.alpha.,.omega.-Diarylpolyene photosensitizers for sulfonylazide

.beta.-Diketones and the use thereof as metal extractants

.omega.-Alkoxy derivatives of lactams and process for their manu

1,1,1-Trihalogeno-4-methylpentenes, method of preparing the same

1,1,1-Trihalogeno-4-methylpentenes, method of preparing the same

2-Hydroxyethylphosphines

4,4'-Diphenyl ether-dialdehyde-bis-dimethylacetal and a process

Abatement of hazardous gases in effluent

Abrasion-resistant optical coating composition containing pentae

Abrasive article

Abrasive polishing method

Absolute pressure sensor

Absorption of chlorine gas

AC Etching of aluminum capacitor

AC Etching of aluminum capacitor foil

AC Etching of aluminum capacitor foil

AC Etching of aluminum capacitor foil

AC Etching of aluminum capacitor foil

AC Etching of aluminum capacitor foil

AC Etching of aluminum capacitor foil