Invention Grant
- Patent Title: Polysiloxazane compound, method for producing the same, and composition containing the same and cured product thereof
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Application No.: US16749819Application Date: 2020-01-22
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Publication No.: US11339252B2Publication Date: 2022-05-24
- Inventor: Masato Kawakami , Shotaro Aoki , Ayumu Kiyomori
- Applicant: Shin-Etsu Chemical Co., Ltd.
- Applicant Address: JP Tokyo
- Assignee: Shin-Etsu Chemical Co., Ltd.
- Current Assignee: Shin-Etsu Chemical Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Birch, Stewart, Kolasch & Birch, LLP.
- Priority: JPJP2019-012667 20190129
- Main IPC: C08G77/54
- IPC: C08G77/54 ; C08G77/62 ; C08K3/011 ; C08G77/04 ; C08G77/14 ; C08G77/26 ; C08K3/08

Abstract:
A polysiloxazane compound including a repeating unit of the following general formula (1), and having a number average molecular weight of 500 to 100,000 as measured by gel permeation chromatography versus polystyrene standards, wherein R1 and R2 each independently represent a substituted or unsubstituted C1-C50 monovalent hydrocarbon group optionally containing a hetero atom, Xs each independently represent a methyl group, an oxygen atom, NH—SiX2, or (NH)(3-r)/2—SiR1R2r (R1 and R2 have the same meaning as provided above), or Xs are joined to one another to represent an oxygen atom, n is an integer of 0 to 8, when the number of NH—SiX2 is denoted by p, p satisfies 0≤p/(2n+4)≤0.5, r is an integer of 0, 1, or 2, and a and b are numbers satisfying 0
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