Disclosed herein are polymers, copolymers and polymer systems based on polypropiolactones which can be biodegradable and can enhance the recyclability of polymer systems, which can be functionalized to introduce desired functionality into the polymers and/or which may optionally be prepared from renewable raw materials. Disclosed are novel functionalized beta propiolactones. Some of the novel functionalized beta propiolactones have functional groups bound to the ring structure of the lactone that provide improved polymer systems. Disclosed are novel homopolymers of the functionalized beta propiolactones. Disclosed are novel copolymers based on the functionalized beta propiolactones with beta propiolactone or other monomers which copolymerize with the functionalized beta propiolactones.

Disclosed herein are polymers, copolymers and polymer systems based on polypropiolactones which can be biodegradable and can enhance the recyclability of polymer systems, which can be functionalized to introduce desired functionality into the polymers and/or which may optionally be prepared from renewable raw materials. Disclosed are novel functionalized beta propiolactones. Some of the novel functionalized beta propiolactones have functional groups bound to the ring structure of the lactone that provide improved polymer systems. Disclosed are novel homopolymers of the functionalized beta propiolactones. Disclosed are novel copolymers based on the functionalized beta propiolactones with beta propiolactone or other monomers which copolymerize with the functionalized beta propiolactones.

A foamed body includes a polylactic acid resin. An amount of the polylactic acid resin is 99.5% by mass or greater relative to a total amount of organic matter in the foamed body. A gel fraction of the foamed body is 0.1% or less. An expansion ratio of the foamed body is 5 times or greater.

A foamed body includes a polylactic acid resin. An amount of the polylactic acid resin is 99.5% by mass or greater relative to a total amount of organic matter in the foamed body. A gel fraction of the foamed body is 0.1% or less. An expansion ratio of the foamed body is 5 times or greater.

The present invention discloses a composition that may be extruded and/or injection moulded, comprising a chemically modified softwood lignin and a polyester selected from PBS (PolyButylene Succinate), PBAT (PolyButylene Adipate Terephthalate) and PCL (PolyCaproLactone) or mixtures thereof. The chemically modified softwood lignin constitutes 10 to 25 weight-% of the total weight of the composition.

The present invention discloses a composition that may be extruded and/or injection moulded, comprising a chemically modified softwood lignin and a polyester selected from PBS (PolyButylene Succinate), PBAT (PolyButylene Adipate Terephthalate) and PCL (PolyCaproLactone) or mixtures thereof. The chemically modified softwood lignin constitutes 10 to 25 weight-% of the total weight of the composition.

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 biodegradable aqueous mixture for coating substrates is disclosed, which includes from about 35 to about 75 weight percent water and from about 25 to about 65 weight percent solids. The solids in turn are made up of from about 40 to about 99 weight percent polyhydroxyalkanoates based on the total dry weight of the solids. Moreover, the polyhydroxyalkanoates are in the form of polyhydroxyalkanoate particles having a moisture content of no less than about 1% by weight prior to mixing with the water and a Dv (90) particle size of no more than about 10 microns, as determined using ISO 8130-13:2019.

The use of inhibitory calcium carbonate as additive for a composition containing at least one polymer different from cellulose, wherein the inhibitory calcium carbonate is obtainable by means of a method in which calcium carbonate particles are coated with a composition comprising, based on its total weight, at least 0.1% by weight of at least one weak acid. Further described is a composition containing at least one polymer different from cellulose and inhibitory calcium carbonate.

The use of inhibitory calcium carbonate as additive for a composition containing at least one polymer different from cellulose, wherein the inhibitory calcium carbonate is obtainable by means of a method in which calcium carbonate particles are coated with a composition comprising, based on its total weight, at least 0.1% by weight of at least one weak acid. Further described is a composition containing at least one polymer different from cellulose and inhibitory calcium carbonate.