Particulate fillers

A granular filler and granular technology, which is applied in the direction of fibrous filler, thin material treatment, inorganic pigment treatment, etc., can solve the problems of pressure rise, etc., and achieve the effect of improving processability and improving mechanical properties

Active Publication Date: 2014-09-17
IMERYS MINERALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the present inventors have discovered that the presence of as little as a few ppm of coarse material in a material intended for polymer fiber type applications results in an undesirable pressure rise when extruding the polymer fiber

Method used

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Examples

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Embodiment Construction

[0032] granular filler

[0033] Suitable fillers include particulate inorganic fillers. For example, mineral fillers such as alkaline earth metal carbonates (e.g., dolomite, ie CaMg(CO 3 ) 2 , or calcium carbonate), metal sulfates (for example, barite or gypsum), metal silicates, metal oxides (for example, titanium oxide, iron oxide, chromium oxide, antimony trioxide or silicon dioxide), Metal hydroxides (eg, alumina trihydrate), kaolin, calcined kaolin, wollastonite, alumina, talc, or mica, including combinations thereof. Any of the above materials may be coated (or uncoated) or treated (or untreated). In particular, the filler may comprise, consist of, or consist essentially of coated calcium carbonate, treated calcined kaolin, or treated talc. Other suitable fillers may include those with low water absorption. The filler can be a single filler or can be a blend of fillers. For example, the filler can be a blend of two or more fillers listed herein.

[0034] The aver...

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PUM

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Abstract

Particulate fillers possess no, or very low, amounts of coarse particles. The particulate fillers may be included in compositions, such as polymer compositions including polymer film formed from a polymer composition, such as breathable film. The particulate fillers may be included in spunlaid fiber, and the spunlaid fiber may be included in products and non-woven fabric. The particulate filler may be included in staple fibers, which may be included in carpet.

Description

technical field [0001] The present invention relates to particulate fillers containing no or very little coarse material, compositions comprising said fillers and their use. The invention also relates to methods of making said particulate fillers and compositions. Background technique [0002] The use of processed minerals in various applications is known. For example, the use of processed minerals in applications such as paper products, coatings (eg, paints), and polymer compositions is known. [0003] Considerable research has been devoted to developing processed minerals with specific particle size distributions (psd), since particle size distributions generally affect the properties of compositions to which the minerals may be added for specific applications. References to a so-called "top cut" are often included when expressing the psd of granular material. The upper threshold value refers to the particle size value at which 98% (or 99%) of the particles in the fille...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/02C09C1/24C09C1/30C09C1/34C09C1/36C09C1/40C09C1/42C09C3/04C09C3/06C08K3/22A61L15/18
CPCA61L31/02A61L15/18C09C1/3009C08K2003/265C09C1/027C08K3/26C01P2004/51C01P2004/61A61L31/128C09C1/021C09C1/24C09C1/025C09C1/346C09C1/3615C09C1/42C09C3/04C01P2004/50C09C1/407C09C3/063C01P2004/62C09C1/02Y10T428/2982Y10T428/2991Y10T428/23921Y10T442/642
Inventor D·J·摩斯利M·G·特拉斯科特A·G·韦勃A·H·R·勒格里
Owner IMERYS MINERALS
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