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US 11,454,022 B2Granted
Glass fiber-reinforced polyurethane/polyisocyanurate foam insulation board
AssigneeDow Global Technologies LLC
InventorsGiuseppe Vairo, Luigi Bertucelli, Elena Ferrari
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Abstract
External thermal insulation composite systems described herein include a concrete or masonry wall and a thermal insulation board on the concrete or masonry wall. The thermal insulation board includes a polyurethane/polyisocyanurate foam having a density of less than 70 kg/m3 according to ASTM D 1622. Methods of preparing the external thermal insulation composite systems and the thermal insulation boards are also described.
Claims9
An external thermal insulation composite system, comprising:
- (i) a concrete or masonry wall;
- (ii) a thermal insulation board on an external surface of the concrete or masonry wall, the thermal insulation board comprising a polyurethane/polyisocyanurate rigid foam reinforced with glass fibers, wherein the polyurethane/polyisocyanurate foam has a density of less than 70 kg/m3 according to ASTM D 1622;
- wherein the polyurethane/polyisocyanurate foam has an isocyanate index of from 180 to 600;
- and
- wherein the polyurethane/polyisocyanurate foam has a reinforced structure due to being cured in the presence of one or more glass fiber mats.
2 more elements
Dependencies are inferred from the claim text.