Processable high temperature polymers prepared from amine terminated polymers and cyanamides of polyfunctional secondary amines
US3943107A · kind A · utility
9Cited by
5References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 4, 1974 |
| Grant date | Mar 9, 1976 |
| Priority date | — |
| Expiry date | Jan 4, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31725
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention provides compositions containing amine terminated high temperature prepolymers such as polyimides, polyamide-imides or the corresponding polyamide-acids in combination with cyanamides of polyfunctional secondary amines and the crosslinked polymers obtained therefrom. These cyanamides are reactive fluxes which facilitate processing of the high temperature prepolymer resin by lowering the softening temperature under processing conditions, and they also chain-extend and cross-link the prepolymer resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.