Preparation method of polyester for highlight flame-retardant polyester thin film

A technology of flame-retardant polyester and polyester, which is applied in the field of polymers and can solve problems such as not having flame-retardant properties

Active Publication Date: 2014-07-30
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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  • Preparation method of polyester for highlight flame-retardant polyester thin film

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Embodiment 1

[0022]Add 400ml glass beads, 160g barium sulfate, and 640g ethylene glycol in a sand mill, and grind for 0.5 hour to prepare barium sulfate-ethylene glycol suspension, wherein the average particle size of barium sulfate is 1.0 μm. Add 100 g of phenylphosphoric acid and 200 g of ethylene glycol into a beaker, heat to 100°C and mix well.

[0023] Add 5.0kg PTA, 3kgEG, 2.0g antimony acetate, 5.8g of the above-mentioned barium sulfate-ethylene glycol suspension into a 20L general-purpose polymerization reactor, and carry out esterification reaction at 235°C and 0.2Mpa (gauge pressure). When it reaches 1200ml, release the pressure to normal pressure, add the above 260g phenylphosphoric acid-ethylene glycol mixture, stir at normal pressure for 10 minutes, raise the temperature and lower the pressure to 280°C and below 100Pa, and react for 3 hours. After the reaction is completed, it is extruded by a melt pump, pelletized, and dried at 85°C to obtain high-brightness flame-retardant p...

Embodiment 2

[0026] Add 400ml of glass beads, 400g of barium sulfate, and 400g of ethylene glycol into a sand mill, and grind for 1 hour to prepare a barium sulfate-ethylene glycol suspension. The average particle size of barium sulfate is 1.5 μm. Add 200g of hydroxymethylphenylphosphinic acid and 200g of ethylene glycol into a beaker, heat to 100°C and mix well.

[0027] Add 5.0kg PTA, 3kgEG, 1.662g ethylene glycol antimony, 11.6g of the above-mentioned barium sulfate-ethylene glycol suspension in a 20L general-purpose polymerization reactor, and carry out esterification reaction at 250°C and 0.3Mpa (gauge pressure). When the water output reaches 1200ml, release the pressure to normal pressure, add 347g of the above-mentioned hydroxymethylphenylphosphinic acid ethylene glycol mixture, stir at normal pressure for 10 minutes, raise the temperature and lower the temperature to below 100Pa, and react for 2 hours. After the reaction is completed, it is extruded by a melt pump, pelletized, and ...

Embodiment 3

[0030] Add 400ml of glass beads, 320g of barium sulfate, and 480g of ethylene glycol into a sand mill, and grind for 1 hour to prepare a barium sulfate-ethylene glycol suspension. The average particle size of barium sulfate is 3.5 μm. Add 400g of 2-carboxyethylphenylphosphinic acid and 400g of ethylene glycol into a beaker, heat to 100°C and mix well.

[0031] Add 5.0kg PTA, 3kgEG, 0.925g germanium oxide, and 43.4g of the above-mentioned barium sulfate-ethylene glycol suspension into a 20L general-purpose polymerization reactor, and carry out esterification reaction at 265°C and 0.25Mpa (gauge pressure). When it reaches 1200ml, release the pressure to normal pressure, add 694g of the above-mentioned 2-carboxyethylphenylphosphinic acid-ethylene glycol mixture, stir at normal pressure for 10 minutes, raise the temperature and lower the pressure to 280°C and below 100Pa, and react for 1.5 hours. After the reaction is completed, it is extruded by a melt pump, pelletized, and dried...

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Abstract

The invention discloses a preparation method of polyester for a highlight flame-retardant polyester thin film, and the highlight flame-retardant polyester thin film prepared by using polyester. Polyester for the highlight flame-retardant polyester thin film is prepared by selecting and adding appropriate flame retardants and additives in the polymerization process of synthesizing polyester by virtue of direct esterification of PTA (purified terephthalic acid). Polyester can be added as a master batch, or can be directly used for preparing thin films without adding other anti-binding agents; compared with a conventional similar polyester thin film, the thin film prepared from polyester disclosed by the invention has relatively low haze and relatively good flame retardant properties and anti-binding properties.

Description

technical field [0001] The invention belongs to the field of macromolecules, and in particular relates to a method for preparing polyester for high-brightness flame-retardant polyester films. Background technique [0002] Biaxially oriented polyester film (BOPET) is a green, environmentally friendly, and comprehensive performance polymer film material. It has high mechanical strength, good rigidity, strong toughness, excellent electrical insulation performance, transparency, high gloss, and non-toxic , Odorless, tasteless, and tear-resistant characteristics. The main application fields of BOPET film are: packaging, printing, magnetic recording, photosensitive, office, insulation, card protection, construction, decoration and so on. In recent years, it has been further used in high-tech fields such as aerospace, optics, solar energy, electronics, and electrical engineering. Some BOPET films used in packaging, decoration, construction, optics and other fields require good tr...

Claims

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Application Information

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IPC IPC(8): C08G63/183C08G63/78C08K3/26C08K3/30C08K5/5313C08K5/5317
Inventor 王树霞戴钧明王玉合司虎
Owner CHINA PETROLEUM & CHEM CORP
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