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US 9,868,827 B2Granted
Process for the production of a composite polymer material with increased filler content
AssigneeOmya International AG
InventorsHolger Müller, Jürgen Leonhardt, Jürgen Spehn, Eduard Michel
Life of this patent
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Abstract
An inventive process for the production of a composite polymer material is provided allowing for the preparation of a composite polymer material with high filler content which may be used as a masterbatch.
Claims15
A composite polymer material obtained by a process comprising the steps of:
- (a) providing a mineral filler material;
- (b) providing a polymer material;
- (c) conveying the mineral filler material of step (a) and the polymer material of step (b) to a compounder;
- (d) forming a composite polymer material in said compounder;
- wherein the mineral filler material of step (a) is added to the polymer material of step (b) in an amount so that the mineral filler content of the resulting composite polymer material is in the range from 60 to 900 phr and wherein the mineral filler material of step (a) is added to the polymer material of step (b) by use of direct addition technology, said technology comprising the addition and mixing of said mineral filler material to said polymer material in a direct addition device in direct connection to the compounding section of the compounder so that no pneumatic conveying of the resulting mixture to the compounding section is involved and wherein said compounder is an extruder.
2 more elements
A composite polymer material comprising a mineral filler material and a polymer material, wherein the composite polymer material is in the form of grains having an average grain size of less than 4 mm, and wherein the filler content in the composite polymer material is in the range from 60 to 900 phr.
Dependencies are inferred from the claim text.