Industrial Resins

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Industrial Resins

Wide-ranging resin solutions for friction, abrasives, refractory, paper impregnation, insulation, and composites that comply with growing demands around safety, compliance, efficiency, and fire protection. 

 

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Segment Sub Segment Application Description
Friction Light Vehicle Disc Pads Passenger Car OEM and Aftermarket Disc Pads SI Group manufactures a range of unmodified, low- and high-free-phenol Phenol-Formaldehyde (PF) resins. Our portfolio also includes nitrile -, epoxy - and phosphorous-modified resins for use in disc pads for SUVs and 4x4 vehicles and provides attributes such as soft underfoot, short stopping distance, and heat resistance.
Friction Light Vehicle Brake Linings Flexible Roll and Rigid Brake Linings SI Group's product range includes unmodified Phenol-Formaldehyde resins, phosphorous-modified, and cashew-modified resins to provide a stable friction coefficient and excellent fade behavior. 
Friction Commercial Vehicles Truck and Bus Brake Linings and Bus Disc Pads SI Group produces unmodified, high- or low-free-phenol Phenol-Formaldehyde resins as well as cashew-modified products for medium to large truck and bus brake linings and bus disc pads. Our product range also includes high friction products for use in drum linings for trucks and disc pads for buses utilized in mountainous areas.
Friction Railway Railway Brake Blocks and Pads SI Group offers unmodified Phenol-Formaldehyde resins and cashew-modified resins with a range of free phenol levels. Through phosphorous- and oil-modification, we also supply resins that are used for manufacturing blocks and pads for high-speed and subway trains as well as for heavy freight trains.
Friction Clutch Facings Clutch Facings and Paper SI Group provides unmodified, low-free-phenol PF or cashew-modified resins, PF resoles or novolacs in solvent, blends of cashew- and phosphorous-modified resins, as well as epoxy-modified resins to serve this diverse range of applications including manual clutch facings (dry and wet process), dry double clutch facings, dual-clutch transmission single cone, and paper impregnation for automatic transmissions.
Friction Lamellae/Sheets/Papers Clutch Elements SI Group supplies a range of PF resoles in solvent ranging from low-solids, low-viscosity to high-solids, high-viscosity versions.
Friction Winch/Crane Brake Linings Impregnated Woven Textile Belting SI Group offers a solvent-free water-based PF resole.
Friction Backing Plate Adhesive Brake Pad Backing Plate Adhesive SI Group manufactures unmodified, epoxy-modified or vinyl-modified PF resins dissolved in solvent
Abrasives Bonded Abrasives Cutting/Grinding Discs SI Group offers unmodified and epoxy-modified resins with a range of flow properties for straight and depressed-center cut-off discs of various diameters, low-speed precision cut-off discs, and rail cutting discs. Our newer technologies consist of dust-free powder and liquid resins comprising a bubble-free water-based resole, low FA-modified resole for improved G-ratio and high FA-modified resole for hot pressing.
Abrasives Bonded Abrasives Grinding Wheels SI Group's product range includes a variety of resins ranging from unmodified, short, and medium flow resins with varying levels of hexamine. Also included are nitrile-modified long flow and epoxy-modified medium flow resins. New technologies comprise a bubble-free water-based resin and dust-free powders. Due to this wide range, SI Group's resins are utilized in grinding wheels ranging from heavy-duty centerless to small and precision tool room grinding wheels.  SI Group's products are also used in double disk and large diameter roll grinding wheels. 
Abrasives Bonded Abrasives Rubber Bonded Wheels SI Group supplies both powder and liquid resins for rubber-bonded wheels. Powder resins have medium hexamine levels and consist of unmodified short flow resin or epoxy-modified medium flow resins. An FA-modified resole is available as a liquid resin.
Abrasives Bonded Abrasives Snagging Wheels and Knife Sharpening Snagging wheel applications extend from heavy-duty, fixed or portable, to small precision tool room and fixed high-speed wheels. SI Group's range of resins for these and knife sharpening blocks include unmodified short flow resins with medium to high hexamine addition levels as well as a medium flow epoxy-modified resin with medium hexamine level and a nitrile-modified long flow, low hexamine content resin.
Abrasives Bonded Abrasives Thin Wheels SI Group offers an unmodified short flow, high hexamine content powder resin, as well as an FA-modified liquid resole.
Abrasives Bonded Abrasives Diamond Wheels SI Group provides powder resins consisting of Epoxy-modified medium flow or unmodified short flow resins with varying hexamine content for the production of diamond wheels. A liquid resin to wet out the aluminum hub is also available.
Abrasives Bonded Abrasives Polishing blocks and pads SI Group supplies both epoxy-modified and unmodified medium flow powder PF resins and FA-modified liquid resoles for use in polishing blocks and pads
Abrasives Bonded Abrasives Glass Fiber Inserts and Discs SI Group offers fast-drying liquid resins for the production of glass fiber inserts for bonded abrasives and glass fiber discs as backing pads for flap discs.
Abrasives Coated Abrasives Backing Impregnation SI Group's product range includes unmodified and cashew-modified liquid resins for the production of flexible cotton, heavy-duty cloth, polyester, or polyester-cotton backings. These are used for backfill and facefill coatings and in the production of rigid fiber discs as well. SI Group also offers a low-free monomer resole to reduce emissions during processing.
Abrasives Coated Abrasives Make / Size / Supersize Coats SI Group offers unmodified as well as low monomer resins or general-purpose and heavy-duty make coats and size coats.  Supersize resin is also available for improved material removal rate on mild steel, stainless steel, or soft metals.
Abrasives Coated Abrasives Abrasive Mesh SI Group produces unmodified and cashew-modified liquid resoles for the manufacture of abrasive mesh.
Abrasives Coated Abrasives Sponges and Non-Woven Products SI Group supplies unmodified and cashew-modified resoles for use with nylon and polyester fibers.
Refractory Shaped Refractories Refractory Bricks SI Group's product range includes powder resins, water-based resoles as well as liquid resins in furfuryl alcohol. This range can be used in the production of bricks with the following mineralogies: Mag, Cr-Mag, Mag-C, Dolomite, Dolomite-C, Al-C, AL-Si-C.
Refractory Shaped Refractories Sliding Gates and  Tundish Well Blocks, Flow Control Tubes and Crucibles, Submerged Nozzles and Shrouds SI Group provides both resole and novolac solutions in a range of solvents, including Furfuryl Alcohol.
Refractory  Shaped Refractories Sleeves SI Group offers unmodified PF resin powder for this application.
Refractory Shaped Refractories Tundish Board Lining SI Group manufactures medium flow PF resin powders with medium hexamine content. We also offer a low-viscosity low-free-phenol resole with low nitrogen content to wet out the fibers in tundish board linings.
Refractory Shaped Refractories Refractory Impregnation SI Group manufactures resole and novolac solutions in FA for the cold process, as well as solid novolacs with a low melting point for use in the hot process.
Refractory  Unshaped Refractories Taphole Clay SI Group manufactures resoles and novolacs or combinations of these in glycols, as well as cashew-modified resins, for use in taphole clays.
Refractory Unshaped Refractories Dry Vibratable / Ramming Mixes SI Group's product range includes powder resins with hexamine for vibratable and dry ramming mixes, and without hexamine for dry ramming mixes. We supply powder resins to use with furfuryl alcohol, or novolac resins dissolved in FA, for wet ramming mixes.
Insulation Felt Insulation General Purpose and Self-Extinguishing Felts SI Group offers unmodified resin powders for general-purpose felts, as well as fire-retardant grades for the production of self-extinguishing felts. A special free-flowing powder with fire-retardant is also available for use on LaRoche equipment.
Insulation Glass/Rock Wool Glass/Rock Wool SI Group supplies various water-based low-viscosity resols for the impregnation of glass and rock wool, as well as low-monomer versions.
Insulation Composite Foam Phenolic-polystyrene Composite Foams SI Group produces a water-based resol of high reactivity for use in composite foam manufacturing.
Impregnation Paper Impregnation and High-Pressure Laminates Paper Impregnation and High-Pressure Laminates SI Group supplies water-based resoles for the production of high-pressure laminates and evaporative cooling pads, as well as solvent-based resoles for automotive filters.
Impregnation Glass Fibre Composites Glass Fiber Composites SI Group supplies water-based resoles of higher viscosity for use in hand lay-up applications, and of lower viscosity for spray lay-up and transfer moulding. We also supply the acid catalysts to be used with these.
Timber Plywood Spray and Roller Applications SI Group supplies liquid phenol-formaldehyde resoles and the accompanying hardeners for the production of plywood in highly automated and manual lay-up settings.
Timber Structural Timber Finger Jointing and Laminating SI Group offers SATAS approved MUF resin and hardeners which comply with SANS 10183 for use in both premixed and honeymoon applications in finger jointing. Our SATAS approved MUF adhesives are also used in laminating timber in both close-contact and gap-filling applications. SI Group also supplies SANS-compliant resorcinol phenol-formaldehyde resins and curing agents for use in laminating and boat-building applications.
Timber Non-Structural Timber Furniture and Non-Structural Interior Applications SI Group manufactures a polyvinyl acetate emulsion adhesive with good gap-fill properties and dries to an opaque film.
Foundry Cold Box Automotive Industry, Pumps and Valves, Bearings and Railway Components SI Group produces a two-part phenolic and isocyanate resin system that is cured with amine gas. It is suitable for the production of cast and ductile iron components, as well as steel and non-ferrous metal castings.
Foundry No-Bake Furanes Mining Components, Valve Bodies, and Discs Bearing Housings SI Group offers a number of furane-based resins with low formaldehyde and low to zero nitrogen content and their accompanying acid catalysts, for the production of higher quality steel castings.
Foundry Alkaline Phenolics Components for Mining, Power Generation, Construction, and Dredging SI Group's product range includes a number of ester-cured alkaline phenolic resins for the production of both ferrous and non-ferrous castings. SI Group's offering also includes a range of ester activators to match the curing time and bench life requirement of each application.
Foundry Coatings Cast Iron, Non-Ferrous Heavy Metal, Steel and Manganese Steel Casting SI Group offers a range of coatings that are magnesite,  silicate, or zircon silicate-based with either aqueous or solvent-based carriers.