PHOTOCHROMIC THERMAL INSULATION FIBER AND MANUFACTURING METHOD THEREOF
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United States of America Patent
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Issued Date -
Dec 8, 2022
app pub date -
Mar 17, 2022
filing date -
Mar 17, 2022
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Abstract
The present disclosure provides a photochromic thermal insulation fiber including a core layer and a sheath layer covering the core layer. The core layer includes about 99 parts by weight to 100 parts by weight of polypropylene and about 0.4 parts by weight to 0.6 parts by weight of a photochromic dye. The sheath layer includes about 98 parts by weight to 99 parts by weight of nylon and about 1 part by weight to 2 parts by weight of a near-infrared reflecting dye.
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