Patent ID: 8497323
Filing Date: 2013-07-30
Classification: C08F,C08G,C08J

Abstract:
1. A method for producing a spray-dried powder comprising: (1) polymerizing a composition of a vinyl monomer in the presence of a latex of a silicone polymer to produce a latex composition of vinyl polymer and silicone polymer, and (2) spray-drying the latex composition to form a spray-dried powder, wherein the components of the polymerizing composition of the vinyl monomer in the presence of the latex of the silicone polymer and the polymerizing conditions are controlled so to limit the “sulfate” content of the spray-dried powder, defined as the content of sulfates, sulfonates, and sulfinates in mmol/100 g of the powder, to 0.02 to 2.5 mmol/100 g of the powder.