Abstract: The present invention provides biodegradable projectiles for toy launchers that contain viable seeds. When lost outdoors the projectiles do not pollute the environment but instead degrade naturally and the seeds grow into plants that enhance the landscape.

Abstract: The present invention provides biodegradable projectiles for toy launchers that contain viable seeds. When lost outdoors the projectiles do not pollute the environment but instead degrade naturally and the seeds grow into plants that enhance the landscape.

Abstract: Provided are integrated processes for she conversion of ethylene oxide to polypropiolactone. Systems for the production of polypropiolactone are also provided.

Abstract: In one aspect, the present disclosure encompasses polymerization systems for the copolymerization of CO2 and epoxides comprising 1) a catalyst including a metal coordination compound having a permanent ligand set and at least one ligand that is a polymerization initiator, and 2) a chain transfer agent having two or more sites that can initiate polymerization. In a second aspect, the present disclosure encompasses methods for the synthesis of polycarbonate polyols using the inventive polymerization systems. In a third aspect, the present disclosure encompasses polycarbonate polyol compositions characterized in that the polymer chains have a high percentage of —OH end groups and a high percentage of carbonate linkages. The compositions are further characterized in that they contain polymer chains having an embedded polyfunctional moiety linked to a plurality of individual polycarbonate chains.

Abstract: Provided are integrated processes for the conversion of ethylene oxide to polypropiolactone. System for the production of polypropiolactone are also provided.

Abstract: This application relates to nanostructured materials having selectively permeable structures that separate a liquid phase contained within the nanostructure from a volume outside of the nanostructure, and methods of making same. Such materials may be used in the manufacture of lithium anode compositions for secondary batteries or other energy storage devices.

Abstract: This application relates to nanostructured materials having selectively permeable structures that separate a liquid phase contained within the nanostructure from a volume outside of the nanostructure, and methods of making same. Such materials may be used as electrode materials for secondary batteries or other energy storage devices.

Abstract: Provided herein are systems, and methods of using such systems, for producing acrylic acid from ethylene oxide and carbon monoxide on an industrial scale. The composition includes: polypropiolactone having a concentration of greater than at least 90 wt %; a residual cobalt or ions thereof from a carbonylation catalyst in an amount of 10 ppm or less; acetic acid in an amount of 10 ppm or less; and tetrahydrofuran in amount of 10 ppm or less.

Abstract: This application relates to nanoparticles having improved electroactive cores comprising polythionate molecules (e.g. compounds with a structure ?O3S—(S)n—SO3?) encapsulated in shells, such as those that may be used as electrode materials for secondary batteries or other energy storage devices, and methods of making same.

Abstract: Described herein are methods of preparing poly(alkylene carbonate) polymers comprising an increased ratio of primary hydroxyl end groups to secondary hydroxyl end groups, and compositions thereof.

Abstract: Described herein are methods of preparing poly(alkylene carbonate) polymers comprising an increased ratio of primary hydroxyl end groups to secondary hydroxyl end groups, and compositions thereof.

Abstract: In one aspect, the present invention encompasses compositions of sustainable polycarbonate polymers, methods of producing such polymers, and methods for evaluating whether certain constituents of a polymer chain are derived from biomass or a fossil carbon source.

Abstract: The present invention provides biodegradable projectiles for toy launchers that contain viable seeds. When lost outdoors the projectiles do not pollute the environment but instead degrade naturally and the seeds grow into plants that enhance the landscape.

Abstract: The present invention encompasses polymer compositions comprising aliphatic polycarbonate chains containing functional groups that increase the polymer's ability to wet or adhere to inorganic materials. In certain embodiments, chain ends of the aliphatic polycarbonates are modified to introduce silicon-containing functional groups, boron-containing functional groups, phosphorous-containing functional groups, sulfonic acid groups or carboxylic acid groups.

Abstract: In one aspect, the present disclosure encompasses polymerization systems for the copolymerization of CO2 and epoxides comprising 1) a catalyst including a metal coordination compound having a permanent ligand set and at least one ligand that is a polymerization initiator, and 2) a chain transfer agent having two or more sites that can initiate polymerization. In a second aspect, the present disclosure encompasses methods for the synthesis of polycarbonate polyols using the inventive polymerization systems. In a third aspect, the present disclosure encompasses polycarbonate polyol compositions characterized in that the polymer chains have a high percentage of —OH end groups and a high percentage of carbonate linkages. The compositions are further characterized in that they contain polymer chains having an embedded polyfunctional moiety linked to a plurality of individual polycarbonate chains.

Abstract: The present invention provides nanofiltration membranes with reduced chemical reactivity that can be utilized in manufacturing processes where reactive feedstocks and/or products are utilized or produced. Methods of making and using the membranes are also provided.

Abstract: Provided are processes for monitoring and maintaining continuous carbonylation of epoxides or lactones. Processes include measuring parameters affecting the rate of the carbonylation reaction and adding supplemental replacement catalyst replacement components to maintain a constant rate of carbonylation.

Abstract: In one aspect, the present disclosure encompasses polymerization systems for the copolymerization of CO2 and epoxides comprising 1) a catalyst including a metal coordination compound having a permanent ligand set and at least one ligand that is a polymerization initiator, and 2) a chain transfer agent having two or more sites that can initiate polymerization. In a second aspect, the present disclosure encompasses methods for the synthesis of polycarbonate polyols using the inventive polymerization systems. In a third aspect, the present disclosure encompasses polycarbonate polyol compositions characterized in that the polymer chains have a high percentage of —OH end groups and a high percentage of carbonate linkages. The compositions are further characterized in that they contain polymer chains having an embedded polyfunctional moiety linked to a plurality of individual polycarbonate chains.

Abstract: Provided are processes for monitoring and maintaining continuous carbonylation of epoxides or lactones. Processes include measuring parameters affecting the rate of the carbonylation reaction and adding supplemental replacement catalyst replacement components to maintain a constant rate of carbonylation.

Abstract: Disclosed are compositions, systems and methods related to a polypropiolactone composition comprising polypropiolactone polymers. Such polymers include polypropiolactone chains of Formula (I): where n is an integer from 10 to about 1,000 and Y is either —H or a cation.