发明名称 |
Preparation of aqueous N-methylol amide solutions |
摘要 |
A process for the preparation of aqueous solutions of N-methylol-acrylamide and/or N-methylol-methacrylamide comprising forming a homogeneous mixture of aqueous solution of formaldehyde and aqueous solution of acrylamide and/or methacrylamide and passing the homogeneous mixture through an ion-exchange resin bed based on a styrene-divinylbenzene polymer with tertiary amino groups at an elevated temperature so that the reaction is at least 80% theoretically completed when the mixture issues from the bed, characterized in that the ion exchanger is initially in the form of its free base, the initial temperature and velocity of the homogeneous mixture being adjusted to maintain the bed temperature between 35 DEG and 60 DEG C. and continuing the passage of the homogeneous mixture through the exchanger bed until the bed temperature drops and/or the pH of the exiting solution is below 8.
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申请公布号 |
US4567297(A) |
申请公布日期 |
1986.01.28 |
申请号 |
US19840659711 |
申请日期 |
1984.10.11 |
申请人 |
WACKER-CHEMIE GMBH |
发明人 |
BALL, PETER;MARQUARDT, KLAUS;SELIG, MANFRED;STAUDINGER, GUENTHER |
分类号 |
C07C231/00;C07C233/09;C07C233/16;(IPC1-7):C07C102/00 |
主分类号 |
C07C231/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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