Abstract:
A photographic element having on a support at least one silver halide emulsion layer having associated therewith a development inhibitor precursor represented by the formula (I) ##STR1## wherein A is a phenyl group, a substituted phenyl group or a 5- or 6-membered nitrogen-containing heterocyclic ring; said A splitting together with the sulfur atom in the above molecule from the residue of the molecule to provide a silver halide development inhibitor; R.sup.1 is an alkyl group having 1 to 4 carbon atoms; and R.sup.2 is a cyano group, a carbamoyl group or the group represented by the formula ##STR2## wherein R.sup.3 is an aryl group.
Abstract:
Novel biocidal compounds have the general structural formula ##STR1## wherein n is 0, 1, or 2 and R is alkyl, alkylcarbalkoxy, cyclohexyl, halophenyl, benzyl, N,N-di-lower alkyl carbamoyl, hexamethyleneimino carbonyl, pyrimidyl, lower alkyl substituted pyrimidyl, benzimidazole, lower alkyl substituted imidazole, benzothiazole and O,O-di-lower alkyl thiophosphoryl; with the proviso that when n is 0, R is other than alkyl or cyclohexyl.
Abstract:
Compounds of the formula ##STR1## in which R is lower alkyl; R.sub.1 is lower alkyl or lower alkoxy; X is thio or sulfonyl; R.sub.2 is alkyl, benzothiazol-2-yl, benzyl, naphthyl, benzimidazol-2-yl, thiazol-2-yl, phenyl or substituted phenyl wherein said substituents are chloro, bromo, methyl or methoxy and the use of these compounds as insecticides.
Abstract:
Fluorinated-alkyl sulfides represented by [R.sub.f (CH.sub.2).sub.n S].sub.z Q where R.sub.f is fluoroalkyl, n is 2 or 3, z is 1 or 2, and Q is an aryl, alkylaryl, alkyl heterocyclic or heterocyclic radical, are useful as surfactants or as intermediates for the preparation of salt-type, quaternary-salt, or amphoteric surfactants.
Abstract:
A PHOTOGRAPHIC SILVER HALIDE EMULSION IS DESCRIBED WHICH COMPRISES A COMPOUND OF THE FORMULA:
1,2-DI(RO-),(R2-S-),R1-BENZENE
WHEREIN: R IS HYDROGEN, ACYL, HALOACYL OR ACYL CARRYING A QUARTERNARY AMMONIUM GROUP, R1 IS HYDROGEN, ALKYL, ARYL, HALOGEN OR ALKOXY, AND R2 IS AN ALIPHATIC, AROMATIC OR HETERCYCLIC GROUP. THE COMPOUNDS ARE ESPECIALLY USEFUL IN LIPPMANNEMULSIONS TO REDUCE DISTORTIONS OF IMAGE DETAILS, TO ENHANCE IMAGE SHARPNESS AND TO REDUCE YELLOW STAINING UPON REVERSAL DEVELOPMENT.
Abstract:
A PROCESS FOR OXIDIZING 2-MERCAPTOBENZOTHIAZOLE BY HEATING AN ORGANIC SOLUTION THEREOF, CONTAINING LESS THAN 15% WATER IN THE PRESENCE OF A FREE-OXYGEN CONTAINING GAS AND A CATALYTIC AMOUNT OF A COBALT PHTHALOCYANINE SULFONATE AT A TEMPERATURE BETWEEN 25* C. AND 200 C. THE PRODUCT 2.2''-DITHIOBISBENZOTHIAZOLE IS PRODUCED IN SIGNIFICANT AMOUNTS BY CONDUCTING THE REACTION AT A TEMPERATURE OF FROM ABOUT 50* C. TO 80* C., WHILE THE PRODUCT 2.2''-THIOBISBENZOTHIAZOLE IS PRODUCED IN SIGNIFICANT AMOUNTS WHEN THE REACTION TEMPERATURE IS FROM ABOUT 130* C. TO 180* C.