additives feature | Fire retardants
CoMPArInG tHe fIre PerforMAnCe of GreAt LAkes’ eMerALd 300 wItH HBCd, wHICH It Is desIGned to rePLACe
load levels to HcBd. The company has expanded capacity at its interim production facility and, according to moore, will be ramping up commercial production during first quarter 2012. “we expect to have the capacity in place to convert a good portion of the business,” he claims. dow says that it expects to announce another licensing deal for the technology in the near future.
Advanced additives MPI Chemie has continued to see the value in optimis- ing its brominated polystyrene (BpS) for pBT and nylon applications. The company says that it uses a patented technology to ensure that its new milebrome 9010 has a higher molecular weight than other BpS products on the market, including its own milebrome 3030 and 7010 grades. The new BpS is expected to result in signifi- cantly improved performance of nylon 6 and 66 compounds produced at high processing temperatures. The company has also recently added mileflame 206, a new phosphorus-nitrogen mixture for pE and pp applications. Georg H. Luh recently announced that it is one of the
first companies to complete rEAcH-registration for expandable graphite, which the company has been promoting as a halogen-free flame retardant for polymers, primarily polymer foams, films and coatings. Through a special treatment, this natural mineral is transformed into a highly-effective and environmentally- compatible flame retardant additive. The graphite expands to a hundred times its original volume from the effect of heat generated by a fire, forming an intumescent layer on the material surface. This layer stops or slows
38 compounding world | december 2011
down the spread of fire and combats the propagation of toxic gases and smoke. luh’s latest innovation is the introduction of its expandable graphite in highly-loaded, dust-free masterbatches based on pp, pS and nylon. Clariant Additives has just launched two new Exolit
grades – Ep 150 and Ep 200 – which have been developed specifically for epoxy laminates used in printed circuit boards. The low-dosage, non-halogen- ated reactive flame retardants were unveiled in Europe at Ami’s Fire resistance in plastics conference in cologne, germany, on 30 november. currently available as laboratory product samples,
Ep 150 and Ep 200 have very high phosphorous contents of 25% and 29% respectively. This means that low loading levels can deliver the required fire protec- tion. For example, ul 94 V0 fire ratings can be achieved with a 50% lower dosage than for conventional flame retardants, claims clariant. Exolit 150 is available as low viscosity liquid for
infiltration processes, while Ep 200 is available in solid form. The company hopes that that they will meet growing demand for non-halogenated laminates which have grown from a market share of 2% in 2004 to 13% in 2010. Perstorp has traditionally targeted its charmor
polyols at applications in fire protection coatings, but at the end of last year it launched a new grade specifically for use as an additive in thermoplastics. charmor pp100, meeting requirements for lower smoke release, non-dripping plastics and non-toxic fumes. charmor polyols are rich carbon sources that are
combined with a suitable nitrogen or phosphoric acid donor to produce effective intumescent systems. The halogen-free Fr systems work by forming a thick,
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