公开(公告)号：US20190322567A1

公开(公告)日：2019-10-24

申请号：US16256072

申请日：2019-01-24

Applicant: SHOFU INC.

Inventor： Keita KAWATA ,  Masanori GOTO ,  Kenji KONO

IPC: C03C3/087 ,  C03C3/093 ,  A61C8/00

Abstract: To provide a a glass composition which can be used for a dental porcelain or a dental ceramics coloring material, and has low temperature meltability, acid resistance and preservation stability under the humid environment which are required for a dental porcelain or a dental ceramics coloring material, and a dental porcelain and dental ceramics coloring material which contain the glass composition of the present disclosure. To provide a low melting glass composition with softening point (Ts) less than 600° C. comprising as a component; SiO2: 55.0 to 75.0 wt. %, B2O3: 6.1 to 12.0 wt. %, Al2O3: 2.0 to 8.0 wt. %, ZnO: 2.0 to 8.5 wt. % and two or more kinds of alkali metal oxide: 10.5 to 20.0 wt. %.

公开(公告)号：US20200330331A1

公开(公告)日：2020-10-22

申请号：US16749005

申请日：2020-01-22

Applicant: SHOFU INC.

Inventor： Keita KAWATA ,  Kenji KONO

IPC: A61K6/836 ,  A61K6/853 ,  A61K6/65

Abstract: To provide a dental porcelain paste which can maintain maintaining the paste state and have excellent application property for a long period of time and hardly causes carbonization or bubbles due to the influence of an organic component or a polymer component during firing. The present invention provides a dental porcelain paste for preparing a dental prosthesis device, comprising: 50.0 to 80.0 wt. % of a glass powder (a) having a maximum particle diameter of 100 μm or less and an average particle diameter of 1 to 20 μm, 0.5 to 10.0 wt. % of a hydrophobized fine particle silica (b) having an average primary particle diameter of 1 to 50 nm, and 10.0 to 49.5 wt. % of an organic solvent (c) having a boiling point it is within (bp) of 100 to 300° C.