公开(公告)号：US20200181408A1

公开(公告)日：2020-06-11

申请号：US16078370

申请日：2017-02-21

Applicant: Dow Silicones Corporation

Inventor： Patrick BEYER ,  Yusheng CHEN ,  Shaohui WANG ,  Hans Peter WOLF

IPC: C08L83/04 ,  C08G77/20 ,  C08G77/12 ,  B01J23/42 ,  C08K5/05 ,  C08K3/36 ,  C08K9/04

Abstract: A liquid curable silicone elastomer composition is disclosed. The composition comprises: an organopolysiloxane (A) comprising: an organopolysiloxane (A1) containing at least 2 alkenyl groups bonded to silicon atom per molecule and having a total alkenyl content of from 0.01 to 1.5 mmol/g, and an organopolysiloxane (A2) containing at least 2 alkenyl groups bonded to silicon atom per molecule and having a total alkenyl content of from 5.0 to 15.0 mmol/g; an organopolysiloxane (B) comprising an organopolysiloxane (B1) containing at least 2 silicon-bonded hydrogen atoms per molecule provided by siloxy units of the type (R2HSiO1/2)x where R is independently selected from hydrogen, an aliphatic a hydrocarbyl, an aromatic hydrocarbyl, or an organyl group and x≥2; a platinum based catalyst (C); an inhibitor (D) selected from the group consisting of acetylenic alcohols and their derivatives; and a silica filler (E).

公开(公告)号：US20190040204A1

公开(公告)日：2019-02-07

申请号：US16078267

申请日：2017-02-21

Applicant: Dow Silicones Corporation

Inventor： Patrick BEYER ,  Ivonne HANKAMMER ,  Hans Peter WOLF

IPC: C08G77/12 ,  C08G77/20 ,  C08G77/08 ,  C08K3/36 ,  C08K5/05 ,  B01J23/42 ,  B29C64/124

CPC classification number: C08G77/12 ,  B01J23/42 ,  B29C64/124 ,  B33Y70/00 ,  C08G77/08 ,  C08G77/20 ,  C08K3/36 ,  C08K5/05 ,  C08K5/56 ,  C08K9/06 ,  C08L83/00 ,  C08L83/04

Abstract: A liquid curable silicone elastomer composition is disclosed. The liquid curable silicone elastomer composition comprises an organopolysiloxane (A) containing at least two silicon-bonded alkenyl groups per molecule, an organopolysiloxane (B) containing at least two silicon-bonded hydrogen atoms per molecule, a platinum based catalyst (C), an inhibitor (D), and a silica filler (E). The organopolysiloxane (B) is a branched polymer, contains M siloxy units, and the at least two silicon-bonded hydrogen atoms are present on the M siloxy units. The inhibitor (D) is selected from the group consisting of acetylenic alcohols and their derivatives. The inhibitor (D) is present in the liquid curable silicone elastomer composition in an amount to provide a molar ratio—of the inhibitor (D) to platinum in the catalyst (C)—of from 150 to 900 (150:1 to 900:1).

公开(公告)号：US20240368402A1

公开(公告)日：2024-11-07

申请号：US18772884

申请日：2024-07-15

Applicant: DOW SILICONES CORPORATION ,  DOW TORAY CO., LTD.

Inventor： Patrick BEYER ,  Michael BACKER ,  Tomoko TASAKI

IPC: C08L83/04 ,  B29C64/106 ,  B33Y10/00 ,  B33Y70/00 ,  C08G77/08 ,  C08G77/12 ,  C08G77/20 ,  C09D183/04

Abstract: The present disclosure relates to hydrosilylation curable silicone rubber compositions having polyorganosiloxane cross-linkers containing at least two or at least three terminal silicon bonded hydrogen groups and one or more hydrosilylation cure inhibitor compounds selected from multiacrylates having at least three acrylate groups per molecule. Cured products resulting from the cure of such compositions and which may include elastomeric products are also disclosed.

公开(公告)号：US20230392012A1

公开(公告)日：2023-12-07

申请号：US18038826

申请日：2021-11-23

Applicant: DOW SILICONES CORPORATION ,  DOW TORAY CO., LTD.

Inventor： Patrick BEYER ,  Michael BACKER ,  Tomoko TASAKI

IPC: C08L83/04 ,  C08G77/12 ,  C08G77/20 ,  C08G77/08 ,  C08F222/10 ,  B29C64/124

CPC classification number: C08L83/04 ,  C08G77/12 ,  C08G77/20 ,  C08G77/08 ,  C08F222/103 ,  C08F222/104 ,  B29C64/124 ,  C08L2312/08 ,  B33Y10/00

Abstract: The present disclosure relates to hydrosilylation curable silicone rubber compositions having polyorganosiloxane cross-linkers containing at least two or at least three terminal silicon bonded hydrogen groups and one or more hydrosilylation cure inhibitor compounds selected from multiacrylates having at least three acrylate groups per molecule. Cured products resulting from the cure of such compositions and which may include elastomeric products are also disclosed. A hydrosilylation curable silicone composition comprises: (A) one or more polyorganosiloxanes containing at least two unsaturated groups per molecule, which unsaturated groups are selected from alkenyl and alkynyl groups and having a viscosity in a range of 1,000 to 200,000 mPa·s at 25° C.; (B) a polyorganosiloxane containing at least two terminal silicon bonded hydrogen groups; (C) at least one hydrosilylation catalyst; and (D) a hydrosilylation cure inhibitor comprising a multiacrylate compound having at least three acrylate groups per molecule.

公开(公告)号：US20230323121A1

公开(公告)日：2023-10-12

申请号：US18012182

申请日：2021-06-16

Applicant: DOW GLOBAL TECHNOLOGIES LLC ,  DOW SILICONES CORPORATION

Inventor： Patrick BEYER ,  Michael ROSENZWEIG ,  Michael BACKER ,  Cesare BENEDETTI ,  Matthew JELETIC

IPC: C08L83/04 ,  C08J7/04 ,  C08J7/18

CPC classification number: C08L83/04 ,  C08J7/0427 ,  C08J7/18 ,  C08J2369/00 ,  C08J2383/05 ,  C08L2207/04

Abstract: A curable silicone rubber composition of the type referred to in industry as “self-adhesive” or as having “selective adhesion” (hereafter referred to as “curable self-adhesive silicone rubber compositions”). The curable self-adhesive silicone rubber compositions comprise: (A) one or more organopolysiloxanes containing at least 2 alkenyl groups and/or alkynyl groups per molecule and having a viscosity in a range of 1000 mPa·s to 200,000 mPa·s at 25° C.; (B) an organopolysiloxane containing at least 2 or 3 silicon-bonded hydrogen atoms per molecule; (C) at least one hydrosilylation catalyst; (D) at least one reinforcing and optionally one or more non-reinforcing fillers; (E) an adhesion promoter; and (F) an oligomer which has been found to surprisingly provide heat-humidity stabilization.

公开(公告)号：US20220204770A1

公开(公告)日：2022-06-30

申请号：US17605598

申请日：2020-04-28

Applicant: DOW SILICONES CORPORATION

Inventor： Roman VANECEK ,  Patrick BEYER

IPC: C08L83/06 ,  C09D183/06 ,  B32B25/20 ,  B32B25/04 ,  B32B7/12

Abstract: Provided is a primer composition and the preparation and use thereof. The primer composition comprises a silicone polyether, a reinforcing filler, one or more polydiorganosiloxane polymer(s), and a carrier. The primer composition is particularly designed for use with silicone elastomers, especially for addition (hydrosilylation) curing silicone elastomers. Also provided is a process for improving the adhesion of silicone elastomeric compositions to pre-cured silicone elastomer material substrates via the primer composition.

公开(公告)号：US20240262970A1

公开(公告)日：2024-08-08

申请号：US18636223

申请日：2024-04-15

Applicant: DOW SILICONES CORPORATION

Inventor： Roman VANECEK ,  Patrick BEYER

IPC: C08J7/043 ,  C07F7/08 ,  C08F130/08 ,  C08K3/36 ,  C09D5/00 ,  C09D143/04 ,  C09J5/00

CPC classification number: C08J7/043 ,  C07F7/087 ,  C08F130/08 ,  C08K3/36 ,  C09D5/002 ,  C09D143/04 ,  C09J5/00 ,  C08J2383/04 ,  C08K2201/019 ,  C09J2483/003

Abstract: There is described a primer composition comprising a silicone polyether, a reinforcing filler, one or more polydiorganosiloxane polymer(s) and a carrier and the preparation and use thereof. The primer composition is particularly designed for use with silicone elastomers especially for addition (hydrosilylation) curing silicone elastomers, the preparation thereof, and to a process for improving the adhesion of silicone elastomeric compositions to pre-cured silicone elastomer material substrates. A method for improving the adhesion of silicone elastomer to a pre-cured silicone elastomeric substrate is provided. The method comprises: applying a primer composition to a silicone elastomer substrate; optionally, air-drying (or baking) the primer composition to form a uniform primer film covering the substrate; applying a hydrosilylation curable silicone rubber composition to the substrate covered with the primer to obtain a composite; and curing the composite in order to obtain a silicone elastomer adhesively bonded to a silicone elastomer substrate.

公开(公告)号：US20190055420A1

公开(公告)日：2019-02-21

申请号：US16078305

申请日：2017-02-21

Applicant: Dow Silicones Corporation

Inventor： Patrick BEYER ,  Chad DINNINGER ,  Roger GIBAS ,  John KENNAN ,  Hans Peter WOLF

IPC: C09D11/102 ,  C09D11/037 ,  B33Y10/00 ,  B33Y70/00 ,  B29C64/106

Abstract: A selective adhesion liquid silicone rubber composition is disclosed. The liquid silicone rubber composition comprises an organopolysiloxane (A) containing at least two silicon-bonded alkenyl groups per molecule, an organopolysiloxane (B) containing at least two silicon-bonded hydrogen atoms per molecule, a platinum based catalyst (C), an inhibitor (D), a silica filler (E), and an adhesion promoter (F). The organopolysiloxane (B) comprises organopolysiloxane (B1) and organopolysiloxane (B2), wherein organopolysiloxane (B1) contains siloxy units of the type (R2HSiO1/2)x where x≥2. Organopolysiloxane (B2) contains siloxy units of the type (RHSiO2/2)z where z≥2. Each R is independently selected from a hydrogen atom, or an aliphatic hydrocarbyl, aromatic hydrocarbyl, or organyl group. The inhibitor (D) is selected from the group consisting of acetylenic alcohols and their derivatives.