Sealant coalings

Hydrocarbon resin is a broad term that is usually used to describe a low molecular weight thermoplastic polymer synthesized via the thermal or catalytic polymerization of coal-tar fractions, cracked petroleum distillates, terpenes, or pure olefinic monomers. These resins are used extensively as modifiers in the hot melt and pressure sensitive adhesive industries. They are also used in numerous other appHcations such as sealants, printing inks, paints, plastics, road marking, carpet backing, flooring, and oil field appHcations. They are rarely used alone. 

Other uses for coal-tar pitch include production as a binder for foundry cores, as a sealant for dry batteries, and in the manufacture of clay pigeons. PeUeted pitch used as the binder in foundry cores is a hard pitch suppHed as spherical granules which are formed by a spray-cooling process. Clay pigeons consist of disks molded from a mixture of hard pitch and a mineral filler such as clay or limestone dust. 

Adhesives and sealants Aluminum forming Asbestos manufacturing Auto and other laundries Battery manufacturing Coal mining Coil coating Copper forming... 

Coal tar pitch is the most widely used resinous extender for epoxy resins. It is primarily used in surface coating formulations, but can also be used as a cost reducer and flexibi-lizer in epoxy adhesives and sealants. In addition to the increase in flexibility (and reduction in thermal and chemical resistance), coal tar pitch extenders provide excellent water resistance. Their primary applications, therefore, are often in the marine, pipe, tank, and general industrial maintenance areas. 

Pitch-polyurethane sealants. Polyurethane sealants can be formulated in combination with pitch or coal tar in order to impart the property of fuel and oil resistance. Such sealants comply with British Standard BS 5212 and US Federal specification SS-S-200E. 

In the case of vertical and inclined joints, a shore A hardness of 15-30 is acceptable. Sealants used for pedestrian pavements, or sidewalks, require a minimum hardness of around 25 to withstand pedestrian traffic loads, particularly penetration by stiletto heels. Coal-tar-modified sealants used for airport runways should have a hardness range between 5 and 10. A shore A hardness above 45 makes the modulus higher and reduces the movement capability. 

This is an important and growing application for chemical-resistant and oil-resistant polysulphide sealants. As a result of a survey commissioned in Germany by the Association for Mineral Oil, Natural Gas and Coal (Deutsche Wissenschaftliche Gesellschaft fiir Erdbl, Erdgas und Kohle, 1989, 1991) it was found that less volatile diesel fuels permeate into the ground and contaminate the water-table. It was roughly estimated that one litre of diesel can spoil a million litres of water. The problem is more serious in areas where the water-table is near to the surface. 

Use Binder for carbon electrodes, base for paints and coatings. Impregnation of fiber pipe for electrical conduits and drainage, foundry core compounds, briquetting coal, tar-bonded refractory brick, paving and roofing, plasticizers for elastomers and polymers, extenders, saturants, impregnants, sealants. 

MAJOR USES Used as raw materials for plastics, solvents, dyes, drugs, paints, pipe coatings, roads, roofing, pesticides, sealants, to produce hydrogen, to extract metal from their ores, to manufacture graphite and electrodes, coal tar used in treatment of skin disorders. 

In addition to their use on highways and roofs, both hot poured and room temperature hardening bituminous compositions have been used as caulking materials and sealants in building construction. The classical agphalt/ashestos sealants contained volatile solvents and their resistance to solvents was increased by the incorporation of coal tar. These sealants have also been modified by the addition of elastomers, such as powdered rubber, and fillers, such as sawdust.12... 

Filled liquid neoprene sealants are cured at room temperature by the addition of lead oxide, tertiary amines or epoxy resins. Neoprene sealants covered by a top coat of white chlorosulfonated polyethlyene are being used on solar collectors.21 Mixtures of carboxyl terminated acrylonitrile elastomers (CTBN) and liquid epoxy resins cure readily at room temperature in the presence of bis phenol A and amines.22 Coal tar-epoxy resin, two component epoxy resin, and epoxypolyester resin systems have been used as sealants.22... 

Products and Uses Tar obtained from coal. Produced in making coke for steel. Coal tar originally was the major source of organic chemicals, which are currently obtained from natural gas and petroleum. Used for roads, waterproofing, paints, pipe coatings, surfacings, insulation, pesticides, sealants, adhesives, hair coloring products, and makeup. 

Experimental researeh on major properties of the sealant to control toxic and harmful gases leakage in coal mine... 

Chem. Descrip. Med. to high m.w. polymeric plasticizer Uses Plasticizer for adhesives (emulsion, solv., hot-melt), heat-resist, lacquers, barrier coalings (oil, fats, hydrocarbons), paints, sealants binder sizing agent for glass fibers... 

CAS 1189-08-8 EINECS/ELINCS 214-711-0 Uses Crosslinking monomer for preparation of inks, photoresists for printed circuit boards, photopolymer printing plates, wire and cable coalings reactive diluent for PVC plastisols, rubber crosslinking, glass reinforc plastics, adhesives, sealants, impregnated wood composites, and other surf, coatings... 

Chem. Descrip. Phthalate ester of tech, hydroabietyl alcohol Uses Tackifier for NR, SBR, NBR, CR, chlorinated rubbers, EVA, acrylics, polyamides for cements, hot-melt and pressure-sensitive adhesives, sealants, tapes, laminants, specialty nitrocellulose lacquers, printing inks Properties Pale solid sol. in esters, ketones, higher alcohols, coal tar, petrol, hydrocarbons dens. 1.05 kg/l soften, pt. 63 C acid no. 6 sapon. no. 129 ref. index 1.527 Cellosize ER-15M [Dow]... 

Uses Butyl mbber in sealants, coatings, elec, encapsulating compds., and conformal coalings incl. moisture-impermeable coatings, marine and construction sealants, elec, encapsulants, pressure-sensitive adhesives tackifier for pressure-sensitive adhesives processing aid, adhesion promoter... 

Chem. Desap. Benzophenone 12 CAS 1843-05-6 EINECS/ELINCS 217-421-2 Uses UV absorber for PVC, PP, PE, EVA, PU coalings, alkyd varnishes, vlnyl/aciylic adhesives and sealants... 

Uses Processing aid, green tack enhancerfor mbber extmsion, molding, calendering, mbber tires, industrial goods (sealants, hoses, belts, conveyors, shoes) vise, reducer in epoxy systems pot life extender, flexibilizer in floor coalings, hot-melL pressure-sensitive, and solv.-based... 

Uses Coupling agent esp. for polyolefins and polyolefin elastomers, min.-and glass-filled formulations, sealants (acrylic, SBR), rubbers (butyl, neoprene, isoprene, fluorocarbon), as primer coal for metals in insert molding... 

Uses Crosslinking agent for urethane elastomers and adhesives, fabric coalings, foams, gears, hot-melt adhesives, industrial coatings, inj.-molded parts, resins, sealants, shoe soles, tubing food pkg. adhesives, polymers... 

Chem. Descrip. Castor/organoclay complex Uses Thixotrope for caulks, sealants, mastics, and other thick-film coalings... 

Uses Monomer for air-drying adhesives, coalings, caulks, sealants, elastomers functional comonomer for acrylic resins crosslinks acrylics, unsat. polyesters and all d ManufJDistrib. Rhodia HPCII... 

Uses Flexibilizer, plasticizer in coatings, sealants, plastics elasticizer, adhesion promoter in coalings Trade Names Desavin ... 

Uses Binder, vehicle for paints, factory finishes, roof, paper, textile and industrial coalings, adhesives, caulks, sealants, tiles Manuf./Distrib. Air Prods. Ashland Dow Hampshire Natl. Starch Chem. NeoResins ReichhoW Rhodia Rohm Haas StanChem Thibaul Walker Tri-Iso VYN-AC... 

Preventol A 4-D Preventol A 4-F Preventol A 4-S Preventol A 5-F Preventol ASS aigicide, protection coalings Preventol A11-D aigicide, roof coalings NuosepI 166 Troysan Polyphase 588 aigicide, sealants... 

---