| Patent application number | Description | Published |
|---|
| 20090233097 | Process Technology For Recovering Brominated Styrenic Polymers From Reaction Mixtures in Which They Are Formed and/or Converting Such Mixtures into Pellets or into Granules or Pastilles - Brominated styrenic polymer is recovered from solution in a vaporizable solvent by converting the solution in a devolatilization extruder into a brominated styrenic polymer melt or flow and a separate vapor phase comprised predominately of vaporizable solvent, recovering the melt or flow from the devolatilization extruder, and allowing or causing the melt or flow to solidify. The solidified brominated styrenic polymer can be subdivided into a powder or pelletized form. Pellets so made have improved hardness and/or crush strength properties along with reduced formation of fines. Brominated anionic styrenic polymer is preferably used in the process. | 09-17-2009 |
| 20090299012 | PELLETIZED BROMINATED ANIONIC STYRENIC POLYMERS AND THEIR PREPARATION AND USE - Despite the frangibility of additive-free granules of brominated anionic styrenic polymer, it has been found possible by use of special mechanical processing to provide pellets of unadulterated brominated anionic styrenic polymer having a bromine content of at least about 50 wt % and in which at least about 70 wt % (preferably at least about 75 wt %) of the pellets are retained on a standard US No. 40 sieve and no more than about 30 wt % (preferably no more than about 25 wt %) are retained on a standard US No. 5 sieve. In preferred embodiments such pelletized anionic styrenic polymer is brominated anionic polystyrene having a bromine content of at least about 67 wt %, e.g., in the range of about 67 to about 71 wt %. Also preferred are pelletized brominated anionic styrenic polymers in which the melt flow index (ASTM D 1238-99) at 220° C., 2.16 kg is at least 4 g/10 min and preferably is at least 5 g/10 min. Another embodiment of this invention is a method of preparing pelletized unadulterated brominated anionic styrenic polymer which method comprises:
| 12-03-2009 |
| 20100012906 | LOW TRIPHENYLPHOSPHATE, HIGH PHOSPHOROUS CONTENT ISOPROPYL PHENYL PHOSPHATES WITH HIGH ORTHO ALKYLATION - The present invention relates to low triphenyl phosphate, high phosphorous content aryl phosphates with high orthoalkylation that are suitable for use as flame retardant compositions, processes for their preparation, and their use as flame retardants. | 01-21-2010 |
| 20100047577 | Converting Brominated Anionic Styrenic Polymer Into Harder and Larger Form for Storage, Shipment, and Use - Granules/pastilles of unadulterated brominated anionic styrenic polymer are prepared and provided. They are made by forming a downward plug flow from an orifice in a manifold or nozzle in proximity to a cooled traveling planar member. Such member is impervious to cooling liquid. There is a gap between the lower end of the orifice and the planar member. A portion of a plug of the molten polymer either (i) bridges such gap or (ii) freely drops from the orifice and falls upon the planar member, in either case forming an individual granule/pastille on the planar member and solidifies thereon. The traveling member is cooled by a mist or spray of cooling liquid applied to the underside of the planar member. The granules/pastilles have superior properties. | 02-25-2010 |
| 20100130654 | USE OF LOW TRIPHENYLPHOSPHATE, HIGH PHOSPHOROUS CONTENT ISOPROPYL PHENYL PHOSPHATES AS FLAME RETARDANTS IN RESINS - The present invention relates to the use of low triphenyl phosphate, high phosphorous content aryl phosphates with high ortho alkylation as flame retardant compositions. | 05-27-2010 |
| 20110224320 | Branched and Star-Branched Styrene Polymers, Telomers, and Adducts, Their Synthesis, Their Bromination, and Their Uses - New branched or star-branched styrene polymeric, telomeric, and monomeric product distributions, their preparation, their use as raw materials for bromination to produce flame retardants, the flame retardants themselves, and their use as flame retardants in various polymeric substrates are described. | 09-15-2011 |
| 20110224353 | Brominated Flame Retardants And Precursors Therefor - Described are a particular group of novel aromatic hydrocarbon telomers that, on bromination, result in the formation of novel flame retardants having a uniquely beneficial combination of properties. The resultant flame retardants and uses thereof are also described. The disclosure includes descriptions of methods for preparing both the aromatic hydrocarbon telomers and the brominated flame retardant polymers. | 09-15-2011 |
| 20120004438 | Low Triphenylphosphate, High Phosphorous Content Isopropyl Phenyl Phosphates With High Ortho Alkylation - The present invention relates to low triphenyl phosphate, high phosphorous content aryl phosphates with high ortho alkylation that are suitable for use as flame retardant compositions, processes for their preparation, and their use as flame retardants. | 01-05-2012 |
