Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Monsanto Chemicals Ltd
Monsanto Chemical Co
Original Assignee
Monsanto Chemicals Ltd
Monsanto Chemical Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Monsanto Chemicals Ltd, Monsanto Chemical CofiledCriticalMonsanto Chemicals Ltd
Priority to ES0305116ApriorityCriticalpatent/ES305116A1/en
Publication of ES305116A1publicationCriticalpatent/ES305116A1/en
Process to carry out the obtaining of molds, characterized in that these are refractory hull according to which a fusible model is applied a coating of a slurry having an acidic pH index and containing a refractory material of particulate filler very thin and a binder containing silica, the binder has a silica content expressed as SiO2 comprised between 7 and 50% by weight; the coated model is placed in a chamber to which ammonia is injected in a gaseous state to give an atmosphere containing 0.05 to 10% ammonia by volume; the coated model is retained in this atmosphere for a period comprised between 10 seconds and 5 minutes sufficient to gel the coating; the ammonia atmosphere is removed from the chamber and the coated model is removed. (Machine-translation by Google Translate, not legally binding)
ES0305116A1964-10-201964-10-20Procedure to carry out the obtaining of molds. (Machine-translation by Google Translate, not legally binding)
ExpiredES305116A1
(en)
Improvements in the introduction of masses for molds of foundry, especially for procedures of foundry, of presition (Machine-translation by Google Translate, not legally binding)