High impact prosthetic plastics
An autopolymerizing two-component prosthetic base material consisting of A) a liquid monomer component, B) a powdered filler-containing component containing at least one bead polymer modified by an elastic phase, which yields after curing a high-impact prosthetic plastic having a fracture toughness of ≧2 MPa·m 1/2 and a fracture work of ≧900 J/m 2 .
1 . Autopolymerizable two-component prosthetic basic material comprised of
A) a liquid monomer component,
B) a powdered filler-containing component which comprises at least one bead polymer modified by an elastic phase, yielding after curing a high-impact prosthetic plastic having a fracture toughness of ≧2 MPa·m 1/2 and a fracture work of ≧900 J/m 2 .
2 . Two component prosthetic basic material according to claim 1 , wherein the elastic phase is selected from the group consisting of
a. Poly-(n-butyl acrylate) (PBA)
b. Butadiene-styrene copolymer, and
c. Silicone rubber (graft copolymers).
3 . Two-component prosthetic basic material according to claim 1 further comprising one or more substances from the groups consisting of fillers, pigments, stabilizers, regulators, antimicrobial additives, UV absorbers, thixotroping agents, catalysts and crosslinking agents
4 . A high-impact prosthetic plastic having a fracture toughness of ≧2 MPa·m 1/2 and a fracture work of ≧900 J/m 2 formed from the basic material of claim 1.