http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-836856-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e2ea8919ae1840f418f59f60e2531123 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2223-121 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2223-045 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2207-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2219-089 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2219-088 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10N2010-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10N2040-252 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2219-087 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2207-282 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2211-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10N2040-253 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2219-046 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2211-044 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M159-24 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C10M159-24 |
| filingDate | 1958-05-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_64e9050941c72638cdfbac74899f46b5 |
| publicationDate | 1960-06-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-836856-A |
| titleOfInvention | Process for the dispersing calcium carbonate in a non-volatile carrier |
| abstract | A stable dispersion of calcium carbonate in a non-volatile carrier is formed by (1) mixing under atmospheric conditions of temperature and pressure and in the absence of any added water, (a) an oil-soluble sulphonic acid or sulphonate, (b) a volatile solvent for the sulphonic acid or sulphonate, (c) a non-volatile carrier for the sulphonic acid or sulphonate and (d) an aliphatic alcohol solution of a basic reaction product of hydrogen sulphide with calcium hydroxide, a hydrate thereof or calcium oxide, the amount of this reaction product being 1.5-4 times that required to react with the sulphonic acid when the latter is employed, or 0.5-3 times the number of chemical equivalents when a sulphonate is used, (2) passing carbon dioxide through the mixture to convert any excess of the above-mentioned basic reaction product into calcium carbonate in the form of a dispersion whose particles have a diameter less than 0.25 microns and then (3) removing the residual solvents. The sulphonates mentioned include alkyl, cycloalkyl or alkaryl sulphonates, petroleum sulphonates and substituted sulphonates such as diphenyl ether sulphonates, naphthalene disulphide sulphonates, diphenylamine sulphonates, dicetyl thianthrene sulphonates, dilauryl beta-naphthol sulphonates, dicapryl nitronaphthalene sulphonates, mono- and polychloro-substituted paraffin wax sulphonates and nitroso paraffin wax sulphonates. Metal, ammonium and amine sulphonates are mentioned. The volatile solvent (b) may be a low molecular weight alcohol (e.g. methanol), an aromatic hydrocarbon (e.g. benzene), an aliphatic hydrocarbon (e.g. hexane) or a petroleum distillate such as naphtha. The non-volatile carrier (c) may be a mineral oil or high-boiling petroleum distillate, or a synthetic lubricant such as an aliphatic diester (e.g. di-2-ethyl hexyl azelate), a silicate ester or a polyglycol or ether thereof. When the final dispersion is to be used as a lubricating composition, additional ingredients may be incorporated, such as zinc dithiophosphates, calcium/barium phenolate sulphides, methyl dichlorostearate, antifoaming agents, pour-point depressants and viscosity index improvers. According to the examples, the aliphatic alcohol of (d) may be methanol ethanol, n- or iso-butanol or n-hexanol, while the carrier (c) may be mineral oil, hexa-(2-ethyl butoxy) disiloxane or di-2-ethyl hexyl azelate. The sulphonic acid (a) may be derived from mixed alkyl benzenes or from dinonyl naphthalene, or alternatively the barium salt or the ethylene diamine salt of dinonyl naphthalene sulphonic acid may be employed. Specification 789,720 is referred to. |
| priorityDate | 1958-05-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 78.