公开(公告)号：US20230203275A1

公开(公告)日：2023-06-29

申请号：US16961529

申请日：2018-10-26

Applicant: WACKER CHEMIE AG

Inventor： Detlev OSTENDORF ,  Steffen DOERRICH ,  Marko PRASSE

IPC: C08K5/19 ,  C08G77/20 ,  C08G77/18 ,  C08K7/02 ,  C08J5/10 ,  C08K3/36

CPC classification number: C08K5/19 ,  C08G77/20 ,  C08G77/18 ,  C08K7/02 ,  C08J5/10 ,  C08K3/36 ,  C08J2383/04

Abstract: Compositions containing an aliphatically unsaturated silicone resin, an organic compound containing a (meth)acrylate or (meth)acrylamide group, a free radical initiator, and an organylammonium salt are useful in preparing composite articles, especially artificial stone.

公开(公告)号：US20210171716A1

公开(公告)日：2021-06-10

申请号：US17268709

申请日：2018-08-24

Applicant: WACKER CHEMIE AG

Inventor： Marko PRASSE

IPC: C08G77/08 ,  C08G77/16 ,  C08G77/00

Abstract: Branched organopolysiloxanes are prepared from alkoxysilanes and polydiorganosiloxanes over two stages by basic equilibration and subsequent acid-catalyzed reaction with water to the desired degree of condensation, wherein the entire process does not require the use of additional organic solvent, no wastewater is generated and the process is particularly suitable for the controlled production of so-called DT resins.

公开(公告)号：US20210238416A1

公开(公告)日：2021-08-05

申请号：US16961524

申请日：2018-10-26

Applicant: WACKER CHEMIE AG

Inventor： Detlev OSTENDORF ,  Steffen DOERRICH ,  Marko PRASSE

IPC: C08L83/04 ,  C08K9/06 ,  C08K7/02 ,  C08K5/544 ,  C08K5/17 ,  C08K5/14 ,  C08K5/11 ,  C08K5/101 ,  C08K3/36 ,  C08J5/10 ,  C08G77/20 ,  C08G77/18 ,  C04B26/32 ,  C04B20/00 ,  C04B24/12

Abstract: Curable organopolysiloxane compositions contain (A) organopolysiloxane resins consisting of units of the formula RaR1b(OR2)cSiO(4-a-b-c)/2   (I), with the proviso that in formula (I) the sum of a+b+c≤3, in at least one unit of the formula (I) b=1, in at least 50% of the units of the formula (I) a+b=1 and in at most 10% of the units of the formula (I) a+b=3, based in each case on all siloxane units of the formula (I) in organopolysiloxane resin (A), (B) organic compounds having at least one unit of the formula CR32═CR3—CO—Z—  d(II), (C) initiators, (D) fillers and (K) amines, wherein the radicals and indices have the definition specified in claim 1. When coarse and fine grained fillers are employed, the composition can be used to mold artificial stone.

公开(公告)号：US20200325337A1

公开(公告)日：2020-10-15

申请号：US16646845

申请日：2017-09-15

Applicant: WACKER CHEMIE AG

Inventor： Marko PRASSE ,  Detlev OSTENDORF

IPC: C08L83/06 ,  C08J5/24 ,  C04B30/02

Abstract: Addition curable composition containing specific silicone resins containing aliphatically unsaturated groups and an. organic compound containing unsaturated groups such as acrylate or methacrylate groups are suitable when used with fine and coarse fillers to produce artificial stone with both high hardness and high flexural strength.

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：US20170210856A1

公开(公告)日：2017-07-27

申请号：US15328088

申请日：2015-07-14

Applicant: Wacker Chemie AG

Inventor： Daniel SCHILDBACH ,  Detlev OSTENDORF ,  Marko PRASSE ,  Uwe SCHEIM

IPC: C08G77/08 ,  C08G77/16 ,  C08G77/18 ,  C04B26/32

CPC classification number: C08G77/08 ,  C04B26/32 ,  C04B2111/54 ,  C08G77/14 ,  C08G77/16 ,  C08G77/18 ,  C08K5/0091 ,  C08K5/098 ,  C08K5/29 ,  C08K5/31 ,  C08L83/04 ,  C04B14/02 ,  C04B14/022 ,  C04B14/042 ,  C04B14/043 ,  C04B14/047 ,  C04B14/06 ,  C04B14/08 ,  C04B14/10 ,  C04B14/28 ,  C04B14/285 ,  C04B14/30 ,  C04B14/303 ,  C04B14/32 ,  C04B14/42 ,  C04B14/46 ,  C04B22/066 ,  C04B24/04 ,  C04B24/08 ,  C04B24/12 ,  C04B24/42 ,  C04B40/0254 ,  C04B40/0259 ,  C04B40/0263 ,  C04B2103/002 ,  C04B2103/0021 ,  C04B2103/0022 ,  C04B2103/0023 ,  C04B2103/0025 ,  C04B2103/0086

Abstract: Artificial stone having excellent mechanical and weatherability properties is prepared from a highly filled crosslinkable organosilicon composition where the filler comprises at least 20 weight percent of coarse fillers, the organosilicon component contains silicon-bonded alkoxy and or hydroxyl groups, with a catalyst containing a metal compound and an amidine or guanidine.

公开(公告)号：US20180030274A1

公开(公告)日：2018-02-01

申请号：US15549613

申请日：2016-02-04

Applicant: Wacker Chemie AG

Inventor： Uwe SCHEIM ,  Marco KAUSCHKE ,  Stephan MARRACK ,  Marko PRASSE ,  Holger RAUTSCHEK

IPC: C08L83/12 ,  C09D183/12 ,  C09D7/12

Abstract: Aqueous dispersions which are storage stable and cure to tack-free elastomers upon removal of water contain water, alkoxysilyl-terminated polyethers and alkoxy-functional siloxanes, optionally catalysts, fillers, and other additives customary in dispersions of organosilicon compounds.

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：US20250019498A1

公开(公告)日：2025-01-16

申请号：US18715775

申请日：2021-12-03

Applicant: WACKER CHEMIE AG

Inventor： Marko PRASSE

IPC: C08G77/08 ,  C08G77/00

Abstract: A process for preparing branched organopolysiloxanes includes organopolysiloxanes O that have a glass transition temperature (Tg) of 5° C. to 100° C. and contain units of the general formula (I), RaSi(OR1)bO(4-a-b)/2 (I). Silanes of the general formula (II), RnSi(OR1)4-n (II), are reacted with water, catalytic amounts of an acidic catalyst K, and optionally alcohol A. No other solvent apart from alcohol A is used throughout the entire process. Alcohol A is selected from methanol, ethanol or a mixture of methanol and ethanol. The organopolysiloxanes O have average molecular weights Mw in the range of 500 to 20,000 g/mol (weight average) with a polydispersity (PD) of at most 20.

公开(公告)号：US20180194902A1

公开(公告)日：2018-07-12

申请号：US15742402

申请日：2016-08-24

Applicant: Wacker Chemie AG

Inventor： Marko PRASSE ,  Detlev OSTENDORF

IPC: C08G77/395 ,  C08K5/31 ,  C08K5/5317 ,  C08L83/04 ,  C08J3/24 ,  C08K3/26

Abstract: Synthesis of organyloxyfunctional organosilicon compounds is facilitated by a two-step process using a basic lithium, guanidine or amidine catalyst in the first step, and a phosphorus compound having a P═O linkage in a second step.