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Urethane-based optical member and method for producing same
US9499656B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9499656-B2 |
| Application number | US-201314407209-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 12, 2013 |
| Priority date | Jun 12, 2012 |
| Publication date | Nov 22, 2016 |
| Grant date | Nov 22, 2016 |
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Abstract
Official abstract text for this publication.
Provided are a urethane optical member that has excellent transparency without turbidity or fog and a high refractive index, and a method for producing the same. A urethane optical member including at least one kind of structures represented by the formula (1) or (2) in a structure constituting the optical member, and a method for producing the same.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for producing a urethane optical member in which a monomer composition comprising at least one kind selected from (i) 4,4′-diphenylmethane diisocyanate and a dimer compound represented by the following formula (1-1) dissolved therein and (ii) tolylene diisocyanate and a dimer compound represented by the following formula (2-1) dissolved therein, another polyisocyanate compound and a polythiol compound are polymerized:…
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Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
- C08G18/7671Primary
Chemistry & Metallurgy · mapped topic
- C08G18/73Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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Frequently asked questions
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- What does patent US9499656B2 cover?
- Provided are a urethane optical member that has excellent transparency without turbidity or fog and a high refractive index, and a method for producing the same. A urethane optical member including at least one kind of structures represented by the formula (1) or (2) in a structure constituting the optical member, and a method for producing the same.
- Who is the assignee on this patent?
- Hoya Corp
- What technology area does this patent fall under?
- Primary CPC classification C08G18/7671. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Nov 22 2016 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).