Patent ID: 8333871
Filing Date: 2012-12-18
Classification: D21H,Y10T

Abstract:
1. A process for making a paper material, the process comprising: (1) providing a latex including agglomerated hollow particles; (2) forming an aqueous slurry by introducing water, pulp, and the latex including agglomerated hollow particles, where the slurry includes a filler component that includes at least 10% by weight of the agglomerated hollow particles; (3) forming a wet sheet from the slurry; and (4) drying the sheet to form the paper material, wherein the paper material is brighter than a paper with a filler of precipitated calcium carbonate when measured at the same filler loading, where the agglomerated hollow particle latex is modified with the addition of a stabilizing agent, wherein the stabilizing agent is selected from the group consisting of polyvinyl alcohol, carboxymethylcellulose, and starch.