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Dewaxed Shellac

Listing ID #1378456

  • Supply Type Exporter, Supplier
  • Preferred Buyer Location All over the world

Dewaxed Shellac (Solvent Process) : In this process, the seedlac and solvent, usually ethyl alcohol, are mixed in a dissolving tank, refluxed for about an hour and then filtered to remove impurities.....
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  • Member Since 14 Years
  • Nature of Business Manufacturer
  • Year of Establishment 2006

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Dewaxed Shellac (Solvent Process) :
In this process, the seedlac and solvent, usually ethyl alcohol, are mixed in a dissolving tank, refluxed for about an hour and then filtered to remove impurities. The filtered resin is sent through evaporators that remove the alcohol solvent, rendering it a viscous liquid. This liquid is then dropped onto rollers, which force it into sheets. The sheets are then are dried and flaked apart. The solvent process lends itself to manufacture of different type of shellac containing varying percentage of shellac wax. Dewaxed or partly dewaxed shellac may be manufactured by this process.
Dewaxed shellacs have much better transparency and moisture resistance.
Grades of dewaxed shellac :

  • SSF Lemon - Rich Yellow-Orange in colour
  • SSF Orange - Deep rich Yellow Orange colour tones.
  • SSF Garnet - Deep Rich Brown-Red cast flake shellac. Garnet is the darkest color we carry. Used to highlight dark woods like walnut
  • SSF Super Blonde - It is the standard light colored shellac. It imparts a slight golden tone to the wood.
  • SSF Blonde - Light Pale Transparency. Blonde has a little more golden color than Super Blonde.

Application :
Dewaxed Shellac is necessary if the shellac will be used as a primer/sealer, undercoater or transitional coating.
A Shellac seal coat (made with dewaxed shellac) may be topcoated by almost any other clear coating or with paint.
(always test materials for compatibility in you application.)


Specifications

Acid Value (DAB 9) 65-80
Ester Value (DAB 9) 125-160
Saponification Value (DAB 9) 190-230
Melting Range (DAB 9) 65oC-85oC
Wax Content (USP XXIII) 0.20% max.
Moisture -- 2% max.
Insolubility in Hot Alcohol -- 0.10% max.
Arsenic -- 1.5 PPM max.
Heavy Metals as Pb -- 10 PPM max.
Rosin Content -- Nil
Orpiment -- Nil

Comparison Of The Colour Index Of Various Grades

LEMON ORANGE GARNET BLONDE SUPER BLONDE
Colour Index(Gardener in 20% Ethanol solution) 14-15 15.5-17 >18 11-12.5 8-9.5
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