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Cationic dyeable polyester and application thereof

A cationic dye and polyester technology, applied in the direction of conjugated synthetic polymer artificial filament, etc., can solve the problems of low physical properties of polyester masterbatch and polyester, low production efficiency of dyeable polyester, etc., and achieve low production cost, Excellent dyeing performance and high flexibility of production equipment

Inactive Publication Date: 2012-02-01
TORAY FIBER RES INST(CHINA) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the low production efficiency of polyester dyeable with cationic dyes, reduce production costs, maximize the use of existing equipment, and endow polyester fibers with excellent physical properties, the present invention, through in-depth research, uses cationic dyes containing sulfur elements to dye The polyester masterbatch and the base polyester are prepared by melting and mixing in a device with a mixer, wherein the cationic dyeable polyester masterbatch also contains 0.2 to 10% by weight relative to the weight of the masterbatch and a compatible compound with a molecular weight of less than 5000 agent, through this technology to solve the problem of low physical properties after mixing polyester masterbatch and polyester

Method used

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  • Cationic dyeable polyester and application thereof
  • Cationic dyeable polyester and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Take 13.9 parts by weight of dimethyl terephthalate, 10.4 parts by weight of ethylene glycol and 1.2 parts by weight of dimethyl isophthalate-5-sodium sulfonate, add them to the reaction kettle with heating and stirring, and then add After 0.3% by weight of manganese acetate and 2.4% by weight of lithium acetate relative to the polyester, the temperature is gradually raised to carry out the transesterification reaction, and methanol is gradually distilled out. When the distilled methanol amount reaches more than 95% of the theoretical amount, the transesterification reaction is completed. , move the reaction product to a polymerization kettle, add 0.45 parts by weight of polyethylene glycol with a molecular weight of 1000, and add phosphorus compound trimethyl phosphate, antioxidant IR1010, antifoaming agent silicone oil, etc., and then gradually heat up to 280-290 degree, and reduce the pressure to below 100Pa for 1 to 3 hours to react for 1 to 3 hours. After reaching t...

Embodiment 2

[0033] During the preparation of cationic dye-dyeable polyester masterbatch, the content of sulfur element in the polyester masterbatch was increased to 1.5wt% by changing the amount of dimethyl isophthalate-5-sodium sulfonate, and polyethylene was no longer added. Diol, but add 3wt% sodium dodecylbenzene sulfonate as a compatibilizer, in the process of blending the polyester masterbatch and the matrix polyester, the ratio of the polyester masterbatch to the matrix polyester is 1 : 4 to carry out, other steps are with embodiment 1.

Embodiment 3

[0035] During the preparation of cationic dye-dyeable polyester masterbatch, the content of sulfur element in the polyester masterbatch was increased to 1.2wt% by changing the amount of dimethyl isophthalate-5-sodium sulfonate, and polyethylene Glycol, but add the sodium dodecylbenzenesulfonate of 2.8wt% as compatibilizer, in the process that polyester masterbatch and matrix polyester are blended, the ratio of masterbatch and matrix polyester is 1: 3, other steps are the same as in Example 1.

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Abstract

The invention discloses a cationic dyeable polyester and application thereof. The cationic dyeable polyester is prepared by melting and mixing a cationic dyeable polyester masterbatch having a sulfur element content of 0.6-3% and a matrix polyester in a device with a mixer, wherein the cationic dyeable polyester masterbatch contains 0.2-10 wt% of compatilizer of which the molecular weight is less than 5000.The polyester disclosed by the invention has the advantages of excellent cationic dyeability, excellent physical property, simple manufacturing method, wide applicable device range and low production cost.

Description

technical field [0001] The invention relates to a cationic dye-dyeable polyester and its use for preparing fibers. Background technique [0002] Polyethylene terephthalate in polyester has outstanding properties and is widely used in the fields of fibers and films, especially in the fields of clothing and industrial materials. [0003] There are many dyeing methods for polyester fibers according to different uses, but ordinary polyester fibers are difficult to be dyed due to their molecular structure. When dyeing with disperse dyes, a high temperature of 130°C is required, and it is even more difficult for cationic dyes. [0004] The topic of improving the dyeing performance of polyester fibers, especially endowing polyester fibers with cationic dyeability, has been studied for a long time. Among them, improving polymer properties through copolymerization technology is one of the main means. For example: Japanese Patent Application Laid-Open No. 57-57054, by adding ethylen...

Claims

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Application Information

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IPC IPC(8): C08L67/02D01F8/14C08G63/688
Inventor 李旭柏立军望月克彦
Owner TORAY FIBER RES INST(CHINA) CO LTD
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