Epoxide-amine dendrimers and the preparation and use thereof

US5760142A · kind A · utility

Assignee

• DENTSPLY DETREY GMBH · DE

Inventor

• Joachim E. Klee · Radolfzell, DE

Key dates

• Filing date: Dec 4, 1996
• Grant date: Jun 2, 1998
• Expiry date: Dec 4, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2650/34
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Epoxide-amine dendrimers synthesized by a repetitive and step-wise addition reaction of epoxides comprising functional moieties which are available for conversion into amino groups followed by a reaction of these groups to primary amino moieties. The amino terminated dendrimers are reacted with (2,3-epoxypropoxy) methacrylate, a monoepoxide and/or a monoisocyante. The methacrylate terminated dendrimers are polymerizable using redox initiators and/or photoinitiators. The resulting dendrimers show a very low volume shrinkage from that of the starting materials, on the order of less than about 5 percent by volume.