Treatment of dispersion liquid of capsule |
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| 申请号 | JP10937879 | 申请日 | 1979-08-27 | 公开(公告)号 | JPS5633030A | 公开(公告)日 | 1981-04-03 |
| 申请人 | Kanzaki Paper Mfg Co Ltd; | 发明人 | HORIIKE TETSUROU; OKIMOTO SATOYUKI; SHIOZAKI TOMOHARU; | ||||
| 摘要 | PURPOSE:To remove the residual formaldehyde without spoiling the capacity of membrane, by adjusting the dispersion liquid of microcapsule having the wall membrane of aldehyde polycondensation resin in alkaline condition and then, heating and stirring after adding the reaction catalyst, such as metal hydroxide. CONSTITUTION:Residual formaldehyde in the dispersion liquid of microcapsule having the wall membrane of aldehyde polycondensation resin whicn is formed by the curing reaction of acid catalyst by using formaldehyde as one component, is heated and stirred in alkaline solution and then, is removed after adding the reaction catalyst, such as metal hydroxides or phosphates. By this method, formaldehyde can be effectively removed by the chemical denaturation treatment without spoiling a superior capacity of the capsule wall membrane. | ||||||
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| 说明书全文 | |||||||
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