CALGON N
Metatags : Kalgon N, Kalgon PT, sodiumhexameta phosphate, sodyum hekza meta fosfat, SHMP, E 452 i, Metaphosphoric acid, hexasodium salt
Cas No: 10124-56-8CAS NO:10124-56-8, calgon n, kalgon n, sodyum hegza meta fosfat, sodyum hekza meta fosfat, sodyum hexametafosfat, SHMP, E 452 i, Metaphosphoric acid, hexasodium salt, calgon, Cas no : 10124-56-8, sodium hexametaphosphate, sodium, hexa, meta, fosfat
Kalgon n, sodyum hegza meta fosfat, sodyum hekza meta fosfat, sodyum hexa meta fosfat, SHMP, E 452 i, Metaphosphoric acid, hexasodium salt
CAS NO:10124-56-8
Sodium polyphosphates
CALGON® N (Powder)
CALGON® N new
CALGON® 322
CALGON® 322 new
Potassium phosphate
CALGON® TK
For trademark reasons in some countries the label POLYRON or CALFORT is used.
Advantages
1) High capacity for binding Ca- and metal ions
2) Rapid viscosity reduction in disersing process
LOPON as Organic Dispersant
Phosphonate
LOPON® P
LOPON® W
LOPON® PO
Polyacrylate
– Sodium-Polyacrylate
LOPON® LF
LOPON® 800
LOPON® 890
– Potassium-Polyacrylate
LOPON 895
– Ammonium-Polyacrylate
LOPON 885
The LOPON specialities offer following advantages
High calcium binding properties
High dispersing effectivity
Good pigment wetting
Good leveling
Excellent water resistance
Good storage stability
Excellent scrub resistance
The LOPON organic dispersing specialties are recommended for
Water based interior paints
Water based exterior paints
Varnishes
Plasters
Silicate paints
Silicone Resin Paint
Pigment Slurries
LOPON P as phosphonate dispersing agent for roof tile paints, silicone resin paints and pigment pastes.
LOPON P offers following advantages
Excellent lime binding efficiency
Excellent pigment wetting characteristics for inorganic and organic pigments
Excellent water softening properties
Prevention of rub-out
SHMP is used as a sequestrant and has applications within a wide variety of industries, including as a food additive in which it is used under the E number E452i. Sodium carbonate is sometimes added to SHMP to raise the pH to 8.0-8.6, which produces a number of SHMP products used for water softening and detergents. Also used as a dispersing agent to break down clay and other soil types.
CALGON N is a dispersing agent for emulsion paints, plasters and adhesives. This white powder is a slightly alkaline sodium polyphosphate of medium chain length. It improves the storage stability when applied in combination with polyacrylates like LOPON® 890, and due to its high dispersing effectivity, optimal particle size is rapidly achieved. This product is suitable as a dispersing agent for waterborne paints, slows down sedimentation, reduces water hardness and offers a good binding capacity with regard to calcium and heavy metal ions. It deflocculates pigments and fillers in aqueous suspensions. Thereby, high solid contents of emulsion paints with low viscosity can be achieved.
Dispersants
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CALGON® and LOPON® specialties and phosphates for water-based interior and exterior paints.
Tetrapotassium pyrophosphate (TKPP) and potassium tripolyphosphate (KTPP) are used extensively in latex paint formulations to utilize their superior dispersion properties. In latex paints containing zinc oxide, dispersants such as the condensed phosphates are a necessity.
CALGON®, LOPON®are powder and liquid products for binding calcium and metal ions, for the dispersion of fillers and pigments, for the production of highly filled interior paints as well as exterior paints.
CALGON® and LOPON® Range as Dispersing Agents
Usually, the first step in the production of paints based on aqueous polymer dispersions involves the preparation of an aqueous mill base and hence a dispersing process. The tasks of this process are to wet, to physically separate and, finally, to stabilize the individual primary pigment particles in the suspending medium, in this case water. The pigment particles are thereafter present in a homogeneously dispersed from and must not be allowed to re-agglomerate. Generally, the quality of the dispersing process has a direct bearing on the optical and rheological properties of the paint, as well as those properties that affect the paint’s storage stability.
Dispersing agents are used to assist the mechanical process of dispersing solid, insoluble pigments in water. These dispersing agents are mostly polymeric substances which dissociate into ions in aqueous media. The only major factors governing the efficacy of a dispersing agent are the polyanions formed in this process. The part played by the counter-cations is relatively minor.
Owing to the polar nature of the pigment and filler particles (surface-linked hydroxyl groups, adsorbed water molecules), the polyanions are adsorbed on the surface of the solids. The total charge of the surface becomes anionic, thereby resulting in electrostatic stabilization. When polymers with higher molecular weights are used, steric stabilization occurs as well. This mechanism encourages the formation of discrete particles, which repel one another because of their uniform charge. The physical phenomena in the microscopic range manifest themselves macroscopically through a reduction in the viscosity of the suspension. This property is used to determine the quantity of dispersing agents needed in order to stabilize the system.
The dispersing agents most commonly used are polyphosphates and polyacrylates. Please contact us for formulation suggestions and further information.
CALGON®-Polyphosphates
By heating certain orthophosphates to temperatures above 500 °C in a melting furnace, linearly linked structures – so-called polyphosphates – are formed by a condensation reaction.