Clear Aqueous Shellac Solution or Varnish

Clear aqueous shellac solution or varnish provides

(l) A clear aqueous shellac solution or varnish

(2) A shellac solution or varnish capable of yielding tough adhesive, permanently flexible water-resistant films.

(3) A shellac-solution or varnish which is adapted to be further modified by the incorporation therein of suitable pigments, fillers, extenders, and other substances to provide paints, pastes, and other useful products. In other words, a clear shellac solution or varnish is useful in and of itself as a coating composition or adhesive but also as a vehicle for other products such as paints, etc.

Aqueous shellac solutions have been and are generally used as leather and shoe dressings, paper and metal coatings, lithographic varnishes, floor waxes, inks and the like. Clear aqueous shellac varnishes which are highly adhesive in character and yield water resistant films on evaporation.

Due to the swelling action of water on wood, these shellac varnishes should not be used on unprimed wood. However, they can be used over a rosin or drying oil primer to produce a finish comparing favorably with that obtained from a non-aqueous alcohol shellac varnish. They are equally suitable for coating metal and paper objects and as a binder for drawing and printing inks.

Furthermore, they are especially suitable for coating stone, plaster, brick or other porous surfaces. Since they are not affected by further dilution with water, they can be applied to damp concrete or plaster walls. When applied to brick, concrete or plaster walls the varnishes described in this application usually dry to produce a tough tenacious film which does not lift or peel as does a drying oil or varnish film when applied to this type of surface.

Characteristics of the clear aqueous shellac solution or varnish

Ambient Temperature (27 +/-2°C)

Specifications	SHELLAC
Color	Clear / Golden
Finish	Smooth & Glossy
Flammability	Non-flammable under normal use conditions
Flash Point	NA
Usage viscosity	Ready to use 14-18 S
Operating temperature range
Oil Resistance	Good
Durability	Excellent
Percent solids by weight	28%
Percent solids by volume	22%
Percent pigment by volume	NA
Color fastness	Excellent
Adhesion	Excellent
Salt spray corrosion	NA
Mineral spirits resistance	Very good
Gasoline resistance	Excellent
Pencil hardness	500g
Drying Time	Touch dry in approximately 20 minutes and denibbable for recoating in approximately 30 minutes at 20°C.
Coverage	The coverage of these products is variable and is dependant on various factors, such as porosity of timber, application method, etc.
Application method	Cloth or Pad
Thinners	Water / 20653
Equipment Cleaning	Use Methylated Spirits
Surface condition	The surface should be stable, firm, dry and free of dust, sand, dirt, grease and oil.
Storage	Store at room temperature. Keep lid tightly closed and away from sources of heat or sunlight. 12 month shelf life.
Health and Safety	Non Hazardous