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.:
Date of Patent:
Jul. 08, 2025
Filed:
Nov. 20, 2024
Jiangsu Zhonglu Technology Development Corporation Limited, Suzhou, CN;
Shuchang Bian, Suzhou, CN;
Abstract
The present disclosure relates to a direct melt-spun full-matte high-viscosity PET/low-viscosity PET two-component elastic fiber and a preparation method thereof. A liquid titanium dioxide matting agent containing a specific carrier is added to the elastic fiber; the carrier is a linear polyester or a small molecule ester; each end of the linear polyester contains a carboxyl functional group or a hydroxyl functional group independently, and the molecular weight of the linear polyester is 1800˜2500; the small molecule ester has an ABA or BAB structure, where A is a dibasic acid, and B is a diol. When preparing the elastic fiber, prepolymer and the liquid titanium dioxide matting agent are polymerized together to prepare a high-viscosity component. By using this method, the viscosity of the high-viscosity components can be significantly improved, the quality and crimp shrinkage rate of the elastic fiber are high.