公开(公告)号：US20210207349A1

公开(公告)日：2021-07-08

申请号：US17212660

申请日：2021-03-25

Applicant: TOTO LTD.

Inventor： Saori Ukigai ,  Ryojiro Hijikata ,  Ryo Koga

IPC: E03C1/10 ,  E03C1/04

Abstract: Provided is a faucet fixture to which antifouling functionality is imparted without causing localized corrosion. The present invention is a faucet fixture comprising a metal base material and a plating layer partially formed on the surface of the metal base material. The metal base material contains at least one metal element species selected from the group consisting of copper, zinc, and tin. The plating layer contains at least one metal element species selected from the group consisting of chromium and nickel. An organic layer is further provided on the plating layer, with a passive layer present on the surface of the plating layer being interposed therebetween. The organic layer is bonded to the passive layer via the bonding of a metal element (M), which constitutes the passive layer, and a phosphorus atom (P) in at least one type of group (X) selected from the group consisting of phosphonate groups, phosphate groups, and phosphinate groups, with an oxygen atom (O) interposed therebetween (M-O—P bond). Group X is bonded to a group R (wherein R is a hydrocarbon group, or a group comprising an atom other than carbon at one or two locations within a hydrocarbon group). The phosphorus atom concentration in the portion of the surface of the metal base material on which the plating layer is not formed is lower than the phosphorus atom concentration in the organic layer provided on the plating layer.

公开(公告)号：US20210277522A1

公开(公告)日：2021-09-09

申请号：US17212537

申请日：2021-03-25

Applicant: TOTO LTD.

Inventor： Saori Ukigai ,  Ryojiro Hijikata ,  Ryo Koga

IPC: C23C22/78 ,  C23C22/73 ,  C23C22/03 ,  E03C1/04 ,  C23C22/83 ,  C23C28/00 ,  C25D3/04 ,  C25D3/12

Abstract: To provide a sanitary facility member having excellent ease of contamination removal and excellent persistence of ease of contamination removal. A sanitary facility member including: a base material, at least the surface of which includes a metal element; a metal oxide layer formed on the surface of the base material; and an organic layer provided on the metal oxide layer; wherein the metal element is at least one element selected from the group consisting of Cr, Zr, and Ti, the metal oxide layer includes at least the metal element and an oxygen element, and the organic layer is bonded to the metal oxide layer by bonding (M-O—P bonding) of the metal element (M) and a phosphorus atom (P) of at least one group (X) selected from a phosphonic acid group, a phosphoric acid group, and a phosphinic acid group via an oxygen atom (O), the group X being bonded to a group R (where R is a hydrocarbon or a group having an atom other than carbon in 1 or 2 locations in a hydrocarbon group).

公开(公告)号：US12188132B2

公开(公告)日：2025-01-07

申请号：US17212537

申请日：2021-03-25

Applicant: TOTO LTD.

Inventor： Saori Ukigai ,  Ryojiro Hijikata ,  Ryo Koga

IPC: C23C22/78 ,  C23C22/03 ,  C23C22/73 ,  C23C22/83 ,  C23C28/00 ,  C25D3/04 ,  C25D3/12 ,  E03C1/04

Abstract: To provide a sanitary facility member having excellent ease of contamination removal and excellent persistence of ease of contamination removal. A sanitary facility member including: a base material, at least the surface of which includes a metal element; a metal oxide layer formed on the surface of the base material; and an organic layer provided on the metal oxide layer; wherein the metal element is at least one element selected from the group consisting of Cr, Zr, and Ti, the metal oxide layer includes at least the metal element and an oxygen element, and the organic layer is bonded to the metal oxide layer by bonding (M-O—P bonding) of the metal element (M) and a phosphorus atom (P) of at least one group (X) selected from a phosphonic acid group, a phosphoric acid group, and a phosphinic acid group via an oxygen atom (O), the group X being bonded to a group R (where R is a hydrocarbon or a group having an atom other than carbon in 1 or 2 locations in a hydrocarbon group).

公开(公告)号：US11795671B2

公开(公告)日：2023-10-24

申请号：US17212660

申请日：2021-03-25

Applicant: TOTO LTD.

Inventor： Saori Ukigai ,  Ryojiro Hijikata ,  Ryo Koga

IPC: E01C1/00 ,  C23C22/03 ,  C23C28/00 ,  E03C1/10 ,  E03C1/04

CPC classification number: E03C1/10 ,  E03C1/0404 ,  C23C22/03

Abstract: Provided is a faucet fixture to which antifouling functionality is imparted without causing localized corrosion. The present invention is a faucet fixture comprising a metal base material and a plating layer partially formed on the surface of the metal base material. The metal base material contains at least one metal element species selected from the group consisting of copper, zinc, and tin. The plating layer contains at least one metal element species selected from the group consisting of chromium and nickel. An organic layer is further provided on the plating layer, with a passive layer present on the surface of the plating layer being interposed therebetween. The organic layer is bonded to the passive layer via the bonding of a metal element (M), which constitutes the passive layer, and a phosphorus atom (P) in at least one type of group (X) selected from the group consisting of phosphonate groups, phosphate groups, and phosphinate groups, with an oxygen atom (O) interposed therebetween (M-O—P bond). Group X is bonded to a group R (wherein R is a hydrocarbon group, or a group comprising an atom other than carbon at one or two locations within a hydrocarbon group). The phosphorus atom concentration in the portion of the surface of the metal base material on which the plating layer is not formed is lower than the phosphorus atom concentration in the organic layer provided on the plating layer.

公开(公告)号：US20250075332A1

公开(公告)日：2025-03-06

申请号：US18954881

申请日：2024-11-21

Applicant: TOTO LTD.

Inventor： Saori Ukigai ,  Ryojiro Hijikata ,  Ryo Koga

IPC: C23C22/78 ,  C23C22/03 ,  C23C22/73 ,  C23C22/83 ,  C23C28/00 ,  C25D3/04 ,  C25D3/12 ,  E03C1/04

Abstract: To provide a sanitary facility member having excellent ease of contamination removal and excellent persistence of ease of contamination removal. A sanitary facility member including: a base material, at least the surface of which includes a metal element; a metal oxide layer formed on the surface of the base material; and an organic layer provided on the metal oxide layer; wherein the metal element is at least one element selected from the group consisting of Cr, Zr, and Ti, the metal oxide layer includes at least the metal element and an oxygen element, and the organic layer is bonded to the metal oxide layer by bonding (M-O—P bonding) of the metal element (M) and a phosphorus atom (P) of at least one group (X) selected from a phosphonic acid group, a phosphoric acid group, and a phosphinic acid group via an oxygen atom (O), the group X being bonded to a group R (where R is a hydrocarbon or a group having an atom other than carbon in 1 or 2 locations in a hydrocarbon group).