Coal Tar Pitch Modified Polyurethane Sealant

COAL TAR PITCH MODIFIED POLYURETHANE SEALANT Hind Sealant.PPU is Two Component Coal Tar Pitch Polyurethane Modified Sealant, black in colour. Whenthe two components are mixed together prior to application, a chemical reaction is initiated which cures inpresence of moisture to a firm, flexible rubber like seal with excellent adhesion to concrete, masonry, wood,glass, metal etc. It is capable of withstanding repeated extension, compression & cyclic movements without lossof adhesion and resists deterioration by weathering sunlight, ozone, water, salt, oils and fuels.USES Hind Sealant.PPU is recommended for protection of Sealing of expansion, contraction & constructionjoints in building structure such as Basements, subways, retaining walls, floors, external walls andcladdings of high-rise buildings. Sealing of dynamic structural cracks. Glazing joints of window, door frame and curtain walls. Sealing of joints in traffic areas such as Bridges, roads and car parking areas.APPLICATIONSurface PreparationPreparation of surface is the most important step before application of sealant to get best results and to avoidfailure. The joint surface must be dry, free from dust, coatings, bituminous mastics, concrete curing agents,mould release agents, oils, greases and loose particles. Clean the joint surface by wire brush and sanding withemery paper. Remove dust by compressed air or paint brush. Wipe out oil and grease by solvent soaked cloth(such as Xylene, Toluene or Acetone).Masking TapeApply masking tape such as self-adhesive polyethylene, cellophane or cloth tape on both edges of the joint. It isused to improve the neatness of the finished seal by protecting the face edges of the joint. It may be removedimmediately after tooling of the sealant.MixingTwo component Hind Sealant.PPU sealant are packed in pre-weighed quantity as per the mixing ratio. Mix thematerial of individual container first and then mix together and stir it thoroughly to a uniform, homogenousblack colour. Mixing can be done manually with spatula / palette knife of special flat stirrer attached to a lowspeed electric mixer less than 500 r.p.m. Apply the mixed sealant by means of a spatula or by filling into aplastic cartridge which is then placed into the hand held causing gun into the joint.Tooling and finishing:It is desirable that a smooth surface is obtained. Tool the sealant by pressing the puffy knife or flat tool againstthe sealant surface, moving along the length of the joint. Tooling breaks air bubbles and exposes any air pocketspresent. Tooling compresses the sealant, thus promoting adhesion to the joint sides. After tooling the maskingtape should be removed immediately. PROPERTIESAspect                                                                Black PasteSpecific Gravity                                                  1.10 approxMixing Ratio                                                      1 : 1 by weightApplication time (pot life) at 30 degree C            45-60 MinutesInitial setting time at 30 degree C                       4 HoursPACKING1 Kg. & 2 Kg. KitSHELF LIFE6 months in original unopened container. Do not expose or open container to high humidity conditions.HANDLING PRECAUTIONHind Sealant.PPU is non-toxic but ingestion is to be avoided. Any splashes to the skin must be washed withwater. If contact with eyes occurs, wash well immediately with water and seek medical advice.