (e.g. iron acetylacetonate) at 30 to 70 ° C and poured into rocket combustion chambers or other forms and polymerized at 40 to 70 ° C, the polyvinyl nitrate with 'the still free OH groups via the D'iisocyanitt- crosslinked.

2. 15 Teile Nitrocellulose (11,2°/o N) werden mit io Teilen OH haltigem Polyglycoläther, 2o Teilen Nitroglycerin vermischt und nach Zusatz von 4o bis 7o Teilen Ammoniumperchlorat und Aluminium, 3 Teilen Stabilisator, Benetzer, 3 Teilen eines Is8-cyanats und Spuren von Eisenacetonylacetonät bei 30 bis 70° C verknetet, vergossen und auspolymerisiert..Bei der Polymerisation erfolgt sowohl Vernetzung,über die freie OH-Gruppe der Nitrocellulose als auch über .diejenige des Polyglycoläthers mit dem Isocyanat: 3. 1o,7 Teile von 2,2-Dinitropropandiol werden mit 4,3 Teilen Toluylendiisocyanat, 74 Teilen Am-, moniumperehlorat und i Teil Katalysator und sonstigen Hilfsstoffen verknetet. Die Mischung wird wie bei Beispiel i und 2 weiterverarbeitet.2. 15 parts of nitrocellulose (11.2% N) are mixed with 10 parts of OH Polyglycol ether, 2o parts of nitroglycerin mixed and after adding 4o to 7o Parts of ammonium perchlorate and aluminum, 3 parts of stabilizer, wetting agent, 3 parts an Is8 cyanate and traces of iron acetonylacetonate kneaded at 30 to 70 ° C, encapsulated and polymerized. During the polymerization, both crosslinking and over the free OH group of the nitrocellulose as well as that of the polyglycol ether with the isocyanate: 3. 10.7 parts of 2,2-dinitropropanediol are mixed with 4.3 parts Toluylene diisocyanate, 74 parts of ammonium perehlorate and 1 part of catalyst and other auxiliary materials kneaded. The mixture is processed further as in Examples i and 2.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung gießfähiger Raketentreibstoffe auf dt-r Basis von anorganische Sauerstoffsalze enthaltenden Polyurethanen, wobei letzteredurch Reaktion von Diisocyanated mit hydroxylhaltigen, organischen Verbindungen erzeugt werden, dadurch gekennzeichnet, daß alg hydroxylhaltige, organische Verbindung mono- oder polymere Nitroverbindungen bzw. Nitrate mit freien Hydroxylgruppen in Gegenwart von vernetzend wirkenden Katalysatoren verwendet werden. In Betracht gezogene Druckschriften: USA;-Patentschrift Nr.275&o72. PATENT CLAIM: Process for the production of pourable rocket propellants based on polyurethanes containing inorganic oxygen salts, the latter being produced by reaction of diisocyanates with organic compounds containing hydroxyl, characterized in that organic compounds containing hydroxyl algae are mono- or polymeric nitro compounds or nitrates with free Hydroxyl groups are used in the presence of crosslinking catalysts. Documents considered: USA; Patent Nos. 275 & o72.
DEJ17599A 1960-01-28 1960-01-28 Process for the production of pourable rocket propellants on the basis of polyurethanes containing inorganic oxygen salts Expired DE977878C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEJ17599A DE977878C (en) 1960-01-28 1960-01-28 Process for the production of pourable rocket propellants on the basis of polyurethanes containing inorganic oxygen salts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEJ17599A DE977878C (en) 1960-01-28 1960-01-28 Process for the production of pourable rocket propellants on the basis of polyurethanes containing inorganic oxygen salts

Publications (1)

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DE977878C true DE977878C (en) 1971-12-30

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DEJ17599A Expired DE977878C (en) 1960-01-28 1960-01-28 Process for the production of pourable rocket propellants on the basis of polyurethanes containing inorganic oxygen salts

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2768072A (en) * 1955-08-15 1956-10-23 Howard J Stark Method of producing a low density explosive

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2768072A (en) * 1955-08-15 1956-10-23 Howard J Stark Method of producing a low density explosive

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