Thermosetting quinazolone resins their preparation and their applications
US4931541A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 1989 |
| Grant date | Jun 5, 1990 |
| Priority date | — |
| Expiry date | Feb 22, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F38/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Thermosetting quinazolone resins, their preparation and their applications re described. These thermosetting quinazolone resins can be defined as having the following general formula: ##STR1## in which Ar.sup.1 is a bivalent mono- or polycyclic aromatic radical and Ar.sup.2 is a bivalent aromatic radical of several simple aromatic rings bound two by two by atoms or bivalent groups. These Ar.sup.1 and Ar.sup.2 radicals are chosen so that the melting or emollescence temperature is between 80.degree. C. and 170.degree. C. The resins can be prepared from condensation of an ethynylarylbenzoxazinone with an aromatic diamine containing flexibilizing groups. These quinazolone resins can be polymerized in bulk in order to prepare adhesives or composite matrices in particular.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.