Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Reexamination Certificate
2006-10-03
2006-10-03
Yoon, Tae H. (Department: 1714)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
C523S120000, C524S431000, C433S228100
Reexamination Certificate
active
07115674
ABSTRACT:
The present invention refers to dental self-curing resin compositions having enhanced mechanical and physical properties. In particular, the present invention relates to dental self-curing resin compositions consisting of (i) a Paste A composition containing the multifunctional prepolymer mixture of 2,2-bis-[4-(2-hydroxy-3-methacryloxypropoxy)phenyl]propane (“Bis-GMA”) and multifunctional prepolymer formed by substituting hydrogen atoms in hydroxyl group with methacrylate groups in the Bis-GMA molecules, and further containing a diluent, an adhesive monomer, a polymerization initiator, a polymerization inhibitor, a light stabilizer, an antioxidant, an inorganic pigment and an inorganic filler; and ii) a Paste B composition containing the same prepolymer mixture in the Paste A composition, and further containing a diluent, an adhesive monomer, a reductant, a polymerization inhibitor, a light stabilizer, an antioxidant, an inorganic pigment and an inorganic filler. The composition according to the present invention has better physical and mechanical properties than that of conventional compositions and is an ointment-ointment system able to be conveniently used.
REFERENCES:
patent: 4427799 (1984-01-01), Orlowski et al.
patent: RE32073 (1986-01-01), Randklev
patent: 5122061 (1992-06-01), Wakumoto et al.
patent: 5228907 (1993-07-01), Eppinger et al.
patent: 5444104 (1995-08-01), Waknine
Baek Kyu Hyun
Han Dong Keun
Kim Min Sung
Park Kwang Soo
Park Sang Soon
Dentkist, Inc.
Jones Day
Yoon Tae H.
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