Particulate, expandable self-extinguishing styrene polymers showing good processability

US3975327A · kind A · utility

Assignee

• BASF SE

Inventors

• Eckhard Nintz · Ludwigshafen, DE
• Rupert Schick · Schifferstadt, DE
• Heinrich Horacek · Puchenau, AT
• Erhard Stahnecker · Heidelberg, DE

Key dates

• Filing date: Mar 18, 1974
• Grant date: Aug 17, 1976
• Expiry date: Mar 18, 1994

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S521/907
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

Particulate, expandable styrene polymers containing a flame-proofing organic halo compound as expanding agent and also a mixture of from 2.5 to 30% by weight of a hydrocarbon of from 3 to 6 carbon atoms and from 97.5 to 70% by weight of monofluorotrichloromethane, based on the total weight of said mixture serving as expanding agent, show good processability and exhibit self-extinguishing properties even during processing.