Applications-

• Binder modifies the properties of coating color ( e g rheology, water retention) or coating
• Binder are either modified natural products ( I e starch or protein based) or synthetic polymers. They form a film, whose properties combine with those of the pigment to give the desired coated paper properties.

Products ;

Hydrocarb 90-OG : Natural, ultrafine calcium carbonate powder, manufactured from a high purity,white limestone

Applications-

1. • Pigment improves paper smoothness, brightness ,opacity and ink absorption.
   • It is used as Pigment in the Coating application and as filler in the wet end application.
   • Carbonate may be PCC or GCC.
   • PCC used for wet end application due to its less abbrassive particles,high bulky and high brightness characteristics.
   • GCC is widely used in the coating application because of its lower cost and low viscosity(better rheology) characteristics.
   • The particle size decides the suitability of the product for pre-coating or top-coating application.
   • The Calcium carbonate in the powder form need to be re-dispersed with the help of dispersing agent.

Products:

Emes-EH, Emes-TEH

Is an esterified potato starch which can be used in the wet end by means of spraying to increase the strength and ply bond in case of boards

Applications:

1. • Spray starches are used to impart z-directional strength to the paper.
   • It helps in reducing the delamination of the plys of the board.
   • These are applied on the paper machine wire through the spray bars while the web is formed.
   • Used for improving the Ply bond of the board.
   • In special cases it is used for improving the Z-directional strength or to reduce the de lamination tendency between plys.
   • The gel temperature is a very important factor for the performance of the starch.
   • The stability and the settling rate are the other factors decides the trouble free operation in using this starch.
   • By using this starch the spring-back tendency of the board improves.This is a important parameter requirement in Cigarette board.

Product-Dynazyme-B

• Bleaching Enzyme-Dynazyme-B is an enriched xylanase preparation which will selectively hydrolyse cellulose and hemicellulose thus helping in delignification.

Applications

• Facilitates the bleaching of kraft, soda and sulfite pulps. Hydrolyzes the hemicellulose fraction in wood fibers, loosening the pulp structure, thereby enhancing lignin extraction, reducing chemical consumption, and attaining higher brightness in virgin pulp bleaching processes.
• Enhances fiber strength, reduces refining energy requirements, and increases inter-fiber bonding through fibrillation while avoiding fiber breaking.
• Smoothes pulps manufactured from tropical hardwoods reducing the vessel picking which occurs during printing. This is particularly important when manufacturing writing grade papers using eucalyptus pulps.
• Eliminates cellulose fines that are present in some non-wood pulps such as sugar cane bagasse, bamboo, straws and grasses. Those fines unnecessarily consume bleaching chemicals, decrease paper strength properties and cause dusting problems during paper rolling and conversion.
• Reduces AOX levels in the effluent thus reduces the BOD: COD ratio.

Sodium chlorate(NaClO3) is an strong oxidising agent.When pure it is white crystalline powder readily soluble in water.It is hygroscopic. It decomposes above 250oC to release oxygen and leave sodium chloride.

Applications:

It is a basic raw material used for generation of Chlorine Dioxide, which is an Oxidising Bleaching agent.
Chlorine dioxide is produced by a chemical reaction, in which sodium chlorate, sulfuric acid and sulfur dioxide are the reactants. Spent acid is obtained as a by-product with the release of heat. The spent acid is a sulfuric acidic solution of sodium sulfate that, quite often, can be utilized. The heat, on the other hand, has to be dissipated to maintain optimal conditions.

The chemical reaction could be summarized as follows: 2NaCIO3+H2SO4 +SO2 2ClO2 + 2 NaHSO4 + heat

The chlorine dioxide gas obtained in this way is collected from the reactor and washed before being absorbed in water and stored as an aqueous solution.

Products:

Dynajet

It is a synthetic surface sizing agent used for improving printability and surface strength.

Applications:

1. Increased production of coated grades.
2. Usage of higher filler content.
3. Switching over from the usage of GCC to PCC as the filler.
4. Increased usage of recycled paper.
5. Closure of mill backwater loops.
6. Higher demands from printing technology.
7. Higher demands for the packaging materials.

Products:

Starches with different nitrogen content are available for different purposes.

Application:

1. These starches are having high bonded nitrogen content (90-95%) which helps in higher starch adsorption on to the fiber
2. Normally,the Cationic starch is being used for improving the dry strength of paper.
3. The bounded nitrogen content decides the performance of the cationic starch.
4. It also helps in improving the filler and fibre retention.
5. In the internal sizing system, starch has got the synergetic effect with AKD in its performance.
6. Reduces the linting problem by improving the filler& fines fixation through better internal bonding .
7. The Cationic starch is used in the AKD and ASA emulsification process.
8. Potato based cationic starches by nature are Amphoteric due to the Bounded phosphate group available in the starch molecule.
9. The performance of Potato starch is better due to its high viscosity,stability and surface strength.
10. The Tapioca starch is coming closer to that of Potato starch in properties and performance.
11. Improves the stiffness of the paper/paper board.