POLYVINYL ACETAL, POLYVINYL ACETAL COMPOSITION, INK, COATING MATERIAL, DISPERSANT, HEAT-DEVELOPABLE PHOTOSENSITIVE MATERIAL, CERAMIC GREEN SHEET, PRIMER FOR PLASTIC LENS, RECORDING AGENT FOR WATER-BASED INK, AND ADHESIVE FOR METAL FOIL

摘要

It is an object of the invention to provide polyvinyl acetal, a polyvinyl acetal composition, ink, coating material, a dispersant, a ceramic green sheet, a primer for a plastic lens, a recording material for water-based ink and an adhesive for metal foil, which are superior in film-forming capability, dispersibility of a dispersion matter and adhesion to the surface to be coated, and can realize higher solid contents. ??The invention provides a polyvinyl acetal, which contains one or more functional groups in a molecule.