- 专利标题： RETROREFLECTIVE POWDER COATING COMPOSITION
-
申请号： EP23170899.1申请日： 2023-05-01
-
公开(公告)号： EP4458912A1公开(公告)日： 2024-11-06
- 发明人: Knoote, Jacques Arthur , Mijnen, Paul Willem , Kerres, Harald Paul , Schlijper, Ramon , Knoote, Menno
- 申请人： Ink Invent IP B.V.
- 申请人地址： NL 3433 PT Nieuwegein Twentehaven 5
- 代理机构： van Someren, Petronella F. H. M.
- 主分类号： C09D5/00
- IPC分类号： C09D5/00 ; C08K3/40 ; C09D7/61 ; C09D7/40 ; C09D17/00 ; C08K7/20 ; C09D5/03
摘要：
The present invention concerns a retroreflective powder coating composition consisting of:
• 10 - 95.9 wt.% of a film-forming binder material;
• 4 - 85 wt.% of spherical glass beads having a median particle diameter D50 between 1 and 50 µm and a refractive index between 1.9 and 2.8;
• 0.1 - 15 wt.% of pigment flakes having a median diameter between 1 and 75 µm; and
• 0 - 15 wt.% of one or more further ingredients,
wherein the weight percentages are based on the total weight of the composition,
wherein the composition comprises particles comprising the film-forming binder material and having a median particle diameter D50 between 2 and 200 µm, and
wherein the median diameter of said pigment flakes is greater than 35% of the median particle diameter D50 of said spherical glass beads.
The invention further concerns a powder coating process for providing a substrate with retroreflective properties and a substrate coated with a retroreflective layer obtainable by said process.
• 10 - 95.9 wt.% of a film-forming binder material;
• 4 - 85 wt.% of spherical glass beads having a median particle diameter D50 between 1 and 50 µm and a refractive index between 1.9 and 2.8;
• 0.1 - 15 wt.% of pigment flakes having a median diameter between 1 and 75 µm; and
• 0 - 15 wt.% of one or more further ingredients,
wherein the weight percentages are based on the total weight of the composition,
wherein the composition comprises particles comprising the film-forming binder material and having a median particle diameter D50 between 2 and 200 µm, and
wherein the median diameter of said pigment flakes is greater than 35% of the median particle diameter D50 of said spherical glass beads.
The invention further concerns a powder coating process for providing a substrate with retroreflective properties and a substrate coated with a retroreflective layer obtainable by said process.
信息查询
IPC分类:
