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. 15, 2005
Filed:
Nov. 20, 2002
Herbert Shin-i Chao, Paoli, PA (US);
John Schmidhauser, Paoli, PA (US);
Alain Robert Drexler, Philadelphia, PA (US);
Nan Tian, Wilmington, DE (US);
Herbert Shin-I Chao, Paoli, PA (US);
John Schmidhauser, Paoli, PA (US);
Alain Robert Drexler, Philadelphia, PA (US);
Nan Tian, Wilmington, DE (US);
Sartomer Technology Company, Inc., Wilmington, DE (US);
Abstract
Improved amine-terminated polybutadienes (ATPBs) having one or two terminal groups of the formula —CHRNHwherein R is C-Calkyl, are prepared by aminating a secondary hydroxyl-terminated polybutadiene having no ether groups. The ATPBs may be hydrogenated or partially hydrogenated, either prior to or after the animation, to saturate or partially saturate the polymers. Preferred ATPBs are of the formula HNCHR-(polybutadiene)-CHRNHwherein R is C-Calkyl. Polyureas, polyurethanes, crosslinked epoxies, polyamides, and other derivatives with improved properties can be prepared from the ATPBs. The resultant derivatives are useful in liquid binders for braking systems, electric potting compositions, coatings, adhesives, sealants, and water proofing membranes, for example.