This disclosure provides a process for removing acrolein or allyl alcohol from a polyester composition, the process comprising: combining a polyester composition derived from 1,3-propanediol with an amino amide or a primary amine; wherein the amino amide or the primary amine is combined in sufficient quantities to scavenge acrolein or allyl alcohol produced from degradation of the polyester composition. An analysis of reactions between anthranilamide (AAA) and acrolein demonstrates how amines or amino amides can scavenge acrolein from thermally processed poly(trimethylene terephthalate) and poly(trimethylene furan-2,5-dicarboxylate), and thermodynamic models are presented as guidance for matching targets with scavenging agent.

This disclosure provides a process for removing acrolein or allyl alcohol from a polyester composition, the process comprising: combining a polyester composition derived from 1,3-propanediol with an amino amide or a primary amine; wherein the amino amide or the primary amine is combined in sufficient quantities to scavenge acrolein or allyl alcohol produced from degradation of the polyester composition. An analysis of reactions between anthranilamide (AAA) and acrolein demonstrates how amines or amino amides can scavenge acrolein from thermally processed poly(trimethylene terephthalate) and poly(trimethylene furan-2,5-dicarboxylate), and thermodynamic models are presented as guidance for matching targets with scavenging agent.

A cake material is disclosed, made up of polyhydroxyalkanoate (PHA) cake that is formed directly from biomass and subsequent purification processes absent any heated drying step, with a moisture content of no less than about 5% by weight, and a Dv (90) particle size of no more than about 8 microns.

A cake material is disclosed, made up of polyhydroxyalkanoate (PHA) cake that is formed directly from biomass and subsequent purification processes absent any heated drying step, with a moisture content of no less than about 5% by weight, and a Dv (90) particle size of no more than about 8 microns.

The present invention relates to a polyester container. The polyester container is formed from a polyester resin containing a particular content of diol moieties derived from isosorbide and diethylene glycol, and thus can show high transparency in spite of a great wall thickness thereof.

The method isolates polyhydroxyalkanoate (PHA) from a PHA-rich bacterial biomass, to the PHA isolated by the method and to a PHA having specific properties. The method treats an aqueous suspension of the PHA-rich bacterial biomass with a minimal amount of sodium hypochlorite, a methanol wash and extraction of PHA from the biomass with dimethyl carbonate (DMC).

The present invention is directed to devices and methods for monitoring the purity of monomers, adjusting the polymerization conditions, and consequently improving a polymerization reaction process. In one method, monomer purity is estimated using an on-line evaluation by raising the temperature of the monomer formulation having a defined melting point to a first elevated temperature at least 20° C. above a preset melting point for a selected monomer formulation; cooling the monomer formulation at a controlled cooling rate in the range from about 0.5 to 50° C. per minute; measuring at least one critical property selected from the group consisting of a) crystallization peak temperature at the onset of crystallization, b) an area under the crystallization peak, which represents the heat or enthalpy of crystallization, ΔHc and combinations thereof, comparing the at least one of the selected critical properties measures relative to such properties for standard setting monomer formulations.

Procedure for the purification of biodegradable thermoplastic polymer particles for medical and/or pharmaceutical use without the use of organic solvents, as well as the particles obtained themselves, and the use of polymeric particles obtained by this procedure to manufacture parenteral administered medicinal products and/or implantable medical devices.

A plasticizer for a vinyl chloride resin with excellent balance of non-transfer properties, fogging resistance, flexibility, heat resistance, and cold resistance is provided. Specifically, a plasticizer for a vinyl chloride resin is a polyester made from a glycol having 2 to 18 carbon atoms, an aliphatic dicarboxylic acid having 4 to 14 carbon atoms, and a monoalcohol having 4 to 18 carbon atoms and/or a monocarboxylic acid having 2 to 21 carbon atoms, as reaction raw materials, in which the polyester has a number average molecular weight in a range of 500 to 6,000 and contains components with a molecular weight of 600 or less in a range of 0.5 to 3.0% by mass in terms of area ratio in gel permeation chromatography measurement.

A plasticizer for a vinyl chloride resin with excellent balance of non-transfer properties, fogging resistance, flexibility, heat resistance, and cold resistance is provided. Specifically, a plasticizer for a vinyl chloride resin is a polyester made from a glycol having 2 to 18 carbon atoms, an aliphatic dicarboxylic acid having 4 to 14 carbon atoms, and a monoalcohol having 4 to 18 carbon atoms and/or a monocarboxylic acid having 2 to 21 carbon atoms, as reaction raw materials, in which the polyester has a number average molecular weight in a range of 500 to 6,000 and contains components with a molecular weight of 600 or less in a range of 0.5 to 3.0% by mass in terms of area ratio in gel permeation chromatography measurement.