Hardener for production solid foams or compact structure from aqueous solutions
AssigneeBayer Aktiengesellschaft
InventorJakob Rademachers
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Abstract
In the production of foams or compact materials by adding an acidic hardener to an aqueous system containing at least one of an organic and an inorganic component capable of being hardened thereby, the improvement which comprises employing boron phosphate as said hardener. Preferred components comprise urea-formaldehyde or thiourea-formaldehyde and/or an alkali metal silicate. A polyhydric alcohol such as glycerine and/or a gelling agent may also be included along with a foaming agent.
Claims8
In the production of foams or compact materials by adding an acidic hardener to an aqueous system containing a resin selected from the group consisting of urea-formaldehyde and thiourea-formaldehyde component capable of being hardened thereby, and allowing said system to set to a hardened mass, the improvement which comprises employing about 3 to 15% by weight of boron phosphate as said hardener.
Dependencies are inferred from the claim text.