公开(公告)号：US20190040206A1

公开(公告)日：2019-02-07

申请号：US16074656

申请日：2016-11-02

Applicant: Wacker Chemie AG

Inventor： Georg LOESSEL ,  Frank BETSCHINGER ,  Manfred MEISENBERGER

IPC: C08G77/16 ,  C08G77/06

Abstract: Organopolysiloxanes having an OH content of 3.0-10.0% by weight are produced in a continuous process in which silanes of the formula I R1mSiR2nXo   (I), in which R1 is a C1-C18-hydrocarbon radical and R2 is a C1-C6-alkoxy radical and X is a chlorine or bromine radical m is 1, 2 or 3, n is 0, 1, 2 or 3 and o is 0, 1, 2 or 3, with the proviso that 4−m=n+o, and that in at least 30 mol % of the silanes of the general formula I, n≠0 und o≠0,water, and water-insoluble non-polar solvent are metered in continuously into a reactor to form a reaction mixture and the reaction mixture is continuously discharged from the reactor.

公开(公告)号：US20160145396A1

公开(公告)日：2016-05-26

申请号：US14899153

申请日：2014-06-18

Applicant: WACKER CHEMIE AG

Inventor： Georg LOESSEL ,  Manfred MEISENBERGER ,  Wolfgang WEWERS

IPC: C08G77/16 ,  C08G77/06

CPC classification number: C08G77/16 ,  C08G77/06

Abstract: Organopolysiloxanes having an OH content of from 3.0-10.0 weight percent are continuously produced by continuously feeding chlorosilanes, alkoxysilanes, water, and non-polar solvent essentially non-miscible in water, continuously discharging a reaction mixture containing organopolysiloxanes dissolved in a solvent phase, and optionally separating organopolysiloxanes from the solvent phase, wherein the chlorosilanes and alkoxysilanes are added in respective weight fractions of 95-60% and 5-40% based on the total weight of chlorosilanes and alkoxysilanes. The process does not employ and polar solvents, and produces products with improved flash points while minimizing complexity and expense of waste water treatment.

Abstract translation: OH含量为3.0-10.0重量％的有机聚硅氧烷通过连续供给在水中基本不混溶的氯硅烷，烷氧基硅烷，水和非极性溶剂，连续排出溶解在溶剂相中的含有机聚硅氧烷的反应混合物而连续生产， 任选地将有机聚硅氧烷从溶剂相分离，其中基于氯硅烷和烷氧基硅烷的总重量，氯硅烷和烷氧基硅烷以相应的重量分数加入95-60％和5-40％。 该方法不使用极性溶剂，并产生具有改善闪点的产品，同时最大限度地减少废水处理的复杂性和费用。

公开(公告)号：US20180265640A1

公开(公告)日：2018-09-20

申请号：US15537163

申请日：2016-07-21

Applicant: Wacker Chemie AG

Inventor： Frank SANDMEYER ,  Georg LOESSEL ,  Marko PRASSE

IPC: C08G77/06 ,  C08G77/18

CPC classification number: C08G77/06 ,  C08G77/18

Abstract: Multistep continuous and semicontinuous hydrolysis and condensation of chlorosilanes with alcohol containing minimal water in a column in a first step to form a silicone resin intermediate, followed by further condensation provides silicone resins in reproducible fashion substantially free of hydrogen chloride, without reactor gelatin.

公开(公告)号：US20210130550A1

公开(公告)日：2021-05-06

申请号：US16963213

申请日：2018-01-19

Applicant: WACKER CHEMIE AG

Inventor： Steffen DOERRICH ,  Georg LOESSEL ,  Pedro MARANI ,  Daniel SCHILDBACH ,  Volker STANJEK

IPC: C08G77/18 ,  C04B28/04 ,  C08G77/24 ,  C04B24/42 ,  C08G77/06

Abstract: Alkylsilicone resins containing at least 20 mol percent of siloxy units bearing a >Cs alkyl group and having from 5-20 weight percent of alkoxy groups may be prepared directly by hydrolysis of chlorosilanes, and are highly effective as bulk hydrophobing agents in the preparation of fibrocement.

公开(公告)号：US20190270851A1

公开(公告)日：2019-09-05

申请号：US16349085

申请日：2016-11-10

Applicant: WACKER CHEMIE AG

Inventor： Georg LOESSEL ,  Manfred MEISENBERGER

IPC: C08G77/06 ,  C08G77/18 ,  C08G77/24

Abstract: High hydroxyl-content organopolysiloxanes of low molecular weight are prepared in a continuous process by metering in alkoxysilanes and chlorosilanes in a weight proportion of 60:40 or more to a reaction mixture containing water and non-polar solvent, and continuously removing an organic phase containing organopolysiloxanes from the reaction mixture.

公开(公告)号：US20170349709A1

公开(公告)日：2017-12-07

申请号：US15535453

申请日：2016-07-21

Applicant: Wacker Chemie AG

Inventor： Frank SANDMEYER ,  Georg LOESSEL ,  Marko PRASSE

IPC: C08G77/06 ,  C08G77/18

CPC classification number: C08G77/06 ,  C08G77/18

Abstract: Highly condensed silicon resins are obtained by a three step continuous procedure without the use of organic solvent, by preliminarily forming a partial alkoxylate by reacting a chlorosilane with alcohol containing no or a minimal amount of water, feeding the partial alkoxylate to a reaction column to form a silicone resin of low degree of condensation, and further condensing the silicone resin intermediate thus formed to produce a silicone resin product.

公开(公告)号：US20160194452A1

公开(公告)日：2016-07-07

申请号：US14909165

申请日：2014-07-30

Applicant: WACKER CHEMIE AG

Inventor： Frank SANDMEYER ,  Enno FUNK ,  Georg LOESSEL

IPC: C08G77/04

CPC classification number: C08G77/04 ,  C08G77/12 ,  C08G77/20 ,  C08G77/70 ,  C08G77/80 ,  C09D183/04 ,  H01L23/296 ,  H01L33/56 ,  H01L2924/0002 ,  C08K5/5403 ,  C08L83/00 ,  H01L2924/00

Abstract: Addition-crosslinkable silicone resin compositions containing a branched organopolysiloxane bearing each of Si—H groups, alkenyl groups, and aryl groups, and also containing blocks of linear organopolysiloxane free of Si—H and alkenyl groups with a chain length of at least three siloxy groups, and further bearing at least one aryl group, serve as excellent potting compositions for electronic devices, particularly LEDs, with high refractive index and optical transmittance, and wide processing latitude.

Abstract translation: 含有交联性有机硅树脂组合物，其含有Si-H基，链烯基和芳基各自的支链有机聚硅氧烷，并且还含有不含Si-H的直链有机聚硅氧烷链和链长至少为三个甲硅烷氧基的链烯基 并且还带有至少一个芳基，用作具有高折射率和光透射率以及宽的加工范围的电子器件，特别是LED的优异灌封组合物。