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Cationic dyeable polyester composition

A composition and cationic technology, applied in the field of polyester composition, can solve the problems of rising filter pressure, high initial pressure of spinning, reducing initial pressure of melt spinning, etc., and achieve the effect of suppressing the rise of filter pressure

Active Publication Date: 2017-05-10
TORAY FIBER RES INST(CHINA) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the surfactant used also becomes the cause of the increase in filtration pressure, so further improvement is required
In addition, the high pressure at the initial stage of spinning caused by the viscosity increase of the isophthalic acid component containing sulfonate groups is still a problem.
[0009] In summary, the background art does not disclose a cationic dyeable polyester composition that can both reduce the initial pressure during melt spinning and suppress the rise in filter pressure during melt spinning.

Method used

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  • Cationic dyeable polyester composition
  • Cationic dyeable polyester composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] In the esterification reaction tank with 1750 kg of diethylene glycol terephthalate oligomers, after adding 700 ppm of EAH20 relative to the oligomers, ethylene glycol with a molar ratio of 1.15 and para The slurry of phthalic acid is continuously removed through the rectification tower to remove the water generated in the esterification reaction. Keep the temperature of the reactor at 245°C to make the esterification reaction rate reach 98%. Then, a compound in which both ends of isophthalic acid-5-sodium sulfonate are replaced with ethylene glycol (hereinafter referred to as diethylene glycol isophthalate-5-sodium sulfonate) (with respect to the obtained polyester, Its content is 1.8mol% content) and lithium acetate dihydrate (relative to the obtained polyester, its content is 0.3mol%), and sodium dodecylbenzenesulfonate (DBS) (relative to the obtained polyester, Its content is 0.06mol%), mixed for 30 minutes in advance, added the above-mentioned mixture within about...

Embodiment 2～13

[0081] Except for the conditions described in Table 1, the production and spinning evaluation of polyester were performed in the same manner as in Example 1. As shown in Table 1, the quality of the polyester composition was good, and good results were obtained in the spinning evaluation.

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Abstract

The invention provides a cationic dyeable polyester composition which is a polyester formed by ethylene glycol terephthalate as a main repetitive unit. The polyester comprises of m-phthalic components containing sulphonates accounting for 1.0-3.0 mol% of all binary acid components, polyethylene glycol accounting for 0.5-2.0 wt% of the polyester composition and a surfactant accounting for 0.03-0.6 mol% of the polyester composition. By means of the cationic dyeable polyester composition in melt spinning, an early-stage pressure during the melt spinning can be reduced and increase of a filtering pressure can be inhibited. Fibers having an excellent cationically dyeable performance can be manufactured.

Description

technical field [0001] The invention relates to a polyester composition with excellent cationic dyeability by reducing the initial pressure during melt spinning and suppressing the rise of filtration pressure through the visbreaking effect of the polymer composition. Background technique [0002] Polyester, especially polyester with polyethylene terephthalate as the main component, is widely used in clothing, industrial fibers, tapes, and surface coatings due to its excellent mechanical properties and chemical properties. film, and industrial fields such as tire meridian and network cable. [0003] When used as a clothing fiber, in order to improve the dyeability of polyester, isophthalic acid components containing sulfonate groups represented by sodium isophthalic acid-5-sulfonate are used as comonomers. Copolymerization modified polyester, or the use of isophthalic acid components containing sulfonate groups and polyethylene glycol for copolymerization modification, these...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/695C08G63/692C08G63/688C08G63/672D01F6/84
Inventor 李旭望月克彦小松弘和松见大介
Owner TORAY FIBER RES INST(CHINA) CO LTD
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