Filler-containing polymer dispersion, method for its production and use
AssigneeHenkel AG & Co. KGaA
InventorRoberto Pavez Aranguiz
Life of this patent
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Abstract
A filler-containing an organic polymer dispersion is provided. The organic polymer of the dispersion is polymerized in the presence of particles of at least one filler. The ratio of the particle size of the filler particles to the particle size of the polymer particles is in the range of from 1.1:1 to 20:1.
Claims20
A filler-containing polymer dispersion, comprising water, particles of at least one filler selected from the group consisting of organic fillers, inorganic fillers and mixtures thereof, at least one water soluble organic polymer with a molecular weight of more than 600 and an HLB value of at least 15, and particles of at least one synthetic organic polymer, polymerized in the presence of at least one type of the filler particles, wherein the dispersion has a ratio of filler particle size to synthetic organic polymer particle size of 1.1:1 to 20:1 and wherein the synthetic organic polymer particles have a diameter (d50) of 0.03 to 0.5 μm.
The process for the production of a filler-containing polymer dispersion, which comprises:
- emulsion polymerizing at least one radical-polymerizable monomer in an aqueous phase using a polymerization initiator, the aqueous phase containing filler particles of at least one dispersed filler with a particle size (d50) of 0.01 to 0.51 μm and at least one water-soluble organic polymer with a molecular weight of more than 600 and an HLB value of more than 15 whereby a dispersion comprising filler particles and polymer particles having a diameter (d50) of 0.03 to 0.5 μm is formed.
An adhesive or surface coating composition comprising:
- water;
- particles of at least one filler selected from the group consisting of organic fillers, inorganic fillers and mixtures thereof;
- at least one water soluble organic polymer with a molecular weight of more than 600 and an HLB value of at least 15;
- and synthetic organic polymer particles polymerized in the presence of at least one type of the filler particles, the synthetic organic polymer particles having a diameter (d50) of 0.03 to 0.5 μm;
- wherein the dispersion has a ratio of filler particle size to synthetic organic polymer particle size of 1.1:1 to 20:1.
Dependencies are inferred from the claim text.