Bis benzoyl sensitizers for photopolymerization or photo cross linking process and composition
US4321118A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 1979 |
| Grant date | Mar 23, 1982 |
| Priority date | — |
| Expiry date | Dec 19, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/122
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Aromatic-aliphatic ketones of the formulae I, II, III or IV ##STR1## wherein n is 1 or 2, Ar is an aryl radical, R.sup.1 and R.sup.2 are monovalent aliphatic, cycloaliphatic or araliphatic radicals, R.sup.3 is a direct bond or a divalent organic radical, X is a hydroxyl or amino group or the monovalent etherification or silylation products thereof, and X' is a divalent amino, ether or silyloxy group, Y is a direct bond or CH.sub.2 and Z is O, S, SO.sub.2, CH.sub.2 or C(CH.sub.3).sub.2, are suitable sensitizers for the photopolymerization of unsaturated compounds and for the photochemical crosslinking of polyolefins. Some of these compounds are novel and can be obtained by methods analogous to those for obtaining the known compounds of this type.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.