A copolyester, comprising structural units represented by [I], [II], [III] and [IV]. The number of structural units represented by [III] is 1-99% of the number of structural units represented by [I], and the number of structural units represented by [IV] is 0-99% of the number of structural units represented by [I]. Also provided are a preparation method therefor and an application thereof. Because an introduced high-temperature self-crosslinking group and an ion group can improve the melt viscosity and the melt intensity during burning of a copolyester, and effectively enhance the char-forming capability of the copolyester, the copolyester exhibits excellent flame retardance and anti-dripping performance. The preparation process for the copolyester is mature, convenient to operate, and easy to control and apply to industrial production.

##STR00001## ##STR00002## ##STR00003## ##STR00004## ##STR00005##

The present invention relates to a polyamide resin composition that has excellent mechanical properties and shows excellent results in a UL94 combustion test, and that comprises an aliphatic polyamide (A), a phosphinic acid salt (B) and a phosphazene compound (C), wherein the aliphatic polyamide (A) is contained in an amount of 60 mass % or more and 85 mass % or less in the polyamide resin composition, and the phosphazene compound (C) is contained in an amount of 3 mass % or more and 20 mass % or less in the polyamide resin composition.

The present invention relates to a polyamide resin composition that has excellent mechanical properties and shows excellent results in a UL94 combustion test, and that comprises an aliphatic polyamide (A), a phosphinic acid salt (B) and a phosphazene compound (C), wherein the aliphatic polyamide (A) is contained in an amount of 60 mass % or more and 85 mass % or less in the polyamide resin composition, and the phosphazene compound (C) is contained in an amount of 3 mass % or more and 20 mass % or less in the polyamide resin composition.

The present invention is directed to bioresorbable polymers to be used as bone and tissue adhesives. The present invention is also directed to the synthesis of bioresorbable polymeric molecules bearing adhesive moieties and the use of such compounds in methods to glue and stabilize fractured bones and damaged tissues. The present invention is also directed to the use of such compounds as adhesive sealants for applications in wound care. The present invention is also directed to the use of such compounds as biodegradable ink for applications in tissue engineering and 3D printing. The present invention also relates to the use of such compounds as drug delivery platforms.

Provided are methods of producing sulfur- and phosphorus-containing polymers from beta-lactones. The sulfur- and phosphorus-containing polymers include bio-based sulfur- and phosphorus-containing polymers that may be obtained from renewable sources.

Provided are methods of producing sulfur- and phosphorus-containing polymers from beta-lactones. The sulfur- and phosphorus-containing polymers include bio-based sulfur- and phosphorus-containing polymers that may be obtained from renewable sources.

The present invention relates to the use of polyesters with inherent flame retardancy as or in adhesives, sealants and coatings, to polyesters with inherent flame retardancy and to processes for production thereof.

The present invention relates to the use of polyesters with inherent flame retardancy as or in adhesives, sealants and coatings, to polyesters with inherent flame retardancy and to processes for production thereof.

Coating composition comprising a binder formed from polyester and a phosphorus acid A coating composition comprising a binder, the binder comprising a polyester material, wherein the polyester material comprises the reaction product of; (a) a polyacid, (b) a polyol and (c) a phosphorous acid, wherein the polyester material has a weight-average molecular weight (Mn) from about 1,000 Da to 25,000 Da and the polydispersity index (Mw/Mn) of the polyester material is from about to 10and characterised in that the polyester material is present in said binder composition in amounts of more than about 10 weight percent (wt %). The coating composition is useful for coating food and/or beverage containers.

Disclosed are polymers with a complex branched structure (star- or tree-shaped) obtainable by polymerizing a bifunctional type AB monomer and/or type AA+BB monomers in the presence of: a) one or more polyamine and/or a polyacid and/or a polyalcohol and/or more generally a compound (such as POSS) having at least three functional groups such as amino, carboxylic acid or hydroxyl functions; b) one or more phosphorus containing molecules reacting with only one reactive group during the polymerization; c) optionally one or more organic acid and/or an amine and/or an alcohol having one or two functional groups.