	US 12,234,576 B2
	Photochromic thermal insulation fiber and manufacturing method thereof
Jo-Cheng Chiang, New Taipei (TW); and Chao-Huei Liu, New Taipei (TW)
Assigned to TAIWAN TEXTILE RESEARCH INSTITUTE, New Taipei (TW)
Filed by TAIWAN TEXTILE RESEARCH INSTITUTE, New Taipei (TW)
Filed on Mar. 17, 2022, as Appl. No. 17/697,531.
Claims priority of application No. 110119573 (TW), filed on May 28, 2021.
Prior Publication US 2022/0389619 A1, Dec. 8, 2022
Int. Cl. D01F 1/06 (2006.01); C08J 3/22 (2006.01); C08L 23/12 (2006.01); D01D 1/04 (2006.01); D01D 5/10 (2006.01); D01F 1/10 (2006.01); D01F 8/06 (2006.01)

CPC D01F 1/06 (2013.01) [C08J 3/22 (2013.01); C08L 23/12 (2013.01); D01D 1/04 (2013.01); D01D 5/10 (2013.01); D01F 1/10 (2013.01); D01F 8/06 (2013.01); D10B 2321/022 (2013.01); D10B 2401/20 (2013.01)]

5 Claims

1. A photochromic thermal insulation fiber, comprising:

a core layer, the core layer comprising:

99 parts by weight to 100 parts by weight of polypropylene; and

0.4 parts by weight to 0.6 parts by weight of a photochromic dye; and

a sheath layer covering the core layer, the sheath layer comprising:

98 parts by weight to 99 parts by weight of nylon;

0.1 parts by weight to 0.2 parts by weight of an ultraviolet absorber; and

1 part by weight to 2 parts by weight of a near-infrared reflecting dye.