Patent GB-1120341-A (GB)
Title: Improvements in or relating to corrosion preventing compositions
Inventor: CAMPBELL ROBERT EDWARD
IPC: C08K9/02
Filed: 1964-12-01
Abstract: Corrosion-preventing coating compositions comprise a dispersive medium and a particulate material coated with lead, a lead alloy, tin or a tin alloy.  The particulate material may be another metal such as aluminium, an aluminium alloy, magnesium, a magnesium alloy, or zinc, an organic elastomer such as polyvinyl chloride, polyethylene, polypropylene, or nylon, or an inorganic material such as mica, asbestos, vermiculite or micaceous iron ore.  The ratio of coating agent to particulate material may be 2-15% by weight.  Coating may be effected by milling.  A suitable dispersing medium is an oil modified heat hardening phenolic resin.  In the examples, the dispersing medium is an unspecified resin base.  Composition 3 discloses lead coated polythene, polypropylene and polyvinyl chloride powders.  The coated particles per se are claimed when coated by mechanical means.ALSO:A corrosion-preventing coating composition and lubricant for wire, paricularly steel wire, comprises a dispersive medium containing a particulate material coated with lead, a lead alloy, tin or a tin alloy.  The particulate material may be another metal such as aluminium, an aluminium alloy, magnesium, a magnesium alloy, or zinc, an organic elastomer such as polyvinyl chloride, polyethylene, polypropylene or nylon, or an inorganic material such as mica, asbestos, vermiculite or micaceous iron ore in a ratio of coating agent to particulate material of 2-15% by weight.  Coating may be effected by milling.  Suitable dispersive media include lanolin, or a synthetic resin plus (a) benzoyl peroxide or (b) a drying or semi-drying oil such as linseed oil, either of which promote polymerization of the resin.  In examples the compositions contain also white spirit and micro-crystalline wax, and the resin is unspecified. The coated particles per se are claimed when coated by mechanical means.ALSO:Corrosion-resistant particles comprise inorganic or organic material mechanically coated overall with lead, a lead alloy, tin or a tin alloy. The particulate substrate may be aluminium, an alloy thereof, magnesium, an alloy thereof, zinc, polyvinyl chloride, polyeltrylene, polypropyltne, nylon, mica, asbestos, vermiculite, or micaceous iron ore, and the coating may amount to 2-15% by weight thereof.  Coating is effected by milling.ALSO:Metal wire, particularly steel wire, is given a corrosion-resistant coating of a lacquer comprising a dispersive medium and a particulate material coated with lead, a lead alloy, tin, or a tin alloy.  The particulate material may be another metal viz. aluminium, an aluminium alloy, magnesium, a magnesium alloy, or zinc, an organic elastomer such as polyvinyl chloride, polyethylene, polypropylene, or nylon, or an inorganic material such as mica, asbestos, vermiculite, or micaceous iron ore. Dispersive media specified are lanolin, or a synthetic resin e.g. an oil-modified heat-hardening phenolic resin plus (a) benzoyl peroxide or (b) a drying or semi-drying oil such as linseed oil, either of which promote resin polymerisation.  The composition may be brushed or sprayed on to the metal substrate.