Mold-release additives

Mold-release additives are available in several forms powder, flake, liquid, or paste. High-bulk-density powders and pills have been introduced, and non-dusting grades are available. They may be added at the reactor stage of processing, or later by the compounder using melt-compounding extruders or mills. Powders may also be dusted on pellets (43). 

Jet Amine. [Jetco] Fatty amines or diamines emulsifier, corrositxi inhibitor, ore flotation agent dispersant mold release, additive for lube and fuel oils intermediate for quats, surfactants, agric. and detergent formulations. 

Mold-release additives supply external, surface lubrication to the polymer part. Being generally incompatible with the polymer, they accumulate at the surface of the cooling part and prevent it from sticking to the mold or to... 

Given the low surface friction characteristics they impart, mold-release additives are related to slip additives used in extrusion, discussed in the next chapter. Some overlap with the migratory flow-enhancing lubricants mentioned above. Mold-release agents are typically based on one or more of the following chemistries ... 

Crodamide, Slip, antiblocking, and mold release additives, Croda... 

Fationic 1042 Is used as an additive to polyolefins, sty-renics, PVC, TPB s and TPO s. The product can be used as an antistatic agent, an internally coagiounded mold release additive, a flow modifier, and an internal lubricant. It is specifically designed for use in the plastics industry by polymer producers, compounders, and concentrate manufacturers. 

K. J. Kim, J. Wasko, and M. Hensel, Mold release additive effects on chlorine and fluorine rubber compound , 2 International Rubber Molding Conference (IRMC2004) (paper no. 7) Cleveland, OH, April (2004)... 

Because plastics are almost invariably modified with one or more additives, there are three components of chemical analysis the high molecular weight portion, ie, the polymer the additives, ie, plasticizer and mold-release agent and the residuals remaining from the polymerization process. The high... 

Reaction of TYZOR TPT with polyperfluoroalkylene ethers containing a carbonyl group produces a complex that is an excellent surface-treating agent, imparting improved surface wettabiUty and anticorrosion properties to metal surfaces (144). These complexes can be used by themselves, or as additives to perfluoropolyethers as vacuum pump oils, lubricant oils, or mold release agents. 

Unsaturated polyester resin powders can provide a colored and finished exterior molded surface or a finish ready for painting. Normally, a primer/sealer must be appHed to molded articles prior to painting. In addition to the unsaturated polyester resin, multifimctional unsaturated monomers such as triaHyl cyanurate (TAC) [101-37-1] or diaHyl phthalate (DAP) [131-17-9] suitable peroxide initiators (qv) or mixtures thereof, and mold release agents (qv) are used to formulate the coating powder (46). 

Add wood furnish (384 g, moisture content 6.02%) to the bowl of a rotary blade paddle mixer (such as a Kitchen-Aid KSM90) and agitate at the lowest speed setting. Add Mondur 541 (7.39 g, 1.9% w/w, a polymeric diphenylmethane diisocyanate of 31.5% NCO, Bayer) dropwise over a 5-min period using a disposable syringe. Continue blending for an additional 10 min and then transfer the blend to an 8 x 8 x 2 -in. metal form at the bottom of which is a metal plate which fits inside. The resin-coated furnish is evenly spread inside the form and another metal plate is placed on top. All parts of the form and plates are presprayed with mold release. The completed form assembly is placed into a hydraulic press (such as a model PW-22 manufactured by Pasadena Hydraulics) with platens heated at 350°F. The furnish is then pressed between the two form plates to a thickness of j in. Press controls are used to ensure consistency of board thickness. The assembly is heated for 4 min. before demolding the cured wood panel. 

There are also hundreds of additives used as process aids to improve such things as air release, cure rate, thickening, viscosity reduction, mold release, wetting and dispersion of fillers, thixotropy, shrinkage and static reduction. 

Several additives are common in producing moldable ABS resins. These include lubricants, mold release agents, antistatic agents, heat stabilizers, light stabilizers and flame retardants (65). 

None of these waxes, including the standard, Staiiolind 170/5, was entirely satisfactory. The addition of graphite to the compns, the use of some mold release compds, and a change to a chromium plated punch did not improve the pelleting characteristics... 

Additives and mold release agents are commonly employed in the formulation. 

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