| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1ec786228aaef809765ff5fccb943f6b |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C05C9-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C05G5-27 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C05G5-27
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C05C9-02 |
| filingDate |
1983-07-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1985-07-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_99febdfbc592358b7c51153517b49f4f |
| publicationDate |
1985-07-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4530713-A |
| titleOfInvention |
Urea-formaldehyde fertilizer suspensions |
| abstract |
A process for preparing a ureaform type resin fertilizer as an aqueous suspension which is stable and preferably has an Availability Index of at least 70 which, in a preferred embodiment, comprises: adding urea to an acidic solution of formaldehyde having a pH of 0.25 to 1.75 at a rate of addition to keep the temperature below 98 DEG C. until the mole ratio of formaldehyde to urea is from 3.5:1 to 2.6:1; adjusting the pH of the reaction mixture to between about 5.2 and 6.8 and the temperature from about 75 DEG C. to 92 DEG C. and adding urea until a formaldehyde to urea mole ratio of 0.5:1 to 1.8:1 is attained and the nephelometric turbidity of the reaction mixture is in the range of 200 to 800 NTU units; and then neutralizing the reaction mixture to a basic pH not exceeding about 8.5. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11091404-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2004023809-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-3172181-A4
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6936573-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6936681-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2014262019-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7213367-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2006052733-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2019209919-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2022388920-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2003220200-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2003228981-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110342992-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112041288-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110342992-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112041288-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-03082005-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9499672-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2016014807-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6900162-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1254878-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9109123-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4954154-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2008141747-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7862642-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9217046-B1 |
| priorityDate |
1983-07-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |