Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Water reducing agent and preparation method thereof
The invention provides a water reducing agent and a preparation method thereof. The preparation method comprises the following steps: providing a ketone compound, an aldehyde compound, a sulfonating agent and a catalyst, wherein the mass ratio of the ketone compound to the aldehyde aqueous solution to the sulfonating agent to the catalyst is 100: (260-300): (95-130): (15-25), and the content of the aldehyde compound in the aldehyde aqueous solution is 30%-40%; dissolving 50-80% of a sulfonating agent in water, and adding an aldehyde aqueous solution to obtain a first mixed solution; adding 50-80% of ketone compounds into the first mixed solution, and carrying out sulfonation reaction to obtain a pre-sulfonation solution; dissolving the rest sulfonating agent and catalyst in water to obtain a second mixed solution; adding the rest ketone compounds into the second mixed solution to obtain a third mixed solution; and dropwise adding a pre-sulfonation solution into the third mixed solution, and carrying out condensation reaction to obtain the water reducing agent. The preparation method of the water reducing agent has the advantages of controllable temperature, short production period and high production efficiency.
本发明提供一种减水剂及其制备方法。所述制备方法包括以下步骤：提供酮类化合物、醛类化合物、磺化剂、及催化剂，其中，酮类化合物、醛类水溶液、磺化剂、及催化剂的质量比为100：260～300：95～130：15～25，所述醛类水溶液中，醛类化合物的含量为30～40％；将50～80％的磺化剂溶于水中，加入醛类水溶液，得到第一混合溶液；向所述第一混合溶液中加入50～80％的酮类化合物，进行磺化反应，得到预磺化溶液；将剩余的磺化剂、催化剂溶于水中，得到第二混合溶液；向所述第二混合溶液中加入剩余的酮类化合物，得到第三混合溶液；及向第三混合溶液中滴加预磺化溶液，进行缩合反应，得到所述减水剂。本发明的减水剂的制备方法具有温度可控，生产周期短、及生产效率高的优点。
Water reducing agent and preparation method thereof
The invention provides a water reducing agent and a preparation method thereof. The preparation method comprises the following steps: providing a ketone compound, an aldehyde compound, a sulfonating agent and a catalyst, wherein the mass ratio of the ketone compound to the aldehyde aqueous solution to the sulfonating agent to the catalyst is 100: (260-300): (95-130): (15-25), and the content of the aldehyde compound in the aldehyde aqueous solution is 30%-40%; dissolving 50-80% of a sulfonating agent in water, and adding an aldehyde aqueous solution to obtain a first mixed solution; adding 50-80% of ketone compounds into the first mixed solution, and carrying out sulfonation reaction to obtain a pre-sulfonation solution; dissolving the rest sulfonating agent and catalyst in water to obtain a second mixed solution; adding the rest ketone compounds into the second mixed solution to obtain a third mixed solution; and dropwise adding a pre-sulfonation solution into the third mixed solution, and carrying out condensation reaction to obtain the water reducing agent. The preparation method of the water reducing agent has the advantages of controllable temperature, short production period and high production efficiency.
本发明提供一种减水剂及其制备方法。所述制备方法包括以下步骤：提供酮类化合物、醛类化合物、磺化剂、及催化剂，其中，酮类化合物、醛类水溶液、磺化剂、及催化剂的质量比为100：260～300：95～130：15～25，所述醛类水溶液中，醛类化合物的含量为30～40％；将50～80％的磺化剂溶于水中，加入醛类水溶液，得到第一混合溶液；向所述第一混合溶液中加入50～80％的酮类化合物，进行磺化反应，得到预磺化溶液；将剩余的磺化剂、催化剂溶于水中，得到第二混合溶液；向所述第二混合溶液中加入剩余的酮类化合物，得到第三混合溶液；及向第三混合溶液中滴加预磺化溶液，进行缩合反应，得到所述减水剂。本发明的减水剂的制备方法具有温度可控，生产周期短、及生产效率高的优点。
Water reducing agent and preparation method thereof
减水剂及其制备方法
DU KELU (Autor:in) / LIU ZUNYU (Autor:in) / LI XIANGHE (Autor:in)
06.04.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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