Flame protection composition comprising aluminum trihydrate organic binder, and a sulfur compound and a polyurethane foam provided with such flame-protection composition
First Claim
1. Flame protection compositions for the treatment of inflammable articles, comprising up to about 50% by weight of the total composition of aluminum trihydrate bound in an organic binder and a sulfur compound having at least one sulfo group and/or sulfonium ions in a proportion of between 7.5 and 30% by weight based upon the weight of the total composition.
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Abstract
In order to improve the flame protection effect without substantially impairing the mechanical properties of the articles covered with the flame protection agent, the flame protection agent is provided with a compound in a proportion by weight of 7.5 to 30% which contains at least one sulfo group or sulfonium ion. This compound is preferably a water soluble ammonium salt. As binder there is used an aqueous solution or aqueous dispersion of an organic material, particularly of an acrylate or of a polymer or copolymer having a base of acrylic acid ester. It is particularly advantageous if substantially open-cell polyurethane foam having a base of polyether is impregnated with such a flame protection agent which contains an ammonium salt of an aminosulfonic acid in a proportion of about 12%. Polyurethane foams impregnated in this manner are particularly well suited for use in cushionings of articles or in premises for which class B1 fire protection is required.
83 Citations
20 Claims
- 1. Flame protection compositions for the treatment of inflammable articles, comprising up to about 50% by weight of the total composition of aluminum trihydrate bound in an organic binder and a sulfur compound having at least one sulfo group and/or sulfonium ions in a proportion of between 7.5 and 30% by weight based upon the weight of the total composition.
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8. 5-15% ammonium salt of amino-sulfonic acid
Up to 11% antimony trioxide Up to 5% titanium dioxide Up to 0.5% defoaming agent Up to 0.5% pigments and has the following properties:
space="preserve" listing-type="tabular">______________________________________ pH;
7-8 Solids content;
56-64% Viscosity;
550-750 Density;
1.4-1.5 ______________________________________- View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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9. A difficultly inflammable polyurethane foam derived from polyether and having a substantially open-cell porous structure and a unit weight of between about 10 and 50 kg per m3 wherein said foam is impregnated with a flame protection composition comprising up to about 50% by weight of the total composition of aluminum trihydrate bound in an organic binder and a sulfur compound wherein said flame protection composition also constitutes a cover for the cell walls of said open cells of said porous foam structure and said cover contains a sulfo compound in a proportion of between 7.5% and 30% of said cover in the flowable impregnationagent state before its application.
Specification