Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1982-02-18
1983-09-06
Griffin, Ronald W.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
156325, 156327, 156334, 524262, 524425, 524426, 524556, 524575, C09D 104, C09J 102
Patent
active
044030592
ABSTRACT:
An adhesive composition based upon an aqueous solution of alkali metal silicate with a content of powdered inorganic filler, having good storage stability, which comprises an aqueous alkali metal silicate solution containing:
(a) from 10% to 40% by weight of at least one powdered inorganic filler,
(b) a suspension effective amount of at least one zinc soap of a fatty acid having from 12 to 22 carbon atoms and
(c) from 0 to about 24% by weight of a 50% by weight stable, aqueous dispersion of an alkali-resistant organic polymer, based on the weight of the total composition.
Preferably zinc stearate in amounts of from 1% to 5% by weight are added to the adhesives containing powdered inorganic fillers and optionally organic additives on a base of aqueous water glass solutions, to prevent separation phenomena. Sodium and/or potassium silicate solutions can be used, the sodium silicate solution being preferably present in the ratio by weight of 3.3 to 3.9:1 for SiO.sub.2 /Na.sub.2 O, with a solids content of 38% to 28% by weight and the potassium silicate solution at a ratio by weight of 2 to 2.6:1 for SiO.sub.2 /K.sub.2 O, with a solids content of 40% to 29% by weight. The inorganic filler is preferably powdered crystalline calcium carbonate in the form of metamorphous calcite with particle sizes of up to 25 .mu.m.
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Friedemann Wolfgang
Krapp Gerd
Laut Bernhard
Griffin Ronald W.
Henkel Kommanditgesellschaft auf Aktien
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