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Metod and apparatus for continuously producing clouring polyester

A polymerization equipment and polyester technology, applied in the field of colored polyester manufacturing, can solve the problems of numerous procedures, environmental pollution, high cost, etc., and achieve the effects of uniform dispersion, easy operation and low production cost.

Inactive Publication Date: 2007-08-29
TORAY FIBER RES INST(CHINA) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sending the polyester in solid form to the blend production site requires the polyester to be cooled in the production unit and then optionally pelletized to achieve solidification. This commonly used traditional method brings the following disadvantages: cooling, solidification, pelletizing, Costly and cumbersome steps such as storage, transport and melting
Dyeing after spinning is very serious to environmental pollution and easy to fade

Method used

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  • Metod and apparatus for continuously producing clouring polyester

Examples

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Effect test

Embodiment 1

[0018] Use terephthalic acid and ethylene glycol as raw materials to carry out esterification reaction at 200-260°C, and then carry out recondensation reaction at 280-300°C under a vacuum lower than 300Pa to continuously produce poly(p-phenylene) with a viscosity of 0.655 Ethylene glycol diformate (abbreviated as: PET) melt. The polyethylene terephthalate melt in the continuous polymerization equipment 1 is input through the main pipeline 2 at a speed of 1000kg / h at a temperature of 220-320°C (for example, 220°C, 240°C, 280°C, 320°C). Co-mixing device 3, while branch pipe 4 inputs polyethylene terephthalate into screw kneader 5, and the supply rate is 5kg / h; cyan dye powder (functional particle) (or iron oxide red, medium chrome yellow , titanium dioxide or cobalt black, phthalocyanine green, toluidine purple dye) first add the dispersant polyethylene glycol (or trimethylolethane, metal stearate, polyvinylpyrrolidone, aluminum-titanium composite coupling agent) Pulverize and ...

Embodiment 2

[0019] Embodiment 2: preparation technology is the same as embodiment 1, and difference is that polyester feed rate and pigment consumption are different (see table 1) in the branch pipe, and the amount that contains cyan dye in the colored polyester of production is 4wt%.

Embodiment 3

[0020] Embodiment 3: preparation technology is the same as embodiment 1, and difference is that polyester feed rate and pigment consumption are different (see table 1) in the branch pipe, and the about 12wt% that contains the amount of cyan dye in the colored polyester of production

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Abstract

The invention discloses a method and device to continuously produce pigmented polyester that includes the following steps: polyester melt passing through main pipeline inputting commixing device; taking crashing and decentralizing process to organic or inorganic powder with auxiliary agent in jet mill; taking commixing process to gain the non-dropping fire resistance property polyester. The invention has the advantages of simple method, reasonable device structure, easy to operate, stable species, low cost, etc.

Description

Technical field: [0001] The invention relates to a method for producing colored polyester. Background technique: [0002] It is known that in order to obtain colored polyester with high added value, people have adopted polyester blending technology or post-spinning dyeing. In the existing technology for producing polyester blends, polyester is sent to the site of producing blends in solid form. The production of the polyester prior to said feeding generally takes place at a remote location from the blend production site and involves chemically bonding the monomeric building blocks into one body. Sending the polyester in solid form to the blend production site requires the polyester to be cooled in the production unit and then optionally pelletized to achieve solidification. This commonly used traditional method brings the following disadvantages: cooling, solidification, pelletizing, Said steps of storage, transport and melting are costly and complicated. Moreover, the re...

Claims

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Application Information

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IPC IPC(8): C08L67/03C08K5/18B29B7/00C08K3/00C08K5/09
Inventor 叶红梅李旭本田圭介
Owner TORAY FIBER RES INST(CHINA) CO LTD
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