反应详情

温度

135 °C

An aqueous solution was prepared that contained dodecylbenzenesulfonic acid sodium salt (“SDBS”) (6 g), Na2S2O7 (1.42 g, 0.0059 mol), HOTEMPO (1.85 g, 0.0107 mol), acrylic acid (9 ml) and de-ionized water (1.2 L). To this was added 300 mL of the pre-polymer (prepared according to Example 1) and stirred for about 5 minutes. The mixture was then piston homogenized for one pass at about 700 BAR. The mini-emulsion was transferred to the 2 L PARR reactor and then deoxygenated by 10 pressurization/depressurization cycles with argon. The mini-emulsion was then heated to 135° C. After 1 hour at temperature, 8 ml of ascorbic acid (0.189 g/ml) was continuously added at a rate of 0.033 ml per minute over a 4-hour period. After a total of 6 hours at temperature the reaction was cooled to yield a poly(styrene/butyl acrylate) latex of Mn=13,000, Tg of ˜50C with a PD of 1.46 and particle size of ˜190 nm.

1. customAn aqueous solution was prepared
2. stirringThe mixture was then piston homogenized for one pass at about 700 BAR
3. customdeoxygenated by 10 pressurization/depressurization cycles with argon
4. additionAfter 1 hour at temperature, 8 ml of ascorbic acid (0.189 g/ml) was continuously added at a rate of 0.033 ml per minute over a 4-hour period
5. temperatureAfter a total of 6 hours at temperature the reaction was cooled