Di(amido(alkyl)phenol) compounds and upgraded molecular weight polymers made from such compounds have particular utility in coating compositions, especially for use on food and beverage contact substrates that are formed into or will be formed into containers or container components.

Techniques regarding star polymers with enhanced antimicrobial functionality are provided. For example, a polymer is provided that can comprise a core that can have a singlet oxygen generator and that can generate a singlet oxygen species upon irradiation with light. The polymer can also comprise a plurality of polycarbonate arms covalently bonded to the core. The plurality of polycarbonate arms can be degradable and can comprise a cation. Further, the plurality of polycarbonate arms can have antimicrobial functionality.

Di(amido(alkyl)phenol) compounds and upgraded molecular weight polymers made from such compounds have particular utility in coating compositions, especially for use on food and beverage contact substrates that are formed into or will be formed into containers or container components.

Techniques regarding star polymers with enhanced antimicrobial functionality are provided. For example, a polymer is provided that can comprise a core that can have a singlet oxygen generator and that can generate a singlet oxygen species upon irradiation with light. The polymer can also comprise a plurality of polycarbonate arms covalently bonded to the core. The plurality of polycarbonate arms can be degradable and can comprise a cation. Further, the plurality of polycarbonate arms can have antimicrobial functionality.

The present application relates to a polycarbonate including units represented by Chemical Formula 1a or 1b and Chemical Formula 1c, a composition including the same, and a molded article prepared from the composition.

Techniques regarding star polymers with enhanced antimicrobial functionality are provided. For example, a polymer is provided that can comprise a core that can have a singlet oxygen generator and that can generate a singlet oxygen species upon irradiation with light. The polymer can also comprise a plurality of polycarbonate arms covalently bonded to the core. The plurality of polycarbonate arms can be degradable and can comprise a cation. Further, the plurality of polycarbonate arms can have antimicrobial functionality.

Disclosed is a polycarbonate resin having a constitutional unit represented by Formula (1). The resin provides a molded article having a sufficiently low Abbe number and having high abnormal dispersibility may be molded. Y.sup.1 and Y.sup.2 are an oxygen, sulfur, nitrogen or carbon atom; Z is an atomic group for forming a 5- to 7-membered ring; R.sup.5 to R.sup.8 represent a substituent; and Ar.sup.11 and Ar.sup.12 represent an aryl or heteroaryl group.

##STR00001##

A method for synthesizing cyclic carbonate monomers using carbon dioxide (CO.sub.2) is provided. The method also includes combining reagents to synthesize the cyclic carbonate monomer, the reagents including a substrate that is a 1,X-diol, where X is between 2 and 5, a base that is a tertiary amine, a promoter that is a multidentate, bis-tertiary amine base where nitrogens are separated by 2 to 4 carbon atoms, a solvent, and CO.sub.2.

Provided are a resin comprising a unit of Chemical Formula 1, a method for preparing the same, a resin composition comprising the same, and a molded article comprising the resin composition,

##STR00001## wherein all the variables are described herein.

The invention relates to a multi-layer structure (MA) comprising: (S1) at least one first outer layer (S1) containing a polymer (P1) having a Vicat softening temperature 149 C., preferably 160 C., further preferably 170 C., more preferably 180 C., determined according to ISO 306:2004 (50N; 50 h); (S2) at least one further polymer layer (S2) containing a polymer (P2) having a Vicat softening temperature <149 C., preferably 140 C., more preferably 130 C. determined according to ISO 306:2004 (50N; 50/h), preferably in a range from 120 to 148 C.; (S3) at least one core layer (S3); (S4) at least one further polymer layer (S4) containing a polymer (P2) having a Vicat softening temperature <149 C., preferably 140 C., more preferably 130 C., determined according to ISO 306:2004 (50N; 50 h), preferably in a range of 120 to 148 C.; (S5) at least one second outer layer (S5) containing a polymer (P1) having a Vicat softening temperature 149 C., preferably 160 C., further preferably 170 C., more preferably 180 C., determined according to ISO 306:2004 (50N; 50/h). The invention also relates to a method for manufacturing such a multi-layer structure and to a security document containing same.