Process for the production of ceramic green films with acetalized polyvinyl alcohols
AssigneeKuraray Europe GmbH
InventorsMichael Frank, Robert Fuss
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Abstract
Acetalized polyvinyl alcohols having a high residual polyvinyl acetate content are suitable as use as dispersing agents in the production of ceramic green films.
Claims27
A process for the production of ceramic green films or ceramic moulded bodies, said process comprising casting and drying a suspension comprising one or more inorganic pigments, one or more organic solvents, one or more binders, one or more plasticizers, and one or more dispersing agents, wherein an acetalized polyvinyl alcohol with a vinyl acetate content of 8 to 50% by weight and a degree of polymerization Pw of 100 to 1200 is used as said dispersing agent, wherein said acetalized polyvinyl alcohol does not contain 1-alkyl vinyl alcohol units.
In a process for production of ceramic green films or ceramic moulded bodies, said process comprising casting and drying a suspension, the improvement wherein said suspension contains, as a dispersing agent, an acetalized polyvinyl alcohol having a vinyl acetate content of 8 to 50% by weight and a degree of polymerization of 100 to 1200, wherein said acetalized polyvinyl alcohol does not contain 1-alkyl vinyl alcohol units.
A suspension composition comprising one or more inorganic pigments, one or more organic solvents, one or more binders, one or more plasticizers, and one or more dispersing agents, wherein an acetalized polyvinyl alcohol with a vinyl acetate content of 8 to 50% by weight and a degree of polymerization Pw of 100 to 1200 is used as said dispersing agent, wherein said acetalized polyvinyl alcohol does not contain 1-alkyl vinyl alcohol units.
Dependencies are inferred from the claim text.