Struktol - A World of Capabilities

The August Digital Edition
 
 
Home The Magazine Digital Edition Red Book Blue Book Book Store RW China Archives IEC - Expo
 
 

Celebrating 125 years of service to
the Worldwide Rubber Industry

 
 
News/Markets Hotlinks Media File Chemical Suppliers Machinery Suppliers Testing Services Custom Services Community
 
  AkzoNobel
Expos - Meetings - Golf Outings
Add your event
- courtesy of AkzoNobel


Translate Page To German
Tranlate Page To Spanish
Translate Page To French
Translate Page To Italian
Translate Page To Japanese
Translate Page To Korean
Translate Page To Portuguese
Translate Page To Chinese
Click to translate

Akrochem

Click here to read the
August issue.



Product Spotlight

Interface Public-Members (IPM) Mobile App
Click here for more information

Rubber World's Product News Online

Equipment | Materials | Instruments | Hardware/Software | Services

 
 
Liquid silicone developed for radiator gaskets
Elastosil RT 728 liquid silicone is offered for the production of automotive gaskets. Molded parts made from this silicone are said to be resistant to heat and coolant, and exhibit low compression set even under permanent stress. Car radiators and cooling system components can thus be reliably sealed. Elastosil RT 728 can be injection molded or mechanically dispensed straight onto the part to be sealed. Elastosil RT 728 has been chiefly developed for the production of fluid- and heat-resistant gaskets for the automotive industry. The liquid silicone is characterized by high coolant resistance. Gaskets made from Elastosil RT 728 are said to exhibit no more than 30% compression set after 1,000 hours in coolant at a temperature of 105C. After 1,000 hours at 125C, the permanent deformation is still less than 65% as soon as the stress is removed. The elastomer's high resilience delivers constant contact pressure and optimum leaktightness in the seal groove. Moreover, even long-term stress has very little effect on the overall property profile of Elastosil RT 728. Vulcanizates of the liquid silicone are said to meet delivery specifications of leading car manufacturers concerning gaskets for use in engine cooling systems. Elastosil RT 728 supports cost-efficient series production of parts by injection molding. However, the liquid silicone can also be applied by dispensing equipment straight onto the part to be sealed. Automotive subcontractors use this method to produce two-component parts. Elastosil RT 728 meets all the key requirements of this application. By virtue of its shear-thinning properties, it can be applied by dispensing equipment and is self-adhesive. Automotive suppliers use the product to make radiator components.

Wacker Chemie AG
www.wacker.com

Post date: 8/12/2014

 
Rubber process additives
Rubber process additives Rubber and plastics additives and processing chemicals are supplied by the company. Products featured in this 16-page, four-color brochure include chemical foaming agents, accelerators, antidegradants, activators, inhibitors and stabilizers, hydrocarbon resins and contract manufacturing and services. Chemical foaming agents supplied by the firm include azodicarbonamide, modified azodicarbonamide, hydrazine compounds, carbazides, activators and stabilizers. Accelerators supplied by the company include sulfenamides, guanidines, thiurams, dithiocarbamates, thioureas, thiazoles and murphdinos. The company's antidegradants line includes non-staining antioxidants, staining or semi-staining antioxidants, antiozonants, paraffins and micro-paraffin blends. Aliphatic, aromatic and copolymerized hydrocarbon resins are supplied.

Seacon
www.seaconcorp.com

Post date: 8/12/2014

 
Hydrocarbon resin
Alphatec 80 is a modified C5 low color hydrocarbon tackifying resin that is chemically inert with excellent color and heat stability, according to the company. It is said to have exceptional compatibility with elastomers, acrylates, waxes and polyethylene. Alphatac 80 is highly recommended for the tape, adhesive and sealant markets. This supplier of resins is said to have built a strong reputation for providing high quality products through a reliable distribution channel.

Rezkem Chemicals
www.rezkemchemicals.com

Post date: 8/12/2014

 
Rubber extender oil
Tudalen 5138 US is a process oil used as an extender oil in the production of tires and rubber. It is made using controlled processing and offers an environmentally-friendly alternative to distillate aromatic extract products. Quality combined with active environmental protection and worker safety are said to increase this company's standing, and the oil's efficiency is said to allow the company to offer branded products of a consistently high quality. The firm is certified to DIN EN ISO 9001:1400, ISO TS 16949 and other quality standards.

H&R Group US
www.hur.com

Post date: 8/12/2014

 
Processing additive
Processing additive Processing additive ZB 47 is designed for use in high-performance natural rubber compounds. It is said to improve the processing characteristics and performance properties of natural rubber compounds. It performs well in both black and mineral-filled compounds, improving processing parameters and offering heat stability (reversion resistance) and improved dynamic properties in natural rubber compounds containing mineral fillers and silane coupling agents. ZB 47 is said to improve tack of high natural rubber compounds, and lowers mixing temperatures for faster filler incorporation and reduced mixing energy. The company's Intelligent Additive Solutions are said to make polymers easier to process, ensuring maximum product quality and performance consistency.

Struktol Company of America
www.struktol.com

Post date: 8/12/2014

 
Rubber o-ring materials
This global o-ring and seals provider has introduced seven more materials that qualify for the 3-A symbol under 3-A Sanitary Standards. They meet the Standard 18-03 for "Multiple Use Rubber and Rubber-Like Materials," and include one NBR (black), two Viton (one black and one green), one EPDM (gray) and three silicones (all translucent). The 3-A designation represents the cooperative set of standards by professional sanitarians, equipment manufacturers and processors. These groups represent associations like the National Association for Food Protection, the Food Processing Suppliers Association, the International Dairy Foods Association and the American Dairy Products Institute, among others. The designation assures products that the firm supplies continue to meet sanitary standards for protecting food from contamination.

RT Dygert
www.rtdygert.com

Post date: 7/11/2014

 
Gasket sealing solution
Gasket sealing solution The OmniGasket sealing solution is being utilized in the aerospace market as a flanged sealing component on aircraft wing slats and their de-icing telescopic duct system. Retained in a gasket, this sealing solution is machined from a Meldin 7001 polyimide plate with a static OmniSeal seal installed inside, and is mounted at the interface between the telescopic duct and the wing leading edge. When flying at high altitudes in subzero temperatures, ice forms on the wing of aircraft and a de-icing protection system destabilizes the ice using hot air coming from the engine, thus allowing the slipstream to dislodge it and remove it from the wing. The OmniGasket component is currently installed on the Dassault Falcon 7X (a large-cabin, long range business jet) and is being tested for use on a new mid-size jet. The product is composed of Meldin 7001 thermoset polyimide materials and OmniSeal spring-energized seals, and can handle extreme service conditions.

Saint-Gobain Seals
www.seal.saint-gobain.com

Post date: 7/11/2014

 
Butyl rubber products
This synthetic rubber manufacturer has undertaken a complete rebranding of its butyl rubber products. A package encompassing a global ability to deliver products anywhere, anytime, extensive technical expertise, a focus on innovative solutions and customer demands are said to represent the X-Butyl brand. All existing product grades have been renamed. For example, Regular Butyl 301 is now called X_Butyl RB 301. Bromobutyl 2030 has become X_Butyl BB 2030. And Chlorobutyl 1240 has been renamed X_Butyl CB 1240. X_Butyl RB (regular butyl) is a copolymer made of isobutene and small amounts of isoprene, and is distinguished by its high impermeability to gas and good resistance to heat, weather and ozone. In addition, it is very resistant to chemicals and demonstrates a high capacity to absorb energy. X_Butyl CB (synthetic rubber) is created by the chlorination of X_Butyl and, compared to regular butyl, is characterized by faster vulcanization times and improved adhesion to other unsaturated polymers. The properties of vulcanizates made from brominated X_Butyl BB are largely identical to those produced from chlorinated X_Butyl. However, vulcanization takes place even more quickly.

Lanxess
www.lanxess.com

Post date: 6/12/2014

 
High-performance polymers
High-performance polymers like Exceed and Enable metallocene polyethylene resins (mPE), Vistamaxx propylene-based elastomer (PBE), polypropylene (PP) resins and Santoprene thermoplastic vulcanizates (TPVs) can create value in flexible and rigid packaging, automotive and polymer compounding applications, according to the company. By combining its polymer, application and processing expertise with state-of-the-art machine technology, the company is said to help deliver high-performance products that meet companies' needs. Santoprene TPVs have proven to be dependable polymers for flexible engineered parts that require long-term performance, according to the company. Santoprene TPVs are said to consistently deliver excellent performance for automotive and demanding industrial applications.

ExxonMobil Chemical
www.exxonmobilchemical.com

Post date: 6/12/2014

 
UV curable bonding
Specially formulated to optimize bond strength, UV15-42C is a UV curable system for bonding, sealing and coating applications. This smooth paste can be applied vertically without sagging. As an optically clear compound, it is often used in the fiber-optic, optical, electronic, aerospace and specialty OEM industries. This one-part system is said to bond well to a wide variety of substrates, including rubbers, composites and most plastics. Adhesion to acrylics and polycarbonates is said to be exceptional. UV15-42C also features a tensile strength of 5,000-6,000 psi and a tensile modulus of 250,000-300,000 psi at room temperature. Its roughness enables it to withstand thermal cycling as well as mechanical shock. UV15-42C is also resistant to chemicals such as water, oils, cleaning agents, acids and bases. It cures readily upon exposure to a UV light source.

Master Bond
www.masterbond.com

Post date: 5/15/2014

 
Antifungal EPDM rubber
An antifungal EPDM rubber compound is specifically developed to be used in situations where rubber is expected to operate in a high-humidity, high-ambient-temperature environment, such as the rubber door seal on front-loading washing machines. As the popularity of those machines has increased with consumers, many have complained about mold and mildew develoing on the door seals. The combination of soil that comes in with dirty clothes, cotton residues and the warm, humid environment of a machine all can lead to mold growth and objectionable odors. After simulation testing, the compound is said to exhibit no fungal growth per the ASTM International standard and prevents mold issues. The antifungal properties are said to be achieved without detrimental effects to human health.

Trostel
www.trostel.com

Post date: 5/15/2014

 
EPDM curing process
Curing technology for EPDM rubber has been introduced. Zeolite can be used as a new co-activator for resol curing, enabling both high cure speed and high curing efficiency. Resol curing is said to open up an alternative approach of EPDM rubber processing besides established sulfur vulcanization and peroxide curing, which are the main crosslinking technologies for EPDM rubber. So far, according to the company, resol curing could be designated as the work horse for the dynamic vulcanization of EPDM/PP-based thermoplastic vulcanizates (TPVs). However, for thermoset vulcanization of EPDM, it is hardly used, because it is considered to be too slow and suffers from marching cure. Depending on the particular resol curing system and rubber under investigation, the cure rate is said to be strongly increased. This means a reduction of scorch and vulcanization times up to 75 percent. The final degree of crosslinking is said to be clearly enhanced, almost up to the double value. (Lanxess) www.lanxess.com

Lanxess
www.lanxess.com

Post date: 5/15/2014

 
Styrenic block copolymers
Two high-performance styrenic block copolymers, MD6951 and MD1648, are said to present a unique balance of high elasticity, extraordinary tensile strength and exceptional lower melt viscosity, which will allow for a host of new process applications to be explored. Both polymers are an extension of the company's versatile family of HSBCs, Kraton A and ERS polymers, and will enable innovators to pursue melt blown, injection molding, rotational molding, compression molding or textile processes, while maintaining the softness, strength and pliability of their products, according to the company. MD6951 has an enhanced flow capability never before seen on the market, according to the firm. It has several potential applications, including soft touch overmolding. MD1648 is an enhanced rubber segment styrenic block copolymer that is compatible with polyolefins.

Kraton Performance Polymers
www.kraton.com

Post date: 5/15/2014

 
Flame-resistant compound
MR35-70-46 is a flame resistant compound that recently passed the Bombardier SMP 800-C toxicity testing, certified by Exova Warringtonfire North America. A standard method used in the NFPA130, the SMP 800-C test analyzes toxic smoke gases produced when a test material is burned. The compound also meets regulations for ASTM C1166 (flame propagation of elastomers), ASTM E162 (surface flammability of materials using a radiant heat energy source), ASTM E662 (specific optical density of smoke generated by solid materials) and ASTM E1354 (heat and visible smoke release rates for materials using an oxygen consumption calorimeter).

Mechanical Rubber
www.mechanicalrubber.com

Post date: 5/15/2014

 
Foamed blowing agents
Mikrofine blowing agents used in rubber and plastic to make foamed products, both in the thermplastics and thermoset industry, are distributed by this company. Blowing agents are typically divided into two different classes, including chemical and physical. Chemical blowing agents release gas on heating while the physical class involves the addition of a highly pressurized gas to the polymer matrix. Exothermic, endothermic and Endex chemical blowing agents are being distributed. Exothermic blowing agents are based on azodicarbonamide and hydrazides and release maintly nitrogen. Endothermic blowing agents release mainly carbon dioxide. Endex blowing agents are blends of exothermics and endothermics. They each have their place in the foamed industry to make compounds for a myriad of applications.

Harwick Standard Distribution
www.harwickstandard.com

Post date: 5/15/2014

 
Integrated aliphatic TPU
The company's integrated aliphatic thermoplastic polyurethane (TPU) range of solutions features the latest developments and improvements in Merquinsa legacy aliphatic TPUs for molding. Building on the improved UV and staining resistance shown by Pearlthane 91T85 (88 durometer A hardness) in molded parts like watch belts and weatherable electronic devices, the firm has expanded its aliphatic TPU offering, commercialized under Estane Engineered Polymers. The aliphatic portfolio now includes new and improved molding grades for the industrial, automotive, sports and recreation, and electronics markets. Driven by the increasing demand for light colors and/or optical clarity in several technical and fashion-end applications, the latest developments from Estane Engineered Polymers are said to have resulted in an improved formula for Pearlthane D91T80. This aliphatic TPU grade (82 durometer A hardness) is said to offer excellent color stability upon UV exposure, and also features excellent elasticity properties, according to the company. Additionally, Pearlthane D91T86 has been recently introduced, with a 90 durometer A hardness, to obtain a faster processing and better cycling time.

Lubrizol
www.lubrizol.com

Post date: 4/15/2014

 
Mold release systems
TraSys water-based release coatings are offered by the company. These mold release agents use highly effective, stable raw materials that are synthesized in a unique process to provide the proper balance of durability and release for an application. Product consistency, reliability and availability are said to help keep production running smoothly. TraSys coating and release systems are water-based release coatings that enable molders to meet even the most stringent existing and anticipated environmental regulations, without sacrificing production. They are free of chlorofluorocarbons, ozone-depleting chemicals and volatile organic compounds. The water-based technology in TraSys mold release coatings helps avoid the challenges associated with solvents and alcohol. High levels of performance and longevity are offered at a competitive price.

Stoner
www.stonersolutions.com

Post date: 4/15/2014

 
Propylene-based elastomer
Addition of Vistamaxx PBE to a masterbatch from Shanghai Xiner enables a low processing temperature of about 120C (248F). This is said to be particularly important if heat-sensitive additives are being used. Also, when the masterbatch is used in applications such as films, almost no adjustment in processing temperature is required. Use of Vistamaxx PBE in masterbatch is said to allow for excellent dispersion of functional additives and color pigments.

ExxonMobil Chemical
www.exxonmobilchemical.com

Post date: 4/15/2014

 
Light-curable adhesives
Light-curable adhesives Cyclic olefin polymers/copolymers (COP/COC) are said to have become popular choices in the point-of-care device industry because of their many advantages, including high strength, hardness, low water absorption and excellent biocompatibility. The company's 1072-M MD adhesive is a UV/broad-spectrum-cured adhesive specifically designed for bonding COC/COP film laminates and other difficult-to-bond polymers. Designed to be LED optimized, 1072-M will cure in less than three seconds after exposure to LED or broad spectrum UV light. Optimal cure time can be achieved by using this product in conjunction with an LED light curing system from the company, designed to provide users with significant advantages over conventional lamp-curing systems, including cooler curing temperatures, more consistent cure results, lower intensity degradation over time, lower energy consumption and reduced costs.

Dymax
www.dymax.com

Post date: 4/15/2014

 
Advanced SBR and BR
High quality, advanced technology SBR and BR products from Synthos S.A. are distributed by the company. Synthetic rubber production is executed by two main technologies, including emulsion and solution polymerization. Two groups of emulsion rubber are offered, including emulsion styrene-butadiene rubbers (ESBR) and high styrene rubbers (HSR), as well as one solution rubber, butadiene rubber (NdBR). Styrene-butadiene rubbers are sold under the Kralex and KER product names. Kralex rubber is produced in the Czech Republic, and KER is produced in Poland. Styrene-butadiene rubbers are produced by a technology of cold emulsion polymerization and coagulated by a system of acid and synthetic coagulant, and are stabilized by staining or non-staining antioxidants. Some grades are solid, and some are modified by extender oils, including treated distillate aromatic extract (TDAE) or residual aromatic extract (RAE). Styrene-butadiene rubbers are suitable for rubber compounds used in the production of tires, conveyor belts, footwear, wire and cable, hose and various other molded goods.

Harwick Standard Distribution
www.harwickstandard.com

Post date: 4/15/2014

 
Molecular imprinting
The Handbook of Molecularly Imprinted Polymers is said to provide a useful guide to preparing molecularly imprinted polymers (MIPs) for diverse practical applications. The first chapters focus on specific applications, such as MIPs for sample concentration, MIPs for chromatography and related techniques, MIPs as sensor components, MIPs as traps for medical and bioremediation, MIPs as catalysts and artificial enzymes, and MIPs as components of drug delivery systems. The book examines interest in the MIP approach for specific applications, specific aspects of the synthesis of MIPs for this aim, and representative examples of MIPs and their performance in various applications.

Smithers Rapra
www.smithersrapra.com

Post date: 3/6/2014

 
Radial shaft seal rubbers
Radial shaft seal rubbers HSS radial shaft seals are designed to promote optimized performance and reliability for critical steel mill and metals industry assets. The all-rubber, reinforced sealing solutions are said to provide metal rolling mills with high-performance and easy-to-install solutions to protect large-size bearings from the ingress of potentially harmful contaminants. HSS seals are manufactured from nitrile rubber (NBR), SKF Duratemp (HNBR) and SKF Duralife (FKM). The standard grade of these materials is used for the sealing lip and a harder grade is engineered for the part of the seal body contacting the housing bore to impart improved stability during installation and in operation. SKF Duratemp is a hydrogenated nitrile rubber (HNBR) that is said to combine the wear resistance of SKF Duralip with increased high-temperature resistance. SKF Duratemp is also said to be more resistant to chemical attack, weather, aging and ozone. SKF Duralife is a fluoro rubber compound said to be characterized by its very good wear, and thermal and chemical resistance. Its resistance to weather and aging from UV light and ozone is said to be very good and its gas permeability is very slight.

SKF USA
www.skfusa.com

Post date: 3/6/2014

 

 
 
This page, and all contents, are Copyright (c) 2014 Rubber World Magazine.
This site was created by Rubber World Magazine's Electronic Publishing Division, Akron, Ohio.