08/07/2012

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Dow Automotive System introduces new interior trim adhesives

MOR-AD 301 adhesive, especially developed to meet the requirements in the automotive headliner business, functions as a drop-in replacement within the well established and widely used production parameters to produce one-step and two-step headliners. According to Dow Automotive Systems, with the MOR-AD 301 adhesive, the performance expectations created by its predecessors, the MOR-AD 460 series, are fully met if not exceeded. MOR-AD 301 adhesive, a solvent and NMP-free sandwich adhesive, undercuts the required VOC and fogging levels from VDA 278 significantly, and even shows no significant volatiles after the cure, says the company. Relating to the stepwise implementation of REACH and accompanying new classification of all raw materials, MOR-AD 301 adhesive does not contain any DBTDL (di-butyl-tin-di-laurate), the widely used catalyst in the PU adhesive segment. In consequence, potential requirements from the automotive OEMs to remove this catalyst have been taken into account and, with MOR-AD 301, already been delivered, says Dow Automotive Systems. MOR-AD 501 adhesive, representing a solvent-based, highly reactive laminating adhesive, meets the VDA 278 defined limits and is also manufactured without NMP. The exceptional reactivity as well as its new composition provide a shorter drying time. It thus has the potential for additional productivity gains within the standard lamination process, says the company. In addition, MOR-AD 501 adhesive is DBTDL-free as well.MOR-AD 301 adhesive typical properties Description Free of solvents and DBTDL; one-component Physical data Dry solids (%): >99.99 Viscosity (25 °C): 1300 - 1800 mPa*s Open time: 50 - 65 min (20 °C; 50 % relative humidity) Application Rollercoating, preferably at 55 - 60 °C Recommended coating weight: 40 - 45 g/m2 (applying with glass fibre at a density 90 - 100 g/m2) Water spray at 15 - 20 g/m2 for 40 - 45 g/m2 of adhesive Press time 25 - 30 s at 120 - 130 °C   MOR-AD 501 adhesive typical properties Description Free of solvents and DBTDL; one-component Physical data Dry solids (%): 38 - 42 Viscosity (25 °C): 100 - 150 mPa*s Drying time: 2 - 3 min (20 °C; 50 % relative humidity) Application Spraying, preferably using a 1,0 - 1,7 mm nozzle Recommended coating weight: 50 - 70 g/m2 (wet) Press time 10 - 30 s at room temperature; completely cured after 24 hours

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