Provided herein according to some embodiments is a dual cure additive manufacturing resin, comprising: (i) a light polymerizable component, (ii) a photoinitiator, (iii) a heat polymerizable component, and (iv) a non-reactive diluent, which resin is useful for the production of three-dimensional objects by additive manufacturing. Methods of using the same are also provided.

Disclosed are hydrogel compositions that can be used to deliver therapeutic agents, including therapeutic proteins, to patients in need thereof. In an embodiment, the therapeutic agent is an immune checkpoint blockade antibody, and the hydrogel is a thermoresponsive polymer crosslinked with a hydrophilic polymer.

The invention relates to a branched copolymer containing rigid blocks and flexible blocks, wherein the branchings are made by a polyol residue binding rigid blocks of the copolymer, said polyol being a polyol comprising at least three hydroxyl groups, said copolymer having a weight-average molar mass Mw of greater than or equal to 80 000 g/mol, and wherein the ratio of the weight-average molar mass Mw of the copolymer to the number-average molar mass Mn of the copolymer is greater than or equal to 2.2.

The invention also relates to a process for manufacturing such a copolymer and also to a foam of such a copolymer, to a process for manufacturing such a foam and articles made from such a foam.

The present disclosure provides a method for preparing a hydrogel composition with thermos-sensitive and ionic reversible properties and the hydrogel composition prepared by the method. Related application products of the hydrogel composition of the present disclosure include wound dressings, drug carriers, three-dimensional cellular scaffolds, soluble microspheres, and cell capture and release systems, wherein the hydrogel composition with thermos-sensitive and ionic reversible properties has good in vitro and in vivo stability and high biocompatibility, and is non-toxic. The hydrogel composition can be removed and replaced by washing with metal chelating aqueous solution at low temperature.

A keyboard having a total recycled and renewable content of equal to or greater than 35 wt. %, based on the total weight of the keyboard is described. The keyboard contains a key cap containing a mechanically recycled polycarbonate polymer or a chemically recycled cellulose based polymer, a pair of cross arms forming a scissor-shaped structure containing a polymeric composition containing 60 wt. % to 100 wt. % of a polyoxymethylene polymer, and 0 wt. % to 40 wt. % of a filler containing glass, and a back light module containing a renewably source polycarbonate polymer or a chemically recycled polyester polymer.

The present disclosure discloses a starch-based fluffy particle, a preparation method and use thereof. The preparation method of the starch-based fluffy particle comprises the following steps of: (1) adding water into starch or modified starch for gelatinization to obtain a starch paste; (2) adding the starch paste into a polar organic solvent, stirring, standing and centrifuging to collecting a precipitate; and (3) freeze-drying, crushing and sieving the precipitate in sequence to prepare the starch-based fluffy particle. The starch-based fluffy particles are porous and fluffy with a large pore size, have excellent water absorption speed, water absorption rate and degradation rate, and can achieve the purpose of rapid and efficient hemostasis. Moreover, the starch-based fluffy particles are free of dispersing agent, emulsifying agent or cross-linking agent, have the characteristics of safety and reliability, and can meet the hemostatic requirement of in-vivo environment.

A color conversion film and a manufacturing method thereof are provided. The manufacturing method includes following steps: forming a composite solution comprising of a first type polymer, a second type polymer, a color conversion material, and a first solvent into a film, wherein the first type polymer is selected from a group consisting of water-soluble polymers and oil-soluble polymers, and the second type polymer is selected from another group consisting of water-soluble polymers and oil-soluble polymers; and immersing the film in a second solvent to remove the second type polymer.

The present invention relates to a non-crosslinked block copolymer foam composition, characterised in that it is in the form of a polymer matrix comprising closed cells containing gas, said matrix comprising: from 90 to 99.9% by weight of said block copolymer; and from 0.01 to 10% by weight of metal carbonate, for the total weight of the foam composition. The present invention also relates to a foamable composition and a method for manufacturing said foam, as well as the use of the foam in sports shoe soles, balloons or balls, gloves, personal protection equipment, rail soles, automobile parts, construction parts, electrical and electronic equipment parts, audio equipment, sound- and/or heat-proofing, and parts used to damp vibrations.

Disclosed are latexes, suspensions, and colloids having a cationic antimicrobial compound complexed with an anionic surfactant. The surfactant may have greater affinity for the antimicrobial compound than other anionic surfactants and other anions in the latex, suspension, or colloid that contribute to disperse phase stability to prevent disrupting the dispersions. Dispersions containing the antimicrobial compound may therefore have a shelf life comparable to dispersions that are otherwise identical but lack the cationic antimicrobial compound and its complexed anionic surfactant. Coatings made with the complexes can exhibit essentially undiminished antimicrobial activity.

A preparation method of calcium peroxide-mediated in situ crosslinkable hydrogel as a sustained oxygen-generating matrix, includes: a) reacting a natural or a synthetic polymer with Traut's reagent (TR) in a solvent, and synthesizing a polymer derivative having thiol group in backbone of the polymer derivative; and b) mixing and reacting a solution of the polymer derivative having thiol group with calcium peroxide (CaO.sub.2), and thereby forming a hydrogel, wherein in the step b), disulfide bonds (—S—S) are induced between backbones of the polymer derivative having thiol group attached by decomposition of calcium peroxide (CaO.sub.2), and thereby in situ crosslinking is formed.