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US 2005/0049346 A1Published application
Filler concentrates for use in thermoplastic materials
AssigneeOmia
InventorsPierre Blanchard, Maurice Husson
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AssigneeOmia
InventorsPierre Blanchard, Maurice Husson
Estimating the term…
The invention relates to the use of isotactic polypropylenes of very great fluidity for the preparation of concentrates of fillers which can be used in thermoplastics of the olefinic type such as polypropylene, polyethylene and as a general rule: the polymers used alone or in a mixture, based on ethylenic monomers containing 2 to 6 atoms of carbon polymerised alone or in a mixture. The invention also relates to the concentrates of fillers or master batches prepared from isotactic polypropylenes of very great fluidity. The invention finally relates to the loaded thermoplastic materials obtained with the addition of selected polypropylenes according to the invention, and the industrial products manufactured from, or containing, such thermoplastic materials.
1-17. Cancelled
A method for preparing a master batch comprising one or more mineral fillers and one or more polymers, comprising:
A master batch comprising one or more mineral fillers in an amount greater than 82% by weight, wherein said master batch has a fluidity index greater than or equal to 5 g/10 min (190 C-5 kg-2.09 mm) measured in accordance with the standard NF T with the standard NF T 51-620, and further comprises at least one isotactic polypropylene having a crystallinity percentage greater than 20%, measured by the DSC method.
Dependencies are inferred from the claim text.