Patent application number | Description | Published |
20080234453 | Method of Preparing Ethylene Polymers by Controlled High Pressure Polymerization - The present invention relates to a method for the radical polymerization or copolymerization of ethylene at high pressures using a hydroxylamine ester as radical initiator. The hydroxylamine esters according to the invention are suitable initiators for the high pressure polymerization of ethylene leading to high molecular weight polyethylenes with narrow molecular weight distributions (Polydispersed Index PD=1.2−4.5). | 09-25-2008 |
20090105425 | Azo Compounds for Polypropylene Degradation - The invention relates to a process and compositions suitable for reducing by heat the molecular weight of polypropylene, propylene copolymers or polypropylene blends. Azo compounds bearing different substituents are added to the polymers. | 04-23-2009 |
20090258998 | COMPOSITION AND PROCESS FOR THE CONTROLLED SYNTHESIS OF BLOCK COPOLYMERS - The present invention relates to a polymerizable composition comprising a) at least one ethylenically unsaturated monomer and b) at least one hydroxylamine of high molecular weight, preferably a long chain alkyl substituted hydroxylamine. Further aspects of the present invention are a process for polymerizing ethylenically unsaturated monomers, and the use of high molecular weight hydroxylamines for controlled polymerization. | 10-15-2009 |
20090299013 | Process for the Preparation of Star and Block-Copolymers Via Epoxy-Functionalized Alkoxyamines - The instant invention relates to a process for the preparation of star and block-copolymers, which are prepared by controlled free radical polymerization using epoxy-functionalized alkoxyamines and multifunctional compounds capable of reacting with the epoxy group. | 12-03-2009 |
20090306294 | Method of producing comb block-copolymers from epoxy-functionalized nitroxylethers and anionically polymerizable monomers - The invention pertains to a method of producing comb block copolymers from epoxy-functionalized nitroxylethers and further monomers by anionic polymerization followed by nitroxyl mediated controlled free radical polymerization. The block copolymer backbone has defined initiating points where radical grafting of ethylenically unsaturated monomers can take place. Further aspects of the invention are comb block copolymers obtained by this process and the use of such polymers for plastic applications. | 12-10-2009 |
20100029844 | Liquid polymeric phosphites and phosphonites as stabilizers - Novel liquid polymeric compounds of the formula (I) wherein the general symbols are as defined in claim | 02-04-2010 |
20100036083 | Process For The Preparation Of Polyamides In The Presence of a Phosphonate - The invention relates to the preparation of polyamides in the presence of a phosphonate, which is already added at the beginning of the polycondensation or polyaddition process. The resulting prepolymer exhibits a high molecular weight and is almost colorless. A further aspect of the invention is the use of a phosphonate for increasing the molecular weight and modification of polyamides during polycondensation. | 02-11-2010 |
20100069557 | DISPERSING AGENTS IN COMPOSITES - The present invention is directed to compositions comprising (a) a synthetic polymer, (b) a talc as a filler, wherein the talc particles have a mean particle size of from 0.4 to 25 μm, and are present in an amount of from 0.1 to 10% based on the weight of component (a) and (c) a dispersing agent which is based on a non-ionic surfactant or an amphiphilic statistical, block or comb copolymer, provided that when the synthetic polymer (a) is a polyamide, this is present in an amount of less than 55% based on the weight of (a), (b) and (c). | 03-18-2010 |
20100144935 | SYMMETRIC AZO COMPOUNDS IN FLAME RETARDANT COMPOSITIONS - The invention, relates to azo-compounds of formula (I), wherein >N—O—R substituted 2,2,6,6,-tetraalkyl-piperidyl groups are present. These azo-compounds have excellent flame retardant properties, either if applied alone, or combined with other compounds, having flame retardant properties. | 06-10-2010 |
20100210800 | METHOD OF PREPARING ETHYLENE POLYMERS BY CONTROLLED HIGH PRESSURE POLYMERIZATION - The present invention relates to a method for the radical polymerization or copolymerization of ethylene at high pressures using a hydroxylamine ester as radical initiator. The hydroxylamine esters according to the invention are suitable initiators for the high pressure polymerization of ethylene leading to high molecular weight polyethylenes with narrow molecular weight distributions (Poyldispersity Index PD=1.2-4.5). | 08-19-2010 |
20100317786 | PROCESS FOR THE PREPARATION OF POLYOLEFIN NANOCAMPOSITES - The instant invention discloses a process for the preparation a polyolefin nanocomposite which comprises melt mixing a mixture of a polyolefin, a filler and a non-ionic surfactant. | 12-16-2010 |
20110028633 | Dispersing Agents in Nanocomposites - The instant invention discloses a composition, preferably a nanocomposite material, comprising (a) a synthetic polymer, (b) a filler such as for example a natural or synthetic phyllosilicate or a mixture of such phyllosilicates, preferably in nanoparticles, and (c) a dispersing agent prepared by controlled free radical polymerization (CFRP). | 02-03-2011 |
20110190428 | FLAME RETARDANT COMPOSITIONS WITH POLYMERIC DISPERSING AGENTS - The invention relates to a flame retardant composition, wherein the following components: a) At least one flame retardant component selected from the group consisting of phosphinic acid salts and nitrogen containing compounds; and b) At least one polymeric dispersing agent selected from the group consisting of styrenemaleic acid anhydride copolymers, long chain carboxylic acid salts and aliphatic polyether substituted by acidic groups; and c) A polymer substrate; are present. | 08-04-2011 |
20110269880 | LAYERED SILICATE FLAME RETARDANT COMPOSITIONS - The invention relates to flame retardant compositions that contain mixtures of melamine polyphosphates with layered silicates added to the polymer substrates, particularly polyamides. | 11-03-2011 |
20120252931 | STABILIZER COMPOSITION FOR FILLED POLYMERS AND NANOCOMPOSITES - The present invention relates to a stabilizer composition comprising a phenolic antioxidant and/or a processing stabilizer together with selected glycidyl(meth)acrylate copolymers and a filled thermoplastic polymer, in particular a nanocomposite. Further aspects of the invention are a process for the stabilization of filled thermoplastic polymers, in particular nanocomposites with a phenolic antioxidant and/or a processing stabilizer together with selected glycidyl(meth)acrylate copolymers and the use of such a composition for the stabilization of filled thermoplastic polymers, in particular nano-composites. | 10-04-2012 |
20130052277 | PROCESS FOR THE PREPARATION OF AN ANTIMICROBIAL ARTICLE - Disclosed is a process for preparing an antimicrobial article, wherein a silver colloid is formed in situ as a result of the components employed. The process comprises the steps of (i) providing a liquid, which contains a soluble polar polymer in a solvent selected from certain polar organic solvents; (ii) adding a silver salt selected from alpha-functionalized silver carboxylates to said liquid; (iii) allowing the mixture to react with formation of a silver colloid; and (iv) separating the solvent from the mixture and forming of the antimicrobial article. The antimicrobial articles thus obtained may be sheets, films, fibres, coating layers, and especially membranes like a semipermeable membrane for ultrafiltration, water separation or gas separation. | 02-28-2013 |
20130059952 | PHOSPHO-SUBSTITUTED ALKOXYAMINE COMPOUNDS - The invention relates to compounds of the group of so-called sterically hindered amines (HALS) which are substituted by phospho groups. The invention also relates to flame retardant compositions wherein these compounds are added to the polymer substrate. | 03-07-2013 |
20130150542 | Method Of Preparing Ethylene Polymers By Controlled High Pressure Polymerization - The present invention relates to a method for the radical polymerization or copolymerization of ethylene at high pressures using a hydroxylamine ester as radical initiator. The hydroxylamine esters according to the invention are suitable initiators for the high pressure polymerization of ethylene leading to high molecular weight polyethylenes with narrow molecular weight distributions (Poyldispersity Index PD=1,2−4.5). | 06-13-2013 |
20130165558 | LAYERED SILICATE FLAME RETARDANT COMPOSITIONS - The invention relates to flame retardant compositions that contain mixtures of melamine polyphosphates with layered silicates added to the polymer substrates, particularly polyamides. | 06-27-2013 |