4,4'-(perfluoroisopropylidene)dicyclohexanol, derivative thereof

4,4'-Alkylenedipiperidine derivatives

4,4'-biphenylenediphosphonite compound and use thereof

4,4'-Bipiperidylidene derivatives and their use as stabilizers

4,4'-Bis(3-ethynylphenoxy)diphenylsulfone

4,4'-Bis(4-hydroxyphenyl thio)biphenyls

4,4'-bis(methacryloylthio)diphenylsulfide

4,4'-bis(phthalimido)diphenyl sulfone compounds, processes for t

4,4'-bis-(.beta.-hydroxyethylsulfonyl)-biphenyl and its esters

4,4'-Bis-(s-triazin-6-yl-amino)-stilbene-2,2'-disulphonic acid

4,4'-bis[2-(4-hydroxy-amino-phenyl)hexafluoroisopropyl]-diphenyl

4,4'-diaminodiphenyl compounds, process for their preparation an

4,4'-diisocyanto-phenylbenzylether, a process for the preparatio

4,4'-Diphenyl ether-dialdehyde-bis-dimethylacetal

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

4,4'-disubstituted 2',3-difluorobisphenyls and a liquid-crystall

4,4'-Disubstituted diphenylamines and the use thereof in dye com

4,4'-Dithiodianil

4,4'-Furfurylidene bis(2,6-di-tert-butylphenol)antioxidant

4,4'-Isopropylidene-bis(3- and 4-phenyleneoxyphthalic anhydride)