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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11142850 B1

PDFFull Text
Date of Patent:
Oct. 12, 2021

Filed:

Oct. 29, 2019

Easy-to-dye porous modified polyester fiber and preparing method thereof

Applicant:

Jiangsu Hengli Chemical Fibre Co., Ltd., Wujiang, CN;

Inventors:

Xiaohua Sun, Wujiang, CN;

Aiqi Kang, Wujiang, CN;

Lili Wang, Wujiang, CN;

Assignee:

JIANGSU HENGLI CHEMICAL FIBRE CO., LTD., Wujiang, CN;

Attorney:

Bayramoglu Law Offices LLC

Primary Examiner:

Leo B Tentoni

Int. Cl.
CPC ...
C07C 31/26 (2006.01); C08G 63/183 (2006.01); C08G 63/80 (2006.01); C08G 77/445 (2006.01); C08K 5/521 (2006.01); C08K 5/524 (2006.01); C08L 67/02 (2006.01); D01D 7/00 (2006.01); D01D 10/02 (2006.01); D01F 1/07 (2006.01); D02J 1/22 (2006.01); D02J 13/00 (2006.01); D01F 6/62 (2006.01); D01D 5/088 (2006.01); D01D 5/16 (2006.01); D01D 5/247 (2006.01); D01F 1/10 (2006.01); D01F 6/92 (2006.01); C01G 30/00 (2006.01); C08K 3/22 (2006.01); C08G 63/695 (2006.01);
U.S. Cl.
CPC ...
D01F 6/62 (2013.01); C01G 30/004 (2013.01); C01G 30/005 (2013.01); C08K 3/2279 (2013.01); D01D 5/088 (2013.01); D01D 5/16 (2013.01); D01D 5/247 (2013.01); D01F 1/10 (2013.01); D01F 6/92 (2013.01); D02J 1/228 (2013.01); C08G 63/695 (2013.01); C08K 2003/2241 (2013.01); D10B 2331/04 (2013.01); D10B 2401/10 (2013.01); D10B 2401/14 (2013.01);
Abstract

A type of easy-to-dye porous modified polyester fibers and preparing method thereof are disclosed. The preparing method is using the modified polyester melt through a porous spinneret with FDY process; wherein the modified polyester is a product of an esterification and successive polycondensation reactions of an evenly mixed terephthalic acid, ethylene glycol, main chain silicated diol, 2,2,3,4,5,5-hexamethyl-3,4-hexanediol, and metal oxide doped SbOpowder; wherein the main chain silicated diol is selected from the group consisting of dimethylsiloxane diol, dimethyldiphenyldisiloxane glycol and tetramethyldisiloxane diol. The structural formula of 2,2,3,4,5,5-hexamethyl-3,4-hexanediol is as follows: The dye uptake and the K/S value of the prepared easy-to-dye porous modified polyester fiber are high. This invention features a method with ease of application and a product with good dyeing performance and good quality.

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