The average molecular weight of a latex can be influenced by a number of factors, but it is often not realized that the number of particles in the latex (which is directly related to particle size) is important in determining molecular weight.
Silanes have been shown to improve film properties of resin systems when they are reacted into the resin or incorporated into a resin solution as additives. The improved properties result from their unique functionality, which allows for inter-polymer crosslinking and chemical bond¬ing to many substrates.
We have been working on morphology control in latex particles for many years and have come to learn that achieving desired structures in composite particles is dependent not only upon the emulsion polymerization recipe, but also strongly upon the reaction process conditions.
Maxemul reactive surfactants act as efficient emulsifiers providing colloidal stability and are chemically bonded to the polymer particles during free radical polymerization. The enhanced stability and mitigation of surfactant leaching during and after film forming significantly improve water resistance and barrier properties of the latex binder as a replacement of conventional surfactants.
Copolymerization of the hydrophobic vinyl esters of branched neo-carboxylic acids with acrylic monomers significantly improves the performance of acrylic binders.
Through the use of designed particle morphology and process conditions a latex has been developed that can be formulated into a coating without the use of coalescing solvents that gives excellent corrosion resistance, adhesion to steel, and still is hard enough to give good block resistance and dirt pickup resistance.
PLIOTEC® WPM120 latex for waterproofing, damp-proofing and crack-prevention membranes combines superior water resistance, excellent tensile strength and good elongation properties.
In a continuing effort to build a more sustainable business, OMNOVA Solutions announced a price increase of up to $0.05/wet lb ($0.10/dry lb) on all styrene butadiene latex products to all served markets in the Americas.
