Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Reexamination Certificate
2006-06-06
2006-06-06
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
Reexamination Certificate
active
07056961
ABSTRACT:
An adhesive composition for a denture base relining material which comprises an organic solvent containing no halogen atoms such as ethyl acetate, ethyl formate or acetone, a polymer such as a copolymer of methyl methacrylate and ethyl methacrylate, and a radical polymerizable monomer such as tetramethylolmethane tetramethacrylate; and a curable composition which comprises a radical polymerizable monomer, an organic peroxide such as benzoyl peroxide, a tertiary amine compound such as diethyl-p-toluidine or dipropyl-p-toluidine, and a hydroxycarboxylic acid such as malic acid or citric acid.The adhesive composition for a denture base relining material does not contain a halogen-atom-containing organic solvent whose harmful effect has been pointed out. Further, the composition has satisfactory adhesive properties and good operability and causes no degradation in the appearance of a denture base even if it sticks to an area on the surface of the denture base other than a contact area. The dental curable composition is widely used as dental materials having little surface unpolymerized layer and good curability, e.g., dental cement, a composite resin, a resin for crown and a denture base relining material.
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Robert J. Clemens, Chemical Reviews, vol. 86, No. 2, Apr. 1986, pp. 241-318.
Hashiguchi Masanao
Kawaguchi Toshio
Yamashita Mitsuhiro
Birch & Stewart Kolasch & Birch, LLP
Tokuyama Corporation
Tokuyama Dental Corporation
Yoon Tae H.
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