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Fluorine-containing copolyester for optics, optical film, and manufacturing method thereof

A technology of optical film and copolyester, which is applied in the field of polyester synthesis, can solve problems such as inability to adapt to biaxial stretching production, achieve excellent thermal oxidation resistance and heat resistance, good dimensional stability, and increase light transmittance Effect

Active Publication Date: 2016-08-24
江苏源源山富数码喷绘科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large number of rigid groups in the segment structure of this type of polyarylate, it can only be cast into a film, and cannot adapt to modern industrial biaxial stretching production.
[0013] However, there is no report that the copolyester containing bisphenol AF structure is used in the field of flexible optical films

Method used

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  • Fluorine-containing copolyester for optics, optical film, and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: add 199.005 parts by weight of terephthalic acid, 0.995 parts by weight of isophthalic acid (n 对苯二甲酸 :n 间苯二甲酸 =1:0.005), ethylene glycol 95 parts by weight, bisphenol AF 5 parts by weight (n 二元醇 :n 二元酸 =1:1.28) and ethylene glycol antimony which accounts for 4 / 10,000 parts by weight of the total acid content, stir evenly, vacuumize nitrogen to remove oxygen, and then esterify at 250-350KPa, 220-270°C for 2 hours, then Reduce the pressure to normal pressure, add trimethyl phosphate accounting for 0.5% of the total acid content through the feeding port, and then reduce the pressure to -90KPa within 40~60min for precondensation, when the pressure is less than -103Kpa, the temperature is 260-280 Polycondensation at ℃ for 2-4 hours to obtain fluorine-containing optical copolyester. The copolyester is filtered through a stainless steel filter (10μm impurity filtration efficiency is greater than 99%) by nitrogen gas, then pressed out, cooled with deionized wat...

Embodiment 2

[0033] Embodiment 2: Add 199.005 parts by weight of terephthalic acid and 0.995 parts by weight of isophthalic acid in the polyester synthesis device, n 对苯二甲酸 : n 间苯二甲酸 =1:0.005, 90 parts by weight of ethylene glycol, 10 parts by weight of bisphenol AF (n 二元醇 :n 二元酸 =1:1.23) and ethylene glycol antimony accounting for 4 / 10,000 parts by weight of the total acid content, stir evenly, vacuumize nitrogen to remove oxygen, then esterify at 350KPa, 260°C for 2 hours, and then reduce the pressure to normal Pressure, add trimethyl phosphate accounting for 0.5% of the total acid content through the feeding port, and then reduce the pressure to -90KPa within 40~60min for pre-condensation, polycondensation under the conditions of pressure less than -103Kpa and temperature 270°C for 3 hours to obtain fluorine-containing optical copolyester. The copolyester is filtered through a stainless steel filter (10μm impurity filtration efficiency is greater than 99%) by nitrogen gas, then presse...

Embodiment 3

[0035] Embodiment 3: change copolyester monomer type and ratio, add terephthalic acid 198.474 parts by weight, 2,6-naphthalene dicarboxylic acid 1.526 parts by weight (n 对苯二甲酸 :n 2，6-萘二甲酸 =1:0.01), ethylene glycol 104 parts by weight, bisphenol AF 5 parts by weight (n 二元醇 :n 二元酸 =1:1.40), except that it was the same as in Example 1 to obtain a fluorine-containing copolyester and a fluorine-containing copolyester optical film. The test results of the obtained fluorine-containing copolyester optical film are shown in Table 1.

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Abstract

The invention discloses optical fluorine-containing copolyester, an optical film and a production method thereof. According to the invention, diacid, dihydric alcohol and bisphenol AF with certain proportion are used as monomer to prepare the optical fluorine-containing copolyester, then the optical fluorine-containing copolyester is prepared to the copolyester film through bidirectional stretching, the film has good optical performance, excellent heat-resistance and aging-resistance performance, high tensile strength, and excellent size; and can be widely used for fields of optical film and photovoltaic backboard.

Description

technical field [0001] The invention relates to the field of polyester synthesis, in particular to an optical fluorine-containing copolyester, an optical film and a manufacturing method thereof. Background technique [0002] Polyethylene terephthalate (PET), which is synthesized from terephthalic acid and ethylene glycol as polymerized monomers, is currently the largest synthetic polyester material in the world. PET films are widely used in food packaging, decorative materials, Labels, liquid crystal displays and other fields. Poly(ethylene terephthalate-isophthalate-glycol) ester produced by introducing the third component isophthalic acid has good crystallization properties and is widely used in the fields of blow-molded polyester bottles and the like. However, the ester group in the macromolecular structure of PET makes it hydrophilic to a certain extent, and its application is limited in the case where hydrophobicity is required. Moreover, due to the influence of PET's...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/682C08G63/78
Inventor 白永平张福臣魏群黄玉东
Owner 江苏源源山富数码喷绘科技有限公司