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

Catalyst system composition for production of PET (polyethylene terephthalate) resin

A catalyst and composition technology, applied in the field of catalyst system composition, can solve the problems of yellowish color of PET resin, long process time, slow solid-state polymerization rate, etc., and achieve the effect of improving yellowish color, shortening process time and increasing rate

Inactive Publication Date: 2018-02-06
ALMIGHTY GREEN MATERIAL INC +1
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned method of utilizing titanium (Ti) catalyst to replace antimony (Sb) catalyst as condensation reaction has the advantages that the condensation reaction (condensation) rate is fast, and the PET resin made does not contain heavy metals, but at present, titanium (Ti) catalyst is used When manufacturing PET resin, there are still problems of slow solid-state polymerization (solid-state polymerization), long process time, and yellowish color of PET resin

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
  • Catalyst system composition for production of PET (polyethylene terephthalate) resin
  • Catalyst system composition for production of PET (polyethylene terephthalate) resin
  • Catalyst system composition for production of PET (polyethylene terephthalate) resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Weigh 400g of BHET monomer and 20g of ethylene glycol in the reactor, and then add 0.056g of TBT catalyst (titanium content is 20ppm of theoretical PET weight) and 0.084g of cesium tungsten oxide nano-dispersed liquid ( The cesium tungsten oxide content is 10ppm of the theoretical PET weight) catalyst system composition, and 0.03g phosphoric acid is added (the phosphorus content is 24.5ppm of the theoretical PET weight); the reaction temperature is 260℃, and the vacuum is gradually applied after 10 minutes of reaction Reduce to 60mmHg for about 30 minutes; then increase the temperature to 280°C to further reduce the vacuum to 1torr (approximately equivalent to 1mmHg), continue the reaction until the torque value displayed by the agitator reaches a fixed value, and then discharge. The subsequent solid-state polymerization steps are as follows. Weigh 50-100g of the polymerized PET product and place it in a vacuum high-temperature furnace. The reaction temperature will rise ...

Embodiment 2

[0034] Weigh 400g of BHET monomer and 20g of ethylene glycol in the reactor, and add 0.056g of TBT catalyst (titanium content is 20ppm of theoretical PET weight), 0.420g of cesium tungsten oxide nano-dispersed liquid ( The cesium tungsten oxide content is 50ppm of the theoretical PET weight) catalyst system composition, and 0.03g phosphoric acid is added (the phosphorus content is 24.5ppm of the theoretical PET weight); the reaction temperature is 260℃, and the vacuum is gradually applied after 10 minutes of reaction Reduce to 60mmHg for about 30 minutes; then increase the temperature to 280°C to further reduce the vacuum to 1torr (approximately equivalent to 1mmHg), continue the reaction until the torque value displayed by the agitator reaches a fixed value, and then discharge. The subsequent solid-state polymerization steps are as follows. Weigh 50-100g of the polymerized PET product and place it in a vacuum high-temperature furnace. The reaction temperature will rise from roo...

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
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to catalyst system composition for production of PET (polyethylene terephthalate) resin. The catalyst system composition comprises a polycondensation reaction catalyst and cesiumtungsten oxide shown in chemical formula CsxWO(3-y)Cly, wherein Cs is cesium, Cl is chlorine, w is tungsten, O is oxygen, x is larger than 0 and smaller than or equal to 1, and y is larger than or equal to 0 and smaller than or equal to 0.5. The invention also relates to the PET resin produced from the catalyst system composition and comprising 2-80 ppm of cesium tungsten oxide. Therefore, by means of the catalyst system composition, the problems of slower solid polymerization rate, long process period and yellowing in existing PET resin processes can be solved, and catalyst system composition can endow the PET resin with an infrared light absorption function.

Description

Technical field [0001] The present invention relates to a catalyst system composition, in particular to a catalyst system composition that can be used to increase the solid-state polymerization rate in a polyethylene terephthalate (polyethylene terephthalate, abbreviated PET) resin process, shorten the process time, and improve the PET resin The catalyst system composition for the problem of yellowish color. Background technique [0002] Polyethylene terephthalate (PET) resin is a polyester polymer commonly used in the manufacture of packaging containers. The containers made from this not only have good strength, but also have the advantages of good transparency and chemical resistance. The existing preparation method of PET resin sequentially includes three stages: esterification, condensation, and solid-state polymerization. [0003] Among the existing manufacturing methods, heavy metal antimony (Sb) is often used as a catalyst for the condensation reaction. For example, US Pate...

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 Applications(China)
IPC IPC(8): C08G63/85C08G63/86C08G63/83C08G63/80C08G63/183
CPCC08G63/183C08G63/80C08G63/83C08G63/85C08G63/866
Inventor 王文廷钟松政钟宝堂
Owner ALMIGHTY GREEN MATERIAL INC
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