http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-553064-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5d9f3ca41550d315642580237250c5b0 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C7-4136 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C7-413 |
| filingDate | 1941-09-25^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1943-05-06^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-553064-A |
| titleOfInvention | Improvements in photographic developers |
| abstract | 553,064. Phenylenediamine derivatives ; aminophenols. KODAK, Ltd. (Eastman Kodak Co.). Sept. 25, 1941, No. 12461. [Class 2 (iii)] [Also in Group XX] Compounds of the formula : where R 1 , R 2 and R 3 are each a substituted or unsubstituted hydrocarbon group or a heterocyclic group, and X is a group conferring increased water-solubility are used in photography R, and R 2 may each be an alkyl or cycloaliphatic group or an alkyl group containing a heterocyclic or aryl substituent. R 3 may be a group of the type (CH 2 )n, where n is 1, 2, 3 or more and one or more of the hydrogen atoms may be replaced by hydroxyl or other substituent. X may be a hydroxy, hydroxyalkoxy, carboxyl, sulphonic acid, amino; or acid amide group. The benzene ring may be further substituted by a halogen atom or an amino, azo, alkyl, or aryl group. 3 - (# - hydroxyethoxy) - 4 - aminodiethylaniline, specified in examples is prepared by condensing m - diethylaminophenol with # - chloroethanol, treating the product with nitrous acid, and reducing. The following compounds are similarly prepared 3 - (# - hydroxyethoxy) - 4 - amino - N - methyl: N - tetrahydrofurfurylaniline, 3 - (y - hydroxy - n - propoxy) - 4 - aminodiethylaniline, 3 - (# - hydroxyethoxyethoxy) - 4 - aminodimethylaniline, glycerol - α - (2 - amino - 5 - N - propyl - N - benzylaminophenyl) - ether, 1 : 3 - di - (2 - amino - 5 - diethyl aminophenoxy) - propanol - 2, 2 - amino - 5 - piperidylphenoxyacetamide, 2 - amino - 5 - diethylamino - phenoxy N - (o - carboxyphenyl)- acetamide, and # - (2 - amino - 5 - N - ethyl N - benzylaminophenox) - ethylsulphonic acid. The substituted m - aminophenols are prepared by condensing resorcinol with the corresponding secondary amine (obtained from ammonia and the halides of the substituent radicals). Aminophenols so obtained are m - (N - methyl : N - tetrahydrofurfuryl) - aminophenol, m - (N - propyl: N - benzyl) aminophenol. m-Piperidylphenol is similarly prepared. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2570116-A |
| priorityDate | 1941-09-25^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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