A kind of preparation method of polyester for high brightness flame retardant polyester 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: 2018-08-24
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent does not have flame retardant properties

Method used

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  • A kind of preparation method of polyester for high brightness flame retardant polyester film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0023] Add 5.0kg PTA, 3kgEG, 2.0g antimony acetate, 5.8g of the above barium sulfate-ethylene glycol suspension to a 20L general polymerization reactor, and carry out the esterification reaction at 235℃ and 0.2Mpa (gauge pressure). When it reaches 1200ml, release the pressure to normal pressure, add the above-mentioned 260g phenylphosphoric acid-glycol mixture, stir at normal pressure for 10 minutes, increase the temperature and reduce 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 po...

Embodiment 2

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

[0027] Add 5.0kg PTA, 3kgEG, 1.662g ethylene glycol antimony, 11.6g of the above barium sulfate-ethylene glycol suspension into a 20L general polymerization reactor, and carry out the esterification reaction at 250℃ and 0.3Mpa (gauge pressure). When the water output reaches 1200ml, release the pressure to normal pressure, add 347g of the above hydroxymethylphenylphosphinic acid glycol mixture, stir at normal pressure for 10 minutes, increase the temperature and reduce the pressure to 280°C and below 100Pa, and react for 2 hours. After the reaction is completed, it is extruded by a melt pump, pelletized, and dried at 85°C to obtain high-brigh...

Embodiment 3

[0030] Add 400ml of glass beads, 320g of barium sulfate, and 480g of ethylene glycol in 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 400 g of 2-carboxyethyl phenyl hypophosphorous acid and 400 g of ethylene glycol into the beaker, heat to 100° C. and mix uniformly.

[0031] Add 5.0kg PTA, 3kgEG, 0.925g germanium oxide, 43.4g of the above barium sulfate-ethylene glycol suspension to a 20L general polymerization reactor, and carry out the esterification reaction at 265℃ and 0.25Mpa (gauge pressure). When it reaches 1200ml, release the pressure to normal pressure, add 694g of the above-mentioned 2-carboxyethylphenyl hypophosphorous acid-ethylene glycol mixture, stir at normal pressure for 10 minutes, increase and decrease 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 at 85°C to ...

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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 polymers, and specifically relates to a preparation method of polyester for high-brightness flame-retardant polyester film. Background technique [0002] Biaxially oriented polyester film (BOPET) is a green, environmentally friendly, polymer film material with excellent comprehensive performance. It has high mechanical strength, good rigidity, strong toughness, excellent electrical insulation, transparency, high gloss, and non-toxic , Odorless, tasteless, and tear-resistant. The main application areas of BOPET film are: packaging, printing, magnetic recording, photosensitive, office, insulation, card protection, construction, decoration, etc. In recent years, it has been further applied to high-precision technical 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 transparency, low h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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