Abstract: The present invention relates to a liquid or gel propellant comprising an oxidizer and a fuel, said fuel preferably having a vapor pressure not exceeding 10 millimeters of mercury at 25.degree. C. and being selected from the group consisting of hydroxy-(lower alkyl)-hydrazine, dihydroxy-(lower alkyl)hydrazine, cyanoethylhydrazine, 1-methyl-1-cyanoethylhydrazine, 1,1-dimethyl-2-cyanoethylhydrazine, and combinations thereof. Also claimed is a method of making the propellant.

Abstract: The compound 5-aminotetrazole is prepared by a process which comprises (a) reacting a hydrazine salt of a mineral acid with cyanamide to form the corresponding aminoguanidine salt, (b) diazotizing the aminoguanidine salt to the corresponding guanylazide salt, and (c) cyclizing the guanylazide salt to 5-aminotetrazole.

Abstract: A process for treating an alkali metal hydrosulfite solution which comprises contacting the alkali metal hydrosulfite solution with aluminum in a reaction mixture, and admixing carbon dioxide gas with the reaction mixture to remove dissolved aluminum as an aluminum-containing precipitate, the alkali metal hydrosulfite solution having a residual alkalinity of from about 0.1 to about 20 grams per liter of hydroxide ion.

Abstract: A process for treating an alkali metal hydrosulfite solution which comprises contacting the alkali metal hydrosulfite solution, having a residual alkalinity of from about 1 to about 20 grams per liter of hydroxide ion, with aluminum. The process of the invention can be operated at low temperatures i.e., those which are normally used for storage of the sodium hydrosulfite solution to minimize thermal decomposition.

Abstract: An arsine storage and delivery system, and, more specifically, an improved system for storing arsine on zeolite while providing delivery of the arsine as needed.

Abstract: Disclosed are selected 4-hydroxyphenyl anilino alkoxysilanes of the formula: ##STR1## wherein R is hydrogen or a lower alkyl group having from 1 to 4 carbon atoms and each R' is individually selected from an alkyl group having 3 to 12 carbon atoms with the proviso that at least a majority of said R' radicals are sterically hindered alkyl groups. The compounds are disclosed to be effective antioxidants, especially in functional fluids having shielded polysilicate compounds, silicate esters, or silicone oils as base fluids.

Abstract: Described is a process for exchanging some or all of the radicals R' in alkoxysilane cluster compounds with different radicals R"; this process being based on the following reaction: ##STR1## wherein R is hydrogen, an alkyl, an alkenyl, and an aryl, or an aralkyl; and each R' is independently selected from the same groups as R with the proviso that at least a majority of said R' radicals are sterically hindered alkyl groups having at least 3 carbon atoms; and each R" is selected from groups consisting of alkyl groups, alkenyl groups, aryl groups, aralkyl groups, functionally substituted alkyl, alkenyl, aryl and aralkyl groups, and polyoxyalkylene groups with the proviso that R" radicals are different than R' radicals; and n is a number from 1 to 9.

Abstract: Described is a process for producing alkoxysilane cluster compounds by reacting a trialkoxysilanol with an amidated alkoxysilane cluster compound; this reaction being based on the following equation: ##STR1## wherein R is hydrogen, an alkyl, an alkenyl, an aryl, or an aralkyl; each R' is independently selected from the same groups as R with the proviso that at least a majority of said R' radicals are sterically hindered alkyl groups having at least 3 carbon atoms; and R" and R"' are individually selected from hydrogen, lower alkyl groups having 1-4 carbon atoms, and phenyl.

Abstract: Described is a process for producing alkoxysilane cluster compounds by reacting a trialkoxysilanol with a triamidosilane; this reaction being based on the following equation: ##STR1## wherein R is hydrogen, an alkyl, an alkenyl, an aryl, or an aralkyl; each R' is independently selected from the same groups as R with the proviso that at least a majority of said R' radicals are sterically hindered alkyl groups having at least 3 carbon atoms; and R" and R'" are individually selected from hydrogen, lower alkyl groups having 1-4 carbon atoms, and phenyl with the proviso that both R" and R'" may not be hydrogen.

Abstract: Novel grease compositions are described which comprise:(a) A major amount of a shielded polysilicate compound selected from the group consisting of alkoxysilane cluster compounds, alkoxysilanol cluster compounds, alkoxysilane ester compounds, alkoxysilane multiple cluster compounds, silicone-bridged alkoxysilane double cluster compounds, distillation residues containing these compounds and mixtures thereof; and(b) an amount of at least one grease thickener sufficient to thicken said shielded polysilicate compound to a grease consistency.

Abstract: An improved method is disclosed for the preparation of trialkoxysilanols. The process involves hydrolysis of corresponding trialkoxyhalosilanes, conducted using a two-phase system in the presence of catalytic amounts of select phase transfer agents.

Abstract: An improved method is disclosed for the preparation of trialkoxysilanols. The process involves hydrolysis of corresponding trialkoxyhalosilanes with solid bicarbonate in the presence of a critical catalytic amount of water.

Abstract: Novel alkoxysilane ester cluster compounds are disclosed. These compounds have the formula:RSi[OSi(OR').sub.3 ].sub.2 OR"wherein R is hydrogen, an alkyl, alkenyl, aryl or aralkyl group, and each R' and the R" groups is independently selected from alkyl, alkenyl, aryl and aralkyl with the proviso that at least a majority of the R' radicals are sterically hindered alkyl groups having at least 3 carbon atoms. The preparation of these novel alkoxysilane ester cluster compounds and their use as functional fluids are also disclosed.

Abstract: Methods are described wherein a functional fluid is used as a medium for the transmission of pressure or heat. The functional fluid used is a composition containing an effective amount of an alkoxysilane multiple cluster compound.

Abstract: Novel alkoxysilane cluster compounds are described having the formula: ##STR1## wherein n is an integer from 0 to 300; R is hydrogen, alkyl, alkenyl, aryl, aralkyl or --OSi(OR').sub.3 ; each R' is independently selected from alkyl, alkenyl, aryl or aralkyl with the proviso that at least a majority of R' radicals are sterically hindered alkyl groups having at least 3 carbon atoms; and R" and R'" are independently selected from hydrogen, alkyl, alkenyl, aryl, aralkyl, hydroalkyl, and halo or cyano substituted alkyl, alkenyl, aryl, aralkyl, and hydroalkyl. The preparation and use of these alkoxysilane cluster compounds also are described.

Abstract: Novel alkoxysilane ester cluster compounds are disclosed. These compounds have the formula:RSi[OSi(OR').sub.3 ].sub.2 OR"wherein R is hydrogen, an alkyl, alkenyl, aryl or aralkyl group, and each R' and the R" groups is independently selected from alkyl, alkenyl, aryl and aralkyl with the proviso that at least a majority of the R' radicals are sterically hindered alkyl groups having at least 3 carbon atoms. The preparation of these novel alkoxysilane ester cluster compounds and their use as functional fluids are also disclosed.

Abstract: An improved method is disclosed for preparing alkoxysilane cluster compounds having the formula:RSi[OSi(OR').sub.3 ].sub.3wherein R is hydrogen, an alkyl, alkenyl, aryl or aralkyl group and each R' is independently selected from alkyl, alkenyl, aryl and aralkyl with the proviso that at least a majority of the R' radicals are sterically hindered alkyl groups having at least 3 carbon atoms. The improved preparation method involves reacting a substituted trihalosilane with a trialkoxysilanol in the presence of a critical amount of an acceptor base in a solvent reaction medium while maintaining the reactor temperature within a select range.

Abstract: Novel alkoxysilane cluster compounds are described having the formula: ##STR1## wherein n is an integer from 0 to 300; R is hydrogen, alkyl, alkenyl, aryl, aralkyl or --OSi(OR').sub.3 ; each R' is independently selected from alkyl, alkenyl, aryl or aralkyl with the proviso that at least a majority of R' radicals are sterically hindered alkyl groups having at least 3 carbon atoms; and R" and R'" are independently selected from hydrogen, alkyl, alkenyl, aryl, aralkyl, hydroalkyl, and halo or cyano substituted alkyl, alkenyl, aryl, aralkyl, and hydroalkyl. The preparation and use of these alkoxysilane cluster compounds also are described.

Abstract: Functional fluid systems, i.e., hydraulic fluid and heat transfer fluid systems, containing alkoxysilanol cluster compounds having the formula RSi[OSi(OR').sub.3 ].sub.2 OH wherein R is hydrogen, an alkyl, alkenyl, aryl or aralkyl group and each R' is independently selected from the same group as R with the proviso that at least a majority of R' radicals are sterically hindered alkyl groups having at least 3 carbon atoms, are described.

Abstract: Functional fluid systems, i.e. hydraulic fluid and heat transfer fluid systems, containing alkoxysilane cluster compounds having the formula RSi[OSi(OR').sub.3 ].sub.3 wherein R is hydrogen, an alkyl, alkenyl, aryl or aralkyl group and each R' is independently selected from the same group as R with the proviso that at least a majority of R' radicals are sterically hindered alkyl groups having at least 3 carbon atoms, are described.