Title:
FILM COATING AGENT
Document Type and Number:
WIPO Patent Application WO/2021/065324
Kind Code:
A1
Abstract:
Provided is a film coating agent that exhibits excellent thermal yellowing resistance and adhesion to a substrate. This film coating agent contains an aqueous polyurethane dispersion in which a polyurethane resin is dispersed in water, the polyurethane resin being obtained by reacting a compound having one or more amino groups with an isocyanate group-terminated pre-polymer obtained by reacting a polyisocyanate and a polyol. The film coating agent is characterized in that: the polyol contains a polyol having one or more acidic groups; and in the aqueous polyurethane dispersion, the ratio of number of moles of amino groups/number of moles of isocyanate groups is one or more, which is the molar ratio of the number of moles of isocyanate groups in the isocyanate group-terminated pre-polymer and the number of moles of amino groups in the compound having one or more amino groups.
More Like This:
Inventors:
NISHIMURA AYAO (JP)
WATANABE TOSHIYA (JP)
YOSHIOKA TAKUYA (JP)
SEO NAOKI (JP)
WATANABE TOSHIYA (JP)
YOSHIOKA TAKUYA (JP)
SEO NAOKI (JP)
Application Number:
PCT/JP2020/033423
Publication Date:
April 08, 2021
Filing Date:
September 03, 2020
Export Citation:
Assignee:
DKS CO LTD (JP)
International Classes:
C09D5/02; C08G18/00; C08G18/10; C08G18/28; C08G18/32; C09D175/04
Domestic Patent References:
| WO2015194671A1 | 2015-12-23 | |||
| WO2018173637A1 | 2018-09-27 |
Foreign References:
| JPS62109813A | 1987-05-21 | |||
| JPH0710948A | 1995-01-13 | |||
| JPH08259884A | 1996-10-08 | |||
| JPH06234912A | 1994-08-23 | |||
| JP2019038952A | 2019-03-14 | |||
| JP2017137441A | 2017-08-10 | |||
| JPH09255751A | 1997-09-30 |
Download PDF: