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A kind of preparation method of fluorine-containing PTT random copolyester

A technology of copolyester and esterification reaction, applied in the field of preparation of fluorine-containing PTT random copolyester, to achieve the effect of easy control, good reproducibility and low dielectric constant

Active Publication Date: 2016-01-27
山东产研中科高端化工产业技术研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, the hydrophobic and antifouling modification of polyester by copolymerization can fundamentally solve the problems of timeliness, durability and wear resistance of hydrophobic and antifouling polyester.

Method used

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  • A kind of preparation method of fluorine-containing PTT random copolyester
  • A kind of preparation method of fluorine-containing PTT random copolyester
  • A kind of preparation method of fluorine-containing PTT random copolyester

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A preparation method of fluorine-containing PTT random copolyester is divided into two steps of esterification reaction and polycondensation reaction. The specific steps are:

[0042] The esterification reaction:

[0043] Using terephthalic acid (PTA) and 1,3-propanediol (PDO) as the main raw materials, and fluorine-containing modifier tetrafluoroterephthalic acid (FPTA) as the third monomer to prepare a uniform slurry and then carry out esterification reaction . The molar ratio of terephthalic acid (PTA), tetrafluoroterephthalic acid (FPTA) and 1,3-propanediol (PDO) in the raw material is: PTA: FPTA=1:0.02; (PTA+FPTA): PDO=1: 1.3. No external catalyst is required in the esterification reaction, pressurized in a nitrogen atmosphere, the pressure is controlled at 0.3MPa, the temperature is controlled at 270°C, and the esterification water distillate reaches more than 90% of the theoretical value as the reaction end point.

[0044] The polycondensation reaction:

[0...

Embodiment 2

[0049] A preparation method of fluorine-containing PTT random copolyester is divided into two steps of esterification reaction and polycondensation reaction. The specific steps are:

[0050] The esterification reaction:

[0051] Using terephthalic acid (PTA) and 1,3-propanediol (PDO) as the main raw materials, and fluorine-containing modifier tetrafluoroterephthalic acid (FPTA) as the third monomer to prepare a uniform slurry and then carry out esterification reaction . The molar ratio of terephthalic acid (PTA), tetrafluoroterephthalic acid (FPTA) and 1,3-propanediol (PDO) in the raw material is: PTA:FPTA=1:0.06; (PTA+FPTA):PDO=1: 1.4. No external catalyst is needed in the esterification reaction, pressurization is carried out in a nitrogen atmosphere, the pressure is controlled at 0.3MPa, the temperature is controlled at 265°C, and the esterification water distillate reaches more than 90% of the theoretical value as the reaction end point.

[0052] The polycondensation r...

Embodiment 3

[0057] A preparation method of fluorine-containing PTT random copolyester is divided into two steps of esterification reaction and polycondensation reaction. The specific steps are:

[0058] The esterification reaction:

[0059] Using terephthalic acid (PTA) and 1,3-propanediol (PDO) as the main raw materials, and fluorine-containing modifier tetrafluoroterephthalic acid (FPTA) as the third monomer to prepare a uniform slurry and then carry out esterification reaction . The molar ratio of terephthalic acid (PTA), tetrafluoroterephthalic acid (FPTA) and 1,3-propanediol (PDO) in the raw material is: PTA: FPTA=1:0.1; (PTA+FPTA):PDO=1: 1.6. No external catalyst is needed in the esterification reaction, pressurized in a nitrogen atmosphere, the pressure is controlled at 0.2MPa, the temperature is controlled at 260°C, and the esterification water distillate reaches more than 90% of the theoretical value as the reaction end point.

[0060] The polycondensation reaction:

[0061]...

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Abstract

The invention relates to a fluorine-containing PTT random copolymerized ester and a preparation method thereof. The fluorine-containing PTT random copolymerized ester is prepared as follows: taking tetrafluoroterephthalic acid, terephthalic acid and 1,3-propylene glycol as raw materials, in nitrogen atmosphere, under the conditions of normal pressure to 0.3 MPa and 250 DEG C to 270 DEG C, performing an esterification reaction; then performing a pre-polycondensation reaction under the conditions of negative pressure and 260 DEG C to 270 DEG C; and subsequently vacuumizing to the absolute pressure of less than 100 pa, controlling the reaction temperature at 260-275 DEG C for a final condensation polymerization to prepare the fluorine-containing PTT random copolymerized ester. The obtained fluorine-containing PTT random copolymerized ester has good thermal stability and workability, and can be directly used to spin. Due to the introduction of fluorine atoms, the polyester is improved in superhydrophobicity, hydrophobicity, oleophobicity and antifouling performance, and has great application prospect in manufacture of waterproof garments, dirt-resistant working clothes and working clothes in certain special industries.

Description

technical field [0001] The invention relates to a preparation method of a fluorine-containing PTT random copolyester, in particular to a fluorine-containing PTT random copolyester in which hydrogen on a benzene ring is replaced by fluorine and a preparation method thereof. Background technique [0002] Polyester is one of the most widely used synthetic polymers. As early as the 1940s, ethylene terephthalate (PET) was synthesized and found to have excellent properties. It is used in textile, packaging, medical and health, automobile, electronic appliances, safety protection, environmental protection and other fields. [0003] Polytrimethylene terephthalate (PTT) is a promising new polyester developed after polyethylene terephthalate (PET) and butylene terephthalate (PBT). Polymer materials, in 1998, was rated as one of the six new petrochemical products by the United States. Compared with PET and PBT, PTT has better elasticity, dimensional stability and dyeability. At the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/682C08G63/78C08G63/85C08K5/523C08K5/521C08K5/524
Inventor 吴国旺曾晓元丁建中黄卓旺江立平宋怀军张荣
Owner 山东产研中科高端化工产业技术研究院有限公司
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