-
公开(公告)号：US20210317257A1
公开(公告)日：2021-10-14
申请号：US17217728
申请日：2021-03-30
Applicant: HOYA LENS THAILAND LTD.
Inventor： Masahito IGARI , Yuko ARAI , Takumi NAGASAWA
Abstract: The disclosure provides a method for producing a polymerizable composition for optical materials by which a polymerizable composition for thiourethane-based optical materials with suppressed coloration can be prepared stably with good reproducibility even though a polyene compound and an aromatic polyisocyanate are used, and the like. A method for producing a polymerizable composition for optical materials, including: a step of providing an aromatic polyisocyanate, a polyene compound having two or more ethylenically unsaturated double bonds, and a polythiol; a step of mixing the polyene compound and the polythiol to obtain a mixture; and a step of introducing the aromatic polyisocyanate into the mixture to mix at least three components: the aromatic polyisocyanate, the polyene compound, and the polythiol.
-
公开(公告)号：US20210317255A1
公开(公告)日：2021-10-14
申请号：US17217708
申请日：2021-03-30
Applicant: HOYA LENS THAILAND LTD.
Inventor： Masahito IGARI , Yuko ARAI , Takumi NAGASAWA
Abstract: The disclosure provides a polymerizable composition for optical materials with which a thiourethane-based optical material with suppressed coloration can be prepared stably with good reproducibility even though a polyene compound and an aromatic polyisocyanate are used, a method for producing the same, and the like. A method for producing a polymerizable composition for optical materials, the polymerizable composition comprising an aromatic polyisocyanate, a polyene compound having two or more ethylenically unsaturated double bonds and having a halogen concentration of 1 ppm or more and less than 150 ppm, and a polythiol.
-
公开(公告)号：US20210301063A1
公开(公告)日：2021-09-30
申请号：US17217721
申请日：2021-03-30
Applicant: HOYA LENS THAILAND LTD.
Inventor： Yuko ARAI , Takumi NAGASAWA , Masahito IGARI
Abstract: The disclosure provides a polymerizable composition for optical materials that can achieve a cured product with a high refractive index and a small yellowness index ΔYI even though an aromatic polyisocyanate is used, a transparent resin and a method for producing the same using the polymerizable composition, a lens base material and a method for producing the same using the polymerizable composition, and the like. A polymerizable composition for optical materials, at least including an aromatic polyisocyanate, a polyene compound having two or more ethylenically unsaturated double bonds, and 30 to 80% by mass of a polythiol having three or more mercapto groups; wherein the polymerizable composition has a mercapto group/(isocyanate group+ethylenically unsaturated double bond) equivalent ratio of 1.10 to 1.70.
-
Patent Agency Ranking
公开(公告)号：US20220112327A1
公开(公告)日：2022-04-14
申请号：US17561025
申请日：2021-12-23
Applicant: HOYA LENS THAILAND LTD.
Inventor： Masahito IGARI , Takumi NAGASAWA , Teruo YAMASHITA , Tsuyoshi WATANABE
Abstract: In the method for producing a spectacle lens, the spectacle lens is a cured product obtained by curing a polymerizable composition containing 5-(isocyanatomethyl)bicyclo[2.2.1]hept-2-ene and one or more polythiol compounds, the method includes preparing the polymerizable composition by a preparation process including a first mixing step of mixing 5-(isocyanatomethyl)bicyclo[2.2.1]hept-2-ene and a polythiol compound with each other in the presence of a first catalyst that catalyzes a thiol-ene reaction, and a second mixing step of mixing a second catalyst that catalyzes a thiourethanization reaction with a mixture obtained in the first mixing step; and subjecting the polymerizable composition to a curing treatment.
-
公开(公告)号：US20210301062A1
公开(公告)日：2021-09-30
申请号：US17217719
申请日：2021-03-30
Applicant: HOYA LENS THAILAND LTD.
Inventor： Yuko ARAI , Masahito IGARI , Takumi NAGASAWA
Abstract: The disclosure provides a novel method for producing a polymerizable composition for optical materials, in which the occurrence of gelation is suppressed even though an organophosphorus compound is used during the preparation of a polymerizable composition for optical materials of a thiourethane-based resin having a high refractive index and suppressed coloration, and the like. A method for producing a polymerizable composition for optical materials, including: a step of providing an organophosphorus compound, a polyisocyanate, a first polythiol, and a second polythiol; and a step of mixing the polyisocyanate and the first and second polythiols in the presence of the organophosphorus compound to obtain a polymerizable composition for optical materials, wherein, in the mixing step, the polyisocyanate and the first polythiol are mixed, and then the second polythiol is further added and mixed.
-
公开(公告)号：US20220120936A1
公开(公告)日：2022-04-21
申请号：US17560369
申请日：2021-12-23
Applicant: HOYA LENS THAILAND LTD.
Inventor： Masahito IGARI , Takumi NAGASAWA , Teruo YAMASHITA , Tsuyoshi WATANABE
Abstract: The polymerizable composition for an optical material contains an aromatic iso(thio)cyanate compound, a non-aromatic iso(thio)cyanate compound having an unsaturated aliphatic ring, and a polythiol compound.
-
公开(公告)号：US20210301061A1
公开(公告)日：2021-09-30
申请号：US17217686
申请日：2021-03-30
Applicant: HOYA LENS THAILAND LTD.
Inventor： Takumi NAGASAWA , Masahito IGARI , Yuko ARAI
Abstract: The disclosure provides a polymerizable composition for optical materials that can achieve a cured product with a high refractive index and a small yellowness index ΔYI even though an aromatic polyisocyanate is used, a transparent resin and a method for producing the same using the polymerizable composition, a lens base material and a method for producing the same using the polymerizable composition, and the like. A polymerizable composition for optical materials, at least including an aromatic polyisocyanate and 30 to 80% by mass of a polythiol having three or more mercapto groups, wherein the polymerizable composition has a —SH/—NCO equivalent ratio of 1.10 to 1.70.
-
公开(公告)号：US20210301060A1
公开(公告)日：2021-09-30
申请号：US17217732
申请日：2021-03-30
Applicant: HOYA LENS THAILAND LTD.
Inventor： Yuko ARAI , Takumi NAGASAWA , Masahito IGARI
Abstract: The disclosure provides a novel method for producing a polymerizable composition for optical materials, in which the occurrence of gelation is suppressed even though an organophosphorus compound is used during the preparation of a polymerizable composition for optical materials of a thiourethane-based resin having a high refractive index and suppressed coloration, and the like. A method for producing a polymerizable composition for optical materials, the method including: a step of providing an organophosphorus compound, a polyisocyanate, a first polythiol, and a second polythiol; and a step of mixing the polyisocyanate and the first and second polythiols in the presence of the organophosphorus compound to obtain a polymerizable composition for optical materials, wherein, in the mixing step, the first polythiol and the second polythiol are mixed in advance to prepare a polythiol mixture, and then the polythiol mixture is mixed with the polyisocyanate.
-
-
-
-
-
-
-
Search Results
8
records
(took 0.016 seconds)
