Dreve-otoplastik Gmbh

Derve-otoplastik Gmbh

Reiner Altmann

Martin Klare

Thomas Veit

Michael Kutschinski

Georgia Meissner

A two-component addition-crosslinking silicone comprises (a) 0.1-70% by weight polyorganosiloxanes containing at least two unsaturated groups in the molecule; (b) 0.1-15% by weight polyorganohydrogensiloxanes containing at least two SiH groups in the molecule; (c) 0.01-2.0% by weight noble metal catalyst; and (d) 0.1-5% by weight of a non-toxic antimicrobial additive or a combination of at least two non-toxic antimicrobial additives.

Antimicrobial polymerizable ear piece material

A biocompatible, low-viscosity, radiation-curable composition for producing antimicrobial earpieces contains:

Low-viscosity radiation-curable composition for making an earpiece

The invention relates to a biocompatible, low-viscous, radiation curable formulation, particularly for use in stereolithography, for use in medical technology, in particular, for producing earpieces, containing: a) 55-95% by weight of a monomeric or oligomeric dimethacrylate based on bisphenol A or bisphenol F; b) 0-20% by weight of a urethane methacrylate having a functionality of n&#x3c;4 and a viscosity&#x3c;15 Pa s; c) 2-15% by weight of a monomeric aliphatic or cycloaliphatic dimethacrylate having a viscosity&#x3c;5 Pa s; d) 0-15% by weight of a monofunctional methacrylate having a viscosity&#x3c;3 Pa s; e) 0.5-6% by weight of a photoinitiator or a combination of a number of photoinitiators whose absorption is located within the wavelength range of the laser beam used; f) 0.0001-2% by weight of the inhibitor 2,2,6,6-tetramethylpiperidin-1-yloxy (free radical), also in conjunction with known inhibitors; g) 0-40% by weight of fillers; h) 0-5% by weight of coloring pigments; i) 0-5% by weight of remaining additives such as UV stabilizers or spreading additives, whereby the proportions of constituents a) to h) total 100% by weight.

Growing community of inventors

Castrop-Rauxel, Germany

Reiner Altmann