Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Benzo[c]pyrrolidone copolycarbonate optical articles, articles formed therefrom, and methods of making the same

A technology of pyrrolidone carbonate and copolycarbonate, applied in optics, optical components, optical components, etc.

Active Publication Date: 2022-06-28
SHPP GLOBAL TECH BV
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Finally, depending on the application, higher levels of ultraviolet (UV) stability may be required

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Benzo[c]pyrrolidone copolycarbonate optical articles, articles formed therefrom, and methods of making the same
  • Benzo[c]pyrrolidone copolycarbonate optical articles, articles formed therefrom, and methods of making the same
  • Benzo[c]pyrrolidone copolycarbonate optical articles, articles formed therefrom, and methods of making the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-21

[0142] Various copolycarbonates were prepared from the monomers shown in Table 2. Addition times are given in % of phosgene. Glass transition temperature, weight average molecular weight (g / mol), hydrolytic stability (Mw loss) and UV resistance were tested. The results are summarized in Tables 2 and 3 and figure 1 and 2 middle.

[0143] Table 2.

[0144]

[0145]

[0146] The total molar percentage of benzo[c]pyrrolone monomer, high heat bisphenol monomer and BPA monomer is 100%.

Embodiment 47-104

[0156] Tables 4-9 show copolycarbonates with high glass transition temperatures and improved hydrolytic stability.

[0157]Molecular models were used to calculate Tg as well as viscosity, refractive index (RI), modulus and fracture stress. The model used to calculate all properties except flow uses the following method. First, the repeating unit geometry was optimized using the Dreiding force field (J. Phys. Chem. 94(26)(1990): pp. 8897-8909). Once the geometry is optimized, the backbone (ie, identification of side groups and atoms) is defined. The above properties are calculated using the concept of a connectivity index, as opposed to the most common theoretical approach (see Ind.Eng.Chem.Res.38(1999):1884-1892; Prediction of polymer properties. CRC Press, 2002; Properties of polymers : their correlation with chemical structure; their numerical estimation and prediction from additive group contributions. (Elsevier, 2009; and Polymer 45(26)(2004):8651-8659)). This means tha...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
glass transition temperatureaaaaaaaaaa
thicknessaaaaaaaaaa
glass transition temperatureaaaaaaaaaa
Login to View More

Abstract

Copolycarbonate optical articles include polycarbonate compositions comprising: a copolycarbonate having: 2 to 60 mole percent benzo[c]pyrrolidone carbonate units, 2 to 90 mole percent refractory carbonate units, and optionally 2 to 60 mol% of bisphenol A carbonate units. The copolycarbonate has less than 100 ppm of each of benzo[c]pyrrolidone, high-heat bisphenol, and bisphenol A monomer, and less than 5 ppm of each ion, and is composed of monomers each having a purity of at least 99.6% preparation. The polycarbonate composition has a glass transition temperature of 200° C. to 200° C. and a yellowness index of less than 30.

Description

Background technique [0001] The present disclosure relates generally to polycarbonate optical articles, and more particularly to copolycarbonate optical lenses, methods of making the same, and uses thereof. [0002] Polycarbonate can be used to manufacture articles and assemblies for a wide range of applications, from automotive parts to electronic devices. Due to its wide range of uses, especially in lenses used or assembled in high heat environments, it is desirable to provide polycarbonates that have high transmittance and low chromaticity and that can withstand high temperatures without deformation or discoloration. Furthermore, it may be desirable to be able to tune the refractive index of the material depending on the application. Finally, depending on the application, higher levels of ultraviolet (UV) stability may be required. [0003] Accordingly, there remains a need for polycarbonates with an improved balance of high thermal and optical properties. It would be a ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08G64/12C08G64/30G02C7/04G02B1/04
CPCC08G64/12C08G64/307G02B1/041G02B1/043C08L69/00
Inventor 保罗·迪安·西贝特赵炜马克·阿德里安乌斯·约翰内斯·范·德·梅舒巴施里·斯瓦米纳坦杰基索尔·帕尔乔迪·卡尔韦拉斯瓦伊迪亚纳特·拉玛克里希南
Owner SHPP GLOBAL TECH BV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com