A redispersible polymer powder composition includes at least one solvent selected from a process oil and an organic solvent, and a vinylacetate-ethylene (VAE)-based redispersible polymer powder pre-swelled by the solvent. The swelling ratio of the vinylacetate-ethylene (VAE)-based redispersible polymer powder exceeds 55%, measured by the equation swelling ratio (%)=[(B−A)/A]×100, where A is the initial mass of the vinylacetate-ethylene (VAE)-based redispersible polymer powder before adding the solvent, and B is the swelled mass of the vinylacetate-ethylene (VAE)-based redispersible polymer powder after adding the solvent and stirring at 300 rpm at room temperature (20° C.) for 30 minutes provided that the mixing ratio of the vinylacetate-ethylene (VAE)-based redispersible polymer powder and the solvent is 1:1 by weight.

The present invention relates to a polymer-graphene composite, in which a polymer has been introduced onto the surface of graphene while maintaining the structural features and mechanical properties of the graphene, thereby realizing an excellent dispersibility in an organic solvent, a method for preparing the same, and a polymer-graphene composite composition using the same.

The present invention relates to a polymer-graphene composite, in which a polymer has been introduced onto the surface of graphene while maintaining the structural features and mechanical properties of the graphene, thereby realizing an excellent dispersibility in an organic solvent, a method for preparing the same, and a polymer-graphene composite composition using the same.

An object of the present invention is to provide a macromolecular material that exhibits excellent elongation. The first macromolecular material of the present invention contains the first polymer containing the first structural unit and the second polymer containing the second structural unit. The first structural unit has a guest group in its side chain, and the second structural unit has a host group in its side chain. At least one of the first and the second polymers contains at least one fluorine group. The second macromolecular material of the present invention contains the first structural unit having a guest group in its side chain, the second structural unit having a host group in its side chain, and the third structural unit other than the first and second structural units. At least one of the first, the second, and the third structural units contains at least one fluorine group.

An object of the present invention is to provide a macromolecular material that exhibits excellent elongation. The first macromolecular material of the present invention contains the first polymer containing the first structural unit and the second polymer containing the second structural unit. The first structural unit has a guest group in its side chain, and the second structural unit has a host group in its side chain. At least one of the first and the second polymers contains at least one fluorine group. The second macromolecular material of the present invention contains the first structural unit having a guest group in its side chain, the second structural unit having a host group in its side chain, and the third structural unit other than the first and second structural units. At least one of the first, the second, and the third structural units contains at least one fluorine group.

The disclosure provides a nanodispersion of cellulose nanocrystals (CNCs) in monoethylene glycol (MEG) as well as a method for dispersing CNCs in MEG and a process for preparing a polymer composites comprising a CNC nanodispersion in MEG comprising copolymerizing said nanodispersion of CNCs and at least one monomer polymerizable with said MEG and/or CNCs.

The invention relates to a composition comprising a rubber-modified monovinylaromatic polymer comprising: 70 wt % or more of a monovinylaromatic polymer matrix, from 2 to 12 wt % of at least one rubber, and from 0.1 to 3.4 wt % of metallocene-catalyzed poly-alpha-olefins (mPAO)
all based on the total weight of the rubber-modified monovinylaromatic polymer, with the mPAO having a kinematic viscosity of at least 950 mm.sup.2/s at 40° C. and at most 2,000 mm.sup.2/s at 40° C. as measured according to ISO 3104. The invention also relates to articles made from such composition and to the process to produce said composition and said articles.

A method of preparing thermoplastic polyester elastomer membrane with high binding strength includes the following steps: (a) Adding a reaction solvent to 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 including 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) Obtaining a finished product by passing the second mixture through an injection laminating process.

Ways of preparing a partially crystalline polycarbonate powder are provided that include dissolving an amorphous polycarbonate in a polar aprotic solvent to form a first solution of solubilized polycarbonate at a first temperature. The first solution is then cooled to a second temperature, the second temperature being lower than the first temperature, where a portion of the solubilized polycarbonate precipitates from the first solution to form a second solution including the partially crystalline polycarbonate powder. Certain partially crystalline polycarbonate powders resulting from such methods are particularly useful in additive manufacturing processes, including powder bed fusion processes.

A method of preparing polymer particles includes combining a polyetherimide and a solvent at a first temperature to provide a slurry, wherein the polyetherimide is not soluble in the solvent at the first temperature; heating the slurry to a second temperature and at a pressure effective to dissolve the polyetherimide in the solvent to provide a homogenous solution; cooling the homogenous solution to a third temperature to provide a dispersion including a plurality of polymer particles; and isolating the polymer particles. The polymer particles have a Dv90 particle size of less than or equal to 250 micrometers. Polymers powders prepared according to the method are also described herein, wherein the powder includes a plurality of semi-crystalline polymer particles having a Dv90 of less than or equal to 250 micrometers.