Compositions: coating or plastic – Coating or plastic compositions – Molds and mold coating compositions
Patent
1980-03-26
1981-04-14
Hayes, Lorenzo B.
Compositions: coating or plastic
Coating or plastic compositions
Molds and mold coating compositions
75 96, 106 3827, 106 65, 106 69, 249197, 249202, B28B 736
Patent
active
042617502
ABSTRACT:
An exothermic anti-piping composition of the type which is formed of a refractory heat-insulating material, an exothermic compound, and an expanding media, and wherein the expanding media is predominantly either vermiculite ore or perlite ore along with less than 1% by weight of acid-treated graphite flakes.
REFERENCES:
patent: 3308514 (1967-03-01), Osborn
patent: 3804642 (1974-04-01), Rumbold et al.
patent: 3811898 (1974-05-01), Rumbold et al.
patent: 3923526 (1975-12-01), Taskashima
patent: 3975200 (1976-08-01), Takashima
Hayes Lorenzo B.
Pittsburgh Metals Purifying Company
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