Polymers used in elastomeric binders for high-energy compositions
US5747603A · kind A · utility
10Cited by
21References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 19, 1987 |
| Grant date | May 5, 1998 |
| Priority date | — |
| Expiry date | May 19, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G65/336
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Difunctional, hydroxyl-terminated polymers in which the terminal hydroxyl group is non-primary or hindered are end-capped to provide unhindered, primary, terminal hydroxyl groups which promote an improved cure and improved mechanical properties of the cured elastomer. End-capping chemicals have an hydroxyl-reactive group at one end and a group at the other end which is removable to provide a primary, unhindered hydroxyl group. Short-chain, hydroxyl-terminated polymers are chain-extended with a diisocyanate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.