Thermoplastic elastomers having alternate crystalline structure for us as high energy binders
US5210153A · kind A · utility
Inventors
Key dates
| Filing date | Jan 6, 1992 |
| Grant date | May 11, 1993 |
| Priority date | — |
| Expiry date | Jan 6, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G81/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.