Flame protection composition comprising aluminum trihydrate organic binder, and a sulfur compound and a polyurethane foam provided with such flame-protection composition

US4455396A · kind A · utility

Inventors

• Manhal Al-Tabaqchall · Bocholt, DE
• Ludwig Wesch · Heidelberg, DE
• Edgar Weiss · Alzenau, DE

Key dates

• Filing date: Dec 14, 1981
• Grant date: Jun 19, 1984
• Expiry date: Dec 14, 2001

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31551
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

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.