Monomer for optical component, polymerizable composition for optical component, cured product, spectacle lens, and method for producing monomer for optical component
US-2024336589-A1 · Oct 10, 2024 · US
Process for preparing episulfide compounds
US9051293B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9051293-B2 |
| Application number | US-201214112795-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 20, 2012 |
| Priority date | Apr 21, 2011 |
| Publication date | Jun 9, 2015 |
| Grant date | Jun 9, 2015 |
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Abstract
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Provided is a method for producing an episulfide compound, the method including a step of thiating epoxy groups of (B) an epoxy compound by a reaction with (C) a thiating agent in the presence of (A) a polyhydric hydroxyl compound having two or more hydroxyl groups.
First claim
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The invention claimed is: 1. A method for producing an episulfide compound, the method comprising thiating epoxy groups of (B) an epoxy compound by a reaction with (C) a thiating agent in the presence of (A) a polyhydric hydroxyl compound having two or more hydroxyl groups, wherein a hydroxyl value of the (A) polyhydric hydroxyl compound is 500 mg/g or more. 2. The method according to claim 1 , wherein the hydroxyl value of the (A) polyhydric hydroxyl compound…
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- C07D331/02Primary
Chemistry & Metallurgy · mapped topic
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Frequently asked questions
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- What does patent US9051293B2 cover?
- Provided is a method for producing an episulfide compound, the method including a step of thiating epoxy groups of (B) an epoxy compound by a reaction with (C) a thiating agent in the presence of (A) a polyhydric hydroxyl compound having two or more hydroxyl groups.
- Who is the assignee on this patent?
- Nakamura Akitake, Endo Takeshi, Asahi Kasei Chemicals Corp
- What technology area does this patent fall under?
- Primary CPC classification C07D331/02. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jun 09 2015 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).