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1. (WO2017038802) MULTI-LAYER COATING

Pub. No.:    WO/2017/038802    International Application No.:    PCT/JP2016/075288
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Wed Aug 31 01:59:59 CEST 2016
IPC: B32B 13/12
C09D 7/12
C09D 143/04
C09D 163/00
Applicants: NIPPON PAINT CO., LTD.
日本ペイント株式会社
Inventors: HOSHINO, Masaya
星野 匡弥
KANASHIRO, Atsushi
金城 厚志
Title: MULTI-LAYER COATING
Abstract:
To provide a multi-layer coating for covering the surface of a concrete substrate, the multi-layer coating having high transparency and application thereof not imparting a wet coloring onto the surface of the concrete. The transparent multi-layer coating includes: a lower coating layer derived from a lower coating composition, which contains at least one selected from the group consisting of acrylic resins, urethane resins, urea resins, and modified forms of these resins; a middle coating layer derived from a middle coating composition; and an upper coating layer derived from an upper coating composition. The transparent multi-layer coating is formed on the surface of a concrete substrate so that the difference between the L value of the concrete substrate surface before forming of the multi-layer coating and the L value of the concrete substrate surface after forming of the multi-layer coating is ‒2.0 to 4.0.