Preparation method of vp/α-olefin copolymer and vp/α-olefin copolymer
An olefin copolymer and olefin technology, applied in the field of polymer polymerization, can solve the problems of increased cross-linked gelation impurity content, production cost product application restrictions, and restrictions on the production efficiency of copolymerized products, so as to achieve high reaction efficiency and avoid cross-linking Uniform and controllable effects of gelation, chain scission, and copolymerization
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Embodiment 1
[0054] The preparation of embodiment 1, VP / α-olefin copolymer
[0055] (1), α-olefin preactivation
[0056] Mix 3.59g of dodecene and 3.59g of ethanol evenly, add 0.0718g of triisobutylaluminum for preactivation, and obtain mixture A for subsequent copolymerization; the preactivation temperature is controlled at 10°C, and the preactivation time is 30 minutes , The pre-activation process is a reflux process under the protection of nitrogen.
[0057] (2), pre-copolymerization reaction
[0058] Add 10g of PVPK15, 0.19g of dodecene, 0.027g of benzoyl peroxide, 0.041g of tert-butyl peroxide, 0.0068g of ascorbic acid, and 100g of ethanol into a four-necked flask with a stirring and condensing device, and stir until completely dissolved Afterwards, nitrogen gas was introduced for replacement, and then the pre-copolymerization reaction was carried out at 40°C. The pre-copolymerization reaction was a reflux reaction, and the pre-copolymerization reaction time was controlled to be 30 ...
Embodiment 2
[0063] The product VP / α-olefin copolymer is a white solid, insoluble in water, and has good solubility in hydrocarbon solvents. Detect residual single and residual initiator in the product respectively, as shown in Table 2. After calculation, the grafting rate of monomer olefin is 100%. The preparation of embodiment 2, VP / α-olefin copolymer
[0064] (1), α-olefin preactivation
[0065] Mix 151.3g of hexadecene and 90.5g of isopropanol evenly, add 6.44g of triethylaluminum for preactivation, and obtain mixture A for subsequent copolymerization; the preactivation temperature is controlled at 15°C, and the preactivation time is 40 Minutes, the pre-activation process is a reflux process under the protection of nitrogen.
[0066] (2), pre-copolymerization reaction
[0067] Add 20g of PVPK30, 9.66g of hexadecene, 4.24g of diacetyl peroxide, 10.49g of di-tert-butyl peroxide, 2.946g of ascorbic acid, and 100g of isopropanol into a four-necked flask with a stirring and condensing d...
Embodiment 3
[0073] The preparation of embodiment 3, VP / α-olefin copolymer
[0074] (1), α-olefin preactivation
[0075] Mix 52.2g of hexene and 26.1g of 3-methyl-1-butanol evenly, add 2.838g of diethylaluminum chloride for preactivation, and obtain mixture A for subsequent copolymerization; the preactivation temperature is controlled at 25 °C, the pre-activation time is 50 minutes, and the pre-activation process is a reflux process under the protection of nitrogen.
[0076] (2), pre-copolymerization reaction
[0077] Add 25g PVPK90, 4.54g hexene, 5.41g tert-butyl peroxyisobutyrate, 9.13g dicumyl peroxide, 4.36g BHT, 100g 3-methyl-1-butanol respectively into the In the four-necked flask of the device, stir until the dissolution is complete, pass nitrogen replacement protection, and then control the pre-copolymerization reaction at 90 ° C, the pre-copolymerization reaction is a reflux reaction, and the time of the pre-copolymerization reaction is controlled for 40 minutes to obtain a pre-...
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