Abstract: Polymer particles having a mean primary particle diameter d50 between 50 nm and 10 pm based on the total weight, containing: A. 10 to 100% by weight of a polymer phase A, obtainable by free-radical copolymerization of an oil-in-water miniemulsion having a monomer mixture as oil phase, containing i) 30 to 99.9% by weight of one or more mono-ethylenically unsaturated monomers II having at least one C12-C48-n-alkyl side chain, ii) 0 to 60% by weight of one or more mono-ethylenically unsaturated monomers II having at least one C1-C11-n-alkyl and/or one C3-C48-i-alkyl side chain, iii) 0.1 to 20% by weight of one or more monomers III having at least two non-conjugated ethylenic double bonds, iv) 0 to 69.9% by weight of one or more (hetero)aromatic, mono-ethylenically unsaturated monomers IV, v) 0 to 40% by weight of one or more other mono-ethylenically unsaturated monomers V; and B.

Abstract: A composition comprising a plastic material and a content of from 50 to 90% by weight of an additive, wherein said additive comprises zinc oxide that has been treated with a silicon compound, wherein said zinc oxide has a specific surface area (BET) of from 0.5 m2/g to 6 m2/g before being treated with a silicon compound.

Abstract: A powdery filler for dental materials consisting of particles of feldspar or feldspar derivatives having a mean particle diameter (d50) of from 0.25 to 5 ?m, said particles having a coating with a silicon compound containing reactive groups.

Abstract: The present invention relates to a process for comminuting glass fibers from waste glass-based fibrous materials.

Abstract: The present invention relates to a process for comminuting glass fibers from waste glass-based fibrous materials, comprising the process steps of a) coarsely comminuting the glass fibers to obtain coarsely comminuted glass fibers; and b) finely comminuting said coarsely comminuted glass fibers with a granular additive having a d50 value within a range of from 0.1 to 5.0 mm as an aggregate to obtain finely comminuted glass fibers, the mixing ratio of glass fibers to additive being from 25/75 to 95/05 by weight.

Abstract: A powdery filler for dental materials consisting of particles of feldspar or feldspar derivatives having a mean particle diameter (d50) of from 0.25 to 5 ?m, said particles having a coating with a silicon compound containing reactive groups.

Abstract: The present invention relates to the reduction of the dust generated by silicates, according to the method of the present invention the crushed silicate is surface-coated with a polyorganociloxane also related to a silicate with reduced dust generation and the use of a reduced dust silicate as reinforcing filler in plastic materials.

Abstract: A vertical set of sieves receives the particulate material from a vibrating trough conveyor above the set and is vibrated by an agitator on the machine frame. The sieves are spread apart and then tilted to dump the collected particles into respective funnels. The set can then be swung back and contracted for the the next stage. The funnels are connected to collectors which are automatically weighted.