Aqueous suspension of bentonite and its use for coating thermal

Details Aqueous suspension of bentonite and its use for coating thermal Aqueous suspension of bentonite and its use for coating thermal

1983-10-28

1986-12-02

Bell, James J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

106 3827, 162152, 1621818, 428280, 428282, 428284, 428325, 428454, 428920, B32B 700

Patent

active

046264663

ABSTRACT:
There is prepared an aqueous suspension which in addition to water, consists of 2 to 50 weight % of a mixture of bentonite and inorganic fibers, with the portion of inorganic fiber being 1 to 30 weight % and the portion of bentonite being 1 to 30 weight % and wherein the total amount of solids does not exceed 50 weight %. With the suspension there is attained an improvement of the mechanical properties of thermal insulating molded objects which are employed for thermal insulation and which for example, contain pyrogenically produced silica as a filler by delivery of this suspension on the thermal insulating plate. The suspension can also be delivered on thermal insulating molded bodies on which there is pressed a fiber net or a fiber felt. After applying the suspension several thermal insulating molded bodies can be joined together where the coating formed consisting of bentonite and inorganic fibers acts as binder. The heat insulating molded article in addition to this layer, can have one or more additional coatings based on organic or inorganic lacquer systems, silicone compositions or low melting glazes.

REFERENCES:
patent: 2732295 (1956-01-01), Hollenberg et al.
patent: 4001029 (1977-01-01), Cassins
patent: 4153503 (1974-05-01), Booth et al.

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