The present application discloses interlayers comprising novel polyesteramides comprising diols with tunable properties based on the monomers and monomer ratios used to prepare the polyesteramides and varying the reaction conditions. The interlayers have improved properties and can be used in many different applications.

The present application discloses interlayers comprising novel polyesteramides comprising diols with tunable properties based on the monomers and monomer ratios used to prepare the polyesteramides and varying the reaction conditions. The interlayers have improved properties and can be used in many different applications.

Poly(amine-co-ester) polymers, methods of forming active agent-load polyplexes and particles therefrom, and methods of using them for delivery of nucleic acid agents with optimal uptake have been developed. Examples demonstrate critical molecular weights in combination with exposed carboxylic and/or hydroxyl groups, and methods of making. Typically, the compositions are less toxic, more efficient at drug delivery, or a combination thereof compared to a control other transfection reagents. In some embodiments, the compositions are suitable for in vivo delivery, and can be administered systemically to a subject to treat a disease or condition. For poly(amine-co-ester) polymers with specific amine or hydroxyl group containing end-groups in admixture with PEGylated poly(amine-co-ester) polymers, in vivo delivery to the lung by inhalation has been shown.

Disclosed in the present invention is poly(ester amide)s and method for preparing thermoplastic poly(ester amide)s therefor. The poly(ester amide)s are prepared using diamine or alkamine as initiator, with diacid and dialcohol-based cyclicester as the monomer, in the catalyst, and by cascade polycondensation-coupling ring-opening polymerization. The obtained poly(ester amide)s have good mechanical properties, solvent resistance and thermal stability. It effectively solves the deficiencies in the current poly(ester amide)s, such as low crystallization temperature and poor heat resistance of polyester parts, and low modulus and rigidity from polyamides part. For aliphatic poly(ester amide)s, they are biodegradable. By means of altering such factors as the ratio of ester bonds and amide bonds and polymer molecular weight and distribution, the performance of the poly(ester amide)s material can be adjusted, causing the invention to have broad application in such fields as engineering plastics, thermoplastic elastomers, tissue engineering, and controlled release.

Disclosed in the present invention is poly(ester amide)s and method for preparing thermoplastic poly(ester amide)s therefor. The poly(ester amide)s are prepared using diamine or alkamine as initiator, with diacid and dialcohol-based cyclicester as the monomer, in the catalyst, and by cascade polycondensation-coupling ring-opening polymerization. The obtained poly(ester amide)s have good mechanical properties, solvent resistance and thermal stability. It effectively solves the deficiencies in the current poly(ester amide)s, such as low crystallization temperature and poor heat resistance of polyester parts, and low modulus and rigidity from polyamides part. For aliphatic poly(ester amide)s, they are biodegradable. By means of altering such factors as the ratio of ester bonds and amide bonds and polymer molecular weight and distribution, the performance of the poly(ester amide)s material can be adjusted, causing the invention to have broad application in such fields as engineering plastics, thermoplastic elastomers, tissue engineering, and controlled release.

An object of the present invention is to provide an antistatic agent which imparts excellent antistatic properties to thermoplastic resins. The antistatic agent of the present invention contains a block polymer (A) having a block of a polyamide (a) and a block of a hydrophilic polymer (b) as structure units; and an amide-forming monomer (c), wherein a weight ratio of the amide-forming monomer (c) to the block polymer (A), i.e., amide-forming monomer (c)/block polymer (A), is 2/98 to 12/88.

A method of preparing polyester elastomer meltblown nonwoven fabric membrane with porous and high bonding strength includes the following steps of: (a) Adding a reaction solvent to a reaction solvent to thermoplastic polyester elastomer (TPEE) powder or granules to prepare a solvent mixture. (b) Adding a modifier to the solvent mixture, and mixing uniformly to prepare a first mixture, the modifier includes at least one of o-xylylenediamine, m-xylylenediamine, alpha, alpha′-diamino-p-xylene, 2,3,5,6-Tetrachloro-p-xylene-alpha,alpha′-diamine, and 1,3,5,7-Tetraazatricyclodecane. (c) Adding an initiator to the first mixture, and mixing uniformly to prepare a second mixture. (d) Drying the second mixture to form a masterbatch, and (e) preparing the polyester elastomer meltblown nonwoven fabric membrane by passing the masterbatch through a meltblown process.

Polyamide and amidoamine curing agents comprising a selectively modified amine. The selectively modified amine is formed by a substitution reaction between a polyamine and an epoxide, resulting in a multifunctional amine having a hydroxyl substituent. The curing agents are used to form epoxy resins having improved properties when cured.

Disclosed herein are polyesteramide random copolymers having high glass transition temperatures, methods of forming such polymers, devices, formulations, and medical devices containing such polymers, and methods of treating mammals suffering from various conditions using such polymers in combination with a bioactive agent. In an embodiment, the random copolymers may have a Tg above body temperature, about 37° C., and may achieve a longer release duration, different release kinetics, improved barrier properties, or other benefits over polymers with Tg below 37° C.

A medical device capable of transmitting a radiofrequency signal to and/or receiving a radiofrequency signal from an external device is provided. The medical device comprises at least one component that contains a polymer composition that exhibits a dielectric constant of greater than about 6 at a frequency of 2 GHz, wherein the polymer composition includes a liquid crystalline polymer.