Urethane di(meth)acrylate derivatives of 1,3-bis(1-isocyanato-1-methylethyl)benzene

US6653375B2 · kind B2 · utility

Assignee

• Ivoclar AG · LI

Inventors

• Norbert Moszner · Eschen, LI
• Volker Rheinberger · Vaduz, LI
• Thomas Völkel · Oberreitnau, DE
• Urs Karl Fischer · Arbon, CH

Key dates

• Filing date: Jan 25, 1999
• Grant date: Nov 25, 2003
• Expiry date: Jan 25, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C271/20
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The invention relates to urethane di(meth)acrylate derivatives of 1-3-bis(1-isocyanato-1-methylethyl)benzene according to Formula (I) in which R is hydrogen or a straight-chained C1-C8 alkyl radical; X and Y independently of each other stand for R1 being a substituted or unsubstituted C6- to C12-aryl or C7- to C16-alkyl aryl radical; R2 hydrogen, a C1- to C5-alkyl or a substituted or unsubstituted C6- to C12-aryl radical; R3 hydrogen or a methyl radical; R4 a C1- to C8-alkylene radical which can be broken by oxygen atoms, or a phenylene radical; R5 hydrogen or a methyl radical; R6 a substituted or unsubstituted C6- to C12-aryl or C7- to C16-alkyl aryl radical; Z being —CO— or a chemical bond and W standing for oxygen, sulphur or NR7, R7 being hydrogen or a straight-chained C1- to C6-alkyl radical. The substances are suitable in particular for the production of dental materials.