JPH04334535A

PURPOSE:To provide a dispersant for calcium carbonate obtaining low viscosity even in a high conc. slurry by the addition of a small amount and also excellent in dispersion stability. CONSTITUTION:A dispersant for calcium carbonate is composed of a salt of a hydrolysate of a copolymer of maleic anhydride and an aliphatic conjugated diene such as 1,3-butadiene or …

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Preparation and property analysis of polyacrylate dispersant …

Furthermore, Dispersant-B and SN5040 are found to be the suitable dispersants for the dispersion of nanometer calcium carbonate. The grinding experiment of 325-mesh calcium carbonate reveals a linear relation between log tgrind and the weight percentage of fine particles, i.e. w (≤2 μm) or w (≤1 μm). Moreover, a power function is well ...

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Dispersing Agent

A dispersant is known as a substance that reduces the cohesive forces between particles of same type. ... Powder binder formulation and compound manufacture in metal injection molding (MIM) ... (above about 1 micron) disperse perfectly, whereas particles smaller than that tended to agglomerate. Nano calcium carbonate with a datasheet particle ...

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CN112608406A

The invention discloses a heavy calcium carbonate grinding dispersant and a preparation method thereof, wherein the dispersant comprises the following raw materials in parts by weight: 20-35 parts of carboxylic acid monomer, 1-10 parts of functional monomer, 1-10 parts of soft monomer, 0.2-5 parts of crosslinking monomer, 1-10 parts of chain transfer agent, 0.3-1.5 parts of initiator, …

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ACUMER™ 9400 Polymer | Dow Inc.

A polycarboxylate dispersant as high-performance mining polymer. Uses Typically used to disperse and stabilize high solids mineral slurries which include calcium carbonate (pcc, gcc), kaolin clay, talc, titanium dioxide, lime and aluminum hydroxide

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DISPERSANTS FOR WET-GRINDING CALCIUM CARBONATE.

Sodium Polyacrylate dispersant, which can be used for pigment dispersing and WGCC grinding. Efficient dispersant for WGCC pre-grinding process. It has higher anionic charge. C60/C65. …

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ACUMER™ 9600N Dispersant Polymer | Dow Inc.

What is ACUMER™ 9600N Dispersant Polymer? Modified carboxylic copolymer dispersant for fine- and ultra-fine mineral slurries. Designed to perform well at most extreme temperature and …

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CN103030729A

The invention relates to a dispersant for grinding heavy calcium carbonate as well as a synthetic method and application thereof. The method comprises the following steps of: mixing water, acrylic acid, a co-monomer X and a co-monomer Y, and adding a reducer of an initiating system to prepare a dripping solution A; preparing a dripping solution B from water and an oxidant of …

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WO2004087574A1

the dispersant for the heavy calcium carbonate wet grinding step of the present invention has a high degree of pulverization, a particle dispersing effect and stability in the heavy calcium carbonate wet grinding step (microparticulated heavy 'calcium carbonate slurry production step). Very good. Further, even when the slurry concentration is increased, a high-concentration …

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JPH04334536A

JPH04334536A JP91133565A JP13356591A JPH04334536A JP H04334536 A JPH04334536 A JP H04334536A JP 91133565 A JP91133565 A JP 91133565A JP 13356591 A JP13356591 A JP 13356591A JP H04334536 A JPH04334536 A JP H04334536A Authority JP Japan Prior art keywords dispersant calcium carbonate maleic anhydride pref copolymer Prior art date 1991 …

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Masterbatch and compounding

In many plastic manufacturing processes, it is necessary to pre-disperse fillers and additives in a masterbatch or compound. Omya has a wealth of experience in the production of masterbatches and compounds based on calcium carbonate including enhanced white and color masterbatches. Omya is continuously expanding its product portfolio with new developments that make it …

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Ultrasonic Dispersing and Wet-milling of Calcium …

Unmilled calcium carbonate with initial median particle size of d 50 ≈ 20 µm; Acumer 9400 polycarboxylate dispersant. The BSP-1200 processor was equipped with a Half-Wave Barbell Horn ( HBH ), operating at the frequency of …

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WO2004067840A2

In a process for preparing a white pigment mixture suitable for coating paper wherein a cationically bulked kaolin clay pigment is dispersed in water in the presence of an anionic dispersant and mixed with a calcium carbonate pigment, the improvement which comprises using an epichlorohydrin amine complex to bulk said kaolin, and employing as the dispersant the …

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(PDF) Dispersion, Stabilisation and Casting of …

Three commercial surface active agents were tested as potential dispersants for aqueous calcium carbonate suspensions. Deflocculation curves were determined with a Brookfield viscometer in...

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Reinforcing polypropylene with calcium carbonate of …

Reinforcing polypropylene with calcium carbonate of different morphologies and polymorphs DOI 10.1515/secm-2015-0307 Received June 30, 2015; accepted February 25, 2017; previously ... Abbreviations Compounds PP/CWs PP and rod-like calcite whiskers PP/AWs PP and rod-like aragonite whiskers PP/CPs PP and granular-calcite particles. Y. Jing et al ...

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WO2012011368A1

The present invention relates to: a dispersant for calcium carbonate, which can produce a calcium carbonate slurry having a reduced initial viscosity by wet-grinding and can prevent the significant increase in viscosity of the slurry over time; and a process for continuously producing the dispersant. This dispersant for calcium carbonate is produced through a polymerization step …

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PP Calcium Carbonate Compound

Special formula: CaCO3 compound and/or talc compound do not apparently side effect physical property of PE film, sometime the tensile strength of PE film becomes better after adding CaCO3 compound and/or talc compound. Plastic calcium carbonate additive named as CaCO3 filler additive,CaCO3-filled agent,CaCO3 composite,CaCO3 extender,CaCO3 granule.

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Dispersant for heavy calcium carbonate wet grinding process

In the heavy calcium carbonate pulverization step (microparticulated heavy calcium carbonate slurry production step), the dispersant for heavy calcium carbonate wet pulverization step is excellent in the dispersion effect and stability of the particles used. That is, a dispersant used in a step of wet-grinding heavy calcium carbonate having a volume average particle size of Y μm to …

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(PDF) Effects of Grinding Aids Used in Grinding Calcium Carbonate

Grinding aid chemicals which are used in the grinding of calcium carbonate (CaCO3) to prevent agglomeration are chemisorbed on the surfaces of particles, and the compatibility of them with the ...

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Calcium Carbonate Fillers

Calcium carbonate is the chemical compound CaCO 3 and occurs widely in nature. Calcium carbonate fillers are finely divided forms of this chemical and are derived from various mineral sources. As such they usually contain significant levels of other materials, especially magnesium carbonate (MgCO 3) and dolomite (CaCO 3.MgCO 3). They are one of ...

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WO2013095961A1

A process is provided for making a calcium carbonate slurry comprising the steps of (a) forming a mixture comprising water, an acidic dispersant system, and calcium carbonate, (b) grinding said mixture to form a preliminary slurry of particles of said calcium carbonate, wherein 50% or more by weight of said calcium carbonate in said preliminary slurry, based on the total weight of said …

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Preparation and property analysis of polyacrylate dispersant …

Two types of dispersants for calcium carbonate were synthesized by condensation polymerization. One was the acrylic homopolymer (Dispersant-A), and the other was …

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DE602004029550D1

In a process for preparing a white pigment mixture suitable for coating paper wherein a cationically bulked kaolin clay pigment is dispersed in water in the presence of an anionic dispersant and mixed with a calcium carbonate pigment, the improvement which comprises using an epichlorohydrin amine complex to bulk said kaolin, and employing as the dispersant the …

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Effects of Grinding Aids Used in Grinding Calcium …

Grinding aid chemicals which are used in the grinding of calcium carbonate (CaCO3) to prevent agglomeration are chemisorbed on the surfaces of particles, and the compatibility of them with the solvent, water, or organic resin …

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Synthesis and application of a polyacrylate dispersant on the

The development of coating technology has dramatically increased the demand for ultrafine ground calcium carbonate, which is used especially for top-coating, and the required …

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Processing and Tensile Properties of Natural …

The processing and tensile properties of the compounds of natural rubber (NR) filled with calcium carbonate (CaCO3) or silica filler in the presence of lauryl alcohol have been investigated.

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US4175066A

calcium carbonate salt copolymer molecular weight aqueous dispersion Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US05/893,696 Other ...

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Processing and Tensile Properties of Natural Rubber …

solve those problems, a dispersant aid was used, namely lauryl alcohol, which can be produced from palm oil and it is structured molecule is visualized in Fig. 1. Therefore, this ... ingredient, which lowered the viscosity of the NR -silica or NR -calcium carbonate compound.

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EP1585860A2

EP1585860A2 EP04701794A EP04701794A EP1585860A2 EP 1585860 A2 EP1585860 A2 EP 1585860A2 EP 04701794 A EP04701794 A EP 04701794A EP 04701794 A EP04701794 A EP ...

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Detergents and Dispersants

Enhanced future lubricant specifications and new engine hardware require development of innovative dispersant technologies. ... the mineral oil solubility characteristics are poor. However, a process to make a soluble crystalline calcium carbonate detergent was recently published [14]. ... these sulphur oxide compounds interact with oxidized ...

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US4175066A

the calcium carbonate particles When calcium carbonate is used in an aqueous medium, for example, for coating papers or for preparing aqueous paints, it is required that the calcium carbonate particles should have an excellent dispersibility. For example, when calcium carbonate is used for coating a paper, if the dispersibility thereof is poor, the viscosity and flowability of …

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WO/2014/189020 DISPERSANT FOR CALCIUM CARBONATE …

This dispersant for calcium carbonate is capable of providing a calcium carbonate slurry, which has a sufficiently low viscosity and good long-term stability, both by wet …

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Dispersant for grinding heavy calcium carbonate as well as …

The invention relates to a dispersant for grinding heavy calcium carbonate as well as a synthetic method and application thereof. The method comprises the following steps of: mixing water, acrylic acid, a co-monomer X and a co-monomer Y, and adding a reducer of an initiating system to prepare a dripping solution A; preparing a dripping solution B from water and an oxidant of …

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WO1992000347A1

A method for producing a high solids aqueous slurry of particulate calcium carbonate having highly stable aging characteristics, comprising dispersing in water at at least 70 % by weight solids, a finely divided particulate calcium carbonate, utilizing as a dispersing agent from 20 to 34 lbs/ton of dry mineral (expressed as 40 % actives), of a copolymer of acrylic acid and a …

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