Alkyl benzyl alcohol polyoxyethylene ether hydroxypropyl allyloxy and derivative and preparation method thereof
A technology of polyoxyethylene ether hydroxypropyl allyl ether and alkyl benzyl alcohol, which is applied in the field of polymer additive synthesis and can solve the problems of decreased water resistance of emulsion films, decreased color development of coating films, and decreased emulsifying ability. , to achieve the effect of less foam, stable properties and lively chemical properties
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Embodiment 1
[0045] A kind of APEO-free nonylbenzyl alcohol polyoxyethylene ether (7) hydroxypropyl allyl ether reactive emulsifier, its preparation method is as follows:
[0046] a. In the reaction kettle, add nonylbenzene, paraformaldehyde, and sodium bromide, react at 70°C for 6-8 hours under the action of an acid catalyst, then pour into ice water, and wash the organic layer with water and saturated sodium bicarbonate solution in sequence , Distilled under reduced pressure to obtain p-nonylbenzyl bromide;
[0047] b. In the reaction kettle, add p-nonylbenzyl bromide, methanol, and potassium hydroxide, heat up to a reflux state, and keep the reflux reaction at this temperature for 2 hours to obtain p-nonylbenzyl alcohol;
[0048] C, add p-nonylbenzyl alcohol, catalyst potassium hydroxide in the reactor, then heat up and vacuum dehydration; dehydration completes, after passing into nitrogen replacement, press the mol ratio 1 / ( of p-nonylbenzyl alcohol / ethylene oxide 7~8) Slowly feed eth...
Embodiment 2
[0052] A kind of APEO-free nonylbenzyl alcohol polyoxyethylene ether (12) hydroxypropyl allyl ether reactive emulsifier, its preparation method is as follows:
[0053] a. In the reaction kettle, add nonylbenzene, paraformaldehyde, and sodium bromide, react at 70°C for 6-8 hours under the action of an acid catalyst, then pour into ice water, and wash the organic layer with water and saturated sodium bicarbonate solution in sequence , Distilled under reduced pressure to obtain p-nonylbenzyl bromide;
[0054] b. In the reaction kettle, add p-nonylbenzyl bromide, methanol, and potassium hydroxide, heat up to a reflux state, and keep the reflux reaction at this temperature for 2 hours to obtain p-nonylbenzyl alcohol;
[0055] C, add p-nonylbenzyl alcohol, catalyst potassium hydroxide in the reactor, then heat up and vacuum dehydration; dehydration completes, after passing into nitrogen replacement, press the mol ratio 1 / ( of p-nonylbenzyl alcohol / ethylene oxide 12~14) Slowly feed ...
Embodiment 3
[0059] A kind of APEO-free decanyl alcohol polyoxyethylene ether (10) hydroxypropyl allyl ether reactive emulsifier, its preparation method is as follows:
[0060] a. In the reaction kettle, add decylbenzene, paraformaldehyde, and sodium bromide, react at 70°C for 6-8 hours under the action of an acid catalyst, then pour into ice water, and wash the organic layer with water and saturated sodium bicarbonate solution in sequence , Distilled under reduced pressure to obtain p-decyl benzyl bromide;
[0061] b. In the reaction kettle, add p-decylbenzyl bromide, methanol, and potassium hydroxide, heat up to a reflux state, and keep the reflux reaction at this temperature for 2 hours to obtain p-decylbenzyl alcohol;
[0062] C, add p-decylbenzyl alcohol, catalyst potassium hydroxide in the reactor, then heat up and vacuum dehydration; dehydration is complete, after passing into nitrogen replacement, press the mol ratio 1 / ( of p-decylbenzyl alcohol / ethylene oxide 10-12) Slowly feed e...
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