Reaction #1797469

Reaction equation

methacrylic acid

methyl methacrylate

stearyl methacrylate

benzoyl peroxide

→

acrylic copolymer resin

Solvents

butyl acetate

butyl acetate

Conditions

Workup

1. 1
   OtherInto a four-neck flask equipped with a stirrer, a cooling tube, and a nitrogen gas inlet tube
2. 2
   workup.ADDITIONwas added dropwise over a period of 2 hours
3. 3
   Otherwas removed by distillation

Procedure

Into a four-neck flask equipped with a stirrer, a cooling tube, and a nitrogen gas inlet tube was charged 350 parts of butyl acetate and the whole was heated to 105° C. Under introduction of nitrogen gas, a mixture of 31 parts of methacrylic acid, 129 parts of methyl methacrylate, 40 parts of stearyl methacrylate, and 5 parts of benzoyl peroxide as an initiator was added dropwise over a period of 2 hours. After the copolymerization was continued for 2 hours with maintaining the same temperature, butyl acetate was removed by distillation to obtain an acrylic copolymer resin having a weight-average molecular weight of 11,000 and an acid value of 100 mgKOH/g.

Source