Polyphosphinites and a process for their preparation

US4096208A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Walter Dursch · Königstein, DE
• Fritz Linke · Königstein, DE
• Manfred Finke

Key dates

• Filing date: Dec 13, 1976
• Grant date: Jun 20, 1978
• Expiry date: Dec 13, 1996

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07F9/301
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Compounds of the formula ##STR1## WHEREIN Z is alkyl with 2 to 6 carbon atoms, x is oxygen, NH or sulfur, n and m are integers from 2 to 6, r is zero or 1, R.sup.4, R.sup.5 R.sup.6 and R.sup.7 are hydrogen or methyl and R.sup.3 is methyl, ethyl or phenyl. They are obtained by reacting 1 mole of a compound of formula EQU Z--(X--H).sub.n with n.m moles of an alkyleneoxide or alkylenecarbonate of the formulas ##STR2## and n(m+r) moles of a phospholane of formula ##STR3## These compounds are used as flameproofing agents especially for pile carpets.