PETROLIAM NASIONAL BERHAD Patent applications |
Patent application number | Title | Published |
20160038887 | POLYSULFONE MEMBRANE HAVING HIGH SELECTIVITY - A spin dope composition produces a polymeric fiber useful in non-cryogenic gas separation. The composition includes polysulfone as the polymeric component, two solvents, in which the polymer is soluble, and a non-solvent, in which the polymer is insoluble. The solvents preferably include N-methyl-pyrrolidone (NMP) and N,N-dimethyl acetamide (DMAC), and the non-solvent preferably includes triethylene glycol (TEG). Fibers made from the present composition have been found to exhibit superior properties of gas flux and selectivity, as compared with fibers made from spin dopes having only one solvent component. | 02-11-2016 |
20150080599 | METHOD FOR THE PRODUCTION OF ESTERS AND USES THEREOF - Alkyl esters (butyl, hexyl, or other) of full composition palm fatty acids, palm fatty acid distillates (PFAD), and palm kernel fatty acid distillates (PKFAD) can be used to generate polyurethane and lubricant products. The alkyl esters of the present invention can be produced via ozonolysis. The improved method for producing alkyl esters includes reacting at least one substance having at least one carbon-to-carbon double bond with ozone in the presence of least one monoalcohol that azeotropes with water. In particular, the method may comprise reacting with at least one first mole of ozone and at least one second mole of ozone, and further comprises refluxing before addition of the second mole of ozone. | 03-19-2015 |
20130071309 | SEPARATION OF GASES - Aspects of the disclosure relate to the separation of gases and to a process for the removal of carbon dioxide gas using liquid absorbents. | 03-21-2013 |
20130044211 | SYSTEM FOR MEASURING A MULTIPHASE FLOW - System for measuring a multiphase flow ( | 02-21-2013 |
20120303281 | ENHANCED DYNAMIC WELL MODEL FOR RESERVOIR PRESSURE DETERMINATION - A computer implemented method for determining reservoir pressure in a shut-in well, the method comprising: determining the initial physical characteristics of the well; determining properties of gas bubble throughout the well; calculating a dynamic mass transfer rate for the gas bubble over a period of time; calculating the physical fluid movement along the well: calculating a rate of fluid influx from the reservoir; determining a corrected pressure gradient along at least part, or all, of the profile of the well using the determined dynamic mass transfer rate, fluid movement and rate of fluid influx; and determining the reservoir pressure from a measure, or determination, of the well head pressure and the calculated pressure. | 11-29-2012 |
20120108822 | Process For The Preparation Of Chalcogene Compounds - The present invention is a novel process for the preparation of chalcogenone compounds by conversion of ionic liquids and salts comprising nitrogen-containing heterocyclic cations and basic anions to the corresponding nitrogen-containing heterocyclic chalcogenones by reaction with elemental chalcogens. | 05-03-2012 |
20100276821 | VAPOR DISTRIBUTOR FOR GAS-LIQUID CONTACTING COLUMNS - A vapor distributor for use in atmospheric or vacuum columns includes a new design of vapor inlet device, or vapor horn, to provide superior mixing and distribution of a tangential first feed and a vertical second feed. New vapor inlet device has an inlet dividing the first feed into two portions, each flowing in respective housings in opposed circulation directions, and a plurality of vanes for redirection of vapor. Mixing and distribution of feeds by the vapor distributor is further enhanced by inclusion in vapor distributor of a mixer and vapor directing plates. | 11-04-2010 |