Title:
TWO-PACK TYPE URETHANE MOLDING MATERIAL FOR OPTICAL LENSES, AND OPTICAL LENS FORMED OF POLYURETHANE RESIN
Document Type and Number:
WIPO Patent Application WO/2022/259669
Kind Code:
A1
Abstract:
The present invention provides a two-pack type urethane molding material for optical lenses, the two-pack type urethane molding material being composed of a base material that contains an isocyanate-terminated prepolymer, which is an intermediate product of a polyurethane formation reaction between an alicyclic diisocyanate and a polyhydroxy compound, and a curing agent that contains an aromatic diamine, which is dimethylthiotoluenediamine (DMTDA), diethyltoluenediamine (DETDA) or a mixture thereof.
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Inventors:
TAMURA HIROO (JP)
WADA KENZO (JP)
WADA KENZO (JP)
Application Number:
PCT/JP2022/011279
Publication Date:
December 15, 2022
Filing Date:
March 14, 2022
Export Citation:
Assignee:
TALEX CO LTD (JP)
International Classes:
G02B1/04; B29C39/24; C08G18/10; C08G18/32; C08G18/75; G02B3/00; B29K75/00; B29L11/00
Domestic Patent References:
| WO2020031502A1 | 2020-02-13 | |||
| WO2017126138A1 | 2017-07-27 | |||
| WO2014152819A1 | 2014-09-25 |
Foreign References:
| JP2009520057A | 2009-05-21 | |||
| US20050282017A1 | 2005-12-22 | |||
| JP2005058918A | 2005-03-10 |
Attorney, Agent or Firm:
KAMADA Naoya et al. (JP)
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