Invention Grant
- Patent Title: Silicone resin-coated silicone elastomer particles, and applications thereof including organic resin additives
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Application No.: US17418352Application Date: 2019-12-20
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Publication No.: US12060464B2Publication Date: 2024-08-13
- Inventor: Mari Wakita , Hiroko Taniguchi , Takeshi Yoshizawa , Yasue Kanzaki
- Applicant: DOW TORAY CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: DOW TORAY CO., LTD.
- Current Assignee: DOW TORAY CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: WARNER NORCROSS + JUDD LLP
- Priority: JP 18244388 2018.12.27
- International Application: PCT/JP2019/050182 2019.12.20
- International Announcement: WO2020/137913A 2020.07.02
- Date entered country: 2021-09-28
- Main IPC: C08J3/12
- IPC: C08J3/12 ; C08G77/08 ; C08G77/12 ; C08G77/18 ; C08G77/20 ; C08K9/06 ; C09D7/40 ; C09D7/65

Abstract:
Provided is a silicone resin coated silicone elastomer particle which can be easily produced on an industrial scale, has superior dispersibility and oil absorptivity in a curable organic resin such as an epoxy resin, and has superior workability due to low secondary aggregation compared to conventional silicone elastomer particles. Also provided are applications containing the particles such as organic resin additives, organic resins, coating compositions or coating agent compositions, and cosmetic compositions. The silicone resin coated silicone elastomer particles have part or all of their surface coated with a silicone resin made up of two types of siloxane units. The siloxane units are selected from D units represented by R2SiO2/2, T units represented by RSiO3/2, and Q units represented by SiO4/2. The particles also have a structure in which at least two silicon atoms in the particles are cross-linked by a silalkylene group with 2 to 20 carbon atoms.
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