S-Triazine prepolymers and a process for their production
US4042567A · kind A · utility
15Cited by
4References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 28, 1975 |
| Grant date | Aug 16, 1977 |
| Priority date | — |
| Expiry date | Nov 28, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G73/065
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
S-Triazine prepolymers with aromatic cyanate groups are obtained by condensation of aromatic di- or polyhydroxy compounds with 0.01 to 0.5 mol of 4,6-dichloro-s-triazine per one hydroxy group. Subsequently the condensation products are reacted with cyanogen halide in the presence of a base. s-Triazine prepolymers may be polymerized to form hard plastics with resistance to high temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.