A method of forming a crosslinked polyphenol, the method comprising: reacting a bio-based phenolic compound comprising at least one phenolic hydroxyl group, with a crosslinking agent comprising at least two functional groups reactive with the phenolic hydroxyl group, wherein the at least two functional groups are each independently a halogen group, acid halide group, sulfonyl halide group, glycidyl group, anhydride group, or a combination comprising at least one of the foregoing, to provide the crosslinked polyphenol.

A method of forming a crosslinked polyphenol, the method comprising: reacting a bio-based phenolic compound comprising at least one phenolic hydroxyl group, with a crosslinking agent comprising at least two functional groups reactive with the phenolic hydroxyl group, wherein the at least two functional groups are each independently a halogen group, acid halide group, sulfonyl halide group, glycidyl group, anhydride group, or a combination comprising at least one of the foregoing, to provide the crosslinked polyphenol.

Provided in the present invention are biodegradable polymer microspheres and a preparation method therefor. The preparation method comprises the step of polymerizing a biodegradable polymeric monomer in a mixed solution containing the biodegradable polymeric monomer, a water-soluble polymer and a catalyst. In the present invention, the monomer and the water-soluble polymer are mixed into a solution, and phase separation occurs, after the in situ polymerization of the monomer, to obtain the biodegradable polymer microspheres; the production process is simple and easy to control, without the need for an organic solvent; and the production process is environmentally friendly and the method is suitable for large-scale production.

Provided in the present invention are biodegradable polymer microspheres and a preparation method therefor. The preparation method comprises the step of polymerizing a biodegradable polymeric monomer in a mixed solution containing the biodegradable polymeric monomer, a water-soluble polymer and a catalyst. In the present invention, the monomer and the water-soluble polymer are mixed into a solution, and phase separation occurs, after the in situ polymerization of the monomer, to obtain the biodegradable polymer microspheres; the production process is simple and easy to control, without the need for an organic solvent; and the production process is environmentally friendly and the method is suitable for large-scale production.

A toner prepared by a method comprising granulating while polymerizing a ring-opening polymerizable monomer with a catalyst under the presence of a surfactant and a colorant in a compressible fluid.

A toner prepared by a method comprising granulating while polymerizing a ring-opening polymerizable monomer with a catalyst under the presence of a surfactant and a colorant in a compressible fluid.

A process for emulsion polymerization is provided wherein a non-sulfonated polyester as a protective colloid in the process is provided. The non-sulfonated polyester may be an ethoxylated polyester. A product made by such process and a coating containing the product is also provided.

A process for emulsion polymerization is provided wherein a non-sulfonated polyester as a protective colloid in the process is provided. The non-sulfonated polyester may be an ethoxylated polyester. A product made by such process and a coating containing the product is also provided.