| abstract |
The present invention provides a polyvinyl acetal resin: which leaves few fine undissolved substances when dissolved in an organic solvent; by which the productivity can be improved when used particularly as a binder for a ceramic green sheet; from which a ceramic green sheet having excellent toughness can be obtained; and with which a laminated ceramic capacitor having excellent reliability can be manufactured. The present invention is a polyvinyl acetal resin in which the wave number A (cm-1) of a peak within a wave number range of 3,100-3,700 cm-1 and the amount (mol%) of hydroxyl groups in the IR absorption spectrum measured by an infrared spectrophotometer satisfy the relationships of expressions (1) and (2). [(3470-A)/amount of hydroxyl groups]≤5.5 (1) (3470-A)≤185 (2) A is a wave number on a low wave number side less than 3,470 cm-1, among wave numbers exhibiting transmittance a (%) satisfying [100-(100-X/2)] when the minimum transmittance of a peak within a wave number range of 3,100-3,700 cm-1 is denoted by X (%). |