Urea-containing (meth) acrylic acid derivatives of triisocyanates

US5008436A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Michael Muller · Bensberg, DE
• Wolfgang Podszun · Neunburg vorm Wald, DE
• Jens Winkel · Cologne, DE

Key dates

• Filing date: May 1, 1990
• Grant date: Apr 16, 1991
• Expiry date: May 1, 2010

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2601/14
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

For filling and forming teeth, novel (meth)acrylic acid derivatives of triisocyanates of the formula ##STR1## wherein R.sup.1 and R.sup.2 are identical or different and stand for hydrogen or a lower alkyl radical, PA1 R.sup.3, R.sup.4 and R.sup.5 are identical or different and denote hydrogen or methyl, PA1 Y.sup.1 to Y.sup.3 are identical or different and denote divalent straight-chain or branched hydrocarbon radicals of 2 to 15 carbon atoms which may optionally include 1 to 3 oxygen bridges and which may be unsubstituted or substituted by 1 to 4 additional (meth)acryloyloxy radicals, PA1 X.sup.1 to X.sup.3 are identical or different and denote --NR.sup.1 -- or --O--, at least one of the radicals X.sup.1 to X.sup.3 denoting --NR.sup.1 --, and the rings PA1 A and B are identical or different and may be aromatic or saturated.