摘要 |
Disclosed is a color developer for a pressure-sensitive recording paper, which comprises an acid-treated smectite clay mineral having a specific chemical composition, an X-ray diffraction pattern peculiar to dioctahedral smectite, a specific solid NMR spectrum and a specific cation exchange capacity. This color developer shows a high whiteness, a high initial color density, excellent light resistance and weatherability, and a low viscosity. |
申请人 |
MIZUSAWA INDUSTRIAL CHEMICALS, LTD., TOKIO/TOKYO, JP |
发明人 |
OGAWA, MASAHIDE, SHIBATA, NIIGATA, JP;SATO, TEIJI, SHIBATA, NIIGATA, JP;ABE, KIYOSHI, SHIBATA, NIIGATA, JP;TSUCHIDA, HISASHI, NIIGATA, JP;INOUE, HIROO, NIIGATA, JP;SAITO, MITSUO, NIIGATA, JP |