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Dextrin
INTRODUCTION

Dextrins are degradation products obtained by treating starch under carefully controlled conditions. Dextrins are made by heating starch in dry form with small amounts of catalyst.

PRODUCTS INFORMATION

White Dextrins have a appearance of the native starch and have solubilities varying from 25-80%. It forms a soft, light coloured get on cooling.Yellow Dextrins ranges in colour from pale amber to dark brown and have high water solubility. They are used to produce high solid concentration pastes. They give very tacky solutions.

 

 
APPLICATIONS
I

Dextrins do not reacts with Chemicals. They are very much useful and play important role to various Industries.

II

Textile Industries: In textile printing dextrins are used as thickner,Copper rolls get long life in sizing and increases, adhesiveness in finishing. They give desires feel to the fabric.

III

Dyes: Dyestuff industry is used as a extenders.

Iv Pharmaceuticals: Dextrains are used as a neutrient source in preparations of certain antibiotics.
V Foundries : For good care binding as a binder, it imparts great compressive strength. To give good strength to moulds and to prevent deformation of the core. They do not make the core too dense. So there are no trapped gases which cause blowholes.
VI

Dry Distemper : Dextrins are largely used in dry distemper 2 to 3 % of Dextrins with chalk and pigments act as a carrier and impart good adhesiveness of colour to the wall.

VII Grinding Wheel: Binder for different constituents forgrinding wheel. Dextrin are also used a binder for water colour Mineral aggregates, ink colour binder, laminates, fibers paper bags & boxes, paper tubes and cones, postage stamp, gum tape, fireworks, cigarettes Crayons, polishing dyes. Leather linoleum wall paper in silvering compounds and so many other industries use dextrin.
 
Ambuja Dextrin Typical Specifications
White Dextrins Yellow Dextrins
Grade Aw1 Aw2 Aw3 Aw4 Ay1 Ay2 Ay3
%Moisture Max 10.00 10.00 10.00 10.00 10.00 10.00 10.00
Cold Water soluble on dry basis  25-40 40-60 65-80 95-99 80-90 90-95 95-99
Colour white to slight creamish Yellow to golden yellow
Free Acidity - 5 5 8 6 7 8
PH of 10% Solution 3 to 4 or as required    - - -
Sulphate Ash 0.4 0.4 0.5 0.5 0.5 0.5 0.5
Seive Retantion % above 100 mesh seive 1.0 1.0 1.0 1.0 1.0 1.0 1.0
Customized specification can also be achieved
 
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