Inventor
IHRMAN KRYN G
13 patents
Patents
13 patentsUS4459399AJul 10, 1984
Polyurethanes and process therefor
ETHYL CORP9 citations73
US5204307AApr 20, 1993
Process for alkylation of aromatic diamines
ETHYL CORP7 citations72
US4314962AFeb 9, 1982
Phenol extended polyurethanes prepared by RIM process
ETHYL CORP17 citations72
US4066562AJan 3, 1978
Antioxidant
ETHYL CORP18 citations69
US5103059AApr 7, 1992
Process for alkylation of aromatic diamines
ETHYL CORP4 citations61
US4611045ASep 9, 1986
Monoalkylation of 1-alkyl-diaminobenzenes
ETHYL CORP3 citations61
US4440952AApr 3, 1984
1-Methyl-2,6-diamino-3-isopropyl benzene
ETHYL CORP5 citations61
US4317931AMar 2, 1982
Process for rearrangement of alkyl groups on aromatic amines
ETHYL CORP5 citations61
US4219502AAug 26, 1980
Aromatic amine alkylation process
ETHYL CORP5 citations54
US5057625AOct 15, 1991
Selective alkylation process
ETHYL CORP1 citations51
US4604484AAug 5, 1986
Monoalkylation of 1-alkyl-diaminobenzenes
ETHYL CORP1 citations51
US4341903AJul 27, 1982
Process for rearrangement of alkyl groups on aromatic amines
ETHYL CORP1 citations51
US4104255AAug 1, 1978
Thioether bis phenolic antioxidants
ETHYL CORP1 citations46