http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2002072018-A1
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C2200-43 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C5-305 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C7-413 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C5-305 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C7-413 |
| filingDate | 2001-10-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f63368015a8c1e6b4bbe5d7d21ba77f7 |
| publicationDate | 2002-06-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-2002072018-A1 |
| titleOfInvention | Aqueous metal salts of p-phenylenediamine free base color developer and method of making same |
| abstract | A stabilized solution of an alkali metal or alkaline earth metal salt of N-ethyl-N-2-(methanesulfonylaminoethyl)-2-methyl-p-phenylenediamine includes from about 10 to 40 weight percent of an alkali metal or alkaline earth metal salt of N-ethyl-N-2-(methane sulfonylaminoethyl)-2-methyl-p-phenylene-diamine; from about 30 to 70 weight percent of at least one photographically inactive water-miscible or water-soluble hydroxy-containing, organic solvent of the alkali metal or alkaline earth metal salt of N-ethyl-N-2-(methane sulfonylaminoethyl)-2-methyl-p-phenylene-diamine; from about 5 to 40 weight percent water; and from about 1 to 40 weight percent of a preservative for the alkali metal or alkaline earth metal salt of N-ethyl-N-2-(methane sulfonylaminoethyl)-2-methyl-p-phenylene-diamine, wherein the weight percentages are based on the total weight of the stabilized solution. Another aspect of the invention are processes for making stabilized p-phenylenediamine color developer solutions. n Another embodiment is a stabilized aqueous solution of an alkali metal or alkaline earth metal salt of N-ethyl-N-2-(methanesulfonylaminoethyl)-2-methyl-p-phenylene-diamine having from about 10 to 40 weight percent of an alkali metal or alkaline earth metal salt of N-ethyl-N-2-(methane sulfonylaminoethyl)-2-methyl-p-phenylene-diamine; from about 20 to 88 weight percent water; and from about 1 to 40 weight percent of a preservative for the alkali metal or alkaline earth metal salt of N-ethyl-N-2-(methane sulfonylaminoethyl)-2-methyl-p-phenylene-diamine, wherein the weight percentages are based on the total weight of the composition. Another aspect of the invention are processes for making stabilized p-phenylenediamine color developer solutions. |
| priorityDate | 2000-10-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 55.