Construction Chemicals

NATROSOL™ 250 HHX PHARMA
Natrosol™ 250HHX Pharma are extra fine grades for easier dispersion which are high efficiency, non-ionic, water soluble polymers used for thickening and rheology control where a glyxol treatment cannot be tolerated.

Natrosol™ hydroxyethylcellulose (HEC), a nonionic, water-soluble polymer, is a white, free-flowing granular powder. It is made by reacting ethylene oxide with alkali-cellulose under rigidly controlled conditions.

Natrosol™ 250 HHBR is a hydroxyethylcellulose surface-treated with glyoxal. Used as a non-ionic, water-soluble, high efficiency thickener, water retention aid and rheology modifier in all types of water-based paints and surface coatings. Provides very good color acceptance, color development, and viscosity retention on tinting. Exhibits mechanical and chemical stability and controls rheology before, during and after application. It can be used as a protective colloid, stabilizer and suspending agent. Offers very good pseudoplastic flow behavior and wide compatibility with other materials such as emulsion polymers, natural and synthetic gums, emulsifiers, defoamers, pigments, surfactants and preservatives. Natrosol™ 250 HHBR by Ashland Specialty Chemical shows fast dispersion and easier dissolving in water.Product TypeRheology Modifiers / Thickeners > Cellulosics, Non Associatives > Hydroxyethyl Celluloses (HEC)

Natrosol HEC is easily dissolved in cold or hot water to give crystal-clear solutions of varying viscosities. Furthermore, low to medium molecular weight types are fully soluble in glycerol and have good solubility in hydro-alcoholic systems containing up to 60 percent ethanol. Natrosol HEC is generally insoluble in organic solvents.
Natrosol HEC is used as a binder, bond strengthener, cement extender, coating and optical brightener aid, coating polymer, filtration control additive, green strength enhancer, protective colloid, rebound or slumping reducer, rheology controller and modifier, lubricity and workability enhancer, suspension and stabilization agent, shape retention enhancer and thickener.
Natrosol HEC has applications in multiple markets including adhesives and sealants, advanced ceramics, building and construction, ceramics, pottery and porcelain, commercial and institutional, oil and gas technologies, metal castings and foundry, paint and coatings, personal care, pharmaceutical and pulp and paper.

Natrosol 250 hydroxyethylcellulose (HEC) is a series of off-white powders that are easily dispersed and dissolved in cold or hot water, to produce solutions of varying viscosities.
Natrosol™ 250 HBR by Ashland Specialty Chemical is a water soluble hydroxyethylcellulose. Provides superior resistance to biodegradation, very good balance of ease of manufacture, thickener efficiency, color acceptance and open time. It is treated to delay hydration of the particles. Offers compatibility with other materials, such as emulsion polymers, natural & synthetic gums, emulsifiers, defoamers. Used as a non-ionic thickener, water retention aid and rheology modifier in water-based adhesives. Imparts very good flow properties. Performs in the emulsion and suspension polymerization of many vinyl polymers. Natrosol™ 250 HBR is also used in tile adhesives, wallpaper, latex and plywood adhesives.

Natrosol™ 250 HHBR is a hydroxyethylcellulose surface-treated with glyoxal. Used as a non-ionic, water-soluble, high efficiency thickener, water retention aid and rheology modifier in all types of water-based paints and surface coatings. Provides very good color acceptance, color development, and viscosity retention on tinting. Exhibits mechanical and chemical stability and controls rheology before, during and after application. It can be used as a protective colloid, stabilizer and suspending agent. Offers very good pseudoplastic flow behavior and wide compatibility with other materials such as emulsion polymers, natural and synthetic gums, emulsifiers, defoamers, pigments, surfactants and preservatives. Natrosol™ 250 HHBR by Ashland Specialty Chemical shows fast dispersion and easier dissolving in water..

Natrosol™ 250 HHBR is a hydroxyethylcellulose surface-treated with glyoxal. Used as a non-ionic, water-soluble, high efficiency thickener, water retention aid and rheology modifier in all types of water-based paints and surface coatings. Provides very good color acceptance, color development, and viscosity retention on tinting. Exhibits mechanical and chemical stability and controls rheology before, during and after application. It can be used as a protective colloid, stabilizer and suspending agent. Offers very good pseudoplastic flow behavior and wide compatibility with other materials such as emulsion polymers, natural and synthetic gums, emulsifiers, defoamers, pigments, surfactants and preservatives. Natrosol™ 250 by Ashland Specialty Chemical shows fast dispersion and easier dissolving in water.

Carboxymethyl cellulose (CMC) or cellulose gum^[1] is a cellulose derivative with carboxymethyl groups (-CH₂-COOH) bound to some of the hydroxyl groups of the glucopyranose monomers that make up the cellulose backbone. It is often used as its sodium salt, sodium carboxymethyl cellulos.
CMC is used in food under the E number E466 or E469 (when it is enzymatically hydrolyzed) as a viscosity modifier or thickener, and to stabilize emulsions in various products including ice cream. It is also a constituent of many non-food products, such as toothpaste, laxatives, diet pills, water-based paints, detergents, textile sizing, reusable heat packs, and various paper products. It is used primarily because it has high viscosity, is nontoxic, and is generally considered to be hypoallergenic as the major source fiber is either softwood pulp or cotton linter.^[3][4] CMC is used extensively in gluten free and reduced fat food products.^[5] In laundry detergents, it is used as a soil suspension polymer designed to deposit onto cotton and other cellulosic fabrics, creating a negatively charged barrier to soils in the wash solution. CMC is used as a lubricant in artificial tears.
CMC is also used as a thickening agent, for example, in the oil-drilling industry as an ingredient of drilling mud, where it acts as a viscosity modifier and water retention agent. Sodium CMC(Na CMC) for example, is used as a negative control agent for alopecia in rabbits.
 
Insoluble microgranular CMC is used as a cation-exchange resin in ion-exchange chromatography for purification of proteins.^[6] Presumably, the level of derivatization is much lower, so the solubility properties of microgranular cellulose are retained, while adding sufficient negatively charged carboxylate groups to bind to positively charged proteins.
CMC is also used in ice packs to form a eutectic mixture resulting in a lower freezing point, and therefore more cooling capacity than ice.^[7]
Aqueous solutions of CMC have also been used to disperse carbon nanotubes. The long CMC molecules are thought to wrap around the nanotubes, allowing them to be dispersed in water. In conservation-restoration, it is used as an adhesive or fixative (commercial name Walocel, Klucel).
CMC is used to achieve tartrate or cold stability in wine. This innovation may save megawatts of electricity used to chill wine in warm climates. It is more stable than metatartaric acid and is very effective in inhibiting tartrate precipitation. It is reported that KHT crystals, in presence of CMC, grow slower and change their morphology.^[8] Their shape becomes flatter because they lose 2 of the 7 faces, changing their dimensions. CMC molecules, negatively charged at wine pH, interact with the electropositive surface of the crystals, where potassium ions are accumulated. The slower growth of the crystals and the modification of their shape are caused by the competition between CMC molecules and bitartrate ions for binding to the KHT crystals (Cracherau et al. 2001).
In veterinary medicine, CMC is used in abdominal surgeries in large animals, particularly horses, to prevent the formation of bowel adhesions.
CMC is sometimes used as an electrode binder in advanced battery applications (i.e. lithium ion batteries), especially with graphite anodes. CMC''''''''s water solubility allows for less toxic and costly processing than with non-water-soluble binders, 

Sodium lignosulfonate (lignosulfonic acid, sodium salt) is used in the food industry as a de-foaming agent for paper production and in adhesives for items that come in contact with food. It has preservative properties, and is used as an ingredient in animal feeds 

Usage:

• Can be used as plasticizer in making concrete
• could be use in lead batteries.
• could be used as filler & Binder in ceramic tiles.
• could reduce viscosity of mineral slurries used on oil drilling & many other applications.