Title:
ULTRAVIOLET-CURABLE COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2022/255313
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide an ultraviolet-curable composition excellent in terms of printability, ultraviolet-light reactivity in the presence of oxygen, and tackiness at ordinary temperature and high temperatures. This ultraviolet-curable composition comprises: a hardening component comprising (meth)acrylate monomers and a crosslinking component; and an ultraviolet hardener. The (meth)acrylate monomers include a monomer, a homopolymer of which has a glass transition temperature of -70°C to -30°C, in an amount of 50-85 wt% with respect to the hardening component, which is taken as 100 wt%. A hardened object obtained by applying the composition in a thickness of 150 μm to a base and irradiating the coating film, without sealing the upper surface thereof, with ultraviolet light having wavelengths of 315-480 nm in the atmosphere under the conditions of an irradiance of 90 mW/cm2 and a dose of 1,350 mJ/cm2 has a gel content of 0.4-78%, a glass transition temperature of -35°C to 10°C, a reactant conversion of 83% or higher, and a proportion of the reactant conversion in the atmosphere-side surface to that in the base-side surface of 93% or higher.
Inventors:
KAWADA SHINJI (JP)
TODA TOMOKI (JP)
KAGE SHUUJI (JP)
OKUHARA CHIHARU (JP)
NEMOTO KAITO (JP)
TODA TOMOKI (JP)
KAGE SHUUJI (JP)
OKUHARA CHIHARU (JP)
NEMOTO KAITO (JP)
Application Number:
PCT/JP2022/021976
Publication Date:
December 08, 2022
Filing Date:
May 30, 2022
Export Citation:
Assignee:
SEKISUI CHEMICAL CO LTD (JP)
International Classes:
C08F2/48; B32B27/00; B32B27/30; C08F2/44; C08F20/26; C08J7/043; C09J4/02; C09J7/38
Domestic Patent References:
| WO2019066020A1 | 2019-04-04 |
Foreign References:
| JP2014129538A | 2014-07-10 | |||
| JP2020041069A | 2020-03-19 |
Attorney, Agent or Firm:
WISEPLUS IP FIRM (JP)
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