摘要:
A suitable mordanting polymer for the image receiving layer in a color photographic material for the dye diffusion transfer process is a water-soluble cationic polymer containing glycidyl groups. Such polymers can be made by quaternizing a basic polyurethane, polyurea or polyurea polyurethane of the formula ##STR1## with a quaternizing agent capable of introducing glycidyl groups. The recurring unit contains a quaternizable tertiary amino group, and the recurring unit B is derived from a bis-chloroformate or a diisocyanate.
摘要:
Polymers, containing polymerized units of at least one compound of the formula ##STR1## and at least one compound of the formula ##STR2## are useful for the preparation of silver halide emulsions.
摘要:
A polymer of at least one compound A with at least one compound B, in which A and B correspond to the following formulae ##STR1##B: H--S.sub.n --Q.sup.1 --W).sub.m Q.sup.2 --S--H is useful in light sensitive photographic materials comprising at least one silver halide emulsion layer.
摘要:
Dyes corresponding to formula I may be released imagewise from dye releasers in the dye diffusion transfer process. The dyes obtained are lightfast cyan dyes with improved spectral properties and reduced sensitivity to reducing agents ##STR1## the meanings of symbols given in formula I (A, A', G, R.sup.1, R.sup.2, R.sup.3 and R.sup.4) are indicated in the description.
摘要:
Monoazo dyes corresponding to the following formula ##STR1## are suitable for use as light-stable cyan image dyes stable to reducing agents for the dye diffusion transfer process.In the above formula:Q represents the remainder of the molecule required to complete a fused benzene or thiophene ring, which contains additional electron acceptor groups, or to complete a fused pyridine, pyrimidine, pyridazine, pyrazine or thiazole ring;G represents --OH, acyloxy;R.sup.1 represents H or one or two identical or different radicals selected from the group consisting of halogen, acyl, acylamino and --CN;Y represents H, --OH, an amino group optionally substituted by alkyl or aryl, a cyclic amino group or a group of the formula --NH--SO.sub.2 --R.sup.2 ;R.sup.2 represents alkyl, aryl, an amino group optionally substituted twice by alkyl or a cyclic amino group;n=0, 1 or 2.
摘要翻译:对应于下式的单偶氮染料适合用作稳定染料扩散转移过程的还原剂的稳定的青色影像染料。 在上式中:Q表示完成稠合苯或噻吩环所需的分子的剩余部分,其含有额外的电子受体基团,或完成稠合的吡啶,嘧啶,哒嗪,吡嗪或噻唑环; G表示-OH,酰氧基; R1表示H或选自卤素,酰基,酰氨基和-CN的一个或两个相同或不同的基团; Y表示H,-OH,任选被烷基或芳基取代的氨基,环状氨基或式-NH-SO 2 -R 2的基团; R 2表示烷基,芳基,任选被烷基或环氨基取代的氨基; n = 0,1或2。
摘要:
Cyan partial color images with increased light fastness and improved stability to moisture and heat may be produced by the dye diffusion process using cyan dyes corresponding to formula I released from dye releasing compounds. ##STR1## In the above formula, Q denotes a group for completing a pyridine or pyridazine ring optionally carrying a condensed aromatic ring;G denotes OH or NH--SO.sub.2 --R.sup.5 ;R.sup.1 denotes H or one, two or three substituents;R.sup.2 denotes H or a group with electron acceptor character preferably situated in an ortho-position to G;R.sup.3 denotes H, acylamino or a group such as G;R.sup.4 denotes H, SO.sub.2 --NR.sup.6 --R.sup.7 or NH--SO.sub.2 --R.sup.5 ;R.sup.5 denotes alkyl, aralkyl, aryl or NR.sup.6 --R.sup.7 ;R.sup.6, R.sup.7 denote H, alkyl or aralkyl or together form a group for completing a cyclic amino group.
摘要:
A photographic material comprising a support and at least one layer which comprises at least one spectrally sensitised silver halide emulsion, characterised in that the material contains at least one compound of formula and/or wherein R1 denotes H, alkyl, aryl, aralkyl, alkenyl, heterocyclyl, R2 denotes OH, NH2, NHR7, NR8R9 or R1 together with R2, denotes the atoms necessary for the completion of a heteroaliphatic ring, R3 denotes OH, NH2, NHR7, NR8R9, R4 denotes H, alkyl, aryl, aralkyl, alkenyl, heterocyclyl, R5, R6 independently of each other, denote OH, NH2, NHR10, NR11R12, or R4 together with R5, or R4 together with R6, denote the atoms necessary for the completion of a heteroaliphatic ring, and the R5 or R6 radical, which is not part of a ring, denotes OH, NH2, NHR10 or NR11R12, R7, R10 denote alkyl, aryl, aralkyl, heterocyclyl, R8, R9 independently of each other, denote alkyl, aryl, aralkyl, heterocyclyl, or R8 together with R9, denotes the atoms necessary for the completion of a heteroaliphatic ring, and R11, R12 independently of each other, denote alkyl, aryl, aralkyl, heterocyclyl, or R11 together with R12, denote the atoms necessary for the completion of a heterocyclic ring, and wherein only one of the radicals R2 and R3 and only one of the radicals R5 and R6 can denote OH or NH2, is distinguished by increased spectral sensitivity, a high sensitivity/fogging ratio and a good shelf life under humid conditions.
摘要:
The production of tabular silver bromide-iodide emulsions and silver bromide-chloride-iodide emulsions with an aspect ratio 32, an iodide content from 1 to 40 mol % and a chloride content from 0 to 20 mol %, by the process steps of (a) silver halide nucleus precipitation, and (b) at least one further precipitation of silver halide, wherein rein at least one aromatic five- or six-membered, heterocyclic compound, which is free from—SH—,—SSO2H— and—SSO2R groups, is added in an amount from 10−9 to 10−4 mol/mol silver during nucleus precipitation or during the precipitation of an inner zone of the silver halide grain which is different from the nucleus precipitate, results in an improved speed/grain size ratio and in an increased stability of a photographic material which contains an emulsion produced in this manner.
摘要:
A color photographic material, the cyan coupler of which is of the formula ##STR1## in which R.sub.11 means an alkyl, aryl, acylamino, alkylcarbamoyl, arylcarbamoyl or a heterocyclic group,R.sub.12 means a group having electron-attracting characteristics,R.sub.13 means a group having electron-attracting characteristics,R.sub.14 means an alkyl or aryl group,R.sub.15 means a divalent linking member having 2 to 4 linking atoms,X means .dbd.O or .dbd.N--SO.sub.2 R.sub.21 andY means a group eliminable by hydrolytic or intramolecular (nucleophilic) attack,is distinguished by improved processing stability.
摘要:
The present invention relates to a new compound of formula (I) with the proviso that Y represents N, and also relates to a colour photographic silver halide material comprising at least one red-sensitive silver halide layer with which according to the invention a compound of formula (I) is associated, and also relates to a photographic colour development process in which couplers of formula (I) are reacted with colour developers of the phenylenediamine and/or diaminotoluene type to form coupling products which exhibit a strong absorption, particularly in the infrared region. The present invention further relates to the use of compounds of formula (I) as cyan and/or infrared couplers in colour photographic silver halide materials.