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Polyester master particle for high-penetration high-brightness film and preparation method thereof

A polyester masterbatch and bright film technology, which is applied in the field of polyester materials, can solve the problems of film optical performance deterioration, poor controllability, and reduce haze, so as to avoid large deviations in refractive index, improve light transmission performance, and improve Dispersion effect

Active Publication Date: 2011-06-29
ZHEJIANG GUXIANDAO POLYESTER DOPE DYED YARN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, in the patent disclosed by the patent number CN1482174A, by adding silicon dioxide anti-blocking agents of different particle sizes in the upper and lower surface layers of BOPET film production, the amount of anti-blocking agents can be reduced from the total amount to reduce the haze. The nano-silica is easy to agglomerate in an acidic reaction environment, it is difficult to achieve uniformity in dispersion, and there are uneven optical properties
Another kind of patent No. is that US5132356 discloses the linear polyester film that contains glass beads and the silicon dioxide of gas phase method, the addition of additive improves the coefficient of dynamic friction and the coefficient of static friction of the film, but the haze of this film is larger and contains certain Speckle degrades the optical properties of the film

Method used

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  • Polyester master particle for high-penetration high-brightness film and preparation method thereof
  • Polyester master particle for high-penetration high-brightness film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] combine figure 1 The preparation method of the polyester master batch for the high-transparency and high-brightness film of the present invention comprises the following steps:

[0023] 1. Preparation of Sachtoperse AB / ethylene glycol dispersion

[0024] Put 150kg of ethylene glycol and 150kg of anti-blocking agent into the configuration tank with stirring, stir evenly, and then disperse in the high-shear dispersion tank for 30 minutes to 1 hour. According to the specifications of Sachtoperse AB, the particle size is φ1. Grind with 8mm and φ2.2mm grinding beads for 1 to 3 hours, and test the transmittance of 300 mesh and 5 micron respectively after static treatment to maintain the uniformity of the particles. After the test transmittance is qualified, adjust the solution concentration to 10~ 20% dispersion, stand for 4 to 8 hours for later use, in order to facilitate its dispersion in polyester melt. Test the dispersion liquid permeability every 24 hours to ensure the...

Embodiment 2

[0028] The preparation of Sachtoperse AB / ethylene glycol dispersion is the same as in Example 1, the difference is that the film is prepared with polyester masterbatch:

[0029] Put ethylene glycol EG, phthalic acid PTA or IPA in a molar ratio of 1 to 1.3, add catalyst, heat stabilizer, and electrostatic adsorbent to mix into a slurry, and carry out esterification reaction under the action of 230 to 260°C Ethylene glycol phthalate BHET melt; In the ethylene glycol phthalate BHET melt, add 8000ppm of BHET content successively, the Sachtoperse AB (the Sachtoperse AB / ethylene glycol of 18% of 3.2 μm of average particle size Dispersions). Pre-condensation reaction is carried out at a temperature of 230-290°C and a pressure of 50-1000Pa for 1.5-2 hours, and then the final polycondensation reaction is carried out at a temperature below 60Pa for 60-100 minutes. When the melt viscosity is 0.66 as measured by an online viscometer, it is discharged and pelletized .

Embodiment 3

[0031] The preparation of Sachtoperse AB / ethylene glycol dispersion is the same as in Example 1, the difference is that the film is prepared with polyester masterbatch:

[0032] Put ethylene glycol EG, phthalic acid PTA or IPA in a molar ratio of 1 to 1.3, add catalyst, heat stabilizer, and electrostatic adsorbent to mix into a slurry, and carry out esterification reaction under the action of 230 to 260°C Ethylene glycol phthalate BHET melt; In the ethylene glycol phthalate BHET melt, add 20000ppm of BHET content successively, the Sachtoperse AB (the Sachtoperse AB / ethylene glycol of 20% of 4.4 μm of average particle size Dispersions). Pre-condensation reaction is carried out at a temperature of 230-290°C and a pressure of 50-1000Pa for 1.5-2 hours, and then the final polycondensation reaction is carried out at a temperature below 60Pa for 60-100 minutes. When the melt viscosity is 0.66 as measured by an online viscometer, it is discharged and pelletized .

[0033] The three-l...

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Abstract

The invention discloses a polyester master particle for a high-penetration high-brightness film and a preparation method thereof. The polyester master particle for a high-penetration high-brightness film belongs to the technical field of preparation of BOPET films. The preparation method comprises the following steps: uniformly stirring Sachtoperses AB and EG according to the weight ratio of (1-1.2):1 and preparing dispersing liquid for standby; sequentially adding the dispersing liquid with the mass ratio of the Sachtoperse AB and BHET of 100-30,000 ppm in BHET fusant, carrying out prepolymerization and final polycondensation reaction, discharging and pelletizing. The invention prevents a clearance between the Sachtoperse AB and PET and the haze increase by selecting the Sachtoperse AB of which the refractive index is closer to that of the PET as an opening agent to replace silicon dioxide having larger deviation with the refractive index of the PET, thereby improving the transparence of the film.

Description

technical field [0001] The invention relates to a polyester material, more specifically to a polyester masterbatch for a high-transparency and high-brightness film and a preparation method thereof. Using this patented polyester masterbatch for high-transparency and high-brightness films, BOPET films with high transparency, high brightness and low haze can be produced by using ordinary BOPET film drawing equipment. Background technique [0002] BOPET film is polyethylene terephthalate biaxially oriented film, which has the characteristics of high strength, good rigidity, transparency and high gloss; it is odorless, tasteless, colorless, non-toxic, and has outstanding strength and toughness; its tensile The strength is 3 times that of PC film and nylon film, and the impact strength is 3-5 times that of BOPP film. It has excellent wear resistance, folding resistance, pinhole resistance and tear resistance, etc.; heat shrinkage is extremely small , at 120°C, only shrinks by 1.2...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08K9/00C08G63/183C08G63/78
Inventor 刘雄王祖宏金革
Owner ZHEJIANG GUXIANDAO POLYESTER DOPE DYED YARN CO LTD