Oligomeric benzil ketals and their use as photoinitiators
US4950795A · kind A · utility
9Cited by
7References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 18, 1988 |
| Grant date | Aug 21, 1990 |
| Priority date | — |
| Expiry date | Aug 18, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S522/904
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Compounds of the formula I ##STR1## in which n is 1-30 and X, Y, R, Ar.sup.1 and Ar.sup.2 are as defined in claim 1 can be prepared by reaction of a benzil dialkyl ketal with a diol. Depending on the molar ratio of the two reaction components, products having a different polycondensation degree n are obtained. The compounds can be used as photoinitiators.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.