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:
Oct. 28, 2014
Filed:
May. 15, 2013
Applicant:
Agency for Defense Development, Daejeon, KR;
Inventors:
Bum Jae Lee, Daejeon, KR;
In Joo Bae, Daejeon, KR;
Jin Seuk Kim, Daejeon, KR;
Seung Hee Kim, Daejeon, KR;
Assignee:
Agency For Defense Development, Daejeon, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 63/91 (2006.01); C08G 65/325 (2006.01); C08G 65/32 (2006.01);
U.S. Cl.
CPC ...
C08G 65/325 (2013.01);
Abstract
Provided is a method for a poly(GAP-co-THF)diol prepolymer in which THF monomer units are copolymerized to GAP, having high difunctionality, a reduced amount of cyclic oligomer side products having a small molecular weight, a wide copolymer composition and controlled molecular weight. The resulted poly(GAP-co-THF)diol prepolymer according to the present invention is used as a binder for a high-energy PBX or composite propellant, specifically used as a binder in the preparation of polyurethane having excellent mechanical properties.