C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
400/5103, 400/70
C08K 3/22 (2006.01) A61K 6/083 (2006.01) C08K 3/34 (2006.01) C08K 3/36 (2006.01) C09J 4/00 (2006.01)
Patent
CA 1262791
ABSTRACT OF THE DISCLOSURE A chemically curable dental restorative material is provided comprising a two-component paste-paste system wherein: (i) a first initiator-containing paste system com- prises from about 15 to 40% by weight of a polymerizable methacrylic ester monomeric system comprising a cross- linking methacrylate monomer, at least one co-monomeric methacrylate diluent and a free radical-generating cata- lyst, and from about 60 to 85% by weight of an inorganic filler prepared by wet milling, surface etching milling and a silanizing milling; and (ii) a second accelerator-containing paste system comprises from about 15 to 31% by weight of a polymeriz- able methacrylic ester monomeric system comprising a cross-linking methacrylate monomer, at least one co- monomeric methacrylate diluent and an inorganic amine accelerator and from 69 to 85% by weight of an inorganic filler prepared by wet milling, surface etching milling and a silanizing milling; said first and second paste systems being admixed in substantially equal proportions to form the chemically curable dental restorative material. -49-
487759
Pentron Corporation
Sim & Mcburney
LandOfFree
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