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

Polyester polycondensation catalyst and preparation method and application thereof

A polycondensation catalyst and catalyst technology, applied in the field of polyester polycondensation catalyst and its preparation and application, can solve problems affecting product performance, achieve the effects of suppressing side reactions, high brightness, and improving activity

Active Publication Date: 2010-11-24
INST OF CHEM CHINESE ACAD OF SCI
View PDF0 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the blending process, PET will inevitably be degraded due to the action of thermal oxygen, which will affect the product performance.

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
  • Polyester polycondensation catalyst and preparation method and application thereof
  • Polyester polycondensation catalyst and preparation method and application thereof
  • Polyester polycondensation catalyst and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1, preparation polyester polycondensation catalyst

[0025] Take 5mL concentrated hydrochloric acid, 10mL ethanol, mix with 19.6g tetraethyl orthosilicate (TEOS) at room temperature, stir for 1 hour to obtain the product A SiO 2 Sol.

[0026] Take 2.5g tetrabutyl titanate at room temperature and mix with 10mL concentrated hydrochloric acid, stir at room temperature for 1 hour to obtain the product BTiO 2 Sol.

[0027] The product A SiO 2 Sol and product B TiO 2 The sols were mixed and stirred at 50°C for 12 hours to obtain the product CTiO 2 / SiO2 Sol.

[0028] At 80°C, the product C TiO 2 / SiO 2 The sol was vacuum-dried to obtain catalyst D.

[0029] The product C TiO 2 / SiO 2 The sol was freeze-dried to obtain catalyst E.

[0030] The product C TiO 2 / SiO 2 The sol was loaded into a semipermeable membrane and placed in deionized water to remove Cl - , to obtain catalyst F.

[0031] The product C TiO 2 / SiO 2 Catalyst G was obtained by react...

Embodiment 2

[0034] Embodiment 2, preparation polyester polycondensation catalyst

[0035] Take 5mL concentrated hydrochloric acid, 10mL ethanol, mix with 19.6g tetraethyl orthosilicate (TEOS) at room temperature, stir for 1 hour to obtain the product A SiO 2 Sol.

[0036] Take 2.5g TiCl 4 Add dropwise into 20ml EG at 0°C, and pass through dry NH 3 The gas was first prepared according to the Nelles method provided in the following literature, but the product was not hydrolyzed, and then supported on SiO 2 Above the Sol: Li Dacheng, Zhou Dali, Chen Chaozhen, etc. Synthesis of Titanium Ethoxide and Preparation of TiO by Hydrolysis 2 Research on Micropowder [J]. Functional Materials, 1995, 26(3): 278-282.

[0037] In the above preparation steps, the resulting product was quickly added to A to obtain TiO 2 / SiO 2 Sol J.

[0038] Freeze-dry J under vacuum to obtain catalyst K.

[0039] Treat J with a low-temperature hydrothermal method, the hydrothermal temperature is 50-200° C., and t...

Embodiment 3

[0046] Embodiment 3, the application of polyester polycondensation catalyst as catalyst in the preparation of polyester materials

[0047] Utilize the polyester polycondensation catalyst that the embodiment of the present invention 1 provides to prepare the steps of PET polyester material as follows:

[0048] Take 86.4g of terephthalic acid and 32.3g of ethylene glycol, and carry out esterification at a pressure of 0.3MPa and a temperature of 220-250°C until the theoretical value of water is distilled off. Add 1 mg of one of the catalysts (catalyst D-I) prepared in Example 1 to obtain PET materials N-S respectively. Polycondensation time and product properties are shown in Table 2.

[0049] It can be seen from the data in Table 2 that the electronic binding energy of titanium and the particle size of the catalyst greatly affect the activity of the catalyst: for catalysts D, E, and F, the particle size decreases in turn, the activity increases, and the product performance is a...

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

No PUM Login to View More

Abstract

The invention discloses a polyester polycondensation catalyst and a preparation method and application thereof. The preparation method of the polyester polycondensation catalyst comprises the following steps of: reacting TiO2 / SiO2 sol with a nitrogenous or phosphorous compound; and controlling the grain size of a product to obtain the polyester polycondensation catalyst. The preparation method of the polyester polycondensation catalyst has a simple and convenient process, is easy to operate and is suitable for large-scale industrial production; besides, the catalyst provided by the invention has high catalytic efficiency, not only can catalyze the polymerization of aromatic polyesters and co-polyesters thereof, but also can catalyze the polymerization of aliphatic polyesters and co-polyesters thereof by changing the proportions of components of the catalyst and adjusting and controlling the activity of the catalyst, and has extensive application prospects.

Description

technical field [0001] The invention relates to a polyester polycondensation catalyst, a preparation method and application thereof. Background technique [0002] Polyester is a very important material. Due to its good mechanical properties, thermal and chemical stability and low cost, it is widely used in packaging, transportation, textiles, construction, etc. and is closely related to people's daily life. field. Now, my country has become the world's largest polyester producer, and the domestic polyester production in 2007 has exceeded 20 million tons. [0003] Although the scale of polyester production in my country is relatively large, the main catalysts used in domestic polyester production facilities are antimony-based catalysts that are potentially toxic to the human body and the environment. Polyester materials prepared by using antimony-based catalysts have relatively stable comprehensive properties, but due to the toxicity of antimony and the disadvantages of gra...

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
IPC IPC(8): C08G63/87C08G63/85C08G63/183C08G63/16C08G64/30
Inventor 冯润财殷明李春成张栋管国虎肖耀南
Owner INST OF CHEM CHINESE ACAD OF SCI
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