Patent GB-791207-A (GB)
Title: Siliceous amino compounds
IPC: C10M169/00
Filed: 1956-08-24
Abstract: The invention comprises the reaction products of (a) a water-soluble or water-dispersable salt of a partial amide derived from an alkylene di- or poly-amine (which may be substituted in the alkylene residue) and an aliphatic monocarboxylic acid of 6-22 carbon atoms in the chain, naphthenic acid or tall oil acids, and (b) at least a stoichiometrically equivalent amount of a water-soluble sodium, potassium or ammonium silicate.  In a modification the silicate is used in excess and sufficient acid added to convert all the excess to silica, on which the amine silicate becomes adsorbed; suitable acids for this purpose are hydrochloric, sulphuric, phosphoric and aliphatic monocarboxylic acids of up to 6 carbon atoms in the chain. In the examples, the following partial amide salts are used as starting materials: acetate of mono-(hydrogenated tallow acyl)-tetraethylene pentamine, acetate of monobehenyl - diethylenetriamine, acetate of mono-or di(hydrogenated tallow acyl)-diethylenetriamine, acetate of tri-(hydrogenated tallow acyl) - triethylene - tetramine, acetate of mono - (12 - hydroxy - stearoyl) - diethylenetriamine, acetate of monocaproyl-diethylenetriamine acetate of monolauroyl-diethylenetriamine, acetate of mono-(cottonseed acyl)-diethylenetriamine, phosphate of mono-(dichlorostearoyl) - diethylene triamine, acetate of mono-oleoyl-3-dimethylamino-propylamine and acetate of mono-naphthenyl-diethylene triamine.  Other specified acids (which may be used as such for acylation or in the form of their chlorides or glycerides) are caprylic, capric, myristic, palmitic, stearic, linoleic, linolenic and the acids from tallow, soybean oil, coconut oil, cottonseed oil, palm-kernel oil and castor oil, hydrogenated or not.  The amine may have N-alkyl substituents. The acid used for forming the salt of the partial amide may also be sulphuric, hydrochloric or propionic.  The inorganic silicate may have various ratios of base to silica.  The presence of a water-immiscible solvent in the reaction medium facilitates the separation of the products.ALSO:Compounds useful as bodying agents for lubricating greases or as flatting agents comprise the reaction products of (a) a watersoluble salt of a partial amide derived from an alkylene di- or poly-amine (which may be substituted in the alkylene residue) and an aliphatic monocarboxylic acid of 6-22 carbon atoms in the chain, naphthenic acid or tall oil acids, and (b) at least a stoichiometrically equivalent amount of a water-soluble silicate.  In a modification the silicate is used in excess and sufficient acid added to convert all the excess to silica, on which the amine silicate becomes adsorbed.  The compounds are added, to the extent of 15-40 per cent by weight, to lubricating oils which may be paraffinic, naphthenic or asphaltic base. Besides having desirable physical properties the resulting greases inhibit the corrosion of ferrous metals.  Examples show the addition to a naphthenic base oil (300 Saybolt Universal seconds viscosity at 100 DEG  F.) of the silicate salts of the following partial amides:-mono-(hydrogenated tallow acyl) - tetraethylenepentamine, monobehenyl-diethylenetriamine, mono- or di-(hydrogenated tallow acyl)-diethylenetriamine, tri-(hydrogenated tallow acyl)-triethylenetetramine, mono - (12 - hydroxy - stearoyl) - diethylenetriamine, monocaproyl - diethylenetriamine, monolauroyl - diethylenetriamine, mono - (cottonseed acyl) - diethylenetriamine, mono - (dichlorostearoyl) - diethylenetriamine, mono - oleoyl - 3 - dimethylamino - propylamine and mono - naphthenyl - diethylenetriamine.  Other suitable components are mentioned for making the partial amides.