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Fire retardant polyethylene terephthalate

A technology of ethylene glycol phthalate and terephthalic acid, which is applied in the field of flame-retardant polyester, and can solve the problems of good flame-retardant effect of polyester

Inactive Publication Date: 2009-09-09
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The other three kinds of copolymerized flame retardants have been reported in domestic and foreign patents, and the flame retardant effect of polyester is very good

Method used

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  • Fire retardant polyethylene terephthalate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0015] Terephthalic acid: produced by Yangzi Petrochemical in China, polymer grade.

[0016] Biological source of ethylene glycol: produced by Changchun Dacheng Group, the source of carbon element is corn, purity: 97%; then after heat treatment, and then treated with activated carbon, the light transmittance at 250nm is 65%, and the light transmittance at 300nm The pass rate is 90%.

[0017] Dimethyl terephthalate: produced by Fiber Intermediate Products Co., Iran

[0018] Petroleum source ethylene glycol: produced by BASF company, the source of carbon element is petroleum, purity: more than 99%.

[0019] Flame retardant:

[0020] A:

[0021] Japan's bamboo oil production, content 63% (37% EG), P content: 4.5%

[0022] B:

[0023] Produced by Jinan Santai Company, it is mixed with EG before use, and the content is 50%. P content: 14.5%.

[0024] C:

[0025] Produced by Nippon Chemical Industries, it is mixed with EG at 50% before use, and the content of P is 10.2...

Embodiment 1

[0029] With the device of the comparative example, ethylene glycol is replaced by biological source ethylene glycol, and the addition amount of other raw materials and catalysts remains unchanged, and the esterification and polycondensation reactions are completed in the same temperature range to obtain the poly(p-phenylene) of the present invention. Ethylene glycol dicarboxylate.

Embodiment 2

[0031] With the device of the comparative example, 15 kg of dimethyl terephthalate and 9.25 kg of ethylene glycol raw material of biological origin were put into the device, 5.25 g of magnesium acetate and 1.95 g of antimony trioxide were added, and the temperature was 240-250°C Carry out transesterification reaction within the range, remove methanol, when the transesterification reaction rate reaches above 95%, add 0.75 grams of phosphoric acid, add 346 grams of 13wt% titanium dioxide EG solution, then add 2.4kg of flame retardant A and EG mixture The solution is subjected to polycondensation reaction at a temperature of 230-250° C., and after reaching the set polymer viscosity IV=0.65, the polymer is spit out and pelletized for later use.

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PUM

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Abstract

The invention discloses a fire retardant polyethylene terephthalate, which is prepared by esterification reaction and polycondensation reaction of terephthalic acid or derivatives of the terephthalic acid and ethylene glycol taken as raw materials. In the polycondensation reaction, a fire retardant is added; and the carbon element of the ethylene glycol which is a raw material is sourced from biological materials. Compared with the common fire retardant polyester, the polyester of the invention has higher fire retardant effect, and the energy consumption and the emission of CO2 are reduced in the process of producing raw materials.

Description

Technical field: [0001] The invention relates to a flame-retardant polyester. Background technique: [0002] With the improvement of people's awareness of fire protection, the research and application development of flame-retardant polyester and fiber are becoming more and more active all over the world, and various flame-retardant polyester and fiber products are coming out continuously. There are two methods of flame retardant modification of polyester: blending and copolymerization. The copolymerization method is to add a compound containing two or more active functional groups and certain flame retardant elements in the polyester production process as a flame retardant monomer through copolymerization. Compared with the blending method, the method of flame retardant modified polyester has become the main method and means of polyester flame retardant modification at present because of its stable flame retardant performance, long-lasting and good spinnability. The flame r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/183C08G63/16C08G63/78C08K5/51C09K21/14
Inventor 盛思义李旭本田圭介
Owner TORAY IND INC