Particulate agent for impeding the combustibility of combustible substances

US4347334A · 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: Feb 4, 1981
• Grant date: Aug 31, 1982
• Expiry date: Feb 4, 2001

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2375/04
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a particulate agent based on a free-flowing pulverulent ammonium polyphosphate for impeding the combustibility of combustible substances, the agent containing PA0 (a) about 75 to 99.9 weight % of ammonium polyphosphate and PA0 (b) about 0.1 to 25 weight % of a hardened, water-insoluble phenol resin (phenol/formaldehyde-resin) enveloping the individual ammonium polyphosphate particles.