Polymerizable phosphazene derivatives: a process for preparing them and their uses

US5912321A · kind A · utility

Assignee

• Mercedes-Benz Group AG · DE

Inventors

• Thomas Raith · Westerstetten, DE
• Wolfgang Nuding · Ulm, DE

Key dates

• Filing date: Apr 17, 1997
• Grant date: Jun 15, 1999
• Expiry date: Apr 17, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D4/00
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

This invention relates to a polymerizable phosphazene derivative with a general structural formula EQU .brket open-st.NP(A).sub.a (B).sub.b).brket close-st..sub.x wherein the groups A and B are bonded to phosphorus atoms through --O--, --S--, --NH--, or --NR-- (with R=C.sub.1 -C.sub.6) alkyl), and wherein A stands more precisely for a vinyl ether group or a styrene ether group, and B stands more precisely for a hydrocarbon group. The invention also relates to procedures for synthesizing such phosphazene derivatives. The phosphazenes derivatives of the invention can be cured by a process that is initiated cationically, which leads to a large number of advantages. The phosphazene derivatives of the invention can, in particular, be used as curable binders for paints, coatings, fillers, mastics, adhesives, moldings, or films. Paints or coatings comprising the phosphazene derivatives of the invention show especially high mechanical resistance and scratch resistance.