| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b1a8f92c331b255c0b42b829ccd90cd0 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B24-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K23-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-46
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K23-12 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B24-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K23-52
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K23-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-46 |
| filingDate |
1974-11-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1976-05-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ff92e4888496976063a698f817164a70 |
| publicationDate |
1976-05-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-3954677-A |
| titleOfInvention |
Sulfonated aromatic-formaldehyde condensation products |
| abstract |
Sulfonated aromatic-formaldehyde condensation products are prepared by reacting a sulfonated aromatic compound with formaldehyde to form a condensation product which is neutralized or rendered alkaline by the addition of an aqueous solution of sodium hydroxide and further reacted with a small amount of urea, usually around 0.5 to 1% by weight of the total mass in order to produce a product which can be employed as a dispersant for oil well cementing compositions and exhibits less retardant effect than a similar dispersant prepared without the addition of the urea. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6863837-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2006183879-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6170574-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10351521-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10351520-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4360513-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6294592-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2008011202-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5186846-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4921543-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2018057452-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4360512-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7438758-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5534166-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005171324-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10435359-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2008070814-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7449062-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2004020108-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2018057453-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2018057451-A1 |
| priorityDate |
1974-11-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |