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US 5,376,406 AGranted
Method for preparing decomposable film and its utilization
AssigneeMitsui Toatsu Chemicals, Inc.
InventorsTadashi Asanuma, Kaoru Kawanishi
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AssigneeMitsui Toatsu Chemicals, Inc.
InventorsTadashi Asanuma, Kaoru Kawanishi
Estimating the term…
A method for preparing a decomposable film which comprises the steps of dispersing poly-.alpha.-methylstyrene or a polyalkylene carbonate in water, or preferably dissolving poly-.alpha.-methylstyrene or the polyalkylene carbonate in a solvent, dispersing the resulting solution in water, vaporizing the solvent so that the content of the solvent may be in the range of from 20 to 100% by weight based on the weight of poly-.alpha.-methylstyrene or the polyalkylene carbonate, applying the resulting aqueous emulsion, and then drying the same; and a method for preparing a metal film having a flat surface which comprises the steps of depositing a metal on the surface of the decomposable film, and then treating the film at a temperature higher than the decomposition temperature of the film.
A method for preparing a decomposable film which comprises the steps of applying to a surface an aqueous emulsion obtained by dispersing poly-.alpha.-methylstyrene having a number average molecular weight in the range of from 5,000 to 1,000,000 or a polyalkylene carbonate having a number average molecular weight in the range of from 1,000 to 1,000,000 in water, and then drying the emulsion.
A method for preparing a metal film having a flat surface which comprises the steps of applying, onto a coarse surface, an aqueous emulsion obtained by dispersing poly-.alpha.-methylstyrene having a number average molecular weight in the range of from 5,000 to 1,000,000 or a polyalkylene carbonate having a number average molecular weight in the range of from 1,000 to 1,000,000 in water;
Dependencies are inferred from the claim text.