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:
Dec. 26, 1989
Filed:
Mar. 24, 1989
Applicant:
Inventors:
Paul M Hergenrother, Yorktown, VA (US);
John W Connell, Newport News, VA (US);
Stephen J Havens, Newport News, VA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528125 ; 548520 ; 528126 ; 528128 ; 528 ; 528212 ; 528215 ; 528218 ; 528219 ; 528220 ; 528224 ; 528228 ; 528229 ; 528373 ; 528374 ; 528216 ; 528314 ; 528315 ; 528310 ; 528321 ; 528322 ; 528170 ; 526252 ; 526262 ;
Abstract
Acetylene terminated aspartimides are prepared using two methods. In the first, an amino-substituted aromatic acetylene is reacted with an aromatic bismaleimide in a solvent of glacial acetic acid and/or m-c=resol. In the second method, an aromatic diamine is reacted with an ethynyl containing maleimide, such as N-(3-ethynylphenyl) maleimide, in a solvent of glacial acetic acid and/or m-cresol. In addition, acetylene terminated aspartimides are blended with various acetylene terminated oligomers and polymers to yield composite materials exhibiting improved mechanical properties.