Patent application number | Description | Published |
20100012229 | HIGH STRENGTH AND SAGGING RESISTANT FIN MATERIAL - The present invention provides a method for producing AlMn strip or sheet for making components by brazing, as well as the products obtained by said method. In particular this method is related to fin materials used in heat exchangers. The fins can be delivered with or without a cladding depending on application. | 01-21-2010 |
20100291400 | ALUMINIUM ALLOYS BRAZING SHEET FOR THIN TUBES - An aluminium alloy brazing sheet comprising: a core material made of an aluminium alloy consisting of ≦0.1 wt % Si, most preferably ≦0.06 wt % Si, ≦0.35 wt % Mg, from 1.0 to 2.0 wt %, preferably 1.4 to 1.8 wt % Mn, from 0.2 to 1.0, preferably 0.6 to 1.0 wt % Cu, ≦0.7 wt % Fe, ≦0.3 wt % each of Zr, Ti, Ni, Hf, V, Cr, In, Sn and ≦0.5 wt % total of Zr, Ti, Ni, Hf, V, Cr, In, Sn, the remainder being Al and unavoidable impurities;
| 11-18-2010 |
20120199634 | SANDWICH MATERIAL WITH HIGH STRENGTH AT HIGH TEMPERATURE FOR THIN STRIPS IN HEAT EXCHANGERS - A method for making a sandwich material. A core layer of a first alloy is provided. The first alloy includes by wt. %: 0.5-2.0% Mn, ≦1.0% Mg, ≦0.2% Si, ≦0.3% Ti, ≦0.3% Cr, ≦0.3% Zr, ≦0.2% Cu, ≦3% Zn, ≦0.2% In, ≦0.1% Sn and ≦0.7% (Fe+Ni), the rest Al and ≦0.05% of each of unavoidable contaminants. A barrier layer of a second alloy is provided. The second alloy includes by wt. %: ≦0.2% Mn+Cr, ≦1.0% Mg, 1.6-5% Si, ≦0.3% Ti, ≦0.2% Zr, ≦0.2% Cu, ≦3% Zn, ≦0.2% In, ≦0.1% Sn and ≦1.5% (Fe+Ni), the rest Al and ≦0.05% of each of unavoidable contaminants. The core and barrier layers are rolled together so that they adhere and form a sandwich material. The sandwich material is heat treated so that the Si-content is equalized to 0.4-1% in the core and barrier layers. The sandwich material is rolled to a final thickness. | 08-09-2012 |
Patent application number | Description | Published |
20090114879 | Additive for preserving the fluidity of fluids containing gas hydrates - The present invention relates to the use of a specific group of alkoxylated and/or acylated non-quaternary nitrogen-containing compounds as anti-agglomerants for gas hydrates. The anti-agglomerants are surface-active non-quaternary nitrogen-containing compounds with 1-5 nitrogen atoms, which compounds have at least one hydrophobic group with 6-24 carbon atoms, and where the hydrophobic group is connected to the remainder of the molecule by an amine moiety, an ether moiety or an amide moiety, provided that when the hydrophobic group is connected by means of an amide moiety to the remainder of the molecule, the compounds must contain a total of at least two nitrogen atoms, and optionally contain 1-12 —CH | 05-07-2009 |
20110247699 | Use of a zwitterionic surfactant together with an anionic ether-containing surfactant as a drag-reducing agent - The present invention relates to the use of a zwitterionic surfactant in combination with an ether sulphate or ether carboxylate surfactant in a water-based system as a drag-reducing agent. The combination has besides a high drag-reducing effect also a low sensitivity to hard water. | 10-13-2011 |
20130053285 | DRAG-REDUCING AGENT FOR USE IN INJECTION WATER AT OIL RECOVERY - A drag-reducing agent in an amount of 50-400 ppm in water having an electrolyte content of 0.01-7% by weight includes two zwitterionics, each including acyl containing surfactant and an anionic surfactant, where the hydrophilic group is a sulphate, a sulphonate or an ether sulphate. The water containing the drag-reducing agent is suitable to be used in injection water at oil recovery. | 02-28-2013 |
20140256998 | ADDITIVE FOR PRESERVING THE FLUIDITY OF FLUIDS CONTAINING GAS HYDRATES - Anti-agglomerants for gas hydrates, comprising alkoxylated and/or acylated non-quaternary nitrogen-containing compounds, method for inhibiting the agglomeration of gas hydrates in a conduit, and compositions comprising the gas hydrate anti-agglomerant, a corrosion inhibitor and/or a paraffin deposition inhibitor. | 09-11-2014 |