Polyester composition and polyester film

A composition and polyester technology, applied in the field of oriented polyester film, can solve the problems of long polymerization time, reduced catalyst activity, black appearance of polyester, etc., and achieve the effect of superior optical properties and good dispersibility

Active Publication Date: 2010-08-18
TOYO TOYOBO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Antimony trioxide is an inexpensive polycondensation catalyst having excellent catalytic activity, but when it is used as the main component, that is, in an amount sufficient to exhibit a practical polymerization rate, metal antimony is precipitated during polycondensation, and the polyester The appearance is black, so it is not preferred
However, if th

Method used

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  • Polyester composition and polyester film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0121] (1) Preparation of polycondensation catalyst solution

[0122] (Preparation of aqueous solution of aluminum compound)

[0123] At normal temperature and normal pressure, 5.0 liters of pure water was added to a beaker equipped with a cooling tube, and then, while stirring at 200 rpm, 200 g of basic aluminum acetate was added as a slurry with pure water. Furthermore, pure water was added so that it might become 10.0 liters as a whole, and it stirred for 12 hours at normal temperature and normal pressure. Then, the jacket temperature was changed to 100.5° C. to raise the temperature, and the mixture was stirred under reflux for 3 hours from the time when the internal temperature became 95° C. or higher. Stirring was stopped and cooled to room temperature to obtain an aqueous solution.

[0124] (Preparation of ethylene glycol mixed solution of aluminum compound)

[0125] Add an equal volume of ethylene glycol to the aluminum compound aqueous solution obtained by the abov...

Embodiment 2

[0136] In the polymerization method of Example 1, the addition amount of the aluminum compound and the lithium compound is set to 0.005 mol% and 0.010 mol% of the aluminum atom and the lithium atom relative to the acid component in the polyester. The same method of example 1, obtained the polyester of IV0.58. The characteristic values ​​of the obtained polyesters are shown in Table 1. The content of silica particles in the obtained polyester was 0.20% by weight, and the number of coarse particles of 10 μm or more was 370 / mm 2 . The obtained polyester sheet was formed into a film by the same method as in Example 1 to obtain a polyester film. The properties of the obtained films are shown in Table 1.

Embodiment 3

[0138] In the polymerization method of Example 1, the addition amount of the aluminum compound and the lithium compound is set to 0.005 mol% and 0.100 mol% of the aluminum atom and the lithium atom relative to the acid component in the polyester. The same method of example 1, obtained the polyester of IV0.62. The characteristic values ​​of the obtained polyesters are shown in Table 1. The content of silica particles in the obtained polyester was 0.20% by weight, and the number of coarse particles of 10 μm or more was 120 / mm 2 . The obtained polyester sheet was formed into a film by the same method as in Example 1 to obtain a polyester film. The properties of the obtained films are shown in Table 1.

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Abstract

The invention provides a polyester, which is produced by using a novel polyester polycondensation catalyst without the previous polycondensation catalyst such as an antimony compound, a germanium compound and the like as a main component, has sufficient degree of polymerization and thermal stability, and prevent the coagulation of inorganic particles, after the polyester is used for a polyester film, the obstruction of a filter is less, the smooth performance or traveling performance and the abrasion resistance are excellent, the quality reduction caused by the defect or foreign body on the film is less. The polyester composition is obtained by the polymerization in the presence of the polycondensation catalyst containing aluminium compound and lithium compound, wherein, the polyester composition contains 0.02 to 1.0 wt% of inertia inorganic particles with the average particle size of 0.5 to 3.0 mum, the amount of the coarse particles with the particle size of 10 mum is below 1000/mm<2>.

Description

technical field [0001] The present invention relates to a polyester composition polymerized using a novel polyester polycondensation catalyst and an oriented polyester film using it as a main constituent, and more specifically relates to using a novel aluminum-based polycondensation catalyst for polymerization without using germanium and antimony compounds as catalyst main components The polyester composition and the oriented polyester film mainly composed of it. Background technique [0002] Polyesters represented by polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyethylene naphthalate (PEN), etc., have mechanical properties and chemical It has excellent properties and is widely used in various fields such as fibers for clothing or industrial materials, various films or sheets for packaging or industrial use, molded products such as bottles and engineering plastics, etc., depending on the properties of each polyester. [0003] Polyesters mainly compo...

Claims

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Application Information

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IPC IPC(8): C08L67/00C08K3/22C08K3/34C08K3/36C08K3/26C08K3/30C08G63/84C08G63/83
CPCC08G63/83C08J5/18C08K7/18C08K2201/003C08L2203/16
Inventor 大桥英人松本治男前田邦浩野濑克彦
Owner TOYO TOYOBO CO LTD
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