Trimethylolpropane ester-based plasticizer composition for polyvinyl chloride resin
A technology of trimethylolpropane ester and trimethylolpropane, which is applied in the field of trimethylolpropane ester-based plasticizer compositions, and can solve the problems of poor physical properties and weak chemical bonds of trimethylolpropane ester
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Embodiment 1
[0027] Next, the present invention will be described in more detail by the following examples and comparative examples. However, the following examples are only for the understanding of the present invention, and the present invention is not limited by the following examples. Embodiment 1 (preparation of plasticizer composition containing trimethylolpropane ester)
[0028] 268.36 grams of trimethylolpropane, 576.84 grams of 2-ethylhexanoic acid, 366.39 grams of benzoic acid, 50 grams of xylene as an entrainer substance, and 2.83 grams of tetraisopropyl titanate as a catalyst were added to a 2 In a 4-neck round bottom flask equipped with a stirrer and a condenser, the reaction was carried out for 10 hours by raising the temperature of the mixture to 220°C.
[0029] After the reaction, use a vacuum pump to evacuate the flask to 2mmHg at 200°C, remove unreacted acid, and neutralize the contents of the flask with 5% by weight of sodium hydroxide, wash and dry, and then add absorb...
Embodiment 2
[0042] Trimethylolpropane esters and samples were prepared by the same method as in Example 1, except that the raw materials and quantities are shown in Table 1 below, and the results of measuring the esters for physical properties are shown in Table 2 below.
[0043] The composition ratio of the ester mixture is 25.65% by weight of trimethylolpropane tri-2-ethylhexanoate, 44.72% by weight of 2,2-bis-2-ethylhexanoylmethoxybutyl benzoate, 24.05% by weight of 2,2-bis-benzoylmethoxybutyl 2-ethylhexanoate, 3.47% by weight trimethylolpropane tribenzoate, and 2.11% by weight other ingredients.
Embodiment 3
[0045] Trimethylolpropane esters and samples were prepared by the same method as in Example 1, except that the raw materials and quantities are shown in Table 1 below, and the results of measuring the esters for physical properties are shown in Table 2 below.
[0046] The composition ratio of the ester mixture is 34.51% by weight trimethylolpropane tri-2-ethylhexanoate, 44.56% by weight 2,2-bis 2-ethylhexanoyl methoxybutyl benzoate, 17.52% by weight 2,2-bis-benzoylmethoxybutyl 2-ethylhexanoate, 1.38% by weight of trimethylolpropane tribenzoate, and 2.03% by weight of other ingredients.
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