Flame-retardant combination

US6255371A · kind A · utility

Assignee

• Clariant Corporation · DE

Inventors

• Elke Schlosser · Augsburg, DE
• Bernd Nass · Augsburg, DE
• Wolfgang Wanzke · Meitingen, DE

Key dates

• Filing date: Jul 17, 2000
• Grant date: Jul 3, 2001
• Expiry date: Jul 17, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K21/14
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to a novel flame retardant combination comprising, as component A, a phosphinate of the formula (I) and/or a diphosphinate of the formula (II) and/or polymers of these ##STR1## where PA1 R.sup.1 and R.sup.2 are identical or different and are C.sub.1 -C.sub.6 -alkyl, linear or branched, and/or aryl; R.sup.3 is C.sub.1 -C.sub.10 -alkylene, linear or branched, C.sub.6 -C.sub.10 -arylene, -alkylarylene or -arylalkylene; M is calcium ions, magnesium ions, aluminum ions and/or zinc ions, preferably aluminium or zinc; m is 2 or 3; n is 1 or 3; x is 1 or 2; and comprising, as component B, condensation products of melamine and/or reaction products of melamine with phosphoric acid and/or reaction products of condensation products of melamine with phosphoric acid and/or comprising a mixture of these. The invention also relates to the use of the abovementioned flame retardant combination, especially in thermoplastic polymers.