Azobisisobutyronitrile → 9-Oxo-2,4,5,7-decatetraenoic acid

Temperatur

70 °C

A mixed solution of 10 g of Resin for Dispersion Stabilization (P-1) shown below and 280 g of Isopar G was heated to temperature of 70° C. with stirring under a nitrogen gas stream. To the solution was dropwise added a mixture of 30 g of methyl methacrylate, 61 g of methyl acrylate, 9 g of 2-(N,N-dimethylamino)ethyl methacrylate and 1.5 g of 2,2′-azobis(isovaleronitrile) (abbreviated as AIVN) over a period of one hour, followed by stirring for 2 hours. Then, 1.0 g of AIVN was added to the reaction mixture and the mixture was heated to temperature of 75° C., followed by stirring for 3 hours. Then, 0.8 g of 2,2′-azc)bis(isobutyronitrile) (abbreviated as AIBN) was added to the mixture and the mixture was heated to temperature of 80° C., followed by stirring for 3 hours. The temperature of the reaction mixture was raised to 100° C., followed by stirring under a reduced pressure of 200 mmHg for 2 hours, thereby distilling off the unreacted monomers. After cooling the reaction mixture, it was passed through a nylon cloth of 200 mesh. The resulting white dispersion was a latex having a polymerization rate of 99% and an average particle size of 0.35 μm. The particle size was measured by CAPA-500 manufactured by Horiba Ltd. (hereinafter the same).

1. additionTo the solution was dropwise added
2. stirringby stirring for 2 hours
3. temperaturethe mixture was heated to temperature of 75° C.
4. stirringby stirring for 3 hours
5. temperaturethe mixture was heated to temperature of 80° C.
6. stirringby stirring for 3 hours
7. temperatureThe temperature of the reaction mixture was raised to 100° C.
8. stirringby stirring under a reduced pressure of 200 mmHg for 2 hours
9. distillationdistilling off the unreacted monomers
10. temperatureAfter cooling the reaction mixture, it

ORD-Eintrag

ord-b69be9f814fd424f84270f41a341ff6a

Quelldatensatz

uspto-grants-2001_10

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US06302537B1