http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-749082-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d8d640c977dee9ec1b4cf792d12d5223 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-203 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-20 |
| filingDate | 1953-07-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_17fcd6c8e7b8b0c0bf21cfd41af0e056 |
| publicationDate | 1956-05-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-749082-A |
| titleOfInvention | Improvements in or relating to well drilling composition and method of manufacture thereof |
| abstract | 749,082. Well-drilling fluids COLUMBIA-SOUTHERN CHEMICAL CORPORATION. July 17, 1953, No. 19866/53. Addition to 747,192. Class 85 The method of preparing a composition for admixture with well-drilling mud described in the parent Specification is modified in that a tannin-containing bark such as mangrove bark or wattle bark is used in the place of a tannin. The bark is shredded and fed into aqueous alkali metal hydroxide solution, preferably sodium hydroxide solution, the alkali being in excess of that required to produce a neutral product and the mixture is boiled and dried. Insoluble or soluble adsorbents may, particularly when the alkali content is high, be added to the mix as in the parent process. When the woody, fibrous content of the bark used is high, however, the contents of adsorbents may be reduced or they may be eliminated. |
| priorityDate | 1953-07-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 17.