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 complete impregnation of inflammable articles, comprising from 30% 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.
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Citations
21 Claims
- 1. Flame protection compositions for the complete impregnation of inflammable articles, comprising from 30% 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.
- 8. 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 completely 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 impregnation-agent state before its application.
- 20. 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 completely impregnated with a flame protection composition comprising from 30% 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 cells walls of 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 impregnation-agent state before its application.
Specification