Patent application number | Description | Published |
20080262164 | Isotactic specific catalyst for direct production of highly isotactic poly (propylene oxide) or highly isotactic poly (butylene oxide) - (Salph or methoxy salph) Co (initiating ligand) catalyze homopolymerizing rac-PO to produce pure highly isotactic PPO and rac-1-butylene oxide to produce pure isotactic poly(butylene oxide). A product is unfractionated isotactic PPO of m-dyad content >81%, normally at least 99%. | 10-23-2008 |
20090299032 | Methods of Controlling Molecular Weight Distribution of Polymers and Compositions Thereof - A catalyst, co-catalyst, and/or chain transfer agent is added at a time after initiation of an addition polymerization reaction to produce a polymer product with a widened molecular weight distribution relative to having all of the components in the original reaction mixture. The catalyst, co-catalyst, or chain transfer agent may be added discretely or continuously to the reaction to produce a product with a bimodal, trimodal, or other broadened molecular weight distribution. | 12-03-2009 |
20100311941 | COPOLYMERIZATION OF EPOXIDES AND CYCLIC ANHYDRIDES - The present invention provides novel polymers and methods of preparing the same. | 12-09-2010 |
20110065894 | METHODS OF CONTROLLING MOLECULAR WEIGHT DISTRIBUTION OF POLYMERS AND COMPOSITIONS THEREOF - A catalyst, co-catalyst, and/or chain transfer agent is added at a time after initiation of an addition polymerization reaction to produce a polymer product with a widened molecular weight distribution relative to having all of the components in the original reaction mixture. The catalyst, co-catalyst, or chain transfer agent may be added discretely or continuously to the reaction to produce a product with a bimodal, trimodal, or other broadened molecular weight distribution. | 03-17-2011 |
20110152497 | CATALYSTS AND METHODS FOR POLYMER SYNTHESIS - The present invention provides unimolecular metal complexes having increased activity in the copolymerization of carbon dioxide and epoxides. Also provided are methods of using such metal complexes in the synthesis of polymers. According to one aspect, the present invention provides metal complexes comprising an activating species with co-catalytic activity tethered to a multidentate ligand that is coordinated to the active metal center of the complex. | 06-23-2011 |
20110201779 | PURIFICATION OF POLYCARBONATES - The present disclosure provides, in part, a method for removing a catalyst from a product of catalyzed aliphatic polycarbonate polymerization reaction. | 08-18-2011 |
20110207899 | ALIPHATIC POLYCARBONATE QUENCH METHOD - The present disclosure is directed to, in part, an aliphatic polycarbonate polymerization reaction initiated by combining an epoxide with carbon dioxide in the presence of a catalytic transition metal-ligand complex to form a reaction mixture, and further quenching that polymerization reaction by contacting the reaction mixture with an acid containing a non-nucleophilic anion produces a crude polymer solution with improved stability and processability. | 08-25-2011 |
20110218127 | POLYCARBONATE BLOCK COPOLYMERS - The disclosure pertains to amphiphilic block copolymers comprising an aliphatic polycarbonate chain coupled to a hydrophilic polymer. Such amphiphilic polymers may have the formula A-L-B, where A- is a polycarbonate or polyethercarbonate chain having from about 3 to about 500 repeating units, L is a linker moiety and —B is a hydrophilic oligomer having from about 4 to about 200 repeating units. Provided copolymers are useful as surfactants capable of emulsifying aqueous solutions and supercritical carbon dioxide. Provided copolymers also have utility as additives for use in enhanced oil recovery methods. | 09-08-2011 |
20110230580 | POLYCARBONATE POLYOL COMPOSITIONS AND METHODS - In one aspect, the present disclosure encompasses polymerization systems for the copolymerization of CO | 09-22-2011 |
20110257296 | TUNABLE POLYMER COMPOSITIONS - The present invention provides polymer compositions having a tunable decomposition temperature. Suitable additives are disclosed for lowering the decomposition temperature of polymer compositions. The invention further provides methods of preparing such polymer compositions with tunable decomposition temperatures. | 10-20-2011 |
20110313128 | ISOTACTIC SPECIFIC CATALYST FOR DIRECT PRODUCTION OF HIGHLY ISOTACTIC POLY (PROPYLENE OXIDE) OR HIGHLY ISOTACTIC POLY (BUTYLENE OXIDE) - (Salph or methoxy salph) Co (initiating ligand) catalyze homopolymerizing rac-PO to produce pure highly isotactic PPO and rac-1-butylene oxide to produce pure isotactic poly(butylene oxide). A product is unfractionated isotactic PPO of m-dyad content>81%, normally at least 99%. | 12-22-2011 |
20120123137 | PROCESS FOR BETA-LACTONE PRODUCTION - The present application provides a method for producing an beta-lactone product. The method includes the steps of: reacting an epoxide, a solvent with a carbonylation catalyst and carbon monoxide to produce a reaction stream comprising a beta-lactone then separating a portion of the beta-lactone in the reaction stream from the solvent and carbonylation catalyst to produce: i) a beta-lactone stream with the beta-lactone, and ii) a catalyst recycling stream including the carbonylation catalyst and the high boiling solvent; and adding the catalyst recycling stream to the feed stream. | 05-17-2012 |
20120156410 | STRUCTURALLY PRECISE POLY(PROPYLENE CARBONATE) COMPOSITIONS - The present invention provides articles made from structurally precise poly(propylene carbonate) and blends thereof. Provided articles include articles manufactured from poly(propylene carbonate) wherein the PPC has a high head-to-tail ratio, low ether linkage content, narrow polydispersity and low cyclic carbonate content. Also provided are articles made from, incorporating or coated with structurally precise PPC. | 06-21-2012 |
20130066044 | POLYCARBONATE POLYOL COMPOSITIONS AND METHODS - In one aspect, the present disclosure encompasses polymerization systems for the copolymerization of CO | 03-14-2013 |
20130144031 | CATALYSTS AND METHODS FOR POLYMER SYNTHESIS - The present invention provides unimolecular metal complexes having increased activity in the copolymerization of carbon dioxide and epoxides. Also provided are methods of using such metal complexes in the synthesis of polymers. According to one aspect, the present invention provides metal complexes comprising an activating species with co-catalytic activity tethered to a multidentate ligand that is coordinated to the active metal center of the complex. | 06-06-2013 |
20130144032 | CATALYSTS AND METHODS FOR POLYMER SYNTHESIS - The present invention provides unimolecular metal complexes having increased activity in the copolymerization of carbon dioxide and epoxides. Also provided are methods of using such metal complexes in the synthesis of polymers. According to one aspect, the present invention provides metal complexes comprising an activating species with co-catalytic activity tethered to a multidentate ligand that is coordinated to the active metal center of the complex. | 06-06-2013 |
20130144033 | CATALYSTS AND METHODS FOR POLYMER SYNTHESIS - The present invention provides unimolecular metal complexes having increased activity in the copolymerization of carbon dioxide and epoxides. Also provided are methods of using such metal complexes in the synthesis of polymers. According to one aspect, the present invention provides metal complexes comprising an activating species with co-catalytic activity tethered to a multidentate ligand that is coordinated to the active metal center of the complex. | 06-06-2013 |
20130165670 | SUCCINIC ANHYDRIDE FROM ETHYLENE OXIDE - Continuous flow systems and methods produce succinic anhydride by a double carbonylation of ethylene oxide with carbon monoxide and at least one catalyst. In some embodiments, the double carbonylation occurs using a single catalyst. In other embodiments, a first catalyst is used to promote the first carbonylation, and a second catalyst different from the first catalyst is used to promote the second carbonylation. The succinic anhydride is isolated from the product stream by crystallization and the catalyst is recycled to the reaction stream. | 06-27-2013 |
20130172482 | POLYMER COMPOSITIONS AND METHODS - The present invention encompasses polymer compositions comprising aliphatic polycarbonate chains containing sites of olefinic unsaturation. In certain embodiments the aliphatic polycarbonate chains comprise sites of olefinic unsaturation capable of participating in radical-promoted olefin polymerizations. In certain embodiments, the invention encompasses composites formed by the polymerization or cross-linking of a combination of olefinic monomers and aliphatic polycarbonate chains containing sites of olefinic unsaturation. | 07-04-2013 |
20130209775 | POLYMER BLENDS - The present invention provides, among other things, extruded blends of aliphatic polycarbonates and polyolefins. In one aspect, provided blends comprise aliphatic polycarbonates such as poly(propylene carbonate) and a lesser amount of a crystalline or semicrystalline polymer. In certain embodiments, provided blends are characterized in that they exhibit unexpected improvements in their elongation properties. In another aspect, the invention provides methods of making such materials and applications of the materials in applications such as the manufacture of consumer packaging materials. | 08-15-2013 |
20130244864 | POLYCARBONATE POLYOL COMPOSITIONS AND METHODS - In one aspect, the present disclosure encompasses polymerization systems for the copolymerization of CO | 09-19-2013 |
20130274401 | ADHESIVE COMPOSITIONS AND METHODS - The present invention encompasses polyurethane adhesive compositions comprising aliphatic polycarbonate chains. In one aspect, the present invention encompasses polyurethane adhesives derived from aliphatic polycarbonate polyols and polyisocyanates wherein the polyol chains contain a primary repeating unit having a structure: | 10-17-2013 |
20130281633 | POLYMER COMPOSITIONS AND METHODS - The present disclosure describes polymer compositions comprising aliphatic polycarbonate chains containing epoxy functional groups. In certain embodiments, the aliphatic polycarbonate chains comprise epoxy functional groups capable of participating in epoxide ring-opening reactions. In certain embodiments, the invention encompasses composites formed by the reaction of nucleophilic reagents and epoxide functional groups, wherein the epoxide functional groups are located on aliphatic polycarbonate chains. | 10-24-2013 |
20130281715 | PROCESS FOR BETA-LACTONE PRODUCTION - The present application provides a method for producing an beta-lactone product. The method includes the steps of: reacting an epoxide, a solvent with a carbonylation catalyst and carbon monoxide to produce a reaction stream comprising a beta-lactone then separating a portion of the beta-lactone in the reaction stream from the solvent and carbonylation catalyst to produce: i) a beta-lactone stream with the beta-lactone, and ii) a catalyst recycling stream including the carbonylation catalyst and the high boiling solvent; and adding the catalyst recycling stream to the feed stream. | 10-24-2013 |
20130303724 | POLYCARBONATE POLYOL COMPOSITIONS - The present invention provides polycarbonate polyol compositions with improved characteristics. Such polycarbonate polyol compositions are useful in thermosetting applications for the production of coatings for consumer products. The present invention provides compositions having such improved characteristics, in particular, polycarbonate polyol compositions having a glass transition temperature (Tg) from about −20° C. to about 60° C., from about −20° C. to about 50° C., or from about 0° C. to about 30° C., are particularl useful in thermosetting applications. In some embodiments, polycarbonate polyol compositions have a Tg from about −20° C. to about 3° C. In some embodiments, polycarbonate polyol compositions have a Tg from about 0° C. to about 50° C., from about 0° C. to about 50° C., or from about 10 “C. to about 40° C. | 11-14-2013 |
20140024795 | ALIPHATIC POLYCARBONATE POLYOLS CONTAINING SILYL GROUPS - In one aspect, the present invention pertains to novel silyl polyurethane (SPUR) compositions incorporating aliphatic polycarbonate polyols, as well as methods of making, formulating and using these novel materials. Also provided are films and higher polymers made from the novel SPUR compositions, as well as articles coated with, made from, or incorporating these compositions. | 01-23-2014 |
20140031453 | POLYCARBONATE BLOCK COPOLYMERS - The disclosure pertains to amphiphilic block copolymers comprising an aliphatic polycarbonate chain coupled to a hydrophilic polymer. Such amphiphilic polymers may have the formula A-L-B, where A- is a polycarbonate or polyethercarbonate chain having from about 3 to about 500 repeating units, L is a linker moiety and —B is a hydrophilic oligomer having from about 4 to about 200 repeating units. Provided copolymers are useful as surfactants capable of emulsifying aqueous solutions and supercritical carbon dioxide. Provided copolymers also have utility as additives for use in enhanced oil recovery methods. | 01-30-2014 |
20140046008 | POLYCARBONATE POLYOL COMPOSITIONS AND METHODS - In one aspect, the present disclosure encompasses polymerization systems for the copolymerization of CO | 02-13-2014 |
20140187660 | POLYMER COMPOSITIONS AND METHODS - The present invention encompasses polyurethane compositions comprising aliphatic polycarbonate chains. In one aspect, the present invention encompasses polyurethane foams, thermoplastics and elastomers derived from aliphatic polycarbonate polyols and polyisocyanates wherein the polyol chains contain a primary repeating unit having a structure: | 07-03-2014 |
20140275575 | PROCESS FOR BETA-LACTONE PRODUCTION - The present application provides a method for producing an beta-lactone product. The method includes the steps of: reacting an epoxide, a solvent with a carbonylation catalyst and carbon monoxide to produce a reaction stream comprising a beta-lactone then separating a portion of the beta-lactone in the reaction stream from the solvent and carbonylation catalyst to produce: i) a beta-lactone stream with the beta-lactone, and ii) a catalyst recycling stream including the carbonylation catalyst and the high boiling solvent; and adding the catalyst recycling stream to the feed stream. | 09-18-2014 |
20140296522 | CATALYTIC CARBONYLATION CATALYSTS AND METHODS - In one aspect, the present invention provides catalysts for the carbonylation of heterocycles. The inventive catalysts feature metal-ligand complexes having cationic functional groups tethered to the ligand, wherein the tethered cationic groups are associated with anionic metal carbonyl species. The invention also provides methods of using the inventive catalysts to affect the ring opening carbonylation of epoxides. | 10-02-2014 |
20140343246 | CATALYSTS AND METHODS FOR POLYMER SYNTHESIS - The present invention provides unimolecular metal complexes having increased activity in the copolymerization of carbon dioxide and epoxides. Also provided are methods of using such metal complexes in the synthesis of polymers. According to one aspect, the present invention provides metal complexes comprising an activating species with co-catalytic activity tethered to a multidentate ligand that is coordinated to the active metal center of the complex. | 11-20-2014 |
20150051369 | METHODS FOR POLYMER SYNTHESIS - The present invention provides methods for reducing induction periods in epoxide-CO | 02-19-2015 |
20150083326 | ADHESIVE COMPOSITIONS AND METHODS - The present invention encompasses polyurethane adhesive compositions comprising aliphatic polycarbonate chains. In one aspect, the present invention encompasses polyurethane adhesives derived from aliphatic polycarbonate polyols and polyisocyanates wherein the polyol chains contain a primary repeating unit having a structure. In another aspect, the invention provides articles comprising the inventive polyurethane compositions as well as methods of making such compositions. | 03-26-2015 |