| abstract |
(57) [Abstract] [Purpose] Excellent oil absorption capacity, oil absorption speed and oil retention performance after oil absorption for high viscosity oil and high viscosity solvent, no stickiness of resin, and deterioration of oil absorption performance even at low temperature. There is provided a swellable oil-absorbing agent free from swelling. [Structure] Obtained by aqueous suspension polymerization of a (meth) acrylate having 15 to 30 carbon atoms, a methacrylate having 2 to 6 carbon atoms and a crosslinking agent in the presence of a nonionic surfactant and a sparingly soluble inorganic salt. Fine particles. |