Patents Assigned to Silica Limited
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Patent number: 9541426Abstract: An interferometer apparatus for an optical fiber system and method of use is described. The interferometer comprises an optical coupler and optical fibers which define first and second optical paths. Light propagating in the first and second optical paths is reflected back to the optical coupler to generate an interference signal. First, second and third interference signal components are directed towards respective first, second and third photodetectors. The third photodetector is connected to the coupler via a non-reciprocal optical device and is configured to measure the intensity of the third interference signal component directed back towards the input fiber. Methods of use in applications to monitoring acoustic perturbations and a calibration method are described.Type: GrantFiled: March 19, 2015Date of Patent: January 10, 2017Assignee: Silica LimitedInventors: Mahmoud Farhadiroushan, Tom Richard Parker, Sergey Shatalin
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Publication number: 20100021601Abstract: A process for stabilising a beverage against haze formation comprising treating the beverage with a stabilising agent comprising a particulate silica having a mean pore diameter of at least 6 nm and which has been modified by interaction with a water-soluble polymer having pendant pyrrolidone groups, the polymer being present on the silica in an amount from 5 to 35 percent by weight with respect to anhydrous weight of silica.Type: ApplicationFiled: October 5, 2009Publication date: January 28, 2010Applicant: PQ Silicas LimitedInventors: Graham J. Earl, Ian P. McKeown
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Publication number: 20090010973Abstract: An amorphous precipitated silica with controlled abrasivity and effective cleaning properties for use in an oral composition produced through comminution and classification of the silica to form particles with an oil absorption value of 150 cm 3/100 g or less, a weight median particle diameter dso of less than 3 ?m and a dgo value, wherein 90% by weight of the particles have a diameter less than the dgo value, of 6 ?m or less.Type: ApplicationFiled: December 12, 2006Publication date: January 8, 2009Applicant: INEOS SILICAS LIMITEDInventor: Peter William Stanier
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Publication number: 20090000518Abstract: An aqueous gel-forming composition, e.g. a fire retardant coating composition, comprises an aluminosilicate and an organic liquid having a boiling point greater than 110° C., e.g. silicone oil, which enhances the integrity of films formed by application of the composition as a coating to a surface then followed by drying.Type: ApplicationFiled: July 24, 2006Publication date: January 1, 2009Applicant: INEOS SILICAS LIMITEDInventors: Abraham Araya, Eric Petrus Smeets, Jan Noordegraaf, Petrus Frederikus Maria Rensen, Christianus Marcus Buijk, Wilhelmus Petrus Theodorus Kemperman, Henricus Johanna De Swart
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Publication number: 20080006377Abstract: An aqueous slurry comprises (a) a crystalline aluminosilicate represented by the empirical formula M2/nO.Al2O3.xSiO2.yH2O wherein M represents a first metal moiety, said first metal having a valency of n, x is the molar ratio of silica to alumina and y indicates the molar ratio of water to alumina, (b) a mineral or organic acid, and (c) particulate silica. The silica may have a BET surface area greater than 500 m2/g and a pore volume, as measured by nitrogen manometry of less than 2.1 cm3/g. The slurry is stable on storage but has a low viscosity at low shear rate.Type: ApplicationFiled: May 6, 2005Publication date: January 10, 2008Applicant: INEOS SILICAS LIMITEDInventors: Simon Stebbing, Stephen Ellison, Alexis Toft
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Publication number: 20070292458Abstract: A dentifrice composition comprises a crystalline aluminosilicate as a cleaning agent having an average crystallite size below 0.2 ?m. The aluminosilicate may be a P zeolite having a crystallite size below 0.1 ?m and agglomerate sizes below 2.5 ?m, even when dried to a moisture content below 20% by weight. A different crystalline aluminosilicate may also be present as a cleaning booster.Type: ApplicationFiled: January 5, 2005Publication date: December 20, 2007Applicant: Ineos Silicas LimitedInventors: Peter Stanier, Abraham Araya, Iam McKeown
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Publication number: 20060052274Abstract: An aqueous slurry according to the invention comprises (a) a crystalline aluminosilicate represented by the empirical formula M2/nO Al2O3.xSiO2.yH2O wherein M represents a first metal moiety, said first metal having a valency of n, x indicates the ratio of atoms of silicon to atoms of aluminium and y indicates the ratio of molecules of water to atoms of aluminium, (b) a salt of a second metal selected from the group consisting of Group III metals, metallic elements of Group IV, magnesium, titanium, chromium, iron, nickel, copper, zinc, zirconium and silver, said salt of a second metal being present in an amount which is sufficient to replace from about 2.0 to about 40 per cent by weight of the first metal moiety, and (c) particulate silica having a BET surface area greater than 500 m2/g and a pore volume, as measured by nitrogen manometry of less than 2.1 cm3/g. The slurry is stable on storage but has a low viscosity at low shear rate.Type: ApplicationFiled: October 22, 2003Publication date: March 9, 2006Applicant: Ineos Silicas LimitedInventors: Simon Stebbing, Alexis Toft, Stephen Ellison
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Publication number: 20050245388Abstract: A method of using a zeolite composition comprises forming a mixture of (a) a crystalline aluminosilicate and (b) a salt of a second metal selected from the group consisting of Group III metals, metallic elements of Group IV, magnesium, titanium, chromium, iron, nickel, copper, zinc, zirconium and silver, said salt of a second metal being present in an amount which is sufficient to replace from about 2.0 to about 40 percent of a first metal moiety, and using said mixture in an aqueous composition at a pH in the range 4 to 10. A further aspect of the invention is a powder comprising a mixture of (a) a crystalline aluminosilicate and (b) a salt of a second metal selected from the group consisting of Group III metals, metallic elements of Group IV, magnesium, titanium, chromium, iron, nickel, copper, zinc, zirconium and silver, said salt of a second metal being present in an amount which is sufficient to replace from about 2.0 to about 40 per cent of a first metal moiety.Type: ApplicationFiled: July 11, 2005Publication date: November 3, 2005Applicant: Ineos Silicas LimitedInventor: Abraham Araya
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Patent number: 6926912Abstract: A non-aluminum containing mixed metal compound for pharmaceutical use, which may, for example, be a mixed metal hydroxy carbonate containing magnesium and iron, and may have a hydrotalcite structure, preferably a non-aged hydrotalcite structure. Other metals, including, for example, calcium, lanthanum and cerium, may also be used. Metal sulphate compounds, especially calcium sulphate, lanthanum sulphate and/or cerium sulphate, compounds are also useful. The mixed metal compounds have a phosphate binding capacity of at least 30%, by weight, based on the test methods 1, 2 or 3, described in the specification, over a pH range from 3 to 7, such as from 2 to 8. The compound is especially useful in the treatment of hyperphosphataemia.Type: GrantFiled: September 18, 1998Date of Patent: August 9, 2005Assignee: Ineos Silicas LimitedInventors: Norman B Roberts, Maurice Webb, Benjamin J Rankin
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Patent number: 6927063Abstract: Silica-based carrier impregnated with iron(III) or iron(II) salts functions as a humidity indicator giving a yellow/amber to nearly colourless colour change as the carrier humidifies.Type: GrantFiled: May 10, 2004Date of Patent: August 9, 2005Assignee: Ineos Silicas LimitedInventors: Stephen Moreton, Graham J. Earl
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Publication number: 20050129628Abstract: An amorphous silica suitable for use in a dental composition has a weight mean particle size in the range 3 to 15 ?m with at least 90 per cent by weight of particles having a size below 20 ?m, a Radioactive Dentine Abrasion (RDA) determined on an aqueous slurry of the silica powder of 100 to 220, a Pellicle Cleaning Ratio (PCR), when incorporated in a dental composition at 10 per cent by weight, greater than 85, the ratio of PCR to RDA being in the range 0.4:1 to less than 1:1 and having a Plastics Abrasion Value (PAV) in the range 11 to 19. A silica having the above properties is prepared by a precipitation route. The silica made available by the invention is also useful as an anti-blocking agent in plastics.Type: ApplicationFiled: November 29, 2002Publication date: June 16, 2005Applicant: Ineos Silicas Limited Bank QuayInventors: Peter Stanier, Simon Stebbing
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Patent number: 6905698Abstract: A particulate carrier material is impregnated with a biocidal formulation and serves as a vehicle for introduction of the biocide into a liquid-based media, such as a surface coating or surface cleaning compositions, in order to allow controlled release of the biocide to combat bacterial, fungal, algal or like growth for an extend period of time.Type: GrantFiled: August 24, 1999Date of Patent: June 14, 2005Assignee: Ineos Silicas LimitedInventors: Derek Aldcroft, Helen Jones, Dafydd Turner, Michel Edge, Julie Robinson, Kenneth Seal
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Publication number: 20040209372Abstract: Silica-based carrier impregnated with iron(III) or iron(II) salts functions as a humidity indicator giving a yellow/amber to nearly colourless colour change as the carrier humidifies.Type: ApplicationFiled: May 10, 2004Publication date: October 21, 2004Applicant: Ineos Silicas LimitedInventors: Stephen Moreton, Graham James Earl
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Patent number: 6753184Abstract: Silica-based carrier impregnated with iron(III) or iron(II) salts functions as a humidity indicator giving a yellow/amber to nearly colourless colour change as the carrier humidifies.Type: GrantFiled: October 22, 2001Date of Patent: June 22, 2004Assignee: Ineos Silicas LimitedInventors: Stephen Moreton, Graham J Earl