Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1997-06-20
1999-10-12
Merriam, Andrew E. C.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
524556, 524558, 524456, 524494, A61K 6083
Patent
active
059656328
ABSTRACT:
A two paste glass ionomer type dental cement system, with both pastes being, preferably, of similar consistency. The first paste represents primarily a suspension of an inert filler in a water solution of polyacrylic acid, or its copolymers with other ethylenically unsaturated acids, having molecular weight of 25,000 to 100,000 and, optionally, various additives, such as filler suspending agents, coloring agents, agents influencing working/setting time (retardants or accelerators), Theological agents, pH modifiers, etc. The other paste represents primarily a particulate glass flux containing silicon and aluminum oxides, calcium fluoride and, optionally, other inorganic salts, including aluminum phosphate, and sodium, barium and aluminum fluorides, suspended in a liquid medium consisting primarily of a water solution of a hydrophilic acrylic monomer or polymer. In order to achieve a desirable consistency, organic or inorganic thickening agents may be added in suitable quantities.
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Butler David V.
MacDonald Jeffrey R. H.
Orlowski Jan A.
Gitler Stewart L.
Kent Evan M.
Merriam Andrew E. C.
Scientific Pharmaceuticals Inc.
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