Composition and optical material and lens using the same
By combining cyclic sulfur compounds with aromatic backbone and 1,2,3,5,6-pentathioheptane, the problem of the decrease in heat resistance of optical materials when increasing the refractive index is solved, high refractive index and excellent heat resistance are achieved, and it is suitable for the development of high-performance optical materials.
CN115989217BActive Publication Date: 2025-03-28MITSUBISHI GAS CHEM CO INC
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Patent Information
- Application Number
- CN202180053277.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2020-10-19
- Filing Date
- 2021-09-10
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2041-09-10
AI Technical Summary
Technical Problem
While the existing optical materials increase the refractive index, their heat resistance is easily reduced, making it difficult to take into account both high refractive index and excellent heat resistance.
Method used
By combining cyclic sulfur compounds with aromatic backbone and 1,2,3,5,6-pentathioheptane, a new composition is formed to optimize the composition of the optical material to improve refractive index and heat resistance.
Benefits of technology
It achieves high refractive index and excellent heat resistance, provides higher performance optical materials, suitable for applications such as glasses and lenses.
✦ Generated by Eureka AI based on patent content.
Abstract
Provided is a composition that can produce an optical material with a high refractive index and excellent heat resistance. A composition comprising: a compound (a) represented by the following formula (1) and 1,2,3,5,6-pentathiacycloheptane (b). In the above formula, Ar represents an aromatic ring, m represents an integer of 2 to 8, and n represents an integer of 0 to 6, wherein m+n is less than the number of carbon atoms constituting the aromatic ring, and R 1 Each independently represents an alkylthio group, an alkylthio oxide group, a thiol group, a halogen group, a hydroxyl group, a dialkylthiocarbamoyl group or a dialkylcarbamoylthio group.
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