Alumina Trihydrate (ATH), Magnesium Hydroxide (MDH ...

1 Alumina Trihydrate (ATH), Magnesium Hydroxide (MDH). and Kemgard Engineered Molybdate Compounds Precipitated Aluminum Hydroxides Flame Retardance and Smoke Suppression High Chemical Purity Advanced Surface-Treatment Technology Global Availability Dedicated to Outstanding Technical Service and Customer Care Flames and Smoke Don't Like Us . When it comes to high-performing, non-halogen With four manufacturing locations, fire retardant additives, Huber Engineered Huber's Fire Retardant three recent key acquisitions and a continual Additive Chemistry Offerings Materials is the only name you need to know. investment in expansion and the creation 3 Alumina Trihydrate (ATH). We offer a wide variety of flame retardants - Ground of innovative new products, Huber is and smoke suppressants for many different - Precipitated committed to providing fire retardant applications.

2 Metal hydroxides are the largest - Optimized products precisely designed for the intended - Surface-Treated volume flame retardants used worldwide. The 3 Magnesium Hydroxide (MDH). application. two most widely used products are Alumina - Technical Inside this brochure, you will find Trihydrate , also known as ATH or by its chemical - Premium - Surface-Treated information about why Huber's chemistry composition, Al(OH)3 and Magnesium 3 Molybdate Compounds imparts fire retardance, a list of some of Hydroxide , known as MDH or by its chemical Huber's key products sold to market and a composition Mg(OH)2. Huber ATH, MDH and Molybdate Brands guide to products by application. Huber manufactures many grades of ground 3.. Hydral Precipitated ATH.

3 And precipitated ATH, and we also produce 3.. Hymod Surface-Treated ATH Huber stands at the forefront of the flame a wide variety of surface-treated ATH retardant and smoke suppressant additive . 3 Kemgard Flame Retardants and Smoke Suppressants (Molybdates). products. In addition, we supply two types 3.. Micral ATH. industry providing product advancements of MDH, both of which are available in 3.. MoldX Optimized ATH and technical and service support that is surface-treated form. Lastly, Huber offers second-to-none. A consultative selling . 3 SpaceRite Precipitated ATH.. 3 Vertex MDH. a variety of Kemgard molybdate flame 3.. Zerogen MDH. process ensures our customers get products retardants and smoke suppressants. designed specific for their applications.

4 Comparing ATH and MDH. Thermal decomposition reaction (endothermic): Physical Property Comparison of ATH and MDH. 2Al(OH)3 Al2O3 + 3H2O H = -280 cal/g Property ATH MDH. Mg(OH)2 MgO + H2O H = -328 cal/g Physical form powder powder Take heat away from the flame Particle morphology Hexagonal Hexagonal platelet platelet Water vapors dilute volatile polymer decomposition products (fuel). Form protective metal oxide layer on polymer surface Color White White Specific gravity, g/cm3 Neither ATH nor MDH contain halogens. When exposed pH value 9 - 10 10 - 11. to heat, these metal hydroxides decompose to form Mohs hardness - - water molecules in an endothermic reaction. This results Refractive index in reduced flame spread and smoke generation.

5 Decomposition temperature 220 C / 428 F 330 C / 626 F. Heat of decomposition, cal/g 280 328. Theoretical loss on ignition 110. 100. This graph shows that Weight Loss (%). 90. MDH decomposes at a higher temperature 80 than ATH, making it useful for engineering 70 MDH thermoplastic resins ATH such as polyamides 60 and polypropylene. 0 100 200 300 400 500 600. Temperature ( C). 2. Huber's Key ATH and MDH Product Offerings Untreated ATH Median Particle Description Applications Products Size, Microns SB-30 90 Coarse ATH Applications tolerating coarse top size SB-36 25 Coarse ground ATH Carpet backing; Epoxy potting & encapsulation SB-136 19 Ground ATH SMC; BMC; Hand lay-up; Epoxy potting & encapsulation SB-332 11 Ground ATH Unsaturated polyester composites; Epoxy potting; Textiles SB-336 15 Ground ATH SMC; BMC; Hand lay-up; Wet mat; Laminating SB-432 9 Ground ATH Flame retardant roof coatings; Polyester and epoxy composites; Rubber SB-632 Ground ATH Polyurethane foam; Latex-based formulations Micral 532 5 Ground, fine ATH Wall coverings Micral AM550.

6 5 Ground, fine ATH Coatings; Adhesives; Epoxy Micral 632. Ground, fine ATH Rubber; Silicone; Ceramics; Polishing compounds Micral 932 2 Ground, ultrafine ATH SMC; BMC; Pultrusion; Gel coats; Silicone elastomers; Rubber Micral 1500. Ground, ultrafine ATH Wire Silicone elastomers; Coatings Treated ATH Median Particle Description Applications Products Size, Microns Hymod SB336 SE Ground ATH; Epoxy functional Epoxy Hymod SB432 SG 9 Ground ATH; Hydrophobic treatment High-moisture environments Hymod SB432 SH2.. 9 Ground ATH; Alkyl functional Composites Hymod M632 SP Ground ATH; Vinyl functional Peroxide-cured silicone rubber Hymod M1500 SPD Ground ATH; Vinyl functional Wire Rubber Optimized ATH Median Particle Description Applications Products Size, Microns MoldX A400 10 Optimized ATH; Best balance of physical SMC; BMC; Hand lay-up; Spray-up properties with outstanding fire retardance MoldX A110 10 Optimized ATH; Highest ATH loadings with SMC; BMC; Epoxy; Urethane processable viscosity MoldX S45 9 Optimized ATH; High loadings, good viscosity SMC; BMC; Pultrusion; Many composites applications MoldX P18 Optimized ATH; High glass content Pultrusion; Resin infusion MoldX P12 Optimized ATH.

7 Highest glass content Most stringent pultrusion applications Precipitated ATH Median Particle Description Applications Products Size, Microns Hymod M9400 SF 1 Precipitated ATH; Phenyl functional PVC; Wire & cable Hymod M9400 SP 1 Precipitated ATH; Vinyl functional Peroxide-cured silicone rubber; High-voltage insulators Hymod M9400 SG 1 Precipitated ATH; Alkyl functional Platinum-cured silicone rubber; Hydrophobic coatings Hydral 710.. 1 Precipitated ATH Wire Silicone elastomers Hydral PGA-SD 1 Precipitated ATH Wire & cable SpaceRite S-3 1 Precipitated ATH Glossy coatings; Color pigment extender Untreated Median Particle Description Applications MDH Products Size, Microns Vertex 60 Coarse technical MDH Roofing membrane; Rubber compounds Vertex 100 Fine technical MDH Wire & cable jacketing; Conduit MAGNIFIN H-5 Premium MDH Wire Electrical & electronics Treated MDH Median Particle Description Applications Products Size, Microns Vertex 60 HST Technical grade MDH, fatty acid treatment Roofing membrane; Rubber compounds Vertex 60 SV Technical grade MDH, proprietary surface treatment Plastic pallets; Injection molded plastics.

8 Conduit Zerogen 50 SP 1 Vinyl functional, premium MDH Wire Electrical & electronics Zerogen 100 SP.. Vinyl functional, premium MDH Wire Electrical & electronics Zerogen 100 SV Premium MDH with proprietary treatment Wire Electrical & electronics Note: Huber offers a comprehensive portfolio of flame retardants and smoke suppressants. The ATH and MDH products listed above represent a cross-section of key products commercially available. If you don't see the flame retardant or smoke suppressant you are seeking to meet your requirements, we invite you to contact us to discuss products available specific to your application or situation. 3. Applications and Huber Product Offerings for Flame Retardance and Smoke Suppression 1.

9 Fiberglass Reinforced Polyester Molding and Pultrusion Ground ATH 3 to 25 microns SB grades Micral grades MoldX Optimized ATH grades ATH is a cost-effective, non-reactive flame retardant used in a wide variety of molding compounds. Huber has a complete range of particle sizes to allow the compounder to achieve high loadings of ATH which improve flame retardant performance and reduce the amount of resin in SMC, BMC, pultrusion and other molding applications. 2. Wire and Cable Compounds Treated precipitated and ground ATH Hymod grades Untreated ATH 1-6 microns Hydral and Micral grades Treated and untreated MDH Vertex and Zerogen grades Molybdates Kemgard grades Wire and cable applications require flame retardance and low-smoke generation.

10 Huber has a broad line of molybdate, ATH and MDH products that impart outstanding smoke suppression in thermoplastic wire and cable products. Especially in high-performance applications, chemically-treated ATH. and MDH products offer these advantages compared with untreated ATH: Improves dispersion uniformity .Increases color stability Higher throughput rates Improves physical properties and Enhances flame retardant performance electrical performance 3. Engineering Thermoplastics Treated MDH Vertex grades Molybdates Kemgard grades The MDH decomposition temperature of 330 C (626 F) makes it ideal for use in thermoplastic systems which compound at high temperatures such as: Polypropylene Polycarbonate Polyamide Polybutylene Terephthalate (PBT).