公开(公告)号：US20220325154A1

公开(公告)日：2022-10-13

申请号：US17222329

申请日：2021-04-05

Applicant: Momentive Performance Materials Inc.

Inventor： Arindam Sannigrahi ,  Sandeep Naik ,  Meenal Mehra ,  Debarshi Dasgupta ,  Tiberiu Mircea Siclovan ,  Kwanho Chang

IPC: C09J183/04 ,  C08G77/00

Abstract: A process for producing a silicone pressure sensitive adhesive is shown and described herein. The process comprises reacting a MQ silicone resin with a polydiorganosiloxane in the absence of a solvent. The MQ silicone resin is a solid, solventless MQ resin. The reaction may be conducted in the presence of a catalyst, a chain extension reagent, or a combination thereof, and the resulting pressure sensitive adhesive can be dissolved in a solvent and the solids content adjusted. The present method provides a manner to provide a cleaner adhesive material that is free of unwanted materials such as aromatic solvents and also substantially free of cyclic siloxane impurities.

公开(公告)号：US20240327678A1

公开(公告)日：2024-10-03

申请号：US18128688

申请日：2023-03-30

Applicant: MOMENTIVE PERFORMANCE MATERIALS INC.

Inventor： Meenal Mehra ,  Sandeep Naik ,  Tiberiu Mircea Siclovan ,  Arindam Sannigrahi ,  Debarshi Dasgupta ,  Praveen Mishra ,  Sukanta Dolai

IPC: C09J7/38 ,  C08G77/46

CPC classification number: C09J7/38 ,  C08G77/46 ,  C08G77/70 ,  C09J2301/302 ,  C09J2301/414 ,  C09J2483/00

Abstract: A novel hydrophylically modified silicone and a composition for forming a hydrophylically modified silicone pressure sensitive adhesive is shown and described herein. The comprises comprises (i) a MQ silicone resin, (ii) a polyorganosiloxane, and (iii) a siloxane comprising a range of hydrophilic functional groups. The mixture of (i), (ii), and (iii) is self-catalyzing and does not require an external condensation catalyst. The composition is suitable for forming a cured silicone material such as, for example, a pressure sensitive adhesive compatible with polar additives or actives used in various applications.

公开(公告)号：US11884779B2

公开(公告)日：2024-01-30

申请号：US16482739

申请日：2018-02-16

Applicant: Momentive Performance Materials Inc.

Inventor： Sukanta Dolai ,  Shreedhar Bhat ,  Meenal Mehra

IPC: C08G77/388 ,  A61K47/69 ,  A61K9/00 ,  A61K9/70 ,  A61K47/34 ,  C08G77/18 ,  G02B1/04 ,  A61K9/06 ,  C08G77/20 ,  C08G77/22 ,  C08G77/392 ,  C09D183/06 ,  C08F230/08 ,  C08G77/04 ,  A61K45/06 ,  C08G77/06

CPC classification number: C08G77/388 ,  A61K9/0051 ,  A61K9/06 ,  A61K9/7023 ,  A61K47/34 ,  A61K47/6903 ,  C08F230/08 ,  C08G77/18 ,  C08G77/20 ,  C08G77/22 ,  C08G77/392 ,  C09D183/06 ,  G02B1/043 ,  A61K45/06 ,  C08G77/045 ,  C08G77/06 ,  C08G2210/00

Abstract: A hydrophilic silicone, compositions comprising the same, and articles comprising the same are shown and described herein. The hydrophilic silicone is an ionically modified silicone compound wherein the compound comprises a zwitterionic moiety and has a net neutral charge. The hydrophilic silicone compounds may be provided as part of a composition, e.g., a composition suitable for forming a hydrogel, which may be employed to form a film material and even an article (e.g., in a contact lens).

公开(公告)号：US20240327690A1

公开(公告)日：2024-10-03

申请号：US18128662

申请日：2023-03-30

Applicant: MOMENTIVE PERFORMANCE MATERIALS INC.

Inventor： Meenal Mehra ,  Sandeep Naik ,  Tiberiu Mircea Siclovan ,  Arindam Sannigrahi ,  Debarshi Dasgupta ,  Praveen Mishra ,  Sukanta Dolai

IPC: C09J183/02

CPC classification number: C09J183/02 ,  C08G77/70 ,  C09J2483/00

Abstract: A process for forming a silicone material is shown and described herein. The process comprises reacting (i) a MQ silicone resin, (ii) a polyorganosiloxane, and (iii) a hydrophilic functional siloxane, wherein the reaction is conducted in the absence of an external catalyst. The mixture of (i), (ii), and (iii) is self-catalyzing and does not require an external condensation catalyst. The process is suitable for forming a cured silicone material such as, for example, a pressure sensitive adhesive.

公开(公告)号：US12049576B2

公开(公告)日：2024-07-30

申请号：US17222329

申请日：2021-04-05

Applicant: Momentive Performance Materials Inc.

Inventor： Arindam Sannigrahi ,  Sandeep Naik ,  Meenal Mehra ,  Debarshi Dasgupta ,  Tiberiu Mircea Siclovan ,  Kwanho Chang

IPC: C09J183/04 ,  C08G77/00 ,  C08G77/44 ,  C09J183/10

CPC classification number: C09J183/04 ,  C08G77/44 ,  C08G77/70 ,  C09J183/10 ,  C08G2170/40

Abstract: A process for producing a silicone pressure sensitive adhesive is shown and described herein. The process comprises reacting a MQ silicone resin with a polydiorganosiloxane in the absence of a solvent. The MQ silicone resin is a solid, solventless MQ resin. The reaction may be conducted in the presence of a catalyst, a chain extension reagent, or a combination thereof, and the resulting pressure sensitive adhesive can be dissolved in a solvent and the solids content adjusted. The present method provides a manner to provide a cleaner adhesive material that is free of unwanted materials such as aromatic solvents and also substantially free of cyclic siloxane impurities.

公开(公告)号：US11254789B2

公开(公告)日：2022-02-22

申请号：US16482734

申请日：2018-02-16

Applicant: Momentive Performance Materials Inc.

Inventor： Meenal Mehra ,  Raveendra Mathad ,  Shreedhar Bhat

IPC: C08G77/20 ,  C08F230/08 ,  C08G77/388 ,  A61K47/69 ,  A61K9/00 ,  A61K9/70 ,  A61K47/34 ,  C08G77/18 ,  G02B1/04 ,  A61K9/06 ,  C08G77/22 ,  C08G77/392 ,  C09D183/06 ,  C08G77/04 ,  A61K45/06 ,  C08G77/06

Abstract: A hydrophilic silicone, compositions comprising the same, and articles comprising the same are shown and described herein. The hydrophilic silicone is an ionically modified silicone compound wherein the compound has a net neutral charge. The hydrophilic silicone compounds may be provided as part of a composition, e.g., a composition suitable for forming a hydrogel, which may be employed to form a film material and even an article (e.g., in a contact lens).