The invention features adhesive devices for holding objects (e.g., bone fragments) fixed with respect to each other.

The invention features adhesive devices for holding objects (e.g., bone fragments) fixed with respect to each other.

The invention features adhesive devices for holding objects (e.g., bone fragments) fixed with respect to each other.

The invention includes a hot melt adhesive composition including from 15% by weight to 60% by weight of polyester polymer selected from a group consisting of poly lactic acid based polymer (PLA) and polyhydroxy alkanoate (PHA) based polymer and greater than 30% by weight to 85% by weight, greater than 40% by weight to 85% by weight, or even greater than 50% by weight to 85% by weight of a polyester plasticizer having a weight average molecular weight (M.sub.w) as tested by SEC of no greater than 10,000 Da.

The invention includes a hot melt adhesive composition including from 15% by weight to 60% by weight of polyester polymer selected from a group consisting of poly lactic acid based polymer (PLA) and polyhydroxy alkanoate (PHA) based polymer and greater than 30% by weight to 85% by weight, greater than 40% by weight to 85% by weight, or even greater than 50% by weight to 85% by weight of a polyester plasticizer having a weight average molecular weight (M.sub.w) as tested by SEC of no greater than 10,000 Da.

The invention includes a hot melt adhesive composition including from 15% by weight to 60% by weight of polyester polymer selected from a group consisting of poly lactic acid based polymer (PLA) and polyhydroxy alkanoate (PHA) based polymer and greater than 30% by weight to 85% by weight, greater than 40% by weight to 85% by weight, or even greater than 50% by weight to 85% by weight of a polyester plasticizer having a weight average molecular weight (M.sub.w) as tested by SEC of no greater than 10,000 Da.

The present invention relates to a biodegradable plastic polyhydroxyalkanoate (PHA) composition having improved adhesive properties and mechanical properties, and a method for manufacturing same. Specifically, according to the present invention, it is possible to provide a composition having excellent adhesive properties with respect to a plastic material by improving the adhesive properties by means of a single component of biodegradable PHA without requiring additional chemical substances. In addition, it is possible to provide a composition of which mechanical properties as well as adhesive properties are improved. Therefore, it is possible to manufacture products which are eco-friendly and harmless to the human body, by easily applying the composition to products requiring biodegradable properties along with adhesive properties and mechanical properties.

The present invention relates to a biodegradable plastic polyhydroxyalkanoate (PHA) composition having improved adhesive properties and mechanical properties, and a method for manufacturing same. Specifically, according to the present invention, it is possible to provide a composition having excellent adhesive properties with respect to a plastic material by improving the adhesive properties by means of a single component of biodegradable PHA without requiring additional chemical substances. In addition, it is possible to provide a composition of which mechanical properties as well as adhesive properties are improved. Therefore, it is possible to manufacture products which are eco-friendly and harmless to the human body, by easily applying the composition to products requiring biodegradable properties along with adhesive properties and mechanical properties.

The invention relates to a process for producing a polyester by reacting a H-functional starter substance with a lactone in the presence of a catalyst, wherein the H-functional compound has one or more free carboxyl groups, wherein the lactone is a four-membered ring lactone, and wherein the catalyst is a Brönsted acid or a double metal cyanide (DMC) catalyst. The invention also relates to the polyester that can be obtained by the present invention.

The invention relates to a process for producing a polyester by reacting a H-functional starter substance with a lactone in the presence of a catalyst, wherein the H-functional compound has one or more free carboxyl groups, wherein the lactone is a four-membered ring lactone, and wherein the catalyst is a Brönsted acid or a double metal cyanide (DMC) catalyst. The invention also relates to the polyester that can be obtained by the present invention.