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:
May. 11, 1993
Filed:
Jan. 06, 1992
Applicant:
Inventors:
Gerald E Manser, Folsom, CA (US);
Richard S Miller, Crafton, MD (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ;
U.S. Cl.
CPC ...
525410 ; 525186 ; 525206 ; 525251 ; 525412 ; 525299 ; 528408 ; 528417 ; 149 196 ;
Abstract
Novel block polymers which are thermoplastic elastomers which are thermoplastic elastomers are provided for use as binders in high-energy compositions such as propellants, explosives, gasifiers or the like. The block polymers have an ABA structure wherein the A blocks are crystalline at temperatures below 60.degree. C. and the B blocks are amorphous at temperatures above -20.degree. C. Both the A and B blocks are polyethers formed from monomers of oxetanes and/or tetrahydrofuran. The block polymers melt in the range of 60.degree. C. to 120.degree. C. and have low viscosities above their melting points due to mutual miscibility of the A and B blocks.