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|1. (WO2017037347) CORE/SHELL POLYMER PARTICLES AS SURFACE SIZING AGENTS|
|Title:||CORE/SHELL POLYMER PARTICLES AS SURFACE SIZING AGENTS|
The present invention provides a core/shell polymer particle for surface sizing of cellulosic products, wherein the core polymer and the shell polymer of the core/shell polymer par- ticle are polymerized from monomers comprising at least 40%, by weight of monomers selected from branched C3-10- alkyl (meth)acrylate, styrene, linear C1-10-alkyl (meth)acry- late, and acrylonitrile, based on the total weight of the mon- omers of the core/shell polymer particle; provided that the polymer of the core/shell polymer particle comprises at least 40% by weight of branched C3-6-alkyl (meth)acrylate and at least 50% by combined weight of branched C3-10- alkyl (meth)acrylate and styrene, linear C1-10-alkyl (meth)acrylate, and/or acrylonitrile, based on the total weight of the monomers of the core/shell polymer particle.