Inorganic-organic compositions
AssigneeBayer Aktiengesellschaft
InventorPeter Markusch
Life of this patent
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Abstract
Inorganic-organic compositions obtained from a mixture of components comprising: (a) from 5 - 98% by weight of an organic polyisocyanate (b) from 2 - 95% by weight of an aqueous silica sol containing about 20 - 60% by weight of said silica and, (c) from 0 - 93% by weight of a water-binding component Based on the total weight of (a), (b) and (c). The products of the invention may be used in many forms including both porous and non-porous products as surface coatings having good adhesion and resistance to abrasion, as a mortar, and as a foam concrete for making molded products particularly in construction engineering and civil engineering as for building walls, igloos, road building and the like.
Claims28
A porous inorganic-organic composition obtained by reacting a mixture comprising:
- (A) from 5-98% by weight of an organic polyisocyanate selected from the group consisting of
- (i) organic polyisocyanates which contain ionic groups or groups capable of forming ionic groups in the presence of alkali, and
- (ii) non-ionic-hydrophilic polyisocyanates prepared by reacting an excess of an organic polyisocyanate with an organic hydrophilic compound containing at least one group which is reactive with isocyanate groups,
- (B) from 2-95% by weight of an aqueous silica sol containing about 20-60% by weight of said silica, and
- (C) from 0-93% by weight of an inorganic water-binding component, said water-binding component being capable of absorbing water to form a solid or gel, all of said percents by weight of components (A), (B) and (C) being based on the total weight of components (A), (B) and (C), said composition being a solid/solid xerosol.
A process for preparing a porous inorganic-organic composition comprising reacting a mixture comprising:
- (A) from 5-98% by weight of an organic polyisocyanate selected from the group consisting of
- (i) organic polyisocyanates which contain ionic groups or groups capable of forming ionic groups in the presence of alkali, and
- (ii) non-ionic-hydrophilic polyisocyanates prepared by reacting an excess of an organic polyisocyanate with an organic hydrophilic compound containing at least one group which is reactive with isocyanate groups,
- (B) from 2-95% by weight of an aqeuous silica sol containing about 20-60% by weight of said silica, and
- (C) from 0-93% by weight of an inorganic water-binding component, said water-binding component being capable of absorbing water to form a solid or gel, all of said percents by weight of components (A), (B) and (C) being based on the total weight of components (A), (B) and (C), said composition being a solid/solid xerosol.
Dependencies are inferred from the claim text.