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Titanium-based phosphorus-containing copolyester and its preparation method

A copolyester, titanium-based technology, applied in the polyester field, can solve the problems of poor dispersion, decreased activity and poor stability of titanium-based catalysts, and achieve the effects of reducing catalyst dosage, low cost and excellent flame retardant performance

Active Publication Date: 2022-04-15
上海慧翌新材料科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a titanium-based phosphorus-containing copolyester and its preparation method in order to overcome the problems of poor dispersion, poor stability and decreased activity of titanium-based catalysts in the synthesis process of titanium-based phosphorus-containing copolyesters in the prior art

Method used

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  • Titanium-based phosphorus-containing copolyester and its preparation method
  • Titanium-based phosphorus-containing copolyester and its preparation method
  • Titanium-based phosphorus-containing copolyester and its preparation method

Examples

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Effect test

Embodiment 1

[0045] A method for preparing a sheet-like titanium-based polyester catalyst. After mixing terephthalic acid, ethylene glycol, and n-butyl titanate at a molar ratio of 1:1.5:0.01, the temperature is 150°C and the pressure is 0.01MPa. After reacting for 0.5h under the same conditions, the temperature was raised to 200°C and the reaction was continued until the degree of esterification reached 70%. The reaction was terminated, filtered while hot, and then pulverized and ground to obtain a sheet-shaped titanium-based polyester catalyst with an average particle size of 0.5 μm.

Embodiment 2～6

[0047] A preparation method of a sheet-shaped titanium-based polyester catalyst, after mixing BT, CT and DT with a molar ratio of AT, reacting GT at a temperature of ET and a pressure of FT, then raising the temperature to HT to continue the reaction until esterification When the degree reaches IT, the reaction is terminated, filtered while hot, and then pulverized and ground to obtain a sheet-shaped titanium-based polyester catalyst with an average particle size of JT.

[0048]

[0049]

Embodiment 7

[0051] A preparation method of a polyester titanium catalyst composite material system, firstly adding a mass concentration of 30wt% The ethylene glycol dispersion of the flaky titanium-based polyester catalyst, and then uniformly stirred and cooled to obtain a polyester titanium-based catalyst composite material system, wherein the flaky titanium-based polyester catalyst is prepared by Example 1, polyester The mass content of the sheet-shaped titanium-based polyester catalyst in the titanium-based catalyst composite material system body is 20 wt%.

[0052] Disperse 0.1g polyester titanium catalyst composite material system in 30mL water, heat and stir at 70°C for 3h, wash and dry the residual solid with absolute ethanol, and then perform FTIR characterization of the sample, as shown in figure 1 As can be seen from the figure, the polyester titanium series catalyst composite system sample in the present invention does not have much change in the crystal structure and character...

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Abstract

The invention relates to a titanium-based phosphorus-containing copolyester and a preparation method thereof. The preparation method is as follows: firstly, an esterification product is synthesized by using PTA, EG and a polyester titanium catalyst composite material system as main raw materials, and then the esterification product is mixed with Phosphorous flame retardant monomers are mixed and polycondensed to obtain titanium-based phosphorus-containing copolyesters; the prepared titanium-based phosphorus-containing copolyesters are mainly composed of copolyester molecular chains and titanium-based catalysts dispersed between molecular chains , the copolyester molecular chain is mainly composed of PTA segment, EG segment and phosphorus-containing flame retardant monomer segment. The LOI of titanium-based phosphorus-containing copolyester is 34-36.6%, the SDR is 10-13, and the UL‑ The 94 grade is V‑0, and the sum of the fire extinguishing time and the smoke extinguishing time is 2-15s. The preparation method of the titanium-based phosphorous-containing copolyester of the present invention has simple process, low cost and good application prospect; the titanium-based phosphorous-containing copolyester prepared by the preparation method of the present invention Excellent combustion performance.

Description

technical field [0001] The invention belongs to the technical field of polyester and relates to a titanium-based phosphorus-containing copolyester and a preparation method thereof. Background technique [0002] Polyester, especially polyethylene terephthalate (PET), is widely used due to its various excellent properties. Polyester fiber is the largest variety of synthetic fiber and has always dominated the chemical fiber market. In most cases, the polyester fibers mentioned mostly refer to PET fibers. Due to its own structural characteristics, textiles are the main materials that cause fires. Therefore, people pay more and more attention to the flame retardancy of textiles and clothing (such as evening wear, carpets, curtains and mattresses, etc.). In order to protect people's lives and property safety, many countries have formulated relevant technical regulations and standards, and put forward requirements for the flame retardancy of textiles such as evening wear, carpets,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/692C08G63/85
CPCC08G63/6926C08G63/85
Inventor 詹伟东孙宾王小兵
Owner 上海慧翌新材料科技有限公司