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US 12,534,431 B2Granted
Method of producing thiourethane resin raw material and application thereof, method of producing polythiol composition and application thereof, and polythiol composition
AssigneeMitsui Chemicals, Inc.
InventorsMasakazu Murakami, Shotaro Nakano, Shinnosuke Nakai
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Abstract
A method of producing a thiourethane resin raw material, the method including comprising the step of generating the thiourethane resin raw material by reacting a thiourethane resin and an active hydrogen compound with each other.
Claims6
A method of producing a polythiol composition, the method comprising:
- reacting a thiourethane resin and an amine compound with each other to generate a polythiol composition, wherein the reacting comprises obtaining a reaction mixture comprising the polythiol composition;
- and
- separating the polythiol composition from the reaction mixture comprising the polythiol composition,
- wherein the amine compound is an amine compound of 300 or less in molecular weight, which comprises at least one of an amino group or a monoalkylamino group, and has a total number of amino groups and monoalkylamino groups of 1 or 2.
1 more element
Dependencies are inferred from the claim text.