Patent application number | Description | Published |
20110034657 | Reactor Systems and Processes for Using the Same - A process for the polymerization of olefin's, including: introducing an olefin and a polymerization catalyst into a polymerization reactor to form a polyolefin, the polymerization reactor including: a fluidized bed region having a top and a bottom; and a motive bed region; wherein a first end of the motive bed region is fluidly connected to the top of the fluidized bed region; and wherein a second end of the motive bed region is fluidly connected to the bottom of the fluidized bed region; and wherein a diameter of the fluidized bed region is greater than a diameter of the motive bed region; circulating at least a portion of the olefin, the catalyst, and the polyolefin through the fluidized bed region and the motive bed region; maintaining a dense-phase fluidized bed within the fluidized bed region; recovering polyolefin from the fluidized bed region, is provided. A reactor system directed to the process is also provided. | 02-10-2011 |
20130085245 | Methods for Reducing Static Charge of a Catalyst and Methods for Using the Catalyst to Produce Polyolefins - Catalysts and methods for making and using the same are provided. The method for fabricating a catalyst may includes contacting a supported catalyst with a monomer under conditions that reduce an overall charge of the catalyst to less than about 75% of an initial charge of the catalyst. A method for polymerization may include introducing a pre-polymerized catalyst and one or more olefins into a gas phase fluidized bed reactor, operating the reactor at conditions sufficient to produce a polyolefin, wherein the polymerization is carried out in the substantial absence of any continuity additives. | 04-04-2013 |
20140200317 | Methods for Reducing Static Charge of a Catalyst and Methods for Using the Catalyst to Produce Polyolefins - Catalysts and methods for making and using the same are provided. The method for fabricating a catalyst may includes contacting a supported catalyst with a monomer under conditions that reduce an overall charge of the catalyst to less than about 75% of an initial charge of the catalyst. A method for polymerization may include introducing a pre-polymerized catalyst and one or more olefins into a gas phase fluidized bed reactor, operating the reactor at conditions sufficient to produce a polyolefin, wherein the polymerization is carried out in the substantial absence of any continuity additives. | 07-17-2014 |
Patent application number | Description | Published |
20100324340 | SHORT CHAIN POLYETHER POLYOLS PREPARED FROM ULTRA-LOW WATER-CONTENT STARTERS VIA DMC CATALYSIS - The present invention provides a process for the polyoxyalkylation of a starter involving establishing oxyalkylation conditions in an oxyalkylation reactor in the presence of a double metal cyanide (DMC) catalyst, continuously introducing into the reactor at least one alkylene oxide and an acidified, ultra-low water content starter, in which the starter contains greater than about 100 ppm and less than or equal to about 500 ppm water, based on the weight of the starter, and recovering an oxyalkylated low molecular weight starter polyether product. The inventive process allows the production of short chain polyether polyols which have hydroxyl numbers of from greater than 250 up to about 500, from hygroscopic initiators, such as glycerin, without DMC catalyst deactivation. | 12-23-2010 |
20110230581 | PROCESS FOR THE PRODUCTION OF POLYETHER POLYOLS WITH A HIGH ETHYLENE OXIDE CONTENT - Polyether polyols with an OH number of from 15 to 120 mg of KOH/g are produced by (i) introducing a mixture of DMC catalyst and a poly(oxyalkylene)polyol or a mixture of DMC catalyst and a polyether polyol (“heel”) obtainable by the process according to the invention is initially into a reactor and (ii) continuously introducing one (or more) low molecular weight starter compound(s) with a (mixed) hydroxyl functionality of from 2.2 to 6.0 and a mixture composed of a) 73 to 80 parts by weight (per 100 parts by weight of a) plus b)) of ethylene oxide and b) 27 to 20 parts by weight (per 100 parts by weight of a) plus b)) of at least one substituted alkylene oxide corresponding to a specified formula into the mixture from step (i). These polyether polyols are particularly useful for the production of flexible polyurethane foams. | 09-22-2011 |
20130023599 | POLYURETHANE FOAMS MADE WITH ALKOXYLATED VEGETABLE OIL HYDROXYLATE - The present invention provides polyurethane foams and elastomers made with an alkoxylated vegetable oil hydroxylate replacing at least a portion of the typically used petroleum-based polyol(s). Also provided are processes for making the inventive foams and elastomers and for making alkoxylated vegetable oil hydroxylates. The alkoxylated vegetable oil hydroxylates are environmentally-friendly, bio-based polyols which advantageously also offer the potential of improved hydrophobicity in polyurethane foams and elastomers. The inventive polyurethane foams and elastomers may find use in a wide variety of products such as automobile interior parts, polyurethane structural foams, floor coatings and athletic running tracks. | 01-24-2013 |
20130261207 | PROCESS FOR PRODUCTION OF POLYMER POLYOLS - The present invention provides a process for preparing a polymer polyol (PMPO) by alkoxylating a starter compound(s) having active hydrogen atoms in the presence of a double metal cyanide (DMC) catalyst, radical initiator(s) and optionally PMPO stabilizers and simultaneously polymerizing unsaturated monomer(s) with radical initiator(s). The polymer polyols (PMPOs) made by the inventive process may find use in the preparation of polyurethane foams and elastomers, | 10-03-2013 |
20140275312 | BASE-CATALYZED, LONG CHAIN, ACTIVE POLYETHERS FROM SHORT CHAIN DMC-CATALYZED STARTERS - The present invention provides long chain, active polyether polyols which are characterized by a functionality of 2 to 6 and an equivalent weight of 1000 to 2200 Da. These long chain polyethers comprise the alkoxylation product of (1) a starter composition having an equivalent weight of 350 Da or less, with (2) one or more alkylene oxides, in which up to 20% of ethylene oxide may be added as a cap, in the presence of (3) at least one basic catalyst. Suitable starter compositions (1) comprise the alkoxylation product of (a) a low molecular weight polyether having a functionality of 3 and an equivalent weight of less than 350 Da, (b) at least one low molecular weight starter compound comprising glycerin, and (c) propylene oxide or a mixture of propylene oxide and ethylene oxide, in the presence of (d) at least one double metal cyanide catalyst. A process for preparing these long chain polyether polyols is also disclosed. | 09-18-2014 |
20140275471 | ACTIVE POLYMER POLYOLS AND A PROCESS FOR THEIR PRODUCTION - Polymer polyols having a solids content of greater than 40 wt. %, a total ethylene oxide content of up to 25 wt. %, and a viscosity at 25° C. of less than 15,000 centistokes are produced by reacting (1) a base polyol having active hydrogen atoms with an ethylene oxide content of from 15 to 40 wt. % that has been formed in the presence of a double metal cyanide (DMC) catalyst, (2) one or more unsaturated monomers, (3) at least one radical initiator, optionally (4) a preformed stabilizer and optionally (5) a chain transfer agent. These polymer polyols (PMPOs) are useful in the preparation of polyurethane foams and elastomers. | 09-18-2014 |
20150218303 | BASE-CATALYZED, LONG-CHAIN, ACTIVE POLYETHERS FROM SHORT CHAIN DMC-CATALYZED STARTERS - The present invention provides long chain, active polyether polyols which are characterized by a functionality of 2 to 6 and an equivalent weight of 1000 to 2200 Da. These long chain polyethers comprise the alkoxylation product of (1) a starter composition having an equivalent weight of 350 Da or less, with (2) one or more alkylene oxides, in which up to 20% of ethylene oxide may be added as a cap, in the presence of (3) at least one basic catalyst. Suitable starter compositions (1) comprise the alkoxylation product of (a) a low molecular weight polyether having a functionality of 3 and an equivalent weight of less than 350 Da, (b) at least one low molecular weight starter compound comprising glycerin, and (c) propylene oxide or a mixture of propylene oxide and ethylene oxide, in the presence of (d) at least one double metal cyanide catalyst. A process for preparing these long chain polyether polyols is also disclosed. | 08-06-2015 |
Patent application number | Description | Published |
20160069695 | METHODS AND APPARATUS FOR PROVIDING TRAVEL INFORMATION - A method of providing route attribute information is described, together with a device for performing the same. The method comprises accessing information indicative of a primary route to a destination location determined with respect to a trip database storing information indicative of a personal road network of a user of a mobile device, and an attribute of the primary route. One or more alternate routes to the destination location are determined, together with an attribute of each alternate route. Attribute information associated with at least one alternate route to the destination is output when a location of the mobile device is proximal to a decision point of the personal road network. | 03-10-2016 |
20160076905 | METHODS AND APPARATUS FOR PROVIDING TRAVEL INFORMATION - A method of providing traffic information is described, together with a device for performing the same. The method comprises determining a location of a mobile device, receiving traffic information, and determining, with respect to a trip database storing information indicative of a personal road network of a user of the mobile device, whether traffic information associated with one or more road segments in the personal network within a predetermined distance of the current location has been received. One or more no-jam events are generated for respective road segments in the personal network for which it is determined that no traffic information has been received. | 03-17-2016 |
20160097649 | METHOD AND APPARATUS FOR PREDICTING A DESTINATION USING A ROUTE SEARCH ALGORITHM - A method of predicting a destination of a user of a mobile device is described, together with a device for performing the same. The method comprises determining a location of the mobile device, and executing a route search algorithm with respect to a trip data-base. The trip database stores information indicative of a personal road network of a user of the mobile device, one or more road segments in the personal road network being associated with a respective destination location, and cost information associated with road segments in the personal network, the cost information being based, at least in part, on traversal information in the trip database. | 04-07-2016 |