Flame retardant cationic dyeable polyesters and preparation method

A copolymer and cationic technology, which is applied in the field of functional polyester and its preparation, can solve the problems of limited application of antimony-based catalysts, poor spinnability and poor durability of raw yarn, and achieve excellent cationic dyeability, excellent flame retardancy, Good spinning effect

Inactive Publication Date: 2008-06-18
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The first method, although it is advantageous in terms of manufacturing cost, has the disadvantage of poor durability
The second method includes a blending method using a flame retardant material (flame retardant) and another blending method using a flame retardant masterbatch. The former has problems such as poor spinnability of raw yarn and reduced physical properties, while the latter has problems such as viscosity and color bottleneck
Although this type of flame retardant can indeed play a good flame retardant effect after being added to the fiber, it has quite serious disadvantages: the color of the polymer deteriorates, the light resistance decreases, and the flame retardant is damaged during the combustion process. produce toxic gases, etc.
Because antimony compounds themselves have certain toxicity and coexist with highly toxic arsenic in nature, the application of antimony-based catalysts is limited to a certain extent.
In terms of environmental protection, antimony-containing ethylene glycol residues must be disposed of. Antimony will be leached out during the fabric dyeing process, causing pollution to process water

Method used

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  • Flame retardant cationic dyeable polyesters and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] 100 grams of terephthalic acid and 45 grams of ethylene glycol were put into the beating tank, and the lithium metal element in the lithium acetate was 35 ppm relative to the polyester. Then the slurry is supplied to an esterification tank with partially melted polyester material to carry out an esterification reaction at 250°C. After the esterification reaction finishes, in this oligomer, add the SIPE (Jiangsu Qunfa Company product) that accounts for polyester total amount 3.0wt%, the FR-1 of 0.55wt%, tetrabutyl titanate (TBT, Jiangsu Yonghua fine Chemicals Co., Ltd.) the addition of titanium metal elements is 10ppm relative to the polyester, the addition of phosphorous element phosphorus is 30ppm relative to the polyester, wherein tetrabutyl titanate (TBT) and phosphoric acid are ethylene glycol solutions. Then pressurize to below 200 Pa within 1 hour, and carry out polymerization reaction at 280° C. to obtain polyester copolymer.

[0047] The preparation process of ...

Embodiment 8

[0067] A method for preparing a flame-retardant cationic dyeable polyester copolymer, including esterification and polycondensation reactions, using terephthalic acid and ethylene glycol as the first monomer and the second monomer in the reaction; reactive phosphorus-based flame retardant, The isophthalic acid ester containing sulfonate group is the third monomer and the fourth monomer respectively, the titanate is used as the catalyst, the phosphorus compound is used as the stabilizer, and the alkali metal compound is used as the concomitant additive.

[0068] The general chemical formula of the reactive phosphorus flame retardant is as formula 1 or formula 2

[0069] Formula 1

[0070] R in formula 1 1 , R 2 Representative (CH 2 ) m, m is CH 2 The number of groups, the value of m is 1 to 10 (example 1, 2, 5, 10);

[0071] Formula 2

[0072] R in formula 2 3 Is C1-C6 alkyl (or C6-C9 aryl); R 4 Is C1-C6 alkyl; R 5 and R 6 It is a hydrogen group (or hydroxyalkylen...

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Abstract

The present invention discloses a flame-retardant cation dyeable polyester copolymer and the preparation method. The method includes esterification and condensation reactions and the reactions take terephthalic acid and ethylene alcohol as a first monomer and a second monomer, and reactive phosphorus flame retardant and m-phthalic acid ester with sulphonate respectively as a third monomer and a fourth monomer; metatitanic acid ester is catalyst, phosphorus compound is stabilizer and alkali metal compound is assistant additive. The fiber of the product provided by the present invention with excellent flame retardant and cation dyeability can ensure good processing ability and dynamic performance and apply the polyester to different spinning processes.

Description

technical field [0001] The invention relates to a functional polyester which not only has a good flame-retardant effect but also has the easy-dye property of cationic dyes and a preparation method thereof. Background technique [0002] Since polyethylene terephthalate (PET) has excellent mechanical and mechanical properties, its output has been rising all the way since modern times, and it has become the largest and most widely used fiber variety in the world. However, because PET has a regular molecular structure, is easy to crystallize, and has no easy-to-dye functional groups, although it can be dyed with disperse dyes under high temperature and pressure, the production conditions are harsh, the production cost is high, and the product color is not ideal. [0003] Related studies have also been carried out on the dyeability of cationic dyes. [0004] For example, in the mouth of the Japanese Patent Publication No. 34-10497, a kind of cationic dye dyeable polyester obtain...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/183C08G63/688C08K5/49D01F6/62D06P1/00
Inventor 赵宏鑫曹晓秀本田圭介
Owner TORAY IND INC
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