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:
Feb. 20, 2001
Filed:
Jul. 16, 1999
Applicant:
Inventors:
Kun Lin Cheng, Tu-Cheng, TW;
Wen-Tung Chen, Tu-Cheng, TW;
Assignee:
China Textile Institute, Taipei Hsien, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J 3/00 ; C08K 3/20 ; C08L 7/500 ;
U.S. Cl.
CPC ...
C08J 3/00 ; C08K 3/20 ; C08L 7/500 ;
Abstract
The present invention consists of a method for the preparation of an anionic water dispersible polyurethane(PU), which has excellent adhesive properties. The preparation method involves the formation of prepolymer from polyisocyanates and an active hydrogen containing compound such as polyols, followed by chain extension with aliphatic diols or diamines, and finally by chain extension with N-(2-aminoalkyl-2-aminoethoxylate ethane sulfonate and dispersion of the reaction product by deionized water to obtain water-borne polyurethane adhesive.