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A kind of highly hydrophilic flame-retardant polyester and preparation method thereof

A technology of flame-retardant polyester and high hydrophilicity, applied in the field of polyester and its preparation, to achieve the effect of improving hydrophilicity, lowering melting point, and increasing flexibility

Active Publication Date: 2015-12-23
POLY PLASTIC MASTERBATCH SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no report on the use of sorbitol to prepare polyester for micro-modification.

Method used

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  • A kind of highly hydrophilic flame-retardant polyester and preparation method thereof
  • A kind of highly hydrophilic flame-retardant polyester and preparation method thereof
  • A kind of highly hydrophilic flame-retardant polyester and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047]

[0048] The copolymer flame retardant CEPPA and ethylene glycol were mixed at a molar ratio of 1:1.2, and reacted at 100° C. for 1 hour to obtain the reaction product CEPPA-EG. Mix tetraethoxysilane (TEOS) and ethylene glycol at a molar ratio of 1:4, and react under the action of catalyst HCl to obtain a tetrakis (2-hydroxyethyl) orthosilicic acid solution. The terephthalic acid and ethylene glycol slurry were mixed at a molar ratio of 1:1.05 to prepare a slurry. The prepared slurry is mixed with the catalyst tetrabutyl titanate and then added to the esterification reactor for the first esterification reaction. The first esterification reaction temperature is 225° C., the reaction time is 4 hours, and the relative pressure of the reaction is 0 MPa. When the esterification reaction reached 82%, sorbitol and polyethylene glycol (PEG-200) were added for the second esterification reaction. The second esterification reaction temperature was 240°C, and the esterification reac...

Embodiment 2

[0050]

[0051] The copolymer flame retardant CEPPA and ethylene glycol were mixed at a molar ratio of 1:1.8, and reacted at 100° C. for 1 hour to obtain the reaction product CEPPA-EG. Mix hydroxy-terminated silicone oil with ethylene glycol at a molar ratio of 1:4.4. The catalyst SiCl 4 Under the action, the hydroxyl-terminated silicone oil-EG solution is obtained by reaction. The terephthalic acid and ethylene glycol slurry were mixed at a molar ratio of 1:2.0 to prepare the slurry. The prepared slurry is mixed with ethylene glycol antimony, antioxidant 1010 and trimethyl phosphate and then added to the esterification reactor for the first esterification reaction. The first esterification reaction temperature is 250°C, and the reaction time is 0.5h , The relative pressure of the reaction is 0.4MPa. When the esterification reaction reaches 95%, 1,2-propylene glycol and polyethylene glycol (PEG-400) are added for the second esterification reaction. The second esterification re...

Embodiment 3

[0053]

[0054] The copolymer flame retardant CEPPA and 1,2 propylene glycol were mixed at a molar ratio of 1:2.0, and reacted at 100° C. for 1 hour to obtain the reaction product CEPPA-1,2 propylene glycol. Mix tetraethoxysilane (TEOS) with ethylene glycol at a molar ratio of 1:4.6, and then mix it on the catalyst Al(OC 2 H 5 ) 3 Under the action of the reaction, tetrakis (2-hydroxyethyl) orthosilicic acid solution is obtained. The terephthalic acid and ethylene glycol slurry were mixed in a ratio of 1:1.6 to prepare the slurry. The prepared slurry is mixed with antimony trioxide and titanium dioxide mixture, antioxidant 168 and alkyl phosphoric acid diester, and then added to the esterification reactor for the first esterification reaction. The first esterification reaction temperature is 240°C. The time is 3h, and the relative pressure of the reaction is 0.3MPa. When the esterification reaction reaches 92%, 1,3-butanediol and polyethylene glycol (PEG-600) are added for the ...

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Abstract

The invention relates to high-hydrophilic flame-retardant polyester and a preparation method thereof. The flame-retardant polyester comprises terephthalic acid, polyatomic alcohol, a copolymerization fire retardant and hydroxyl-terminated siloxane. The preparation method comprises the steps as follows: 1), the copolymerization fire retardant is reacted with the polyatomic alcohol, so that a reaction product CEPPA-polyatomic alcohol is obtained; 2), the hydroxyl-terminated siloxane is reacted with ethylene glycol under the effect of a catalyst, so that a hydroxyl-terminated siloxane-ethylene glycol solution is obtained; 3), a slurry is prepared, and the prepared slurry is added to an esterification reaction kettle for first esterification reaction; 4), when the collection amount of a by-product reaches 82%-95% of a theoretical value, the polyatomic alcohol, 5-sodium sulfo bis(-hydroxyethyl) isophthalate (SIPE) and PEG (polyethylene glycol) are added, and second esterification reaction is performed; and 5), after the esterification reaction, products obtained in the step 1) and the step 2) are added to the reaction kettle, and condensation polymerization is performed, so that the high-hydrophilic flame-retardant polyester is obtained. The high-hydrophilic flame-retardant polyester has a higher flame-retardant function and a higher hydrophilic function.

Description

Technical field [0001] The invention belongs to the field of polyester and its preparation, and particularly relates to a highly hydrophilic flame-retardant polyester and a preparation method thereof. Background technique [0002] Since the large-scale industrialization of polyester and polyester fiber in the 1970s, the development speed is much faster than other synthetic materials and synthetic fibers. In 2011, my country's polyester fiber output was 27.95 million tons, accounting for about 83% of my country's chemical fiber output; It accounts for about 70% of the world's polyester fiber production. In the next 10 years, the world's polyester and polyester fiber will maintain a growth rate of more than 3%, and polyester fiber will account for more than 60% of the world's total fiber products. The physical and mechanical properties of polyester fiber such as strength, abrasion resistance, resilience and dimensional stability are good, which can meet the needs of various applica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/695C08G63/692C08G63/672C08G63/20C08G63/85
Inventor 王朝生方孝芬王华平李建武陈向玲
Owner POLY PLASTIC MASTERBATCH SUZHOU
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