http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1350279-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_03d0f52bb4069f8a19d70dcfb697c67a |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C1-18 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B23-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C1-4853 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C1-18 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B23-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C1-485 |
| filingDate | 1971-10-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1974-04-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1350279-A |
| titleOfInvention | Direct-positive silver halide photographic emulsions |
| abstract | 1350279 Sensitized direct positive emulsions FUJI PHOTO FILM CO Ltd 1 Oct 1971 [1 Oct 1970] 45911/71 Heading G2C A direct positive emulsion comprises fogged silver halide grains and a sensitizing dye represented by one of the following tautomeric formulae: in which Z completes an optionally substituted benzene or napthalene ring: Z' completes an optionally substituted 5- or 6- membered heterocyclic ring to which one or more further rings may be fused: R and R' each represent an optionally substituted alkyl or aryl group, or allyl, at least one of R and R' having a carboxyl or sulpho radical substituent, R<SP>2</SP> and R<SP>3</SP> each represent alkyl, aralkyl or allyl, L<SP>1</SP> is methine or substituted methine wherein the substituent completes a carbocyclic or heterocylic ring together with R, R<SP>2</SP>, R<SP>3</SP> or L<SP>2</SP>, A is H or lower alkyl (1-5C): L<SP>2</SP> is methine or substituted methine wherein the substituent completes a carbocyclic or heterocylic ring together with R<SP>1</SP> or L<SP>1</SP> or, when Z<SP>1</SP> completes an indolenine ring substituted at the 3-position, with the 3-substituent thereof, X is an anion and n and m are each 0 or 1. The silver halide grains may be precipitated in the presence of a rhodium or inidium salt. |
| priorityDate | 1970-10-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 26.