The present invention relates to the improved synthesis of chlorinated acetophenones (CAP) of formula (I). Particularly, the invention shows a way how to reduce the use of chlorinated solvents and the formation of chlorinated volatile by-products in the synthesis. ##STR00001##

The present invention relates to the improved synthesis of chlorinated acetophenones (CAP) of formula (I). Particularly, the invention shows a way how to reduce the use of chlorinated solvents and the formation of chlorinated volatile by-products in the synthesis. ##STR00001##

The present invention relates to the improved synthesis of chlorinated acetophenones (CAP) of formula (I). Particularly, the invention shows a way how to reduce the use of chlorinated solvents and the formation of chlorinated volatile by-products in the synthesis. ##STR00001##

A fluorenylaminoketone photoinitiator, a preparation method thereof, and a UV photocurable composition containing same. The photoinitiator has a compound having a structure as shown in general formula (I) or a derivative compound thereof. The fluorenylaminoketone photoinitiator may effectively improve the solubility of traditional photoinitiators and reduce the use of micromolecular active diluents, and may also have high sensitivity and good deep-layer curing. It has very good promotion effect on popularization and application of photocurable compositions, particularly colored ink systems, in the field of photocuring. A UV photocurable composition containing such a fluorenylaminoketone photoinitiator can have an advantage in terms of high sensitivity, no residue after development, good pattern integrity, no or little odor of coating layers after curing, or excellent yellowing resistance.

A fluorenylaminoketone photoinitiator, a preparation method thereof, and a UV photocurable composition containing same. The photoinitiator has a compound having a structure as shown in general formula (I) or a derivative compound thereof. The fluorenylaminoketone photoinitiator may effectively improve the solubility of traditional photoinitiators and reduce the use of micromolecular active diluents, and may also have high sensitivity and good deep-layer curing. It has very good promotion effect on popularization and application of photocurable compositions, particularly colored ink systems, in the field of photocuring. A UV photocurable composition containing such a fluorenylaminoketone photoinitiator can have an advantage in terms of high sensitivity, no residue after development, good pattern integrity, no or little odor of coating layers after curing, or excellent yellowing resistance.

Provided are a preparation method of pyrrolo-amino-pyridazinone compound and an intermediate thereof. The reaction conditions are easy to control, the processing following the reaction is simple, the production rate is high, and the method is advantageous for industrial production.

Provided are a preparation method of pyrrolo-amino-pyridazinone compound and an intermediate thereof. The reaction conditions are easy to control, the processing following the reaction is simple, the production rate is high, and the method is advantageous for industrial production.

The invention relates to a new process for the manufacture or synthesis, respectively, of fluorinated benzenes and fluorinated benzophenones, and derivatives thereof, in particular of fluorobenzenes and derivatives thereof. The present invention particularly pertains to a novel environmentally friendly process for the synthesis of fluorinated benzenes and benzophenones as raw materials for the manufacture of polyaryletherketones (PAEKs).

The invention relates to a new process for the manufacture or synthesis, respectively, of fluorinated benzenes and fluorinated benzophenones, and derivatives thereof, in particular of fluorobenzenes and derivatives thereof. The present invention particularly pertains to a novel environmentally friendly process for the synthesis of fluorinated benzenes and benzophenones as raw materials for the manufacture of polyaryletherketones (PAEKs).

The invention relates to a new process for the manufacture or synthesis, respectively, of fluorinated benzenes and fluorinated benzophenones, and derivatives thereof, in particular of fluorobenzenes and derivatives thereof. The present invention particularly pertains to a novel environmentally friendly process for the synthesis of fluorinated benzenes and benzophenones as raw materials for the manufacture of polyaryletherketones (PAEKs).