ISO-C1® Polyiso Pipe, Tank and Equipment Insulation

  1. Superior Aged k-factor down to 0.16 Btu•in/hr•ft2•°F at 75°F
  2. FM Specification Tested; Class 1 per ASTM E84
  3. Meets or Exceeds ASTM C591 Requirements
  4. Lowest Water Vapor Transmission and Thermal Conductivity in the Industry
  5. Suitable for Process Temperatures from -297°F to +300°F

ISO-HT® Polyisocyanurate for Hot Process and Low Temperature Steam

  1. For continuous temperatures up to 350°F (177°C), Intermittent to 375°F (190°C)
  2. Class 1 Flame/Smoke per ASTM E84
  3. Excellent thermal performance: 0.16 BTU•in/hr•ft2•°F at 75°F
  4. Flexible sheets to fit around tanks

ISO-C1® Polyiso Sheets for Insulated Panels

  1. Excellent aged k-factors down to 0.16 Btu•in/hr•ft2•°F at 75°F
  2. Class 1 flame/smoke per ASTM E84
  3. Widths up to 52 inches and lengths up to 24 feet
  4. Any thickness: as thin as 0.125", with +/- 0.03125" tolerances
  5. Excellent flexibility to wrap tanks
  6. FM4880 Approvals

ISO-CF® Polyiso for Core Foam

  1. Excellent strength-to-weight ratios
  2. Class 1 flame/smoke per ASTM E84
  3. Widths up to 52 inches and lengths up to 24 feet
  4. Any thickness: as thin as 0.125", with +/- 0.03125" tolerances
  5. Excellent flexibility
  6. FM4880 Approvals

Dyplast EPS

  1. Block molded EPS
  2. Densities: 1.0, 1.25, 1.5, 2.0 pcf
  3. Fabricated into pieces with various configurations
  4. Applications for numerous market segments

An Insulation System For Each Temperature Range


Why Use Pentane, a Hydrocarbon?

Polyisocyanurate foams were traditionally produced using CFC-11 (a chloro-fluorocarbon) as the blowing agent. When evidence became irrefutable that CFCs destroyed stratospheric ozone, most of the world adopted the ground-breaking Montreal Protocol, which mandated the phaseout of CFCs for non-essential uses by 1996. Many polyiso producers gradually transitioned to HCFC-141b (a hydro-chlorofluorocarbon), which has only 10% to 12% the ozone-depletion potential of CFC-11. But since HCFC-141b was recognized as the most damaging of the HCFCs, HCFC-141b would be only a temporary solution. (Modifications to the Montreal Protocol later mandated the phaseout of this chemical by 2003.)

As polyiso manufacturers studied possible substitutes for HCFC-141b, two different hydrofluorocarbons emerged as possible substitutes: HFC-245FA and HFC-365. HFCs have the advantage of being non-ozone-depleting (since they don't contain chlorine or bromine), but they are significant greenhouse gases. Most HFCs are also expensive to manufacture.

Another alternative was a hydrocarbon blowing agent - - pentane. Hydrocarbon blowing agents have the advantage of being less expensive, but their flammability requires special safety measures at manufacturing plants. Yet the cured foam is no more flammable than HCFC-blown foam.

As for energy performance, leading industry experts report there is no appreciable change in R-value with the hydrocarbon-blown foams. The finer cell structure of pentane-blown foams, for instance, tends to offset the pentane's higher thermal conductivity. Pentane-blown foams have another advantage: better dimensional stability due to the fact that pentane does not condense as much as HCFC-141b at temperatures normally experienced by the foam in use. The condensation of HCFC-141b causes the cells to shrink and expand on a cyclical basis, reducing dimensional stability."