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Composition of terephthalic acid esters for polymer resin and method of manufacturing the same

A technology of terephthalate and terephthalic acid, which is applied in a contained field, can solve the problems that the performance of plasticizers needs to be improved, and achieve the effect of improving performance

Active Publication Date: 2012-06-20
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Some terephthalate compounds have been used as plasticizers, but their performance as plasticizers needs to be improved

Method used

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  • Composition of terephthalic acid esters for polymer resin and method of manufacturing the same
  • Composition of terephthalic acid esters for polymer resin and method of manufacturing the same
  • Composition of terephthalic acid esters for polymer resin and method of manufacturing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Into a 2-liter 4-neck round-bottom flask equipped with a stirrer and a condenser was added by mixing 1.806 mol of terephthalic acid, 3.611 mol of 2-ethylhexanol, 3.611 mol of isononanol and 0.0042 mol of tetraisotitanate. Propyl ester catalyst prepared reaction mixture, and then stirred evenly. The temperature was raised to 220° C., and then reacted under nitrogen for 9 hours. After the reaction is completed, unreacted substances are removed under reduced pressure at 150-220°C. The reaction mixture was then neutralized with 10% sodium hydroxide and washed with 10% sodium sulfate. The reaction mixture was dehydrated under reduced pressure and filtered to obtain an ester plasticizer composition. The composition ratio is as follows: 9.8mol% of 1,4-phthalic acid bis(2-ethylhexyl) ester, 54.2mol% of 1,4-phthalic acid-1-(2-ethylhexyl) - 4-(isononyl) ester, 36 mol% of diisononyl 1,4-phthalate.

Embodiment 2

[0076] In the 2 liters of 4 neck round bottom flasks that stirrer and condenser are equipped with, add by mixing 1.806mol terephthalic acid, 3.609mol 2-ethylhexanol and 3.611mol isononanol, and with embodiment 1 The following experiments were carried out in the same manner as described above. The composition ratio is as follows: 19.1mol% of 1,4-phthalic acid bis(2-ethylhexyl) ester, 50.9mol% of 1,4-phthalic acid-1-(2-ethylhexyl) - 4-(isononyl) ester, 30 mol% of 1,4-diisononyl phthalate.

Embodiment 3

[0078] An experiment was performed in the same manner as described in Example 1 except that a reaction mixture prepared by mixing 1.806 mol of terephthalic acid, 5.023 mol of 2-ethylhexyl ester, and 2.162 mol of isononanol was used. The component ratio of the composition is as follows: 37.6mol% of 1,4-phthalic acid bis(2-ethylhexyl) ester, 47.9mol% of 1,4-phthalic acid-1-(2-ethylhexyl) - 4-(isononyl) ester, 14.5 mol% of diisononyl 1,4-phthalate.

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Abstract

The present invention provides a terephthalic acid ester composition comprising at least three different terephthalic acid compounds. In this composition, at least one of those three different compounds has the terephthalic add with a different substituent and at least two of those compounds have the terephthalic acid with an identical substituent, the molar ratio of the compound having the terephthalic add with an identical substituent is 6-80 mol% for the total mol of the composition, and the molar ratio of the compound having the terephthalic add with a different substituent is 20-94 mol%.The composition of the present invention increases physical properties of polymer resin molded product including tensile strength, heating loss, elongation, age resistance and weatherability when it is added as a plastidzer during the processing of polyvinylchloride resin.

Description

technical field [0001] The present invention relates to a kind of terephthalate composition that can be used as plasticizer and preparation method thereof, more specifically, relate to a kind of terephthalate composition and preparation method thereof, and this composition is processed When added as a plasticizer in the process of polymer resin (especially polyvinyl chloride resin), it can improve the properties of polymer resin molded products, including tensile strength, heat loss, elongation, aging resistance and weather resistance sex. The present invention also relates to a polymer resin composition comprising such a plasticizer composition and a polymer resin. Background technique [0002] Polymer resins have been used in various fields to facilitate life, are molded by various processing methods, and are thus used to produce various daily commodities or industrial products. [0003] Specifically, polyvinyl chloride resin is the most common resin, which can be easily...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L31/08
CPCC08K5/12C07C69/82C07C67/08C08L67/02C08K2201/014C08L27/06C08L2666/14C08L101/00C08L2203/00C08L2203/16C08L2666/66
Inventor 田炳圭李启锡罗相业洪七仪李揆一孔东华金在求金玉善金美映
Owner LG CHEM LTD