公开(公告)号：US20030166817A1

公开(公告)日：2003-09-04

申请号：US10348959

申请日：2003-01-23

Applicant: DEGUSA AG

Inventor： Dieter Barfurth ,  Helmut Mack

IPC: C08G077/00

CPC classification number: C08G77/20 ,  C08G77/045 ,  C08G77/06 ,  C09D183/04

Abstract: The present invention provides a process for preparing a mixture, which mixture includes catenate and cyclic siloxanes of formula I R3SinullOnull(SiR2nullOnull)mSiR3 nullnull(I) and cyclic siloxanes of formula II 1 wherein m is an integer from 0 to 40 and n is an integer from 2 to 40, wherein R2 and R3 are each independently an organic functional group selected from the group including alkyl, aryl, vinyl, and alkoxy groups, and wherein there is not more than one vinyl group or aryl group per silicon atom, said process including a controlled hydrolysis, condensation or cocondensation reaction of at least one monomeric silane in alcoholic solution in the presence of an acidic catalyst, which reaction includes contacting alcohol, water, and at least one chlorosilane component selected from the group including (i), (ii), (iii): (i) at least one arylchlorosilane; (ii) at least one admixture selected from the group including alkylchlorosilane and arylchlorosilane, arylchlorosilane and vinylchlorosilane, alkylchlorosilane and vinylchlorosilane, and arylchlorosilane and vinylchlorosilane and alkylchlorosilane; (iii) at least one selected from the group including chlorosilane, alkylchlorosilane, arylchlorosilane, and vinylchlorosilane in two or more separate batches to obtain two or more separate mixtures and thereafter combining the mixtures; to form the mixture of the catenate and cyclic siloxanes. The present invention also provides the mixtures and the use of such mixtures.

Abstract translation: 本发明提供一种制备混合物的方法，该混合物包括式I的R 3 Si-O-（SiR 2 -O-）m SiR 3（I）的链状烯烃和环状硅氧烷和式II的环状硅氧烷，其中m是0至40的整数 n为2〜40的整数，其中R2和R3各自独立地为选自烷基，芳基，乙烯基和烷氧基的有机官能团，并且其中不超过一个乙烯基或芳基 硅原子，所述方法包括在酸性催化剂存在下至少一种单体硅烷在醇溶液中的受控水解，缩合或缩聚反应，该反应包括使醇，水和至少一种选自以下的氯代硅烷组分： （i），（ii），（iii）：（i）至少一种芳基氯硅烷; （ii）至少一种选自包括烷基氯硅烷和芳基氯硅烷，芳基氯硅烷和乙烯基氯硅烷，烷基氯硅烷和乙烯基氯硅烷以及芳基氯硅烷和乙烯基氯硅烷和烷基氯硅烷的混合物; （iii）选自包括氯硅烷，烷基氯硅烷，芳基氯硅烷和乙烯基氯硅烷在内的组中的至少一种，分两批或更多批次，以获得两种或更多种分离的混合物，然后混合该混合物; 以形成链状和环状硅氧烷的混合物。 本发明还提供了这些混合物的混合物和用途。