Patent · US Expired

Urea-containing (meth)acrylic acid derivatives of triisocyanates-compositions for an artificial tooth

US5070165A · kind A · utility

4Cited by

4References

9Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

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

Key dates

Filing date	Mar 1, 1991
Grant date	Dec 3, 1991
Priority date	—
Expiry date	Mar 1, 2011

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C2601/14
WIPO fieldPharmaceuticals
WIPO sectorChemistry

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, PA0 R.sup.3, R.sup.4 and R.sup.5 are identical or different and denote hydrogen or methyl, PA0 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, PA0 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 PA0 A and B are identical or different and may be aromatic or saturated.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.