URETHANE HAVING IMPROVED INSULATION PERFORMANCE AND REFRIGERATOR HAVING SAME APPLIED THERETO
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United States of America Patent
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Issued Date -
Aug 8, 2024
app pub date -
Apr 19, 2024
filing date -
Dec 21, 2021
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Abstract
The invention disclosed in the present specification relates to urethane that has insulation performance improved by lowering the thermal conductivity of urethane, and to a refrigerator having same applied thereto. The urethane having improved insulation performance comprising a plurality of closed cells containing internal gas generated from foaming; a plurality of open cells connected to outside air; and cell walls arranged between a closed cell among the plurality of closed cells and an open cell among the plurality of open cells or between the plurality of closed cells to connect the closed cells and the open cells, or the plurality of closed cells; and have a thermal conductivity (λurethane) 17 to 18.5 mW/m·K.
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