A method for producing a carbinol-modified organosiloxane, which comprises steps (A) to (C), is an efficient production method whereby it becomes possible to reduce the production of a by-product of the reaction for the production of a terminal-carbinol-modified organosiloxane.
(A) a step of supplying the following components (a) to (c) to a tubular reactor continuously:
(a) an organohydrogensiloxane represented by formula (I)
(wherein R1's independently represent a monovalent hydrocarbon group having 1 to 20 carbon atoms; and m represents an integer of 0 to 500);
(b) a compound represented by formula (II):
R2-Z-OH
(wherein R2 represents a vinyl group or an allyl group; and Z represents a bivalent hydrocarbon group); and
(c) a platinum catalyst in an amount of 0.005 ppm by mass or more and less than 1.0 ppm by mass in terms of metal platinum content relative to the total amount of the components (a) to (c);
(B) a step of subjecting the components (a) to (c) to a hydrosilylation reaction while allowing these components to pass through the tubular reactor; and
(C) a step of removing a reaction product.
一种生产
甲醇改性有机
硅氧烷的方法,包括步骤(A)至(C),是一种高效的生产方法,可以减少生产端
甲醇改性有机
硅氧烷反应副产物的产生。
(A) 向管式反应器连续供应以下组分(a)至(c)的步骤:
(a) 由式(I)表示的有机氢
硅氧烷
(其中 R1's 独立地代表具有 1 至 20 个碳原子的单价烃基;m 代表 0 至 500 的整数);
(b) 由式 (II) 代表的化合物:
R2-Z-OH
(其中 R2 代表
乙烯基或烯丙基;Z 代表二价烃基);以及
(c)
铂催化剂,相对于(a)至(c)组分的总量,其
金属
铂含量为 0.005 ppm (质量分数) 或以上,但小于 1.0 ppm (质量分数);
(B) 使(a)至(c)组分进行氢
硅烷化反应,同时让这些组分通过管式反应器;以及
(C) 去除反应产物的步骤。