Methods for making polymer particulates in gel form

摘要

Methods for making polymer particles in gel form via an emulsion and/or suspension process are provided. The method can include preparing a reactant mixture comprising a carrier fluid and a monomer component containing one or more phenolic compounds and optionally one or more crosslinking compounds, a mixture of Maillard reactants, or a combination thereof. The monomer component can polymerize to form the polymer particles in gel form. The reactant mixture can be located within a reactor having one or more inner surfaces in contact with the reactant mixture during polymerization of the monomer component. The one or more inner surfaces limit a release of metal, metal ions, or a combination thereof into the reactant mixture to produce the polymer particles in gel form containing less than 1 wt % metal atoms, metal ions, or a combination thereof, based on the total weight of the polymer particles in gel form.

主权项

1. A method for making polymer particles in gel form via an emulsion or suspension process, the method comprising:
preparing a reactant mixture comprising a carrier fluid and a monomer component containing one or more phenolic compounds, wherein:
the monomer component polymerizes to form the polymer particles in gel form,the reactant mixture is located within a reactor having one or more inner surfaces in contact with the reactant mixture during polymerization of the monomer component,the one or more inner surfaces limit a release of metal, metal ions, or a combination thereof into the reactant mixture to produce the polymer particles in gel form containing less than 1 wt % metal atoms, metal ions, or a combination thereof, based on the total weight of the polymer particles in gel form,the one or more inner surfaces in contact with the reactant mixture comprises a metal,at least a portion of the metal has undergone a passivation process to produce a passivated metal surface, andthe passivated metal surface is formed by a carburization process, a boronization process, a nitridization process, or any combination thereof.