DMDO for adhesives and sealants
DMDO (1,8-Dimercapto-3,6-dioxaoctane) is a di-functional mercaptan compound commonly used in the manufacturing of epoxy glues or sulfurized polymers in adhesives fields.
DMDO for chain transfer agent
DMDO (1,8-Dimercapto-3,6-dioxaoctane) is a di-functional chain transfer agent commonly used in the manufacturing of acrylic polymers.
DMDO is also a low odor mercaptan well suited in the substitution of thiolactic acid for example.
DMDS (Dimethyl disulfide), your reliable sulfiding and anti-coking solution
Dimethyl Disulfide, DMDS Evolution® E2 is the most efficient and safe sulfur provider for Hydrotreatment catalyst activation and steamcrackers cocking prevention. Our experienced technical support team is available to share its knowledge on DMDS Evolution® E2 and our Research and development team in Groupement de recherche de Lacq keeps developing programs to ease and improve its use and performances. Arkema’s world class production sites and global logistic network enable a local, easy and reliable sourcing; and our Carelflex® teams are available locally to perform your catalyst sulfiding. Our operations meet the highest certification for a consistent product quality and a service that meets our customers stringent standards.
DMDS Evolution® E2 for hydrodesulfurization catalyst sulfiding
Arkema is the only company to manufacture DMDS Evolution® E2, the most performant sulfiding agent, and provide direct turn-key catalyst sulfiding services worldwide with Carelflex®.
Dimethyl Disulfide, DMDS Evolution® E2 is the most effective sulfiding agent to be used for insitu hydroprocessing catalyst activation during startup of the unit. Hydrotreating catalyst (HDT) must be converted to the “Sulfide” forms to get the desired activity. DMDS Evolution® E2 is easy to pump, fully soluble in any hydrocarbon and has a high sulphur content to minimize delivered quantity and be cost effective.
DMDS Evolution® E2 for anti-coking in Propane and Butane Dehydrogenation units
Dimethyl disulfide, DMDS Evolution® E2, is the leading sulfur-based, anti-coking and corrosion inhibition technology that is used globally in Propane Dehydrogenation (PDH) and Butane Dehydrogenation (BDH) units. Hydrocarbons exposed to elevated temperatures form coke, which can cause metal carburization and affect heat transfer and flow dynamics. In less than 15 minutes, sufficient coke is formed to require dehydrogenation unit shut down for immediate cleaning and decoking. This anti-coking method is superior in performance and generally preferred compare to physical pipeline, cracker coating or polishing.
DMDS Evolution® E2 for hydrotreated vegetable oil units
Dimethyl disulfide, DMDS Evolution® E2, is the standard sulfiding agent to activate catalyst for hydrotreated vegetable oil units. The main process to manufacture renewable diesel converts renewable feedstock through a catalytic hydrogenation and an isomeration. This process uses well-known heterogeneous catalysts that require a sulfiding with DMDS Evolution® E2 to be active.
DMDS Evolution® E2 for steamcracker coking mitigation
Ethylene is the largest volume of basic chemical produced by the steamcracking of hydrocarbons. Cracking to produce olefins, suffers from side reactions that product carbon monoxide (CO) and carbon deposits on the cracking coils. Excess of CO leads to off spec ethylene and while fast coking reduces cracking furnace run lengths, productivity and profitability. Fortunately, a very low concentration of DMDS Evolution® E2 injected in the cracking furnace mitigates those side reactions. DMDS Evolution® E2 decomposes in the cracking tube only into H2S and methane without solid or coke deposit. By modifying the surface composition of the cracking tube, H2S poisons the metal sites involved in the formation of CO and coke. Year after year, all licensors of ethylene furnaces and olefins manufacturers recommend injecting DMDS Evolution® E2 to meet the designed performance.
DMDS Evolution® E2, the most efficient sulfiding and anticoking polysulfide
Dimethyl disulfide, DMDS Evolution® E2, only available from Arkema, is a breakthrough formulation for a better user experience on-site, providing a pleasant fragrance. It is successfully adopted as the standard sulfiding and anticoking agent of choice at refineries, renewable diesel plants, Propane and Butane dehydrogenation units (PDH, BDH) and steamcrackers.
DiCup® R/Luperox® DCP dicumyl peroxide
DiCup® R/Luperox® DCP dicumyl peroxide is used as a high temperature crosslinker in rubber and plastics applications. Compounds containing DiCup® R/ Luperox® DCP are processed at temperatures up to 250°F (121°C) and can be cured at temperatures above 300°F (149°C). DiCup® R/Luperox® DCP can be used also in the polymerization of expandable polystyrene as finisher and as synergist for fire retardant EPS applications.
Arkema diacetone alcohol or DAA is an oxygenated solvent derived from acetone which has two alcohol and ketone functions. It has a high purity. It is colourless and odourless and has a low evaporation rate.
Diacetone alcohol is mainly used in paints and coatings (coil coatings, wood varnishes, architectural coatings…). It is a good solvent for organic peroxides and can also be used for the treatment of textiles and leather, in chemical synthesis, or as a cleaning solvent.
The Dianol® range contains polyether polyols which provide improved adhesion and resistance to high temperatures and hydrolysis. The Dianol® polyols are mainly used as building blocks in polyurethane, polyester and epoxy resins. They are also used as reactive diluents in industrial paints. The main applications for the Dianol® polyols are paints, coatings, inks, composites and adhesives.
The Dinoram® surfactants are cationic rapid setting (CRS) emulsifiers for bitumen.
It reduces the physical and chemical interactions of the fines with the air bubbles during the flotation.
It contributes to the elimination of the inks with the flotation sludges.
Added to the pulper with the other deinking chemicals, Dipflo™ helps to increase both the deinking yield and the deinked pulp brightness.
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Durastrength® 200 acrylic impact modifier offers superior impact properties, ease of processing, and nearly flawless surface finish to rigid vinyl compounds. The unique chemistry of Durastrength® 200 acrylic impact modifier has made it a leading impact modifier in weatherable building products for over 25 years. In addition, low melt viscosity and rapid fusion make Durastrength® 200 acrylic impact modifier ideal as a general purpose modifier.
Durastrength® 320 acrylic impact modifier is an improvement on Durastrength® 200 acrylic impact modifier (D200), for extreme cold-weather impact performance. Durastrength® 320 acrylic impact modifier is optimized for use with lead, tin, and mixed-metal heat stabilizers where pH levels can be a challenge. When used in injection molding, users can rely on the same low melt viscosity and rapid fusion found with D200.
Durastrength® 350 acrylic impact modifier is the leading next-generation core-shell modifier in Arkema’s catalog. Developed on a high-rubber content design, Durastrength® 350 acrylic impact modifier was a response to industry needs in the window profile market. Compared with competitive high-rubber modifiers, Durastrength® 350 modifier offers faster fusion without the need for additional process aids, and superior impact performance at 3 to 4.5 phr.
Durastrength® 365s acrylic impact modifier is a new generation composite acrylic core-shell material that imparts superior impact properties to outdoor vinyl applications. Durastrength® 365s impact modifier provides higher impact strength and wider processing window than Durastrength® 365, leading to unmatched cost/performance balance on the market. Durastrength® 365s impact modifier is particularly valuable in mixed metal stabilized applications and where double-V notch Charpy impact and/or falling weight impact resistances are required.
Durastrength® 367 is a new generation of composite acrylic core-shell impact modifier that presents improved impact properties and corner weld strength versus current non acrylic solutions. It is devoted to outdoor vinyl applications. Durastrength® 367 unique and patented structure makes it our most cost effective impact modifier for building application formulations. Durastrength® 367 is particularly recommended as an alternative to non-acrylic impact modifier in applications where improved impact properties are required.
Durastrength® 382 acrylic impact modifier is a new generation high-rubber acrylic impact modifier designed to meet the most demanding impact standards in durable vinyls. Even at low use levels in challenging applications like vinyl window profiles, Durastrength® 382 acrylic impact modifier delivers high impact strength, a wide processing window, and high gloss surface finish. The formulation has been optimized for use with Ca/Zn stabilizers and is also useful in C-PVC or flexible vinyl applications.
Durastrength® 4000 acrylic impact modifier represents the newest technology that imparts excellent impact properties to rigid PVC products and provides outstanding processability.
Durastrength® 4000 impact modifier can be used in place of CPE impact modifiers while maintaining the processing advantages of traditional acrylic impact modifiers.
Durastrength® 440 impact modifier is based on novel acrylic chemistry designed to impart excellent ambient and superior cold temperature impact to Polycarbonate and its alloys. Durastrength® 440 all-acrylic impact modifier provides the excellent weatherability for which acrylics are known. The properties have been optimized to provide a readily dispersed modifier that has a minimal impact on the color of molded parts.
Durastrength® 480 acrylic impact modifier outperforms nearly any other acrylic or MBS modifier in Polycarbonate high temperature aging color hold. This hot climate performance has been demonstrated in studies up to 120°C. Mold-in color users in the automotive, lawn and garden, and recreational markets value Durastrength® 480 acrylic impact modifier for its adaptability to all climate conditions.
Durastrength® 506 acrylic impact modifier was the first development in Arkema’s line of multifunctional acrylic modifiers. Designed to offer cost savings to users, Durastrength® 506 impact modifier is based on Arkema’s proven acrylic core-shell technology. In injection molding applications, Durastrength® 506 acrylic impact modifier is especially useful. Molded vinyl fittings makers achieve fast fusion and excellent impact performance without the need for additional process aids. This provides a savings in the total acrylic content of these vinyl formulations.
Durastrength® 510 acrylic impact modifier is a multifunctional product designed to offer excellent workability, nearly flawless surface finish, and high gloss to extruded window and door or siding vinyls. Compounds including Durastrength® 510 acrylic impact modifier have improved flow through extrusion, extending screw and barrel life while increasing productivity. Users value Durastrength® 510 acrylic impact modifier for its aesthetic properties, weatherability, and impact strength even when used with high amounts of filler as is common in vinyl siding applications.
Durastrength® 527 is a high performance, highly efficient impact modifier designed for use in window profiles, capstock solutions,and other weatherable vinyl applications. Durastrength® 527 enables a broad processing window and best-in-class impact strength based on efficiency.
Durastrength® 535 acrylic impact modifier (D535) is an improvement on Durastrength® 510 modifier (D510), offering faster fusion, and improved impact performance for the same use level (phr). The faster flow of compound through single and twin-screw extruders found in D510 is improved with D535, even without the use of additional process aids. These improvements do not compromise the superior surface gloss and finish offered to window profile, siding, fencing, pipe, and injection molded articles.
Durastrength® D36X is an acrylic core-shell impact modifier that brings superior impact properties to outdoor vinyl applications. Durastrength® D36X is a cost-effective impact modifier designed for building application formulations, thus providing an optimum balance between impact strength and formulation cost. Durastrength® D36X leverages the same weather resistance chemistry as our Durastrength® series, and is known to impart better flowability to PVC dry-blends.
Durastrength® acrylic impact modifiers
Arkema's acrylic-based impact modifiers are designed to deliver optimum cost and performance in rigid and flexible PVC applications for siding, fence, deck, rail, pipe and injection molding applications.