http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-1165506-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_20168ac7f1cf5ae83ae494e9666f5ad8 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B22C1-20 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B22C1-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B22C1-20 |
| filingDate | 1981-12-07^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1984-04-17^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9704e6ec77cc50c16e34b6444284e472 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9e944ff09b576eb5822033f487bfa489 |
| publicationDate | 1984-04-17^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-1165506-A |
| titleOfInvention | Method of manufacturing a foundry mould mix containing binder components and mould binder components therefor |
| abstract | TITLE A METHOD OF MANUFACTURING A FOUNPRY MOULD MIX CONTAINING BINDER COMPONENTS AND MOULD BINDER COMPONENTS THEREFOR INVENTORS Ervin I. Szabo Laurence V. Whiting ABSTRACT OF DISCLOSURE A foundry mould binder component comprising at least one acid selected from the group consisting of glycolic acid, lactic acid, .alpha.-hydroxy butyric acid, valerolactic acid, .alpha.-hydroxy-caproic acid, tartron-ic acid, tartaric acid, malic acid, mucic acid, citric acid, gluconic acid, and glyceric acid, and a precipitant for the acid, The precipitant is for admixture with or contains the equivalent to at least 50% of the stoichiometric requirement of the total acid content of the binder com-ponent when the total acid content is in solution, said precipitant com-prising at least one substance selected from the group consisting of cal-clum carbonate and substances composed essentially of calcium carbonate, said precipitant being substantially non-fluxing with the foundry sand, and substantially nonreactive with respect to other mould components than the said acid, and substantially non-reactive with respect to metal which is to be cast in the mould. Taking one embodiment of the present inven-tion comprising an aqueous solution of 50 w/o citric acid and 3? w/o of a crushed limestone having a 96 w/o calcium carbonate content, and particles in a size range where O w/o is retained on a 140 United States Standard mesh screen and 20 w/o is retained on a 325 United States Standard mesh screen, then any other acid and precipitant mixture are selected to have a precipitation rate no faster than that said embod-iment. The precipitant is preferably ground limestone, and the binder component may further include at least one humectant (e.g. sorbitol) admixed with the remainder to retard the loss of mould tensile strength during periods of low humidity. |
| priorityDate | 1981-12-07^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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