Compositions for lining casting moulds and related articles and method of making such articles (US Patent 3,878,142, 1975)

Julianna Tisza received US Patent No. 3,878,142 on April 15, 1975, filed December 4, 1972. It was assigned to Tidd Chemisch Tech Produkte G.

The patent's abstract:

A lining for metallurgical purposes comprises 80 - 90 wt.% of aluminum waste metal, 1 - 19 wt.% of fibrous filler, 1 - 10 wt.% of binding agents, such as phenoplasts or aminoplasts and up to 1 wt.% of wetting agent. The lining may be adapted for specialised purposes by replacing up to a quarter of the aluminum waste metal by additional constituents suited to the required purpose. The lining may be made by a dry process in which dry flakes of the composition are pressed to a desired shape or by a wet process in which the aluminum waste metal is added to an aqueous mixture of the fibrous filler and wetting agent whereafter the other constituents are added. Refractory, insulating and exothermic linings are described.

Where it was listed

• Asbestos, September 1975, in its patents department (the year's issues)