Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Reexamination Certificate
2005-07-12
2005-07-12
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, C522S183000, C526S277000
Reexamination Certificate
active
06916858
ABSTRACT:
A one-pack type dental adhesive composition that does not require a pre-treatment such as an etching treatment and a priming treatment and can surely adhere a dental restoration material to a tooth structure and keep an adhesive effect over a long period of time, comprised of a polymerizable composition containing (a) 1˜5% by weight of a polymerizable monomer containing a phosphoric acid group, (b) 10˜40% by weight of a polymerizable monomer containing a plurality of carboxyl groups in one molecule, or being readily reactive with water to generate a plurality of carboxyl groups in one molecule, (c) 20˜40% by weight of an acid group-free polymerizable monomer or a mixture of two or more acid group-free polymerizable monomers, both having a solubility of water at 25° C. of 25% by weight or less, and (d) 15˜50% by weight of water, with (e) 0.1˜5.0 parts by weight, based on 100 parts by weight of the polymerizable composition, of a photo-polymerization initiator and (f) a viscosity modifier having a mean particle size of 0.01˜0.05 μm, the dental adhesive composition having a viscosity of 0.1˜1 Pa·s.
REFERENCES:
patent: 5089051 (1992-02-01), Eppinger et al.
patent: 5264513 (1993-11-01), Ikemura et al.
patent: 5834532 (1998-11-01), Yamamoto et al.
patent: 5925690 (1999-07-01), Fuchigami et al.
patent: 1 066 813 (2001-01-01), None
Patent Abstracts of Japan, JP 2001-072523, Mar. 21, 2001.
Arita Akishi
Kojima Shin-ichi
GC Corporation
Yoon Tae H.
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