成人免费xx,国产又黄又湿又刺激不卡网站,成人性视频app菠萝网站,色天天天天

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
400-158-6606
Try our best to find the right business for you.
Do not miss inquiry messages Please log in to view all inquiry messages.

Welcome back!

ChemicalBook CAS DataBase List tetradecyl methacrylate
2549-53-3

tetradecyl methacrylate synthesis

2synthesis methods
-

Yield:-

Reaction Conditions:

with toluene-4-sulfonic acid;hydroquinone in toluene at 60;Reflux;

Steps:

1 Example 1
2) In a 500 mL four-necked flask equipped with a thermocouple, a stirrer, a water separator, and a reflux condenser,Add an appropriate amount of tetradecanol, toluene (solvent), hydroquinone (polymerization inhibitor), and p-toluenesulfonic acid (catalyst), and heat them to 60°C to completely dissolve them.Then add a methacrylic acid so that the molar ratio of methacrylic acid and tetradecanol is 1:1, the amount of toluene is 75% of the total mass of methacrylic acid and tetradecanol, and the amount of hydroquinone is methacrylic acid and The total mass of tetradecanol is 0.5%, and the amount of p-toluenesulfonic acid is 1.0% of the total mass of methacrylic acid and tetradecanol; 3) continue to heat up to the reflux temperature, the water generated by the reaction carried by the water-bearing agent toluene, in the water separator layer;4) When the reaction reaches the theoretical amount of water, the reaction is completed, the reaction is stopped, excess methacrylic acid and toluene are distilled off under reduced pressure, washed with a mass fraction of 5% alkalinity until the lower aqueous layer is colorless, and then saturated NaCl is used. The solution was washed to neutrality and the pH was 7;5) Take an appropriate amount of anhydrous calcium chloride to dry the product, suction filtration, and vacuum drying in a vacuum oven for more than 48 hours to obtain pure tetradecyl methacrylate.

References:

Shanxi Jujiehan Chemical Co., Ltd.;Li Changying CN107903174, 2018, A Location in patent:Paragraph 0010; 0011; 0012; 0013

tetradecyl methacrylate Related Search: