Process for preparation of benzoxazine compounds in solventless systems
US5543516A · kind A · utility
87Cited by
2References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 18, 1994 |
| Grant date | Aug 6, 1996 |
| Priority date | — |
| Expiry date | May 18, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D265/16
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method for preparing a desired benzoxazine compound comprises preparing a substantially homogeneous reaction mixture that includes a phenolic compound; a primary amine; and an aldehyde, but no solvent other than for the solvency which the reactants may have for each other. Following its preparation, the reaction mixture is maintained at a temperature, and for a period sufficient to cause the reactants to combine chemically to form the desired compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.