WATER-BASED COATING COMPOSITION BASED ON RIGID URETHANE AND APPLICATION METHOD THEREFOR

Title:

WATER-BASED COATING COMPOSITION BASED ON RIGID URETHANE AND APPLICATION METHOD THEREFOR

Document Type and Number:

WIPO Patent Application WO/2017/022409

Kind Code:

A1

Abstract:

[Problem] Conventional water-based coating materials based on a rigid urethane are not applicable with rollers because of the high viscosity thereof and the coarse cement-based aggregate, and are still required to be applied with trowels to base concrete floor surfaces. The application requires operation time and labor. Furthermore, water-based coating materials based on a rigid urethane show high hardening shrinkage force to give coating films which warp or lift up. There has hence been a disadvantage that the surface to be coated must be grooved. [Solution] A water-based coating composition based on a rigid urethane is configured, the composition comprising a water-compatible polyol resin, diphenylmethane diisocyanate (MDI) as a hardener, a cement-based fine aggregate, a diluent, and a hardening accelerator. Also provided is an application method which comprises using a sand aggregate roller to apply the water-based coating composition based on a rigid urethane. Due to this, easy application of certain quality is rendered possible, and this coating composition and this application method help prevent a coating film from warping or lifting up even when the base floor surface is not grooved.

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Inventors:

HOSOYA YOSHINORI (JP)
MOCHIZUKI RYUTA (JP)
TANIMURA HIROKI (JP)

Application Number:

PCT/JP2016/070246

Publication Date:

February 09, 2017

Filing Date:

July 08, 2016

Export Citation:

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Assignee:

HIGASHI NIPPON TORYO CO LTD (JP)

International Classes:

C09D175/04; B05D1/28; B05D7/24; C09D7/12; E04F15/12

Foreign References:

JP2011500940A	2011-01-06
JP2009155502A	2009-07-16
JP2008031721A	2008-02-14
JP2011073944A	2011-04-14
JP2011099207A	2011-05-19
JP2005047719A	2005-02-24
JP2007254179A	2007-10-04

Attorney, Agent or Firm:

SUDA Motoya (JP)

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