Additive for polymer, preparing method of additive and polymer composition composed of additive
A technology of additives and polymers, which is applied in the field of additives and can solve problems affecting normal use
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Embodiment 1
[0114] Select dibutyltin oxide as catalyst, catalyst and reaction raw material 3,5-di-tert-butyl-4-hydroxyphenylpropionate methyl ester (commercially available) and pentaerythritol (commercially available) are added in the reactor, wherein 3,5 - 380g of methyl di-tert-butyl-4-hydroxyphenylpropionate, 42g of pentaerythritol, the molar ratio of the two is about 4.2, the amount of catalyst is 0.3g, the pressure of the reactor is adjusted to 650Pa, and the temperature is raised to The reaction was continued at 200°C for 1 hour, and the temperature was lowered to 145°C for half an hour of neutralization reaction. The obtained product selects methanol as the crystallization solvent, and the target product can be obtained by cooling, crystallization and suction filtration.
Embodiment 2-8
[0115] Embodiment 2-8, comparative example 1-3
[0116] The compounds prepared in Example 1 were compounded with phosphorus-containing substances, and by adjusting the weight of the product in Example 1 in the polymer additive A, the polymer additive C with a specific phosphorus content was obtained. The specific compounding method is as follows: first compound the compound prepared in Example 1 and the phosphorus-containing substance into a master sample with a relatively high content of phosphorus element, measure the weight content of phosphorus element, and then according to the content of phosphorus element required by the final result Calculate the second content. Then obtain the polymer additive D containing titanium element in the same way. According to the final required content ratio of phosphorus element and titanium element, polymer additive C and polymer additive D in corresponding proportion are weighed to obtain polymer additive A.
[0117] Red phosphorus: ana...
Embodiment 9-15， comparative example 4-6
[0143] The polymer additives obtained in Examples 2-8 and Comparative Examples 1-3 were weighed according to the weight percentage of the product components described in Table 3 and Table 4.
[0144] Polyethylene: FB2230, Borealis
[0145] Polyamide: PA6, Guangzhou Xinhui Meida Company, M2400
[0146] UV absorber: Shandong Qingdao Huaen Chemical Co., Ltd., UV327
[0147] Fiberglass: PPG, ChopVantage3540
[0148] Talc powder: Luzenac R7
[0149] When the polymer is selected from polyethylene, put the above polyethylene and other components into a high-speed mixer with a rotation speed of about 1000rpm and dry mix for 1 minute. If there is talcum powder, add talcum powder filler and mix for 2 minutes. Put the mixed raw materials in a twin-screw extruder, melt and extrude, and granulate. The process conditions are: 200°C in the first zone, 210°C in the second zone, 220°C in the third zone, and 215°C in the fourth zone; the twin-screw extruder The length-to-diameter ratio is 4...
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