We’ve noticed, since we began distributing OCCL’s insoluble sulfur products, that some customers are using Chinese manufactured material, due to its cheap price. We strongly believe that you should consider ChemSpec’s insoluble sulfur (DS OT 20 HD & DS OT 20 HS)–even if priced higher than the competition–because of our products’ quality. This really comes down to the old adage: you get what you pay for!
Generally speaking, to be used properly in commercial manufacturing, insoluble sulfur needs to have the following characteristics:
- High Thermal Stability,
- High Insoluble Sulfur Content,
- Controlled fineness,
- Absence of any hard particles,
- Low ash Content, and
- Absence of any foreign particles and low Iron Content.
The above is necessary to ensure that the material does not bloom , disperses well, and there is no ingress of undesired material inside the rubber compound.
You will notice with Chinese-manufactured Insoluble Sulfur–from any supplier–that several of these parameters are likely lacking. This is the reason that no Chinese suppliers presently have Global approvals from any of the major tire manufacturers (NOTE: our product does have global approvals from the international tire producers). The processes used by Chinese producers commonly have some very basic, but serious, production issues–namely the following:
1. Production technology that cannot attain the above-described desired production parameters;
2. Production technology that cannot assure stability in the production performance parameters;
3. Their production processes do not use high grade quality stainless steel, which causes high corrosion levels and increased iron content;
4. Inadequate grinding technology, which does not allow uniform grinding; causing particle size distribution problems; and
5. Manual handling during some important production steps, translating into improper ingress of foreign material (our supplier’s process is automated).
Oftentimes, these failures result in, over time, the Chinese material chemically changing back to straight sulfur. So this problem is amplified if a customer is purchasing this material and having it shipped from China to another continent (i.e. North America), where the product sits for several months before being placed into a recipe.
For any further inquiries, please reach-out to us at ChemSpecLtd.com (or your respective sales representative).
ChemSpec recently received revisions to its Safic-Alcan product line. Please review our updated and improved 2014 Safic brochure, which is linked to this blog entry.
It’s that time of the year–the ChemSpec Christmas Carol. Merry Christmas everyone! It was a great 2013 and we look forward to an even better 2014: http://www.youtube.com/watch?v=ZTv9iY9xuFs
Tall oil rosin / gum rosin- these are rosin based esters commonly used as natural based emulsifiers and tackifiers in adhesives, rubber, inks, cements and asphalt.
Terpenes- these products include Polyterpenes and Terpene Phenolics, commonly used as natural based tackifiers in adhesive, sealants, coatings and thermoset rubber applications. They exhibit increased adhesion in hard to bond surfaces and substrates.
Tall oil products- these products include tall oil fatty acid esters, resins for improved processing and increased tack in adhesives, sealants, rubber and related applications.
We also offer several modified rosin resins. All of these materials are natural based alternatives to hydrocarbon tackifiers, solvent free and environmentally friendly.
Please contact me or your respective sales representative for more detailed information and applications.
ChemSpec is pleased to announce several new, high quality magnesia products. Working directly with several world-class magnesia suppliers, we are able to provide optimum grades of Magnesium Oxide (MgO) (and other magnesia products) for all of your processing requirements. ChemSpec is providing a wide range of surface area and particle size magnesia to address the needs of both the small custom mixer to the large scale blending operation.
After the development of polychloroprene, MgO became, and remains, a critical ingredient in synthetic rubber manufacturing. High quality, high surface area MgO is a key processing ingredient to provide scorch protection and acid adsorption in rubber formulations.
To meet the demanding requirements of the rubber grade MgO industry, ChemSpec has invested in its technical service resources to help customers with their conversion and processing concerns. This includes the hiring of Anthony Mariniello. Anthony, a long-time veteran of the magnesia industry, brings a wealth of experience and technical knowledge to ChemSpec. Anthony serves as ChemSpec’s Product Specialist, and is available to provide advice on various MgO technical applications (and other magnesia product applications).
MgO is used in a multitude of rubber manufacturing applications, such as a filler, an anti-scorch ingredient, as a pigment, an acid acceptor, and as a curing aid. It is also used in many other industrial manufacturing applications: plastics, glass, ceramics, steel, sugar refining, coatings, electrical, foundries, construction, etc.
ChemSpec & Performance Additives had very successful Elastomer Trade Show this year. At the ChemSpec / Performance Additives booth we distributed literature, provided product presentations via a large flat screen T.V., and also displayed product samples. We had over 200 customers and suppliers stop by to inquire about products or to simply say hello.
We also had a fantastic party on Wednesday night of the show at the Corner Alley pub in downtown Cleveland. ChemSpec rented out the back party room, and gave away prizes for various bowling games, provided a pizza buffet, cigars and had an open bar. Over 100 of our closest friends, suppliers, and customers attended the event.
Thanks to everyone who participated and made it a wonderful show, and we look forward to Nashville in 2014!
By Brian Sears, Sales Representative
ChemSpec offers a unique form of Calcium products to rubber compounders. This material is supplied to ChemSpec by Innovo Chemical Ltd. (UK). Innovo quarries, burns, mills and classifies / tests these products (Innovox 95 [oxide] / Innovox OH [hydroxide]) all at the same physical location. This alleviates many issues related to unwanted chemical reactions with atmospheric moisture. Other manufacturers of CaO 80% pastes and 90% oil treated products purchase their raw lime from third parties. This material often sits in silos or tankers for extended periods, where it is exposed to the elements well before it is even used in paste / granule / oil treated material production.
Additionally, this is an easy Kaizen project. Innovox product particle sizes often allow for lower load rates. Innovox 95 / Innovox OH product has a mean particle size of 2 to 3 microns; where the competitions’ products typically run approximately 40 microns. Consequently, ChemSpec has been successful in using these CaO products to replace 80 and 90% materials, as the smaller particle size and greater surface permits a much smaller dosage (sometimes equating to a 50% reduction in load rate). Consequently, by substantially reducing the load rate, you can reduce your inventory of this material and run a leaner manufacturing process.
This smaller micron size also improves the surface of extrudates and molded components, thus alleviating failure point issues with agglomeration related to larger CaO micron particle size.
Please contact your respective sales rep for further information.