http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1113293-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_70ec63d39d6704bacc5c7068c93ded43 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N25-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N21-21 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N33-2811 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-21 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N25-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N33-28 |
| filingDate | 1965-09-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1968-05-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1113293-A |
| titleOfInvention | Method and apparatus for testing a liquid having a cloud point due to the appearance in the liquid or crystals having an anisotropic nature |
| abstract | 1, 113, 293. Determining cloud point of oils. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. Sept. 27, 1965 [Sept. 28, 1964], No.41086/65. Headings G1A and G1D. In an arrangement for testing a liquid having a cloud point i. e. a point when, during cooling of the liquid, crystals of anisotropic structure appear, a cooling sample is illuminated with polarized light, the temperature is measured, and it is observed, preferably by photo-electric means, whether or not the sample has caused depolarization, the polarized light being obstructed by for example a cross-polarized plate when the liquid does not contain crystals and the presence of crystals resulting in an increase of observed light. Light from a lamp 2 Fig. 1 passing through a slit 3 is plane polarized by a material 4 before being applied to the sample and an analyzing filter 5 plane polarized at right angles to polarizer 4 obstructs the passage of polarized light to detector 6. A test cell may comprise a pair of plates of transparent medium between which the liquid is made to flow, the plates having channels through which coolant such as alcohol or propane may be passed and being coated on their non light transmitting surfaces by an opaque material. The lightbeam may include a red filter whereby visible components of the polarizing filter are suppressed. Flow of the sample liquid through the cell may be controlled by the detector output, the arrival at cloud point operating a relay to flush out the cell. The detector output may be used to control a refrigerator in order to hold a continuously flowing sample at cloud point. In a further system the detector of a reference cell which may contain the cooled sampled rewarmed, may be arranged in a bridge with the test cell detector to control Peltier elements in the refrigerator. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0102106-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4886354-A |
| priorityDate | 1964-09-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 27.