Patents Assigned to Lucite International UK Limited
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Patent number: 6875805Abstract: An acrylic material which is flame retardant comprises 4.9 to 94.9% by wt of an acrylic composition, 5-95% by wt of a halogen-containing polymer, especially PVC, and 0.1-25% by wt of an inorganic composition comprising at least one of an oxide, hydroxide, carbonate, borate, stearate, chloride or bromide, zinc, magnesium, molybdenum, antimony, aluminum, tin, copper, manganese, cobalt or iron.Type: GrantFiled: May 29, 2003Date of Patent: April 5, 2005Assignee: Lucite International UK LimitedInventors: Paul Eustace, Neil Andrew McCathy, Nicholas John Marston
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Publication number: 20040236053Abstract: A method of preparing a (meth)acrylate functionalised polymer comprising the steps of mixing together a monofunctional vinylic monomer with from 0.3-100% w/w (based on monofunctional monomer) of a polyfunctional vinylic monomer and from 0.0001-50% w/w of a chain transfer agent, reacting said mixture to form a polymer and terminating the polymerisation reaction before 99% conversion. The resulting polymers are useful as components of surface coatings and inks, as moulding resins or in curable compounds, e.g. curable moulding resins or photoresists.Type: ApplicationFiled: March 8, 2004Publication date: November 25, 2004Applicant: LUCITE INTERNATIONAL UK LIMITEDInventors: Michael S. Chisholm, Andrew T. Slark
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Patent number: 6794439Abstract: An abrasion resistant acrylic composition comprises at least 70% w/w of the residues of at least one polmerisable acrylic monomer, 0.2-5% w/w of a finely divided compound comprising at least one oxide selected from silicon, titanium, zirconium and aluminum oxides, and 0.2-25% w/w of at least one linking compound which is miscible with said polymerisable acrylic monomer and which is capable of bonding to the surface of the oxide compound. The acrylic composition may be thermoformed while retaining its abrasion resistant surface properties.Type: GrantFiled: January 22, 2001Date of Patent: September 21, 2004Assignee: Lucite International UK LimitedInventors: Graeme Robertson, Ian Muir Fraser
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Publication number: 20040063880Abstract: Branched polymers are prepared by mixing together monofunctional vinylic monomer with from 0.3 to 100% w/w of polyfunctional vinylic monomer and from 0.0001 to 50% w/w of chain transfer agent and thereafter reacting the mixture to form a polymer. The resulting branched polymers are soluble and may be used as component of surface coatings and inks as well as molding resins.Type: ApplicationFiled: September 16, 2003Publication date: April 1, 2004Applicant: LUCITE INTERNATIONAL UK LIMITEDInventors: Michael S. Chisholm, Andrew T. Slark, David Sherrington, Nial O'Brien
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Patent number: 6713584Abstract: A method of preparing a (meth)acrylate functionalised polymer comprising the steps of mixing together a monofunctional vinylic monomer with from 0.3-100% w/w (based on monofunctional monomer) of a polyfunctional vinylic monomer and from 0.0001-50% w/w of a chain transfer agent, reacting said mixture to form a polymer and terminating the polymerisation reaction before 99% conversion. The resulting polymers are useful as components of surface coatings and inks, as moulding resins or in curable compounds, e.g. curable moulding resins or photoresists.Type: GrantFiled: November 13, 2000Date of Patent: March 30, 2004Assignee: Lucite International UK LimitedInventors: Michael Stephen Chisholm, Andrew Trevithick Slark
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Patent number: 6689840Abstract: A polymeric material containing a halogen-containing polymer such as PVC, an inorganic hydroxide and, an acrylic material is described. The presence of the inorganic hydroxide provides a material of superior weathering resistance as compared to materials comprising halogen-containing polymers which do not contain hydroxide.Type: GrantFiled: February 28, 2002Date of Patent: February 10, 2004Assignee: Lucite International UK LimitedInventors: Paul Eustace, Neil Andrew McCathy, Nicholas John Marston
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Patent number: 6689832Abstract: A process for forming an acrylic sheet material comprises preparing a mixture comprising: (I) 20-89% wt of an acrylic polymer which is a copolymer containing 50-99% wt of methyl methacrylate unites and 1-50 wt % of a copolymerizable alkyl acrylate; (ii) 10-80 wt % of a mineral filler composition selected from the group comprising alumina trihydrate, magnesium hydroxide, talc and barium sulphate; and (iii) 1-40 wt % of decorative particles; and melt-moulding the mixture at a temperature above 150° C. to form a solid article. The process enables thermoformable acrylic articles which have the natural appearance of granite to be produced.Type: GrantFiled: November 20, 2001Date of Patent: February 10, 2004Assignee: Lucite International UK LimitedInventor: Shamsedean Rostami
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Patent number: 6670501Abstract: A process for the manufacture of methyl methacrylate includes a process for separating the methyl methacrylate from certain impurities, at least one of which has a freezing point of greater than −50° C., by a fractional crystallisation process.Type: GrantFiled: April 6, 2000Date of Patent: December 30, 2003Assignee: Lucite International UK LimitedInventors: Stephen Patrick Harrison, William David Parten, Joseph Youngblood Stuart, John Stuart Martin
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Publication number: 20030212178Abstract: An acrylic material which is flame retardant comprises 4.9 to 94.9% by wt of an acrylic composition, 5-95% by wt of a halogen-containing polymer, especially PVC, and 0.1-25% by wt of an inorganic composition comprising at least one of an oxide, hydroxide, carbonate, borate, stearate, chloride or bromide, zinc, magnesium, molybdenum, antimony, aluminum, tin, copper, manganese, cobalt or iron.Type: ApplicationFiled: May 29, 2003Publication date: November 13, 2003Applicant: Lucite International UK LimitedInventors: Paul Eustace, Neil Andrew McCathy, Nicholas John Marston
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Patent number: 6646068Abstract: Branched polymers are prepared by mixing together monofunctional vinylic monomer with from 0.3 to 100% w/w of polyfunctional vinylic monomer and from 0.0001 to 50% w/w of chain transfer agent and thereafter reacting the mixture to form a polymer. The resulting branched polymers are soluble and may be used as component of surface coatings and inks as well as molding resins.Type: GrantFiled: December 8, 2000Date of Patent: November 11, 2003Assignee: Lucite International UK LimitedInventors: Michael Stephen Chisholm, Andrew Trevithick Slark, David Sherrington, Nial O'Brien
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Patent number: 6632855Abstract: A plastics material comprises an acrylic polymer containing 5-50% of a rubbery copolymer and a biocidal compound. The plastic material is useful as a component of a refrigerator, worktop etc. or as a building material. The material may be used as a coating for a substrate. Method of manufacturing laminate materials comprising the plastics material are also claimed.Type: GrantFiled: January 3, 2000Date of Patent: October 14, 2003Assignee: Lucite International UK LimitedInventors: Gordon Maxwell Beverly, Michael John Ellacott
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Patent number: 6568821Abstract: An edge-lit illumination system comprising a light transmitting sheet (10) which has a surface treatment, capable of reflecting or scattering light, on at least one of its opposing surfaces (11, 12), a light source (13) positioned in proximity to, and adjacent to, an edge of this sheet, and a reflective surface (14) positioned adjacent to an edge of the sheet, at an obtuse angle (18) to the plane of the sheet and extending away from one surface of the sheet. The reflective surface is preferably disposed adjacent to the edge of the light transmitting sheet having the light source adjacent to it. The obtuse angle preferably ranges from 100 to 145 degrees. This invention gives an increase in the area of illumination across the light transmitting sheet.Type: GrantFiled: December 21, 2000Date of Patent: May 27, 2003Assignee: Lucite International UK LimitedInventors: John Mark Page, John Henry Forster
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Patent number: 6544924Abstract: The production of ethylenically unsaturated acids or esters by the catalytic reaction of an alkanoic acid or ester, especially methyl propionate, with formaldehyde, and a catalyst therefor wherein the catalyst comprises a porous high surface area silica containing 1-10% by weight of an alkali metal, especially cesium, (expressed as metal) and having compounds of at least one modifier element selected from boron, magnesium, aluminum, zirconium and hafnium dispersed in the pores of said silica in such amount that the catalyst contains a total of 0.25 to 2 gram atoms of primary modifier element per 100 moles of silica.Type: GrantFiled: December 1, 2000Date of Patent: April 8, 2003Assignee: Lucite International UK LimitedInventors: Samuel David Jackson, David William Johnson, John David Scott, Gordon James Kelly, Brian Peter Williams
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Patent number: 6489506Abstract: A process for the liquid-phase carbonylation of ethylene, according to the equation C2H4+CO+ROH→C2H5CO2R, in the presence of a catalyst system comprising a Group VIII metal or compound thereof, a phosphine ligand and a source of anions, and in the presence of water or a source of organic hydroxyl groups, is carried out in conditions in which the molar ratio of ethylene to carbon monoxide in the gaseous phase of the reactor is greater than 1:1. The higher ratios of ethylene to carbon monoxide are beneficial in increasing the turnover number of the catalyst system.Type: GrantFiled: June 21, 2001Date of Patent: December 3, 2002Assignee: Lucite International UK LimitedInventors: Jean Margaret Pearson, Raymond Anthony Hadden
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Patent number: 6478929Abstract: A formaldehyde-containing product is separated from a formalin solution containing formaldehyde, water and methanol by distilling the solution in the presence of a water entraining compound, especially methyl propionate or methyl methacrylate. The product contains substantially less water than in the solution and may be used, for example, in a further process which requires a source of formaldehyde containing a relatively low level of water, for example, the catalyzed reaction of methyl propionate with formaldehyde and methanol to produce methyl methacrylate.Type: GrantFiled: January 22, 2001Date of Patent: November 12, 2002Assignee: Lucite International UK LimitedInventor: William David Parten
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Patent number: 6476255Abstract: A process for the manufacture of an alkyl ester of an aliphatic carboxylic acid comprises the steps of supplying a first feed stream comprising carbon monoxide and an alkene of formula CnH2n to a reactor, supplying a second feed stream comprising an alkyl alcohol, having a formula R—OH where R is an optionally substituted alkyl group, to the reactor, and reacting together said first and second feed streams in the reactor in the presence of a carbonylation catalyst, which catalyses the carbonylation reaction between carbon monoxide and the alkene, to form a product comprising an alkyl alkanoate having the formula CnH2n+1COOR, such that the ratio of alkyl alcohol to alkyl alkanoate present in the reactor is greater than the ratio of alkyl alcohol to alkyl alkanoate present in an azeotropic mixture of the alkyl alcohol and alkyl alkanoate. The process is particularly useful for the manufacture of methyl propionate by the methoxycarbonylation of ethylene.Type: GrantFiled: November 1, 2000Date of Patent: November 5, 2002Assignee: Lucite International UK LimitedInventors: Raymond A Hadden, Jean M Pearson