Particulate material reducing the ignitability of combustible substances

US4514328A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Horst Staendeke · Lohmar, DE
• Franz-Josef Dany · Lechenich, DE
• Joachim Kandler · Lechenich, DE

Key dates

• Filing date: Apr 15, 1983
• Grant date: Apr 30, 1985
• Expiry date: Apr 15, 2003

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S521/906
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The disclosure relates to a particulate agent based on free-flowing, pulverulent ammonium polyphosphate of the general formula EQU H.sub.(n-M)+2 (NH.sub.4).sub.m P.sub.n O.sub.3n+1 in which n stands for a whole number with an average value of about 20 to 800 and the ratio of m/n is about 1. The agent reduces the ignitability of combustible substances and constists of PA0 (a) about 80 to 99.5 mass % ammonium polyphosphate and PA0 (b) about 0.5 to 20 mass % hardened epoxide resin having an epoxide equivalent weight of about 170 to about 220, the epoxide resin enveloping the individual ammonium polyphosphate particles.