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Phosphorous-nitrogen-containing polyethylene glycol terephthalate flame retardant copolyester and application of flame retardant copolyester

A technology of ethylene phthalate and terephthalic acid is applied in the field of polymer synthesis of halogen-free flame retardant polymer new materials, which can solve the problem of lack of phosphorus-nitrogen synergistic flame retardant, failure to pass the flame retardant B1 level standard, etc. problem, to achieve the effect of increased compatibility, good washing durability and good compatibility

Active Publication Date: 2015-03-04
HANGZHOU XIANGJUN TEXTILE FLAME RETARDANT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The products prepared by this method lack the synergistic flame retardancy of phosphorus and nitrogen. In the flame retardancy test, there are still obvious molten drops, and in many application fields, they cannot pass the GB8624-2012 flame retardancy B1 standard.

Method used

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  • Phosphorous-nitrogen-containing polyethylene glycol terephthalate flame retardant copolyester and application of flame retardant copolyester
  • Phosphorous-nitrogen-containing polyethylene glycol terephthalate flame retardant copolyester and application of flame retardant copolyester
  • Phosphorous-nitrogen-containing polyethylene glycol terephthalate flame retardant copolyester and application of flame retardant copolyester

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Mix 68.8 kilograms of ethylene glycol and 166 kilograms of terephthalic acid, add 0.03 kilograms of catalyst antimony trioxide, then evacuate and replace four times with nitrogen, add nitrogen to make the pressure rise to 0.15MPa, and heat up To 195°C, while maintaining the pressure at 0.20MPa, carry out the first esterification reaction, the esterification reaction is 1.0 hour, the esterification rate is 90.3%, and the first esterification product is obtained;

[0038] (2) Mix 21.4 kilograms of ethylene glycol and 42.8 kilograms of 2-carboxyethylphenylphosphinic acid, add 0.007 kilograms of antimony trioxide as a catalyst, then evacuate in turn, replace with nitrogen four times, and pressurize to 0.25MPa , the temperature was raised to 195° C., while the pressure was maintained at 0.30 MPa, and the second esterification reaction was carried out. The esterification reaction was 1.1 hours, and the esterification rate was 65%. When the generated water was close to the ...

Embodiment 2

[0045] (1) Mix 74.5 kilograms of ethylene glycol and 166 kilograms of terephthalic acid, add 0.03 kilograms of catalyst antimony trioxide, then evacuate and replace four times with nitrogen, add nitrogen to make the pressure rise to 0.20 MPa, and raise the temperature To 195°C, while the pressure is maintained at 0.25MPa, carry out the first esterification reaction, the esterification reaction is 1.5 hours, the esterification rate is 91.5%, and the first esterification product is obtained when the generated water is close to the theoretical amount;

[0046] (2) Mix 12.4 kilograms of ethylene glycol and 21.4 kilograms of 2-carboxyethylphenylphosphinic acid, add 0.004 kilograms of catalyst antimony trioxide, then sequentially evacuate and replace with nitrogen for four times, then pressurize to 0.30MPa, The temperature was raised to 195°C while the pressure was maintained at 0.35MPa, and the second esterification reaction was carried out. The esterification reaction lasted for 2....

Embodiment 3

[0055] (1) Mix 80.7 kg of ethylene glycol and 166 kg of terephthalic acid, add 0.03 kg of catalyst antimony trioxide, then evacuate and replace with nitrogen for four times, add nitrogen to make the pressure rise to 0.28 MPa, and heat up To 205°C, while the pressure is maintained at 0.35MPa, the first esterification reaction is carried out, the esterification reaction is 2.7 hours, the esterification rate is controlled at 95.0%, and the first esterification product is obtained when the generated water is close to the theoretical amount;

[0056] (2) Mix 12.4 kilograms of ethylene glycol and 21.4 kilograms of 2-carboxyethylphenylphosphinic acid, add 0.004 kilograms of catalyst antimony trioxide, then evacuate in turn, pressurize to 0.35MPa after four times of nitrogen displacement, The temperature was raised to 200°C, while the pressure was maintained at 0.35MPa, and the second esterification reaction was carried out. The esterification reaction lasted for 2.7 hours, and the est...

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Abstract

The invention discloses a phosphorous-nitrogen-containing polyethylene glycol terephthalate flame retardant copolyester and an application of the flame retardant copolyester. Through introducing phosphorous and nitrogen flame retardant monomers into a flame retardant polyester polymer, in situ synergistic interaction inflaming retarding of phosphorous and nitrogen flame retardant elements is achieved; phosphorus-containing polyester dihydric alcohol is introduced to adjust the phosphorous content of the flame retardant copolyester, and the flexibility, the spinnability and the dyeability of a chain segment; tri(2-ethoxy) isocyanurate is introduced, and has positive significance on extender chain crosslinking, tackifying and anti-dripping of the copolyester; the phosphorous-nitrogen-containing polyethylene glycol terephthalate flame retardant copolyester and the product of the flame retardant copolyester can be widely applied to the fields such as curtain fabrics, soft wall wrapping cloth, electric power industrial fabrics, energy industrial fabrics, water conservancy geotextile, carpets, hometextile and medical partition curtains; and the related flame retardant products pass through various flame retardant standards (for example, BS5852-2006 flame retardant standard, BS5867-2-2008 flame retardant standard, or B1 grade of GB8624-2012 flame retardant standard and the first grade of GB20286-2006 flame retardant standard).

Description

Technical field: [0001] The invention relates to the technical field of a new polymer synthesis halogen-free flame-retardant polymer material, in particular to a halogen-free phosphorus-nitrogen flame-retardant copolyester with good flame-retardant stability and its product application. Background technique: [0002] With the enhancement of people's awareness of fire safety and the improvement of economic and technological level, in order to ensure the safety of people's lives and property, countries all over the world have imposed mandatory regulations on textiles and grade standards for flame-retardant textiles to varying degrees. The flame retardant performance of flame retardant textiles is mainly judged by checking the limiting oxygen index (LOI%) and damage degree of the product to judge its pros and cons. Grade" (LOI%≥32%) and "Flame Retardant B2 Grade" (32%>LOI%≥26%). [0003] There are two ways to obtain the flame retardant of textiles. One is post-treatment of ...

Claims

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Application Information

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IPC IPC(8): C08G63/692C08G63/685C08G63/78C08L67/00
Inventor 刘清华唐俊毅
Owner HANGZHOU XIANGJUN TEXTILE FLAME RETARDANT TECH
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