公开(公告)号：US20240058256A1

公开(公告)日：2024-02-22

申请号：US18268223

申请日：2021-12-14

Applicant: DOW TORAY CO., LTD.

Inventor： Mari WAKITA ,  Hiroko TANIGUCHI ,  Yasue KANZAKI ,  Tsunehito SUGIURA

IPC: A61K8/891 ,  A61K8/02 ,  A61Q17/04 ,  A61K8/06

CPC classification number: A61K8/891 ,  A61K8/025 ,  A61Q17/04 ,  A61K8/064 ,  A61K2800/412

Abstract: Provided are silicone elastomer particles that have higher oil absorbency than conventional products and are less prone to aggregation, making the particles superior in handling workability as a cosmetic raw material and imparting a superior tactile sensation and feel during use to a cosmetic product. Specifically, silicone elastomer particles, having a structure in which at least two silicon atoms in a silicone elastomer particle are crosslinked by a divalent organic group having a partial structure formed by radical polymerization of vinyl acetate, as expressed by —{CH2—CH(COOCH3)}t— (where t is 1 or more), as well as a use thereof, are provided. In particular, the silicone elastomer particles have a crosslinked structure that is active with respect to biodegradability. Therefore, primary particles thereof are expected to have a property of disintegrating with the generation of non-crosslinked siloxane molecules due to a decomposition reaction of microorganisms and the like in the natural world.

公开(公告)号：US20210198432A1

公开(公告)日：2021-07-01

申请号：US17203341

申请日：2021-03-16

Applicant: DOW TORAY CO., LTD.

Inventor： Seiji HORI ,  Yasue KANZAKI ,  Hiroko TANIGUCHI ,  Mari WAKITA

IPC: C08G77/50 ,  A61K8/891 ,  A61Q1/12 ,  A61Q19/00 ,  A61Q1/02 ,  A61Q17/04 ,  C08G77/08 ,  C08L83/14

Abstract: Silicone particles having excellent dispersibility are provided via the method herein. A cosmetic material having excellent feeling of use, and a highly functional paint and an electronic material are also provided. The silicone particles include a siloxane as a component. A content of a hydrogen atom bonded to a silicon atom per unit mass is 300 ppm or less, or optionally is 20 ppm or less. In addition, the silicon atom in the siloxane as a component for the silicone particles is crosslinked with another silicon atom via an alkylene group having a carbon number of 4 to 20.

公开(公告)号：US20220073684A1

公开(公告)日：2022-03-10

申请号：US17418352

申请日：2019-12-20

Applicant: DOW TORAY CO., LTD.

Inventor： Mari WAKITA ,  Hiroko TANIGUCHI ,  Takeshi YOSHIZAWA ,  Yasue KANZAKI

IPC: C08J3/12 ,  C08K9/06 ,  C08G77/20 ,  C08G77/18 ,  C08G77/12 ,  C08G77/08 ,  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.

公开(公告)号：US20210113452A1

公开(公告)日：2021-04-22

申请号：US17041699

申请日：2019-03-27

Applicant: DOW TORAY CO., LTD.

Inventor： Mari WAKITA ,  Hiroko TANIGUCHI ,  Yasue KANZAKI ,  Seiji HORI

IPC: A61K8/891 ,  A61K8/02 ,  A61K8/92 ,  A61Q19/00 ,  A61K8/06 ,  A61K8/894 ,  A61K8/58 ,  A61K8/29 ,  A61K8/26 ,  A61K8/19 ,  A61Q1/02 ,  A61K8/25 ,  A61K8/34 ,  A61K8/81 ,  A61K8/368 ,  A61K8/49 ,  A61K8/41 ,  A61Q1/12 ,  A61K8/31 ,  A61K8/37 ,  A61K8/27 ,  A61K8/86 ,  A61Q17/04 ,  A61Q19/08 ,  A61K8/365 ,  A61Q1/08 ,  A61K8/60 ,  A61Q1/10 ,  A61K8/23 ,  A61K8/73 ,  A61Q1/04 ,  A61Q5/06

Abstract: Provided is an oil-including elastomer particle wherein at least two silicon atoms within the silicone elastomer particle are cross-linked through a silalkylene group with a carbon number of between 4 and 20, and having a structure that includes, in the silicone elastomer particle, an oil that is liquid at 40° C. In general, the mixture of oil and the cross-linking silicone composition can be cured in the form of emulsion particles. Also provided herein are uses of the oil-including elastomer particle and emulsion particles formed therefrom.

公开(公告)号：US20250059329A1

公开(公告)日：2025-02-20

申请号：US18723426

申请日：2022-12-23

Applicant: DOW TORAY CO., LTD.

Inventor： Liyi TAN ,  Tsunehito SUGIURA ,  Mari WAKITA ,  Hiroko TANIGUCHI ,  Yasue KANZAKI

IPC: C08G77/20 ,  A61K8/895 ,  A61Q1/12 ,  C08F18/08 ,  C08F290/14 ,  C08G64/04 ,  C08G77/08

Abstract: Provided are a vinyl-modified organopolysiloxane useful as a raw material for radical polymerization reactions, especially for biodegradable polymers or copolymers, as well as a method for producing the same. A radical polymerizable polymer or radical polymerizable copolymer in which the vinyl-modified organopolysiloxane is at least a portion of the starting raw material, as well as uses thereof and a method of production, are also provided. A vinyl-modified organopolysiloxane having two or more vinyl-modified groups (RAc) expressed by —R1—C(═O)—O—CH═CHR2 here R1 is a divalent organic group having 4 to 20 carbon atoms, R2 is a hydrogen atom or a methyl group) bonded to a silicon atom in the molecule and having a polyorganosiloxane structure; a radical polymerizable polymer or radical polymerizable copolymer, especially silicone elastomer particles made therefrom; and use thereof.

公开(公告)号：US20250057754A1

公开(公告)日：2025-02-20

申请号：US18723425

申请日：2022-12-23

Applicant: DOW TORAY CO., LTD.

Inventor： Tsunehito SUGIURA ,  Mari WAKITA ,  Hiroko TANIGUCHI ,  Liyi TAN ,  Yasue KANZAKI ,  Kei NAGAYAMA ,  Hiro SETOGUCHI

IPC: A61K8/893 ,  A61K8/02 ,  A61K8/892 ,  A61Q19/00 ,  C07C69/675 ,  C08G77/16 ,  C08G77/18

Abstract: Provided are silicone elastomer particles having a crosslinked structure which is active with respect to biodegradability, and can provide texture and feel during use that is equal to or higher than conventional silicone elastomer particles when blended in a cosmetic composition or the like, a reactive group-containing polycaprolactone compound having a specific structure and useful as a raw material for synthesis reactions, and a method for producing the same. A polycaprolactone compound containing a reactive group having two or more modified polycaprolactone structures has the structural formula (1) as described herein, where in the formula, n is a number in the range 1 to 5 and Ra is a specific (meth)acryl terminal group or alkenyl terminal group, specifically, a compound selected from the aforementioned (meth)acryl-modified polycaprolactone compounds and alkenyl-modified polycaprolactone compounds.

公开(公告)号：US20200332124A1

公开(公告)日：2020-10-22

申请号：US16955221

申请日：2018-12-19

Applicant: DOW TORAY CO., LTD.

Inventor： Mari WAKITA ,  Hiroko TANIGUCHI ,  Takeshi YOSHIZAWA

IPC: C08L83/06 ,  C08G77/08 ,  C08G77/12 ,  C08G77/38 ,  C09D183/14 ,  C09D183/06 ,  A61K8/891 ,  A61Q1/12 ,  C08J7/04

Abstract: Provided is a silicone resin-coated silicone elastomer particle that is superior in dispersibility into organic resins, in stress relaxation performance, and the like, and that has low dust scattering when mixing and thus is superior in ease of handling. Also provided is an organic resin additive, an organic resin, a coating composition, or a coating agent composition, and applications such as in cosmetic compositions, including the particle. The silicone resin-coated silicone elastomer particle has a structure wherein at least two silicon atoms in a silicone elastomer particle are cross-linked through a silalkylene group with a carbon number between 4 and 20 where some or all of the surface thereof is coated with a silicone resin structured from siloxane units expressed by SiO4/2.