Products

ROSIN

Rosin is a brittle, faintly aromatic solid, which may be transparent or slightly translucent and possesses a glassy fracture. It is insoluble in water, but soluble in many organic solvents including alcohols, ethers and esters, and aliphatic, aromatic and chlorinated hydrocarbons.

All rosin is purchased on a colour basis, which varies from pale amber to black. The lighter the colour, the more valuable the rosin.

The procedure for sample and colour grading is fairly simple: a portion of rosin is formed into a cube of 7/8 inch(22mm) sides. This cube is placed inside the cabin of Lovibond Tintometer and Standard Colour of the specific grade is compared with that of the cube. The standard colour is obtained by combination of glass slides of different shades of Red, Blue and Yellow . This is as per the procedure laid down in IS 553:1984.

PROCESS OF DISTILLATION

The resin from about 400 Tins (7.2 Tons.approx.) are emptied in to the Resin Pit. During winter resin is a bit hard to work, so 100-200 Litres of Turpentine Oil is mixed to dilute this resin. The Screw Elevator lifts this resin along with sakki (pine needles, bark pieces & other foreign particles) to mixing Vat. The capacity of the Mix Vat is 350-400 tins i.e. about 7.2 Tons. of resin. The resin is heated indirectly in this vat by passing steam through copper coils for 4 to 6 hours to melt the resin in it. The temperature is maintained upto 950 Celsius. 600-1200 Litres of Turpentine Oil (depending on the quality of resin) is also mixed in the mixing vat. 5 kgs. Common Salt is added. The molten resin is then stirred with Iron arms mechanically. The molten resin is then passed through 40-mesh (in one square inch, there are 40 openings ) stainless steel wire net to remove bigger impurities like pine needles, bark pieces etc.

From here the resin is pumped by centrifugal pump into a Rest Vat. The capacity of each rest vat is about 7.2 Tons. The resin is allowed to rest in the rest vat from 18 hours to 20 hours. During this rest period, the impurities and dust if present, settles down by gravity. The dust/impurities are removed through a bottom valve and sent for processing separately as inferior grades of Rosin. About 1.7 to 1.8 Tons. of resin from rest vat is carried to the compression chamber. From compression chamber it is carried to distillation kettle by steam pressure.

In the Distillation Kettle, the resin is cooked for 1-2 hours by indirect steam at pressure of 10kgs/cm . In Distillation Kettle, the molten resin remains in side the copper tubes and steam remains in the outside. In this process the Turpentine Oil and moisture present in the resin gets evaporated and condensed in an condenser. The T.Oil is collected in a T.Oil Separator.

The Rosin left in the distillation kettle is taken out at 1650 Celsius & collected in trolleys, wherein about 100-200 grams of Oxalic Acid ( depending on the quality of resin) is mixed to increase the transparency / shine of Rosin. This Rosin is then packed in Tin Patra Barrels of 200 Kg. capacity.

Current Grades available:-

X - Extra White, WW – Water White, WG – Window Glass,
N–Nancy, M – Mary, K – Kitty, H – Harry, D – Dark & B – Black.

USES Paper Sizing, printing inks, protective coatings, adhesives, varnishes and lacquers, grinding and dispersion of pigments, plasticiser & tackifier in rubber and chewing gums

(Packaging in 200 Kg (Net in Patra Barrels)

Road Transport Available:

The Rosin is obtained from Pinus roxburghii (Chir pine)
The rosin is obtained by Olstee Process
The testing has been done by the process as per IS:553:1984 (except B Grade)
The product (Except X & B Grade) has been BNIS certified vide licence No 9099801

SPECIFICATION OF NONYL PHENOL

SPECIFICATION OF MALEIC ANHYDRDE 99.5% BRIQUETTE