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US 10,744,434 B2Granted
Use of polymers comprising thermoplastic polymers as filtration aids and/or stabilising agent
AssigneeBASF SE
InventorsChristian Drohmann, Tobias Petsch, Thomas Keßler, Frank Müller, Elisa Hamm de Bantleon, Klemens Mathauer
Life of this patent
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Abstract
The invention relates to the use of polymers comprising thermoplastic polymers as filtration aids and/or stabilishing agent for the filtration or stabilisation of aqueous liquids.
Claims17
A filter aid for filtering and stabilizing an aqueous liquid, the filter aid comprising a comminuted form of a compounded polymer obtained by reactive compounding
- a) 20-95% by weight of a thermoplastic polymer selected from the group consisting of polyolefins and polyamides;
- and
- b) 80-5% by weight of at least one further substance selected from the group consisting of silicates, carbonates, oxides, diatomaceous earth, PVPP and mixtures thereof
- wherein the reactive compounding is selected from the group consisting of rolling, kneading, casting, sintering, pressing, compounding, calendaring, extrusion or combination thereof.
1 more element
A filter aid for filtering and stabilizing an aqueous liquid, the filter aid comprising a comminuted form of a compounded polymer obtained by reactive compounding
- a) 20-95% by weight of a thermoplastic polymer selected from the group consisting of polyolefins and polyamides;
- and
- b) 80-5% by weight of at least one further substance selected from the group consisting of silicates, carbonates, oxides, diatomaceous earth, PVPP and mixtures thereof
- wherein the reactive compounding is selected from the group consisting of rolling, kneading, casting, sintering, pressing, compounding, calendaring, extrusion or combination thereof
- wherein the comminuted form of a compounded polymer has a mean particle size from 1 to 1,000 μm.
2 more elements
Dependencies are inferred from the claim text.