Water retardant insulation composition comprising treated low de

Details Water retardant insulation composition comprising treated low de Water retardant insulation composition comprising treated low de

1979-01-16

1980-11-04

Pitlick, Harris A.

Compositions

Electrolytes for electrical devices

106 1433, 106 1439, 106 1444, 252383, C04B 4308, C04B 4300, F16L 5902, F16L 5904

Patent

active

042318840

ABSTRACT:
A water retardant composition comprising a mixture of a low density granular mineral material coated with a water repellant material, and a finally divided limestone or other carbonate or silicate mineral particles also coated with a water repellant material. The low density granular mineral material is preferably selected from the group consisting of expanded perlite, expanded vermiculite, expanded shale and pumice rock. The carbonate or silicate mineral particles are preferably selected from the group consisting of talc, clay, sericite, unexpanded perlite, magnesium silicate and aluminum silicate. Preferably, the low density granular mineral material is coated with a silicone or asphalt, while the limestone or other carbonate or silicate mineral material is preferably coated with a silicone or a salt of stearic acid. The composition exhibits excellent load bearing properties and resistance to water penetration through the matrix and provides improved thermal insulation and corrosion protection when packed around underground structures.

REFERENCES:
patent: 436225 (1890-09-01), Firth
patent: 2003335 (1935-06-01), Black
patent: 2007969 (1935-07-01), Grodsky
patent: 2625512 (1953-01-01), Powell
patent: 2774383 (1956-12-01), Kidd
patent: 2824022 (1958-02-01), Sucetti
patent: 3468687 (1969-09-01), Thomas
patent: 3655564 (1972-04-01), Barrington
patent: 3950259 (1976-04-01), Pallo et al.

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