Product Description
Sodium carboxymethyl cellulose (CMC-NA) is a kind of organic matter, chemical formula is [C6H7O2(OH)2OCH2COONa] N, CMC is the carboxymethylated derivative of cellulose, is the most important ionic cellulose glue. Sodium carboxymethyl cellulose is usually made of natural cellulose and caus tic soda and a chloroacetic acid reaction after the preparation of an anionic polymer compound,molecular weight from thousands to millions. Cmc-na is a white fibrous or granular powder, odorless, tasteless, hygroscopic, easy to disperse in water to form a transparent colloidal solution.
Sodium Carboxymethyl Cellulose (also referred as CMC and Carboxy Methyl Cellulose) can briefly be described as an anionic water-soluble polymer produced from naturally occurring cellulose by etherification, substituting the hydroxyl groups with carboxymethyl groups on the cellulose chain.
Being readily dissolved in hot or cold water, Sodium Carboxymethyl Cellulose CMC can be produced in different chemical and physical properties.
These properties can affect the performance of the product (CMC) in the application, furthermore can be essential for optimizing the production costs.
Application
CMC Paint Grade:
CMC is macromolecule compound with multichain, and the linear chain will open, spread, interact and form the network collide after the water swelling. Meanwhile, the macromolecule chain with oxhydryl has hydration with water and twine with each other, and then increase the water phase viscosity. It has the excellent compatibility in water or in organic solvent, as well as the pigment. It used as thickener, dispersant and stabilizer in coating industry. It usually can replace the Hydroxyethyl Cellulose HEC in Latex paint.
1. Application in regular coating
CMC' s oxhydryl macromolecule chain has hydration with water and twine with each other, and then increase the water phase viscosity. It has the excellent compatibility in water or in organic solvent, as well as the pigment. It also can greatly improve the viscosity and rheology, and it used as thickener, dispersant and stabilizer in coating industry. CMC which is applied in water-solube coating will show the effect as follows:
*Good water resistance and filming durability;
*High fullness of filming, well-distributed of filming, and highlight acquirable,
*As the stabilizer, it can prevent the paint-coat from being apart due to the abrupt change of the temperature ;
*As the protective colloid, it can maintain the stability of coating system in the wider range of pH value;
*As the thickener, it can make the coat well-distributed, and achieve to the expected viscosity for storage and construction, and avoid the serious stratification during the period of storage.
*Enhance the coat leveling property, anti splash and anti sagging, so that improve the construction workability;
*Make the additives like pigment and filler be dispersed in the coat and the coat will show the excellent effect of pigment adhesion.
2. Application in latex paint
Latex paint mainly composed of polymer water dispersion and pigment water dispersion. Its viscosity has the influence on settleability, brushability, roll coating, fullness of film, levelling property and the sagging property on the film vertical surface, so it will often adjust the viscosity and rheology of latex paint. While CMC has the advantages of good rheology, small resistance of brush coating, easy for construction, and thus it used as the stabilizer, thickener and water retention agent.
*Good thickening effect, high efficiency for latex paint thickening
*Be with stability property., and make the paint a certain viscosity with no residue in storage;
*Make the moisture permeate the porous substrate slowly, and maintain the water when the latex content is high;
*Less limitation on paint formula, small effect by collide type, dispersant and surface active agent;
*Coating finishes, and the water action with the CMC will terminate. Regain the viscosity and avoid sagging.
3. Application in casting paint
CMC is macromolecule compound with multichain, and the linear chain will open, spread, interact and form the network collide after the water swelling. CMC can interact with the sodium base bentonite, and it not only improve the suspending power of sodium base bentonite, but also dramatically reduce the volume of the sediment agglomeration, furthermore, it prevents the fire intolerant aggregate from sinking. Thus, it always used as to enhance the suspensibility rate of the casting paint, and improve the paint viscosity.
*Excellent water-solube viscosity increasing, and improve the coating viscosity and rheology;
*Good solubility and dispersion, making the solids suspend in the carrier liquid;
*Impel the fire intolerant powder suspend and avoid settling, layering and the carrier liquid excessive penetration into the molding material;
*Promote the spreading and covering power of paint, and enhance its brushing property and leveling property;
*The powder bonds with each other after dried, and adheres firmly on the inside and outside surface
4. Special products for coating grade
C2000R has a good ability to resist divalent ions and the glue with C2000R can enhance the stability of white cement and not easy to be mildewed.
Detergent grade CMC:
CMC can be used as THICKENER / thickening agent for liquid detergents, thickening agent for soap.
Detergent grades are mainly used in powder and cream type for detergent production, as well as in soap making industry.
With the character of emulsifying and gel protection, CMC will produce the anion during washing and it makes the washed surface and the dirt granule be negatively charged. It prevents re-sticking of the dirt which will be removed by detergent during the cleaning rinsing process. So, the dirt granule has the phase separation property in aqueous phase, and has the repellency with the washed material surface of solid phase. Place dirt then deposit on the washed material, and it can make the white textile keep the whiteness and colored textile bright. CMC can replace hydroxyethyl cellulose (HEC) and Hydroxy propyl methyl cellulose (HPMC) as THICKENER for liquid detergents, which can reduce production cost.
In making soap, adding an appropriate amount of CMC helps to greatly improve the quality of soap. It enables soap to be pliable and flexible and thus convenient for pressing and processing.
The different types of detergent grades of CMC are produced in the limits of detergent grade specifications but they will be divided into different variations due to customer demands. The customer satisfaction, price sensitivity and other expectations are fully covered by these variations.
CMC PAC Oil Drilling Grade:
CMC and PAC can reduce water loss, and increase viscosity in drilling fluid, cementing fluid and fracturing fluid. They play the roles of protecting the wall of well, taking drilling trifles, protecting drilling bit, preventing mud loss and increasing drilling rate.
Usage: add to mud directly or glue solution preparation.
Addition: 0.1-0.3% in fresh water mud; 0.5-0.8% in salt water mud.
CMC Food Grade
CMC is widely used in food industry, it play the roles of taste improvement, thickening and stabilization when used in various kinds of dairy drinks and seasonings. As an additive of molding, taste improvement, anti-fragmentation, water retaining and tenacity strengthening, CMC is also used in ice cream, bread, cake, biscuit, instant noodle and fast paste foods.
The recommended addition is 0.3-1.0%.
CMC Textile Grade
Is ready to replace traditional sodium alginate with about half of the cost.
CMC Ceramic Grade
Can be used for water preserving in concrete paste and color paste, as adhesive in concrete, sand, and in adhesive layer for wall paper installation.CMC is used for ceramic embryo, glazing pulp and colored glaze in ceramic industry.
Addition: 0.03%-0.2% used in ceramic embryo; 0.05-0.2% used in glazing pulp; 1.4-4.0% used in colored glaze.
CMC Toothpaste Grade
CMC has an efficiency of adhesion and molding when used in toothpaste, and stabilizes the quality of toothpaste owing to good compatibleness.
The recommended addition is 0.5-1.5%.
CMC Papermaking Grade:
Our CMC can totally replace Finnfix 2, Finnfix 5, Finnfix 10, Finnfix 30, CPKelco CMC, Bondwell QP-10, QX-5, QX-10
CMC displays many excellent performance in paper-making technology. it is higher valued by the majority of paper engineers and is widely used in the production of paper and paperboard, such as paper and paperboard coating process, coating rheology modifier, water - retention agent, film-forming agent, auxiliary adhesives, wet end retention enhancers and surface sizing agents, grinding aids, filler modifier and the flocculating agent which used in waste water treatment etc. We have different paper making grades of CMC to meet the different customers' requirements.
Packaging & Shipping
25kg/bag
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