公开(公告)号：US20180170799A1

公开(公告)日：2018-06-21

申请号：US15898313

申请日：2018-02-16

Applicant: Dyrup A/S

Inventor： Soren Hillebrandt Poulsen ,  Sverrir Grimur Gunnarsson ,  Per Moller

IPC: C03C11/00 ,  C09D5/16 ,  C09D7/40 ,  C09C3/06 ,  C09C1/30 ,  C09D7/62 ,  C03C12/02 ,  C03C17/25 ,  C08K9/02 ,  B01J21/08 ,  B01J37/02 ,  B01J35/08 ,  C08K7/28 ,  B01J35/00

CPC classification number: C03C11/002 ,  B01J21/08 ,  B01J35/004 ,  B01J35/08 ,  B01J37/0209 ,  B01J37/0215 ,  B01J37/0219 ,  B01J37/0221 ,  C01P2002/72 ,  C01P2004/03 ,  C01P2004/32 ,  C01P2004/34 ,  C03C12/02 ,  C03C17/256 ,  C03C2217/212 ,  C03C2217/71 ,  C03C2218/111 ,  C03C2218/113 ,  C08K7/28 ,  C08K9/02 ,  C09C1/30 ,  C09C3/063 ,  C09D5/16 ,  C09D5/1606 ,  C09D5/1687 ,  C09D7/62 ,  C09D7/68 ,  C09D7/69

Abstract: The present invention relates to compositions with self-cleaning properties. More particularly, the invention concerns coatings or paints comprising particles coated with a catalytically active composition. In particular, a self-cleaning coating composition (paint) is provided, comprising micro-sized particles coated with a functional layer, wherein the micro-sized particles are hollow or solid beads, or any combination/ratio of hollow and solid beads, wherein the beads comprise one or more material(s) selected from ceramic material(s); polymeric material(s); cermet material(s); metallic material(s); pigmented material(s); light-absorbing and/or light reflecting material(s); including any combination thereof, wherein said layer is covalently bound to said particles, wherein the photocatalytic layer comprises TiO2 in the crystal form of anatase; and wherein the coating composition (paint) comprises less than 0.1 anatase particles derived/released from the micro-sized beads, determined as weight/weight of released anatase/total amount of anatase. The invention provides paint essentially without presence of unbound anatase crystals which is highly undesired, as it is believed that their presence has a negative influence on essential components of the paint, such as binder, pigment and/or additives and furthermore, anatase may cause eye, skin, and respiratory tract irritation.