Aqueous Emulsions of a Polymer Phase dispersed in an aqueous Phase, a method for preparing such EmulsionsMixtures of these Emulsions with a Second emulsion and Coating compositions comprising Said mixtures, Emulsions or above

摘要

Aqueous Emulsions comprising an aqueous phase and a phase of Polymer dispersion in the aqueous phase.Wherein the phase dispersadacomprende particles prepared in a multi-step Procedure of polymerization of a First stage in which monomer or a mixture of these is PolyMerizado in this first phase, where the monomer or mixture of monomers of the first stage is Polymerized to form a Polymer that is not greater than 25 and T1.A mixture of monomeroo Second Stage monomers Polymerized in a Second Stage,Where the demonomeros monomer or mixture of the second stage is Polymerized to form a polymer with a T1 not greater than 60 degrees,Where monomers Polymerized in the first etapaconstituyen from 50% to 95% by weight of the particles of multiple stages,And the second stage monomers are Polymerized in the 3% to 50% of the weight of the particles enpeso multiple stages,Where multiple stages contain particulates in Polymerized form 0,1% to 2% by weight (based on multistage particles) and etilu00e9nicamente Addition Polymerizable monomer containing at least two unsaturated carboxylate and gruposcarboxilo and optionalEasily between 0.5% and 3% by weight of a Polymerizable unsaturated monomer addition and etilu00e9nicamente grupocarboxilo or carboxylate containing a uniqueProvided that when the addition Polymerizable monomer and unsaturated etilu00e9nicamente contains a unique carboxiloo carboxylate Group is not present.The amount of the addition Polymerizable monomer and unsaturated etilu00e9nicamente contains at least two gruposcarboxilo or carboxylate is 0,85 2% in weight of the monomer particles in multiple stages. The resulting Polymers are useful in