Xylylene diisocyanate composition, polymerizable composition, resin, molded article, optical element, and lens
US-2024263008-A1 · Aug 8, 2024 · US
Method for producing polythiol compound, method for producing curable composition, and method for producing cured product
US10766996B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10766996-B2 |
| Application number | US-201816015670-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 22, 2018 |
| Priority date | Aug 5, 2016 |
| Publication date | Sep 8, 2020 |
| Grant date | Sep 8, 2020 |
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- Title
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Abstract
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Provided is a method for producing a polythiol compound, including reacting 2-mercaptoethanol with an epihalohydrin, wherein the reaction is carried out in the presence of a halide selected from the group consisting of a 2,3-dihalogeno-1-propanol and an allyl halide, and an amount of the halide in the reaction is more than 0.50% by mass and 10.00% by mass or less with respect to the total amount of the halide and the epihalohydrin. Also provided are a method for producing a curable composition, including producing a polythiol compound by the abovementioned production method, and a method for producing a cured product, including producing a curable composition by the abovementioned production method.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for producing a polythiol compound, comprising reacting 2-mercaptoethanol with an epihalohydrin, wherein the reaction is carried out in the presence of a halide selected from the group consisting of a 2,3-dihalogeno-1-propanol and an allyl halide, and an amount of the halide in the reaction is 0.60% by mass or more and 10.00% by mass or less with respect to the total amount of the halide and the epihalohydrin. 2. The method for producing a polythiol compound according to claim 1 , wherein one or more polythiol compounds selected from the group consisting of a polythiol compound represented by Formula (3) below, a polythiol compound represented by Formula (4) below, and a polythiol compound represented by Formula (5) below is produced. 3. The method for producing a polythiol compound according to claim 1 , wherein a polythiol compound represented by Formula (7) below is produced. 4. The method for producing a polythiol compound according to claim 1 , wherein an amount of the halide in the reaction is 0.70% by mass or more and 10.00% by mass or less with respect to the total amount of the halide and the epihalohydrin. 5. The method for producing a polythiol compound according to claim 1 , wherein an amount of the halide in the reaction is 0.80% by mass or more and 10.00% by mass or less with respect to the total amount of the halide and the epihalohydrin.
Assignees
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Classifications
of sulfides · CPC title
containing at least two isocyanate or isothiocyanate groups linked to the aromatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate groups, e.g. xylylene diisocyanate or homologues substituted on the aromatic ring · CPC title
- C08G18/3876Primary
containing mercapto groups · CPC title
of an acyclic saturated carbon skeleton · CPC title
Lenses · CPC title
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- What does patent US10766996B2 cover?
- Provided is a method for producing a polythiol compound, including reacting 2-mercaptoethanol with an epihalohydrin, wherein the reaction is carried out in the presence of a halide selected from the group consisting of a 2,3-dihalogeno-1-propanol and an allyl halide, and an amount of the halide in the reaction is more than 0.50% by mass and 10.00% by mass or less with respect to the total amoun…
- Who is the assignee on this patent?
- Hoya Lens Thailand Ltd
- What technology area does this patent fall under?
- Primary CPC classification C08G18/3876. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Sep 08 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).