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Ensinger PEI
Accella Bayblock® HT Acrylic Coating
Categories: Polymer; Thermoplastic; Acrylic (PMMA)

Material Notes: Characterization: Bayblock HT is a technologically advanced, high-solids, alkali resistant, thixotropic,acrylic elastomeric coating.

Properties / Applications: Bayblock HT is formulated for the protection of sprayed-in place polyurethane foam, metal, polyurea, stucco, siding, and concrete. It is a specially formulated adhesion basecoat with plasticizer migration resistance and contrasting color to help achieve proper coverage and accelerated cure.Bayblock HT coating provides an excellent protective membrane that remains flexible even under adverse conditions. Its elongation and tensile strength provides superior resistance to maintenance traffic, weather conditions, and wear. Bayblock HT coating was specifically developed as a protective coating for sprayed polyurethane foam surfaces. The thixotropic nature of Bayblock HT coating permits uniform high build coverage, even on rough, textured or vertical surfaces, without pinholing or sagging. It also has excellent adhesion to a variety of other substrates such as primed wood, primed metal, concrete and masonry. Ponding water conditions should be avoided, if possible, as with any type of roofing material. However, Bayblock HT coating can be used in limited areas with ponded water where a primer is used in conjunction with the coating. As with any product, use of Bayblock HT coating in a given application must be tested (including but not limited to field testing) in advance by the user to determine suitability.

Covestro sold their spray polyurethane foam business to Accella in 2017.

Available Properties
  • Solids Content, ASTM D2697, by volume
  • Solids Content, ASTM D1644, by weight
  • Viscosity Measurement, ASTM D D562, KU + 2 (krebs units)
  • Tensile Strength at Break, ASTM D2370
  • Elongation at Break, ASTM D412
  • Tear Strength Test, ASTM D624, [psi]
  • Peel Strength, ASTM C794-D903, peel strength to foam
  • Maximum Service Temperature, Air
  • Minimum Service Temperature, Air
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