Title:
機械的強度に優れるポリマー微粒子含有ポリウレタン系硬化性組成物
Document Type and Number:
Japanese Patent JP6936734
Kind Code:
B2
Abstract:
The object of the present invention is to provide a curable composition for forming a cured product having high tensile strength and high elongation. A polyurethane curable composition of the present invention contains a polyol (A) and a polyisocyanate (B) as an essential component, wherein the composition contains polymer fine particles (C) having a core-shell structure including at least two layers of a core layer and a shell layer, the polymer fine particles (C) are contained in an amount of 1 to 150 parts by mass per 100 parts by mass of a total amount of the polyol (A) and the polyisocyanate (B), the core layer has a glass transition temperature (Tg) of more than 0 °C as calculated by the following numerical formula (1), a cured product formed by the curable composition has an elongation of more than 47 % at a maximum tensile stress, 1 / Tg = £ M i / Tg i wherein M i represents a weight fraction of a non-crosslinking monomer i constituting the core layer of the polymer fine particles (C), Tg i represents a glass transition temperature (K) of a homopolymer polymerized with the non-crosslinking monomer i, and i represents an integer of 1 or more.
More Like This:
Inventors:
Toshihiko Okamoto
Application Number:
JP2017555144A
Publication Date:
September 22, 2021
Filing Date:
December 08, 2016
Export Citation:
Assignee:
Kaneka Corporation
International Classes:
C08L75/04; C08G18/08; C09J11/08; C09J151/06; C09J175/04; C09J175/08
Domestic Patent References:
| JP2015514149A | ||||
| JP2012506919A | ||||
| JP10195173A |
Foreign References:
| WO2014196607A1 | ||||
| WO2015156295A1 | ||||
| US20150203705 |
Attorney, Agent or Firm:
Asfi International Patent Office
Kyuichi Ueki
Hisahiko Ueki
Tadashi Sugakawa
Hiroaki Ito
Kyuichi Ueki
Hisahiko Ueki
Tadashi Sugakawa
Hiroaki Ito