Polyurethane chain-extenders
US4180644A · kind A · utility
42Cited by
1References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 31, 1978 |
| Grant date | Dec 25, 1979 |
| Priority date | — |
| Expiry date | Jul 31, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/3825
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Covers certain aromatic-amine amides which comprise the reaction product of an alkylene polyoxypropylene diamine, triamine, or tetramine and an isatoic anhydride of the formula: ##STR1## where R" is selected from the group consisting of hydrogen, alkyl, nitro, halo, hydroxy, amino, and cyano, and n is a number of 1-4. Also covers the use of said compounds as chain-extenders in polyurethane compositions. Such chain-extenders provide for the production of polyurethane elastomers having improved tensile strength, tear strength and elongation properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.