| abstract |
1500175 Release agents BALL CORP 28 May 1975 23254/75 Heading CSF [Also in Divisions B1-B2] A release and lubricating composition comprises an aqueous dispersion of a mixture of tungsten disulphide having a lamellar-hexagonal crystalline structure, the tungsten disulphide preferably having an average particle size below 2 microns, a silicate and a setting agent. The setting agent may be zinc oxide, calcium chloride, magnesium sulphate, aluminium sulphate, sodium borate, sodium metaborate, sodium fluorosilicate, kaolinitic clays and minerals and mixtures thereof. Suitable silicates include sodium and potassium silicate although organic silicates such as guanidine silicate, tetramethyl ammonium silicate and tetraethanolammonium silicate may be used. The compositions may also include graphite. Such compositions may be applied as dispersions to surfaces, e.g. in making glassware. |