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发明授权
US06943264B2 Preparation of branched siloxane 有权
支链硅氧烷的制备

Preparation of branched siloxane
摘要：
By reacting a branched siloxane compound of formula (2) containing compounds of formula (1) as an impurity with a disiloxane compound of formula (3) in the presence of an acid compound, there is prepared a branched siloxane of formula (2) containing a reduced level of compounds of formula (1). R1nSi(OSiR23)3-n(OR3)  (1) R1nSi(OSiR23)4-n  (2) R23SiOSiR23  (3) R1 is a monovalent hydrocarbon group, R2 and R3 are H or monovalent hydrocarbon groups, and n is 0 or 1.
摘要（中）：

通过使含有式（1）的化合物作为杂质的式（2）的支链硅氧烷化合物在酸化合物存在下与式（3）的二硅氧烷化合物反应，制备式（2）的支链硅氧烷，其含有 降低水平的式（1）化合物。 <？in-line-formula description =“In-line Formulas”end =“lead”？> R＆lt; 1＆lt; n＆gt;＆lt; 3-n（或<3>）（1）<？in-line-formula description =“In-line Formulas”end = “tail”？> <？in-line-formula description =“In-line Formulas”end =“lead”？> R＆lt; 1＆lt; 2-n（2）<？in-line-formula description =“In-line Formulas”end =“tail”？> < ？in-line-formula description =“In-line Formulas”end =“lead”？> R＆lt; 2＆lt; 3＆gt; SiOSiR＆lt; 2＆gt; 3（3）<？in-line-formula description =“In-line formula”end =“tail”？> R 1是单价烃基，R 2 R 3和R 3是H或一价烃基，n是0或1。

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