公开(公告)号：US20220195124A1

公开(公告)日：2022-06-23

申请号：US17132234

申请日：2020-12-23

Applicant: Momentive Performance Materials Inc.

Inventor： Subrata Mandal ,  Tetsuo Fujimoto ,  Vinodh Rajendra ,  Joseph Zampella ,  Ramasubramanian Narayanan ,  Clarissa Miller

IPC: C08G77/455 ,  C08G77/12 ,  C08G77/20 ,  C08G77/08 ,  C08K5/3417 ,  C08K3/22 ,  C08L83/08 ,  C08G77/00

Abstract: A curable silicone adhesive composition comprising a heat stable siloxane-imide copolymer is shown and described herein. The composition includes an alkenyl silicone, a silicone hydride based cross linker, hydrosilylation catalyst and additives that is curable at relatively low temperatures and shows good heat stability.

公开(公告)号：US20220186086A1

公开(公告)日：2022-06-16

申请号：US17441717

申请日：2019-05-21

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

Inventor： Fuming Huang ,  Hidefumi Tanaka ,  Kazuhiro Nishijima ,  Shenglan Zhang ,  Zhihua Liu

IPC: C09J7/40 ,  C08G77/20 ,  C08G77/12 ,  C08G77/08 ,  C09D5/00 ,  C09D183/04 ,  C09D7/63 ,  C09J7/38 ,  C09J5/00

Abstract: Provided is a curable polyorganosiloxane release coating composition comprising: A) a branched aliphatically unsaturated polyorganosiloxane, B) a crosslinker having at least 3 silicon bonded hydrogen atoms per molecule, C) a hydrosilylation reaction catalyst, D) a hydrosilylation reaction inhibitor, and E) an aryl-functional polydiorganosiloxane having a content of aliphatically unsaturated groups. Also provided are a release liner (100) with this coating (101) and the preparation method thereof.

公开(公告)号：US20220177652A1

公开(公告)日：2022-06-09

申请号：US17457944

申请日：2021-12-07

Applicant: Evonik Operations GmbH

Inventor： Berend-Jan DE GANS ,  Philippe Favresse ,  Wilfried Knott ,  Horst Dudzik ,  Markus Hallack ,  Florian Düllmann

IPC: C08G77/18 ,  C08G77/08 ,  C08G77/10 ,  C08K5/5419 ,  C08L83/06 ,  C09D5/16

Abstract: Curable condensation compounds are useful, obtainable by the reaction of end-equilibrated acetoxy group-bearing siloxanes with at least one alkoxy-functional polysiloxane, in the presence of a catalyst.

公开(公告)号：US11344862B1

公开(公告)日：2022-05-31

申请号：US17206485

申请日：2021-03-19

Applicant: University of South Florida

Inventor： Abdul John Malik ,  Emre Seyyal

IPC: B01J20/10 ,  B01J20/04 ,  C01B33/10 ,  B01J20/32 ,  C01B33/152 ,  C01D1/04 ,  B01J20/281 ,  B01J20/28 ,  C08G77/24 ,  C08G79/00 ,  C08G77/08

Abstract: A method of coating at least one silica capillary using a novel dual ligand sol-gel sorbent and method of manufacture of such sorbent is provided herein. The dual ligand sol-gel sorbent provides superior enrichment effects through simultaneous exploitation of superhydrophobicity of one of the ligands and the ability of the other ligand to undergo π-π interaction with hydrophobic aromatic analytes. Sorbent performance is enhanced both in terms of analyte enrichment and sorbent stability, such as pH stability and solvent stability.

公开(公告)号：US20220162448A1

公开(公告)日：2022-05-26

申请号：US17531385

申请日：2021-11-19

Applicant: tesa SE

Inventor： Tobias Winkler ,  Christof-Gottfried Hoelger ,  Paraskevi Christogianni ,  Thomas Dowden ,  Priti Ariscrisna ,  Elliot Allen ,  Mark Buckingham ,  Reya Shamsah ,  Anna Blades ,  Alice Dowden ,  Khai Duong Quang Nguyen ,  Julien Gautrot

IPC: C08L83/04 ,  C08G77/20 ,  C08G77/08 ,  C08K3/36 ,  C08K3/26 ,  C08K7/10 ,  C08K7/20 ,  C08K9/06 ,  C08K5/5419

Abstract: The present invention provides a tin-free, room temperature curable silicone elastomer composition, wherein the uncured composition is a putty. The silicone elastomer composition comprises a) an end-capped base polymer, wherein the base polymer comprises a polysiloxane or mixture of polysiloxanes, and wherein the end-capped base polymer comprises terminal di-(C1-4)alkoxy silyl groups; b) at least one amorphous filler; c) 15.1 to 60 parts by weight of at least one spherical filler for each 100 parts by weight of base polymer; and d) a curing catalyst consisting of one or more selected from the group consisting of organic titanates and organic zirconates. The terminal dialkoxy silyl groups of the base polymer can be dimethoxy silyl groups. The at least one amorphous filler can be selected from the group consisting of fumed silica, fumed alumina, carbon black, precipitated silica, precipitated calcium carbonate, surface-treated calcium carbonate and mixtures thereof.

公开(公告)号：US20220145020A1

公开(公告)日：2022-05-12

申请号：US17605015

申请日：2020-08-03

Applicant: Dow Silicones Corporation

Inventor： Junying LIU ,  David M. ALTERGOTT ,  Steven SWIER

IPC: C08J3/24 ,  C08L83/04 ,  C08K5/37 ,  C08K5/5419 ,  C08G77/08 ,  C08G77/18 ,  C08G77/20 ,  C08G77/00

Abstract: A composition contains: (a) a silicon-free mercapto compound comprising 2 or more mercapto groups; (b) a linear polyorganosiloxane containing one or more than one terminally unsaturated alkenyl group, 40 mole-percent or more phenyl groups relative to moles of silicon atoms and at least one alkoxysilyl group per molecule; (c) a resinous polyorganosiloxane containing one or more than one terminally unsaturated alkenyl group and 20 mole-percent or more phenyl groups relative to moles of silicon atoms; (d) a photoinitiator; and (e) a moisture cure catalyst; and wherein the molar ratio of mercapto groups to terminally unsaturated alkenyl groups in the composition is in a range of 0.3 to 2.0.

公开(公告)号：US20220106506A1

公开(公告)日：2022-04-07

申请号：US17425100

申请日：2019-11-26

Applicant: SHIN-ETSU CHEMICAL CO., LTD.

Inventor： Takeharu TOYOSHIMA ,  Atsushi YAGINUMA ,  Toshiyuki OZAI

IPC: C09J183/04 ,  C08G77/08 ,  C08G77/12 ,  C08G77/20

Abstract: An ultraviolet ray-curable silicone adhesive agent composition comprising (A) a polysiloxane represented by formula (1): (R1SiO3/2)a1(R13SiO1/2)b1(X1O1/2)c1 (wherein R1 represents a monovalent hydrocarbon group wherein a methyl group accounts for 20 mol % or more and an alkenyl group accounts for 0.1 to 50 mol %; X1 represents a hydrogen atom or the like; a1 represents 0.1 to 1; b1 represents 0 to 0.75; and c1 represents 0 to 0.1; and the requirement represented by the formula: a1+b1+c1=1 is satisfied), (B) a polysiloxane represented by formula (2): (R23SiO1/2)a2(R22SiO)b2 (wherein R2 represents a monovalent hydrocarbon group wherein a methyl group accounts for 20 mol % or more and an alkenyl group accounts for 0.01 to 25 mol %; a2 represents 0.001 to 0.67; b2 represents 0.33 to 0.999; and the requirement represented by the formula: a2+b2=1 is satisfied), (C) a hydrogen polysiloxane represented by formula (3): R3dHeSiO[(4-d-e)/2] (wherein R3 represents a monovalent hydrocarbon group; and d and e represent numerical values satisfying the requirements represented by the formulae: 0.7≤d≤2.5, 0.01≤e≤1.0 and 0.8≤d+e≤2.7) and (D) a platinum-group catalyst capable of being activated with light having a wavelength of 200 to 500 nm. The ultraviolet ray-curable silicone adhesive agent composition can provide a cured article having excellent adhesion force to an object of interest even when being cured under room temperature.

公开(公告)号：US20220064450A1

公开(公告)日：2022-03-03

申请号：US17422828

申请日：2020-01-10

Applicant: DOW SILICONES CORPORATION

Inventor： Gyuyoung LEE

IPC: C08L83/04 ,  C08G77/12 ,  C08G77/20 ,  C08G77/08 ,  C08K5/521

Abstract: Provided is an antistatic silicone rubber composition. The composition comprises at least one potassium salt selected from the group consisting of a potassium alkyl phosphate, potassium bis(trialkylsily)amide, potassium dialkyl amide, potassium sulfate, potassium phenoxide, and potassium permanganate, in an amount of from about 0.1 to about 15 mass % of the composition. In general, the composition may comprise: (A) an organopolysiloxane having at least two silicon atom-bonded alkenyl groups per molecule; (B) an organopolysiloxane having at least two silicon atom-bonded hydrogen atoms per molecule; (C) a hydrosilylation catalyst; and (D) the at least one potassium salt as described above. The composition generally exhibits good curability, and cures to form a silicone rubber exhibiting excellent antistatic properties.

公开(公告)号：US20220064449A1

公开(公告)日：2022-03-03

申请号：US17420230

申请日：2020-01-07

Applicant: SHIN-ETSU CHEMICAL CO., LTD.

Inventor： Tatsuei HARA ,  Nobu KATO

IPC: C08L83/04 ,  C08G77/12 ,  C08G77/20 ,  C08G77/52 ,  C08G77/08 ,  C08K3/36 ,  C08K5/3475 ,  C08K5/05 ,  C09J183/04

Abstract: The present invention provides an addition-curable self-adhesive silicone rubber composition and a silicone rubber cured product.
An addition-curable self-adhesive silicone rubber composition which contains:
a predetermined amount of (A) an alkenyl group-containing organopolysiloxane which has at least two alkenyl groups that are bonded to silicon atoms in each molecule;
a predetermined amount of (B-1) an organosilicon compound having 1-100 silicon atoms, which has at least one phenylene skeleton in each molecule, while having at least one hydrogen atom that is bonded to a silicon atom;
a predetermined amount of (B-2) an organohydrogen polysiloxane which contains at least two hydrogen atoms that are bonded to silicon atoms in each molecule, and which does not contain an aromatic group;
a predetermined amount of (C) a platinum-based catalyst;
a predetermined amount of (D) a benzotriazole derivative; and
a predetermined amount of (E) an acetylene alcohol compound or a compound which is obtained by modifying an alcoholic hydroxyl group of the acetylene alcohol compound with a silane or a siloxane.

公开(公告)号：US11261329B2

公开(公告)日：2022-03-01

申请号：US16489459

申请日：2017-12-15

Applicant: TESA SE

Inventor： Priti Ariscrisna ,  Tom Dowden ,  Jude Pullen ,  Mark Buckingham ,  Åsa Jerlhagen ,  Reya Shamsah ,  Paraskevi Christogianni ,  Julien Gautrot ,  Steve Westall ,  Khai Duong Quang Nguyen ,  Winnie Mac

IPC: C08L83/04 ,  C08K7/22 ,  C08L83/06 ,  C08G77/16 ,  C08G77/18 ,  C08G77/08 ,  C08K5/1515 ,  C08K5/56 ,  C08K7/02

Abstract: The present invention provides a tin-free, room temperature curable silicone elastomer composition, wherein the uncured composition is a putty.