Polyurethane-based insulation board
AssigneeDow Global Technologies LLC
InventorsGiuseppe Vairo, Elena Ferrari, Luigi Bertucelli, Alberto Fangareggi
Life of this patent
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Abstract
External thermal insulation composite systems described herein include a concrete or masonry wall and a multilayer thermal insulation board disposed on the concrete or masonry wall. The multilayer thermal insulation board includes at least one closed cell foam layer comprising polyurethane and polyisocyanurate having an open cell volume of less than 20% by volume according to ASTM D 6226 and at least one open cell foam layer comprising polyurethane and polyisocyanurate having an open cell volume of greater than 80% by volume according to ASTM D 6226.
Claims11
An external thermal insulation composite system, comprising:
- (i) a concrete or masonry wall;
- (ii) a multilayer thermal insulation board disposed on the concrete or masonry wall, the multilayer thermal insulation board including at least one closed cell foam layer comprising polyurethane having an open cell volume of less than 20% by volume according to ASTM D 6226 and at least one open cell foam layer comprising polyurethane having an open cell volume of greater than 80% by volume according to ASTM D 6226.
A method of preparing an external thermal insulation composite system comprising:
- providing a concrete or masonry wall;
- providing a multilayered thermal insulation board that comprises at least one closed cell foam layer comprising polyurethane having an open cell volume of less than 20% by volume according to ASTM D 6226 and at least one open cell foam layer comprising polyurethane and polyisocyanurate having an open cell volume of greater than 80% by volume according to ASTM D 6226;
- attaching the multilayered thermal insulation board to an external surface of the concrete or masonry wall;
- and
- applying a reinforced coating comprising glass fiber mesh on the multilayered thermal insulation board attached to the external surface of the concrete or masonry wall.
Dependencies are inferred from the claim text.