Invention Grant
- Patent Title: Foam control composition
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Application No.: US17756770Application Date: 2021-01-19
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Publication No.: US11597802B2Publication Date: 2023-03-07
- Inventor: Sung-Hsuen Chao , Christophe Deglas , Marc Thibaut
- Applicant: Dow Silicones Corporation
- Applicant Address: US MI Midland
- Assignee: Dow Silicones Corporation
- Current Assignee: Dow Silicones Corporation
- Current Assignee Address: US MI Midland
- Agent Edward Black
- International Application: PCT/US2021/013886 WO 20210119
- International Announcement: WO2021/167728 WO 20210826
- Main IPC: B01D19/04
- IPC: B01D19/04 ; C08G77/38 ; C08G77/20 ; C08K3/36 ; C08G77/12 ; C08G77/00

Abstract:
Foam control compositions along with formulations thereof and their use in various applications, including a method for making a foam control composition comprising a cross-linked polyorganosiloxane material including a dispersed silica filler, including the steps of: A) preparing a hydrosilylation reaction mixture by combining the following components: (i) silica filler, (ii) a polyorganosiloxane having at least two reactive substituents capable of addition reaction with component (iii) via hydrosilylation, (iii) a polyorganosiloxane having at least three reactive substituents capable of addition reaction with component (ii) via hydrosilylation, and (iv) a hydrosilylation catalyst; B) conducting a hydrosilylation reaction of components (ii) and (iii) until the reaction mixture at least partially gels to form a hydrosilylation reaction product; C) shearing the hydrosilylation reaction product of step B); and D) combining the hydrosilylation reaction product of step C) with a (v) silicone resin and an (vi) condensation catalyst to form a condensation reaction mixture and conducting a condensation reaction between the (v) silicone resin and the hydrosilylation reaction product of step C) to form a condensation reaction product.
Public/Granted literature
- US20230037257A1 FOAM CONTROL COMPOSITION Public/Granted day:2023-02-02
Information query