A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
POLYVINYL ACETAL RESIN
The present invention provides a polyvinyl acetal resin which leaves less fine undissolved matter when dissolved in an organic solvent and thus can improve productivity particularly when used as a binder for a ceramic green sheet, and which can also provide a ceramic green sheet having excellent toughness and enables production of a highly reliable multilayer ceramic capacitor. Provided is a polyvinyl acetal resin having: a wavenumber A (cm-1) of a peak within a range of 3,100 to 3,700 cm-1 in an IR absorption spectrum measured using an infrared spectrophotometer; and a hydroxy group content (mol%), the wavenumber A of the peak and the hydroxy group content satisfying relations of the following formulas (1) and (2): 3,470−A/Hydroxygroupcontent≤5.53,470−A≤185 wherein A is a wavenumber which is lower than 3,470 cm-1 and at which a transmittance a (%) satisfying [100 - (100 - X)/2] is exhibited, where X (%) is a minimum transmittance of the peak within the wavenumber range of 3,100 to 3,700 cm-1.
POLYVINYL ACETAL RESIN
The present invention provides a polyvinyl acetal resin which leaves less fine undissolved matter when dissolved in an organic solvent and thus can improve productivity particularly when used as a binder for a ceramic green sheet, and which can also provide a ceramic green sheet having excellent toughness and enables production of a highly reliable multilayer ceramic capacitor. Provided is a polyvinyl acetal resin having: a wavenumber A (cm-1) of a peak within a range of 3,100 to 3,700 cm-1 in an IR absorption spectrum measured using an infrared spectrophotometer; and a hydroxy group content (mol%), the wavenumber A of the peak and the hydroxy group content satisfying relations of the following formulas (1) and (2): 3,470−A/Hydroxygroupcontent≤5.53,470−A≤185 wherein A is a wavenumber which is lower than 3,470 cm-1 and at which a transmittance a (%) satisfying [100 - (100 - X)/2] is exhibited, where X (%) is a minimum transmittance of the peak within the wavenumber range of 3,100 to 3,700 cm-1.
POLYVINYL ACETAL RESIN
POLVINYL-ACETAT-HARZ
RÉSINE D'ACÉTAL DE POLYVINYLE
NAKAMURA KAZUTO (author) / ARAI YOSHITO (author) / HIGUCHI ISAO (author)
2023-07-19
Patent
Electronic Resource
English
IPC:
C08F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
/
C04B
Kalk
,
LIME
/
C09D
Überzugsmittel, z.B. Anstrichstoffe, Firnisse oder Lacke
,
COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS
/
H01G
Kondensatoren
,
CAPACITORS