摘要:
Water-soluble adducts of tertiary amines with heteroaromatic bis- or polyvinyl sulfone compounds are suitable for hardening layers containing proteins as binder.
摘要:
Heteroaromatic vinylsulphone compounds having at least two vinylsulphonyl groups each attached to a carbon atom of a heteroasomatic ring are suitable for hardening proteinic binder layers such as photographic layers containing gelatine as binder.
摘要:
Improved photographic recording materials containing an antifoggant corresponding to the formula I ##STR1## wherein the substituents have the meanings indicated in the description.
摘要:
Sensitization of silver halide emulsions by merocyanines and cationic cyanines and the stability of this sensitization is improved by addition of heterocyclically substituted thioureas of the formula ##EQU1## wherein R.sup.1 is alkyl, alkenyl or arylR.sup.2 is alkyl, cycloalkyl or aryln is 0 or 1, andZ completes a 5- or 6-membered heterocyclic group, preferably one which also contains a sulfur atom.
摘要翻译:通过加入式Z R1-N-(CH = CH-)nC = N-CS-NH-R2的杂环取代的硫脲来改善通过部花青和阳离子花青的卤化银乳剂的敏化和这种增感的稳定性,其中R1是 烷基,链烯基或芳基R2是烷基,环烷基或芳基N IS 0 OR 1,Z完成5-或6-元杂环基,优选含有硫原子的杂环基。
摘要:
Compounds corresponding to the formula: ##STR1## wherein R.sub.1 and R.sub.2 denote alkyl groups with 1 to 8 carbon atoms, an optionally substituted alkenyl group with 2 to 5 carbon atoms, an optionally substituted cycloalkyl group with 5 or 6 carbon atoms or an optionally substituted aryl group or R.sub.1 and R.sub.2 together represent the ring members required to form a 5- or 6-membered cycloalkyl or cycloalkenyl group, are suitable for use as antifoggants in photographic recording materials.
摘要:
Non-aqueous inks having an electric conductivity of at least 10.sup.-4 Ohm.sup.-1 cm.sup.-1, a viscosity of at most 5 cP at 20.degree. C. and in which the liquid medium consists completely or predominantly of one or more solvents having each an evaporation index of less than 11 are most useful for the ink-jet recording process in which a jet of ink is ejected from a nozzle by application of pressure and after its breaking up into droplets is modulated according to the information to be recorded. Such inks are particularly useful for writing on non-absorbent surfaces.