A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
METHOD FOR PRODUCING MODIFIED POLYVINYL ACETAL
The present invention provides a modified polyvinyl alcohol enabling to produce polyvinyl acetal that is excellent in solubility in a solvent even with a low degree of polymerization while hardly causing reaction inhibition, coloring, and particle coarsening, and a method for producing the modified polyvinyl alcohol. The present invention also provides a modified polyvinyl acetal that is excellent in solubility in a solvent even with a low degree of polymerization, and has high elasticity, mechanical strength, and a film forming property. The present invention further provides a method for producing the modified polyvinyl acetal, a polyvinyl acetal film produced from the modified polyvinyl acetal, a method for producing the polyvinyl acetal film, a ceramic slurry composition, a method for producing the ceramic slurry composition, and a ceramic green sheet. The present invention is a modified polyvinyl alcohol including at least one functional group selected from the group consisting of hydroxyl, aldehyde, carboxyl, and lactone ring groups at a molecular end, and having a degree of saponification of 99.95 mol% or higher and a 1,2-glycol bond content of 1.4 mol% or lower.
METHOD FOR PRODUCING MODIFIED POLYVINYL ACETAL
The present invention provides a modified polyvinyl alcohol enabling to produce polyvinyl acetal that is excellent in solubility in a solvent even with a low degree of polymerization while hardly causing reaction inhibition, coloring, and particle coarsening, and a method for producing the modified polyvinyl alcohol. The present invention also provides a modified polyvinyl acetal that is excellent in solubility in a solvent even with a low degree of polymerization, and has high elasticity, mechanical strength, and a film forming property. The present invention further provides a method for producing the modified polyvinyl acetal, a polyvinyl acetal film produced from the modified polyvinyl acetal, a method for producing the polyvinyl acetal film, a ceramic slurry composition, a method for producing the ceramic slurry composition, and a ceramic green sheet. The present invention is a modified polyvinyl alcohol including at least one functional group selected from the group consisting of hydroxyl, aldehyde, carboxyl, and lactone ring groups at a molecular end, and having a degree of saponification of 99.95 mol% or higher and a 1,2-glycol bond content of 1.4 mol% or lower.
METHOD FOR PRODUCING MODIFIED POLYVINYL ACETAL
VERFAHREN ZUR HERSTELLUNG VON MODIFIZIERTEM POLYVINYLACETAL
PROCÉDÉ DE PRÉPARATION D'ACÉTAL POLYVINYLIQUE MODIFIÉ
YAMAGUCHI HIDEHIRO (author) / HIROSE YUKI (author) / NAGAI YASUHARU (author)
2017-01-11
Patent
Electronic Resource
English
MODIFIED POLYVINYL ALCOHOL MODIFIED POLYVINYL ACETAL AND CERAMIC SLURRY COMPOSITION
European Patent Office | 2018