| Patent Number |
Title Of Patent |
Date Issued |
| RE31395 |
Aluminum polishing compositions |
September 27, 1983 |
| Aluminium polishing solutions containing phosphoric, nitric and sulphuric acids provide etched finishes if the proportion of sulphuric acid is increased. The invention inhibits such etching by addition to the bath of an aromatic ring compound, in which at least 2 hetero atoms are conjuga |
| RE29749 |
Trivalent chromium electroplating baths and electroplating therefrom |
August 29, 1978 |
| It is known to attempt to plate chromium from a solution containing trivalent chromium salts and organic complexants. The invention provides an aqueous chromium electroplating system containing trivalent chromium, together with both a formate or acetate and a bromide. Optionally the |
| 5183649 |
Production of phosphorus compounds |
February 2, 1993 |
| Chlorophosphorus compounds are produced in a loop apparatus wherein chlorine is added to a recycling medium comprising chlorophosphorus compound and elemental phosphorus. |
| 4692271 |
Concentrated aqueous surfactant compositions |
September 8, 1987 |
| Surfactant mixtures are prepared in a fluid "G" phase of more than 50% concentration, the mixtures comprise different surfactant products selected respectively from at least two of the following classes, that is to say alkyl sulphates, alkyl ether sulphates, olefin sulphonates, alkyl |
| 4311855 |
Flameproofing agents |
January 19, 1982 |
| An improved process for manufacturing tetrakis (hydroxymethyl) phosphonium amide condensation product without the formation of a precipitate. Urea or thiourea is added to the tetrakis (hydroxymethyl) phosphonium salt having an anion formed from a dibasic or tribasic or polybasic acid. Th |
| 4302479 |
Preparation of iso-alpha-acid-containing hop extracts |
November 24, 1981 |
| When preparing hop extract containing iso-alpha-acids, improved yield of iso-alpha-acids is obtained by contacting a solution of extracted alpha-acids in a water-immiscible non-polar liquid with a sufficiently strong aqueous solution of acid to provide a pH of less than 1 in an aqueo |
| 4251384 |
Aluminum polishing compositions |
February 17, 1981 |
| Aluminium polishing solutions containing phosphoric, nitric and sulphuric acids provide etched finishes if the proportion of sulphuric acid is increased. The invention inhibits such etching by addition to the bath of an aromatic ring compound in which at least 2 hetero atoms are conjugat |
| 4243549 |
Concentrated aqueous surfactant compositions |
January 6, 1981 |
| Mixtures of amphoteric and anionic surfactants are obtained as concentrated aqueous systems in the G phase. |
| 4239640 |
Manufacture of detergents |
December 16, 1980 |
| In the manufacture of detergent powders containing alkoxylated alcohols, the problem arises that the alcohols cannot be spray-dried with the rest of the constituents. The invention provides a method of incorporating the alcohols into the spray-dried powder in such a way that staining of |
| 4191704 |
Highly concentrated alkyl sulphate solutions pourable at ambient |
March 4, 1980 |
| Alkyl sulphates are prepared in a high concentration by mixing together an alkyl sulphuric acid and ammonium or an amine in the presence of sufficient water to maintain the product in the G phase above the minimum concentration at which gel formation is encountered. |
| 4127640 |
Purification of phosphoric acid by solvent extraction using hexanones |
November 28, 1978 |
| Wet process phosphoric acid may be purified by solvent extraction to produce a product of greater purity and concentration than has hitherto been attainable by employing an acyclic hexanone, preferably methyl isobutyl ketone as the solvent. Preferably the extraction of the acid into |
| 4116699 |
Aluminium polishing compositions |
September 26, 1978 |
| Aluminium polishing solutions containing phosphoric, nitric and sulphuric acids provide etched finishes if the proportion of sulphuric acid is increased. The invention inhibits such etching by addition to the bath of an aromatic ring compound, in which at least 2 hetero atoms are conjuga |
| 4113758 |
Process for preparing organotin halides |
September 12, 1978 |
| Tricycloalkyltin halides, e.g. tricyclohexyltin chloride, which is an intermediate for making the biocide tricyclohexyl tin hydroxide, are made by adding a solution of the cyclo alkyl magnesium halide in an ether to a solution of stannic halide in a liquid diluent, the weight percentage |
| 4112118 |
Process for preparing phosphate salts |
September 5, 1978 |
| Phosphate values can be recovered from an organic extract which is formed by contact of wet process phosphoric acid and a water immiscible solvent, in a process in which the extract is treated with an inorganic base or a dihydrogen phosphate salt to give an acid free solvent and an aqueo |
| 4108822 |
Curable resin compositions |
August 22, 1978 |
| Aralkylene-phenol resins may be cured by reaction with 5 - 90% of condensates of formaldehyde and a nitrogen containing compound, e.g. melamine to give cured products having high temperature strength and/or a high comparative tracking index. |
| 4078101 |
Flameproofing of textiles |
March 7, 1978 |
| A process for flameproofing cellulosic textile fibres which comprises impregnating the fabric with an aqueous solution containing a pre-condensate of urea and a THP salt together with any excess of the THP salt necessary to make up a ratio of urea to THP lying between 0.05:1 and 0.25 |
| 4054494 |
Compositions for use in chromium plating |
October 18, 1977 |
| It is known to attempt to plate chromium from a solution containing trivalent chromium salts and organic complexants. The invention provides an aqueous chromium electroplating system containing trivalent chromium together with both a formate or acetate and a bromide. Optionally the s |
