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:
Mar. 10, 2026
Filed:
Mar. 02, 2023
Jintex Corporation Ltd., Taipei, TW;
JINTEX CORPORATION LTD., Taipei, TW;
Abstract
The present disclosure provides a method of preparing a bio-based waterborne polyurethane intermediate. The method comprises the following steps: (a) mixing bio-based isocyanate compound, sorbitol, fatty acid-substituted glycolipid, dihydroxyl-terminated polydialkylsiloxane, and a solvent; (b) adding a first initiator to a mixture of step (a) to carry out polymerization; and (c) adding water, an emulsifier, and acetic acid to the product of step (b) to form the bio-based waterborne polyurethane intermediate. The present disclosure also provides a method of preparing a bio-based polyurethane-acrylic hybrid fluorine-free water repellent. The bio-based polyurethane-acrylic hybrid fluorine-free water repellent is derived from aforesaid bio-based waterborne polyurethane intermediate and an acrylic-based fluorine-free water repellent.