Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Reexamination Certificate
2011-05-31
2011-05-31
Seidleck, James (Department: 1765)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
C523S115000, C523S117000, C523S200000
Reexamination Certificate
active
07951851
ABSTRACT:
A curable composition for dental use, containing a polymerizable monomer, inorganic particles (A) having irregular shapes and an average particle size of from 1.0 to 5.0 μm, wherein the inorganic particles (A) are surface-treated with a silane coupling agent (a) represented by the formula (I):wherein R1is a hydrogen atom or a methyl group, R2is a hydrolyzable group, R3is a hydrocarbon group having 1 to 6 carbon atoms, X is an oxygen or sulfur atom, p is 2 or 3, and q is an integer of from 8 to 13, and inorganic particles (B) having irregular shapes and/or spherical or nearly spherical shapes, and an average particle size of from 0.01 to 0.10 μm, wherein the inorganic particles (B) are surface-treated with a silane coupling agent (b) represented in the same manner as in the silane coupling agent (a) except that q in the formula (I) is an integer of from 1 to 6, wherein the inorganic particles (A) and the inorganic particles (B) are contained in amounts of from 85 to 98% by weight and from 2 to 15% by weight, respectively, of the entire amount of the inorganic particles. The curable composition for dental use of the present invention can be suitably used as a material capable of substituting a part or all of a natural tooth in the field of dental therapy.
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Kuboe Yoshiko
Sekiguchi Takahiro
Kuraray Medical Inc.
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Salamon Peter A
Seidleck James
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