Organic polymeric particles, paper coating compositions, and methods

Abstract

Embodiments of the present disclosure include organic polymeric particles, paper coating compositions, coated paper, and methods of forming coated paper with the paper coating compositions. The embodiments of the organic polymeric particle include an organic hydrophilic polymer with a unit for hydrogen bonding, and a hollow porous structure that comprises an organic polymer that at least partially surrounds the organic hydrophilic polymer, where the hollow porous structure has a pore surface area greater than 1 percent of a total theoretical exterior surface area of the hollow porous structure and the organic hydrophilic polymer and the hollow porous structure give the organic polymeric particle a void volume fraction of 40 percent to 85 percent.

1 - 19 . (canceled) 
     
     
         20 . An organic polymeric particle comprising:
 a. a core including a polymer including units deriving from the polymerization of acrylate monomer; and   b. a shell surrounding the core, where the shell includes a polymer having units deriving from the polymerization of acrylate monomer and styrene monomer.   
     
     
         21 . The particle of  claim 20 , where the organic polymeric particle is a latex particle. 
     
     
         22 . The particle of  claim 20 , where the core has a particle size of from 0.7 to 0.5 micron. 
     
     
         23 . The particle of  claim 20 , where the core includes a polymer having units deriving from methacrylate monomer and acrylate monomer. 
     
     
         24 . The particle of  claim 23 , where the acrylate monomer is methyl acrylate, and where the methacrylate monomer is methyl methacrylate. 
     
     
         25 . The particle of  claim 20 , where the shell includes polymer having from 70 to 98 weight units deriving from the polymerization of styrene monomer, and from 2 to 30 weight units deriving from the polymerization of acrylate monomer. 
     
     
         26 . The particle of  claim 20 , where the shell includes polymer having from 90 to 95 weight units deriving from the polymerization of styrene monomer, and from 5 to 10 weight units deriving from the polymerization of acrylate monomer. 
     
     
         27 . The particle of  claim 20 , where the shell includes a polymer having units deriving from the polymerization of styrene monomer, acrylate monomer, and acid monomer. 
     
     
         28 . The particle of  claim 27 , where the acrylate monomer is selected from the group consisting of butyl acrylate and methyl acrylate. 
     
     
         29 . A hollow porous particle comprising: a polymer shell including units deriving from the polymerization of styrene, where the hollow porous particle has a void volume fraction of from 40 to 85 percent, and where the hollow porous particle has a pore surface area greater than 1 percent of the total theoretical exterior surface. 
     
     
         30 . The particle of  claim 29 , where the hollow porous particle has a void volume fraction of from 50 to 80 percent. 
     
     
         31 . The particle of  claim 29 , where the hollow porous particle has a void volume fraction of from 60 to 80 percent. 
     
     
         32 . The particle of  claim 29 , where the hollow porous particle has a particle size of from 0.35 to 5.1 micron. 
     
     
         33 . The particle of  claim 29 , where the hollow porous particle has a particle size of from 0.5 to 2.0 micron. 
     
     
         34 . The particle of  claim 29 , where the hollow porous particle has a particle size of from 0.8 to 1.2 micron. 
     
     
         35 . A method for making a hollow porous particle, the method comprising the steps of:
 a. providing an organic polymeric particle including a core including a polymer having units deriving from the polymerization of acrylate monomer and a shell surrounding the core, where the shell includes a polymer having units deriving from the polymerization of acrylate monomer and styrene monomer; and   b. subjecting the organic polymeric particle to conditions that will hydrolyze the units deriving from the polymerization of acrylate monomer, to thereby provide a hollow porous particle characterized by having a polymer shell including units deriving from the polymerization of styrene, where the hollow porous particle has a void volume fraction of from 40 to 85 percent, and where the hollow porous particle has a pore surface area greater than 1 percent of the total theoretical exterior surface.