Epoxy latex hybrid

Uses Surf, modifier, slip agent, abrasion resist, aid, scuff/scratch/rub resist. aid, metal mark resist, aid, antiblocking agent for waterborne coatings, water-reducible and latex coatings, emulsions, based on acrylics, all ds, polyesters, two-part epoxies, PU, hybrids Features High solids provides toughness free of alkylphenol ethoxylates ... 

Uses Pigment for water-based paints/coatings, industrial maintenance, marine, wood, plastic, coil, and protective coatings, office furniture finishes, DIY decorative and special effect paints, leather finishes Features High pigment loading forexc. color control compat. with water-based chemistries (acrylic, latex, epoxy, urethane, hybrid systems) contain no VOC s glycol-free... 

Waterborne coatings. These are based on two-component epoxy-polyamine/polyamidoamine or epoxy-acrylic latex hybrids. One limitation of the water-borne systems is their poor cure in high humidity conditions. They have made some penetration in industrial maintenance coatings and are expected to grow more significantly in the future. 

Epoxy dispersions also can easily be blended with other waterborne polymers to make modified latex adhesives. The resulting hybrid adhesive produces performance properties and application characteristics that are superior to those of the originating latex system. 

Table 14.6 illustrates typical improvements noted in epoxy hybrid formulations with vinyl chloride, acrylic, and styrene butadiene lattices. Tensile strengths of cured, latex-saturated paper substrates are listed in absolute numbers while those of latex-epoxy hybrids are listed as percent increases in tensile strength over that of the latex alone. The mechanisms believed responsible for these improvements are (1) cocuring of the epoxy group with carboxyl and amine functional groups present on the latex backbone and/or (2) homopolymerization of the epoxy catalyzed by the tertiary amine included in some hybrid formulations. 

Kawahara et al. [187] prepared acrylic/epoxy composite latexes via hybrid miniemulsion polymerization. Landfester et al. [188] have incorporated PMMA... 

Latexes made out of composite polymer particles, that is, particles containing different phases, present definitive advantages in many applications. Thus, particles formed by an elastic core and a hard shell are used as impact modifiers for polymer matrices. Hard core-soft shell partides are particularly useful for paints because they have a low minimum film formation temperature and are not sticky at higher temperatures. Hollow partides are effident opadfiers, and hybrid polymer-polymer particles, such as epoxy-acrylic polymer particles, combine the properties... 

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