会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 4. 发明申请
    • A FORMALDEHYDE AND FORMATE REDUCED POLYOL PROCESS
    • 甲醛和甲醛减少多元醇方法
    • WO00058246A1
    • 2000-10-05
    • PCT/SE2000/000509
    • 2000-03-20
    • C07C29/14C07C29/38C07C31/18C07C31/22C07C31/24
    • C07C29/38C07C29/14C07C31/205C07C31/20C07C31/22C07C31/245
    • Formaldehyde and formate reduced process for preparation of a di, tri or polyalcohol from formaldehyde and a second aldehyde in the presence of an alkaline catalyst. The process comprises an aldol condensation yielding a methylolaldehyde and a subsequent crossed Cannizzaro reaction yielding said di, tri or polyalcohol and formate. The Cannizzaro reaction comprises reacting said methylolaldehyde with formaldehyde at a molar ratio said methylolaldehyde to said formaldehyde of 1:0.3-0.9 in the presence of 0.3-0.9 mole of OH on 1 mole of said methylolaldehyde. The Cannizzaro reaction is interrupted when 0.2-0.8 mole of HCOO is generated on 1 mole of said methylolaldehyde and obtained reaction mixture is in a subsequent step subjected to a transfer hydrogenation in the presence of an effective amount of at least one transfer hydrogenation catalyst.
    • 在碱性催化剂存在下,由甲醛和第二醛制备二,三或多元醇的甲醛和甲酸酯还原方法。 该方法包括产生羟甲醛的醛醇缩合物和随后的交叉的Cannizzaro反应,产生所述二,三或多元醇和甲酸盐。 坎尼扎罗反应包括在1摩尔所述羟甲基醛中,在0.3-0.9摩尔OH存在下,使所述羟甲醛与甲醛以所述羟甲醛与所述甲醛为1:0.3-0.9的摩尔比反应。 当在1摩尔所述羟甲基醛上产生0.2-0.8摩尔HCOO时,坎尼扎罗反应中断,所得反应混合物在随后的步骤中,在有效量的至少一种转移氢化催化剂存在下进行转移氢化。