Reflection plate and light emitting device
A technology for light-emitting devices and reflectors, applied in reflectors, lighting devices, components of lighting devices, etc., to achieve the effects of excellent heat resistance and excellent reflectivity
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0130] Example 1
[0131] In a reactor equipped with a stirrer, a torque meter, a nitrogen introduction tube, a thermometer, and a reflux condenser, 994.5g (7.2mol) of p-hydroxybenzoic acid and 446.9g (2.4mol) of 4,4′-bis Hydroxybiphenyl, 299g (1.8mol) of terephthalic acid, 99.7g (0.6mol) of isophthalic acid and 1347.6g (13.2mol) of acetic anhydride, and 0.2g of 1-methylimidazole was added. After the atmosphere in the reactor was sufficiently replaced with nitrogen and heated to 150°C in 30 minutes under a nitrogen stream, the mixture was refluxed for 1 hour while maintaining the temperature.
[0132] 1-methylimidazole (0.9g) was added and then heated to 320°C in 2 hours and 50 minutes while distilling off acetic acid and unreacted acetic anhydride produced as by-products. After the completion of the reaction, that is, after confirming the torque increase, a prepolymer was obtained.
[0133] The formed prepolymer was cooled to room temperature, ground by a coarse mill, heated from...
Example
[0135] Example 2-5 and Comparative Example 1-6
[0136] The liquid crystal polyester 1 used in Example 1 and different fillers were mixed at the mixing ratio shown in Table 1 to obtain a resin composition. The reflector sample has been obtained in the same manner as in Example 1, and different measurements have been performed. The results are shown in Table 1 and Table 2.
[0137] Table 1
[0138]
[0139] Table 2
[0140]
[0141] As shown in Table 1, compared with the sample not containing the silica-based filler (component (C)) added thereto (see Comparative Examples 1-5), it contains all components (A)-(C). ) Samples showed higher reflectivity (see Examples 1-5). It has been found that although a sample with high reflectance can be obtained by using a large amount of titanium dioxide filler (see Comparative Example 2), the sample has drastically deteriorated heat resistance at the time of welding. Among the samples containing fillers (glass beads) made of glass instead of ...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap