Pressure-sensitive copying material
US3967835A · kind A · utility
6Cited by
3References
8Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jul 8, 1975 |
| Grant date | Jul 6, 1976 |
| Priority date | — |
| Expiry date | Jul 8, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/25
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A pressure-sensitive copying material comprising a support having thereon a microencapsulated color former capable of forming a distinct color when reacted with an electron-accepting solid, the microencapsulated color former comprising at least one benzoxazine derivative represented by the formula (Ia) ##SPC1## , a benzodioxane derivative represented by the formula (Ib) ##SPC2## And a mixture thereof, wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and X are as defined hereinafter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.