Title:
ULTRAVIOLET CURABLE RESIN COMPOSITION, CURED PRODUCT AND OPTICAL LENS
Document Type and Number:
WIPO Patent Application WO/2021/049443
Kind Code:
A1
Abstract:
The present invention relates to an ultraviolet curable resin composition which contains a multifunctional epoxy resin, an oxetane compound and a curing retardant, wherein: if irradiated with ultraviolet light having a wavelength of 365 nm and an illuminance of 7 mW/cm2 for 5 seconds, the time t1 from the start of the irradiation of ultraviolet light to the point at which the storage elastic modulus of the ultraviolet curable resin composition is 100 times the storage elastic modulus thereof before the irradiation of ultraviolet light is more than 2 minutes; and if irradiated with ultraviolet light having a wavelength of 365 nm and an illuminance of 7 mW/cm2 for 20 seconds, the time t2 from the start of the irradiation of ultraviolet light to the point at which the storage elastic modulus of the ultraviolet curable resin composition is 100 times the storage elastic modulus thereof before the irradiation of ultraviolet light is less than 2 minutes.
Inventors:
YOSHIDA JUN (JP)
Application Number:
PCT/JP2020/033711
Publication Date:
March 18, 2021
Filing Date:
September 07, 2020
Export Citation:
Assignee:
AGC INC (JP)
International Classes:
C08G59/68; C08G65/18; C08K5/17; C08L63/00; G02B1/04; G02B3/00
Domestic Patent References:
| WO2018174177A1 | 2018-09-27 |
Foreign References:
| JP2005194379A | 2005-07-21 | |||
| JP2010195932A | 2010-09-09 | |||
| JP2008189821A | 2008-08-21 | |||
| JP2012136571A | 2012-07-19 | |||
| JP2019143006A | 2019-08-29 | |||
| JP2013043983A | 2013-03-04 | |||
| JP2013091676A | 2013-05-16 |
Attorney, Agent or Firm:
EIKOH PATENT FIRM, P.C. (JP)
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