公开(公告)号：US20230263708A1

公开(公告)日：2023-08-24

申请号：US17997352

申请日：2020-04-30

Applicant: SUMITOMO OSAKA CEMENT CO., LTD.

Inventor： Syunsuke SUMA ,  Masahiro NOBE

IPC: A61K8/02 ,  A61Q17/04

CPC classification number: A61K8/0245 ,  A61Q17/04 ,  A61K2800/412 ,  A61K2800/612 ,  A61K2800/651

Abstract: Surface-modified zinc oxide particles having a silane coupling agent having an alkoxy group on surfaces thereof, in which the surface-modified zinc oxide particles have 5.0 × 10-2 g2/s or more and 1.0 × 102 g2/s or less of a penetration rate coefficient A of cyclopentasiloxane with respect to the surface-modified zinc oxide particles, which is indicated by A in the following formula (1). W2 = A·t (1) (in the formula, W is a penetration weight (unit: g), and t is a time (unit: s).)

公开(公告)号：US20230218488A1

公开(公告)日：2023-07-13

申请号：US17997348

申请日：2020-04-30

Applicant: SUMITOMO OSAKA CEMENT CO., LTD.

Inventor： Syunsuke SUMA ,  Masahiro NOBE

IPC: A61K8/02 ,  A61Q17/04

CPC classification number: A61K8/0245 ,  A61Q17/04 ,  A61K2800/612 ,  A61K2800/412 ,  A61K2800/651

Abstract: Surface-modified zinc oxide particles which have a silane coupling agent having an alkoxy group on surfaces thereof, in which d50 when measured with a laser diffraction/scattering type particle size distribution-measuring instrument by the following measurement method is 4 μm or less. (Measurement method) 10 g of the surface-modified zinc oxide particles, 88 g of cyclopentasiloxane, and 2 g of polyglyceryl-3 polydimethylsiloxyethyl dimethicone are mixed to obtain a liquid mixture, a dispersion treatment is performed on the obtained liquid mixture at 9,500 rpm for 5 minutes using a homogenizer to obtain a liquid dispersion, the liquid dispersion is diluted with cyclopentasiloxane so that a content of the surface-modified zinc oxide particles in the obtained liquid dispersion is 0.01% by mass to produce a measurement solution, and d50 is measured with the laser diffraction/scattering type particle size distribution-measuring instrument using the obtained measurement solution.

公开(公告)号：US20220169862A1

公开(公告)日：2022-06-02

申请号：US17393245

申请日：2021-08-03

Applicant: SUMITOMO OSAKA CEMENT CO., LTD.

Inventor： Tadashi NEYA ,  Masahiro NOBE ,  Syunsuke SUMA

IPC: C09C1/04 ,  C09C3/12 ,  C09D17/00 ,  C09D7/62 ,  A61K8/02 ,  A61K8/58 ,  A61K8/04 ,  A61Q17/04

Abstract: A zinc oxide powder in which a BET specific surface area (X) of the powder is 1.5 m2/g or more and 65 m2/g or less, a value obtained by a formula: an apparent specific volume (mL/g) measured by a loose packing method of the zinc oxide powder/an apparent specific volume (mL/g) measured by a tapping method of the zinc oxide powder is 1.5 or more and 2.5 or less, and Formula (1) and Formula (2) shown below are satisfied. A1/E2=aX+0.06  (1) (M2−M1)/E2≥0.02  (2)

公开(公告)号：US20220169524A1

公开(公告)日：2022-06-02

申请号：US17393228

申请日：2021-08-03

Applicant: SUMITOMO OSAKA CEMENT CO., LTD.

Inventor： Tadashi NEYA ,  Masahiro NOBE ,  Syunsuke SUMA

IPC: C01G9/02

Abstract: A zinc oxide powder in which a BET specific surface area of the powder is 8 m2/g or more and 65 m2/g or less, an apparent specific volume measured by a loose packing method of the powder is 1.0 mL/g or more and 7.5 mL/g or less, and a value indicated by (the apparent specific volume measured by the loose packing method/an apparent specific volume measured by a tapping method), which is obtained by dividing the apparent specific volume (mL/g) measured by the loose packing method by the apparent specific volume (mL/g) measured by the tapping method of the powder, is 1.50 or more and 2.50 or less.