A kind of preparation method and application of polymerizable monomer
A technology for polymerizing monomers and monomers, applied in the field of preparation of polymerizable monomers, can solve the problems of low yield and purity of polymerizable monomers, difficult reaction control, and high production costs, and achieve excellent salt resistance and production costs. Low and by-product effect
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preparation example Construction
[0018] The present invention provides a kind of preparation method of polymerizable monomer, wherein, the method comprises the following steps:
[0019] (1) Under amidation reaction conditions, contacting an aromatic diamine having a structure represented by formula (I) with acrylic acid to obtain an intermediate M having a structure represented by formula (II);
[0020]
[0021] (2) Under condensation reaction conditions, the intermediate M is contacted with a dibasic fatty acid having a structure represented by formula (III) to obtain a polymerizable monomer represented by formula (IV);
[0022] HOOC-(CH 2 ) m -COOH Formula (Ⅲ),
[0023]
[0024] Wherein, n is an integer of 0-5, m is an integer of 1-10, preferably, n is 0 or 1, and m is 4, 6 or 8.
[0025] It should be noted that, for the sake of distinction, in the present invention, the reaction of acrylic acid and amine to obtain amides by removing a molecule of water is called amidation reaction, and the reactio...
preparation example 1
[0054] This preparation example is used to illustrate the preparation method of the polymerizable monomer provided by the present invention.
[0055] (1) Preparation of intermediates
[0056] In the three-necked flask, first add 150 ml of xylene, then add 0.1 mol of p-phenylenediamine, and then add 0.1 mol of acrylic acid dropwise after the temperature is raised to 75°C under stirring. After 2 hours, the product containing the intermediate M1 having the structure represented by formula (V) was obtained.
[0057]
[0058] (2) Preparation of polymerizable functional monomers
[0059] Under stirring, first mix the product containing intermediate M1 obtained in step (1) with 0.1mol sebacic acid, heat to 110°C, react for 6 hours, distill off the solvent and dry with calcium oxide at 70°C to obtain The sample was recrystallized more than three times with acetone solvent to obtain a polymerizable functional monomer D1. The calculated and tested monomer yield was 85.7%, and the m...
preparation example 2
[0063] This preparation example is used to illustrate the preparation method of the polymerizable monomer provided by the present invention.
[0064] (1) Preparation of intermediates
[0065] In the three-necked flask, first add 0.1mol of p-xylylenediamine, then add 0.1mol of acrylic acid, mix the two evenly under stirring, then heat to 80°C, and reflux for 2 hours to obtain the compound containing the formula (Ⅵ). Structure of the product of intermediate M2.
[0066]
[0067] (2) Preparation of polymerizable monomers
[0068] Under stirring, first dissolve the intermediate M2 obtained in step (1) in 150 ml of dichloromethane. After the dissolution is complete, heat to 160°C and start to add 0.1 mol of sebacic acid dropwise, and react at this temperature for 2 hours Finally, the solvent was evaporated and dried with calcium oxide at 70°C, and the product was recrystallized more than three times with acetone solvent to obtain polymerizable functional monomer D2. The monome...
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