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Patent Searching and Data


Title:
EPOXY RESIN COMPOSITION AND CURED PRODUCT
Document Type and Number:
WIPO Patent Application WO/2021/060226
Kind Code:
A1
Abstract:
The present invention discloses a polyurethane-modified epoxy resin composition which is able to achieve a good balance between high toughness and high elasticity. This epoxy resin composition is characterized by containing, as essential components: (A) a polyurethane-modified epoxy resin that has a polycarbonate structure in each molecule, while having a urethane modification rate of from 20% by weight to 60% by weight; (B) a polyurethane-unmodified epoxy resin that is in a liquid state at 30°C; (C) a bisphenol type solid epoxy resin that has a glass transition temperature or melting point of 50°C or higher; and (D) an amine-based curing agent that is composed of dicyandiamide or a derivative thereof. This epoxy resin composition is also characterized in that from 20.0% by weight to 50.0% by weight of the component (A), from 0.1% by weight to 50.0% by weight of the component (B) and from 0.1% by weight to 50.0% by weight of the component (C) are contained relative to the total weight of the components (A) to (D).

Inventors:
HATTORI KOICHI (JP)
Application Number:
PCT/JP2020/035659
Publication Date:
April 01, 2021
Filing Date:
September 23, 2020
Export Citation:
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Assignee:
NIPPON STEEL CHEMICAL & MAT CO LTD (JP)
International Classes:
C08G59/28; C08G18/58; C08L63/00
Domestic Patent References:
WO2006132093A12006-12-14
WO2019188399A12019-10-03
WO2019188400A12019-10-03
Foreign References:
JP2016011409A2016-01-21
JP2006104277A2006-04-20
JPH06206980A1994-07-26
JPH0820706A1996-01-23
CN109535376A2019-03-29
Attorney, Agent or Firm:
SASAKI Kazuya et al. (JP)
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