The present invention relates to a polymer film (P), comprising at least one copolyamide, wherein the copolyamide has been prepared by polymerizing at least one lactam (A) and a monomer mixture (M). The present invention further relates to a process for producing the polymer film (P) and to the use of the polymer film (P) as packaging film.

Rheology modifiers comprising cross-linked poly(amino acid) and methods of their use in aqueous compositions. The modifiers comprise cross-linked poly(amino acid) microparticles having a mean equivalent diameter when fully swollen in deionized water of up to 1000 m, as measured by laser diffraction. In particular, the poly(amino acid) is D-, L- or D,L-Y-poly(glutamic acid). A method of preparing the modifier comprises cross-linking a poly(amino acid), drying the cross-linked poly(amino acid) and grinding the cross-linked poly(amino acid) to have the required diameter.

Disclosed is a polymer (P) in the form of a pulverulent solid consisting of monomeric units derived from partially or totally solidified glutamic acid (GA), and monomer units of at least one crosslinking agent (AR) having at least two glycidyl functions.

The present invention relates to a sizing agent for carbon fibers, a carbon fiber with improved interfacial adhesion, a polymerization reaction type carbon fiber-reinforced polymer composite material using the same, and a production method therefor and, more specifically, to a sizing agent for carbon fibers, comprising a phenoxy resin and a block isocyanate compound prepared through a reaction of -caprolactam with one of two isocyanate groups of a diisocyanate compound, and the production of a carbon fiber with improved interfacial adhesion using the same, a polymerization reaction type carbon fiber-reinforced polymer composite material using the carbon fiber with improved interfacial adhesion, and a production method therefor.

A fiber-reinforced thermoplastic-resin base includes continuous reinforcing fibers aligned in parallel to each other and a thermoplastic resin is impregnated thereinto, wherein the base has a fiber volume content of 40-65 vol % and a dispersion parameter D of the fibers, determined by (i)-(iv), of 90% or more: (i) a cross-section of the fiber-reinforced thermoplastic-resin base that is perpendicular to the alignment direction of the reinforcing fibers is divided into a plurality of sections, and one of the sections is photographed, (ii) the photograph image of the section is divided into a plurality of square units each having a one-side length t, (iii) a dispersion parameter d is calculated, (iv) with respect to other sections, (i) to (iii) are repeatedly performed, and an average value of dispersion parameters d of the plurality of sections is dispersion parameter D.

The objective of the present invention is to provide a prepreg and a fiber reinforced composite material using this prepreg. This prepreg has good handleability, is suitable for producing a reinforced composite material in a short-time and without using an autoclave, and is capable of yielding a fiber reinforced composite material exhibiting excellent impact resistance, wherein the occurrence of voids has been suppressed. To attain the objective, this prepreg comprises a reinforced fiber [A] that is layered and partially impregnated with an epoxy resin composition containing an epoxy resin [B] and a hardener [C], the impregnation rate being 30 to 95%. In this prepreg, a thermoplastic resin [D] insoluble in the epoxy resin [B] is distributed unevenly over a surface on one side of the prepreg, and a portion not impregnated with the epoxy resin composition is localized in the layer of the reinforced fiber [A] on the side where the thermoplastic resin [D] is distributed unevenly. This prepreg has a localization parameter , which defines the degree of the localization to be in the range of 0.10<<0.45.

The present invention relates to processes and systems for preparing nanoparticles, cellular or viral membranes and/or cellular or viral membrane coated nanoparticles using or comprising, inter alia, a multi-inlet vortexing reactor, tangential flow filtration (TFF) and/or a high shear fluid processor such as a microfluidizer (or a microfluidizer processor). The present invention also relates to the nanoparticles, cellular or viral membranes and/or cellular or viral membrane coated nanoparticles prepared by the present processes and systems, and the uses and/or applications of the nanoparticles, cellular or viral membranes and/or cellular or viral membrane coated nanoparticles.

A process for the production of a masterbatch (M) which includes at least one lactam and at least one fiber material is provided herein. Also described herein is the masterbatch (M) and a polymerizable two-component system (pS), as well as to a process for the production of a polyamide (P), the use of the masterbatch (M) for the production of the polyamide (P), and the polyamide (P). A molding made of the polyamide (P) is also described.

A pharmaceutical composition (F) comprising at least one pharmaceutical active principle and as thickener a composition (C.sub.A) in the form of an emulsion of the self-invertible water-in-oil type comprising, per 100% of its mass, a mass content of greater than or equal to 20% of a polymer (P) consisting of monomer units derived from partially or totally salified glutamic acid (GA), and of units derived from at least one crosslinking agent (XLA) bearing at least two glycidyl functions.

A method for producing polymeric microparticle compositions using the steps of: 1) melt processing an immiscible polymeric blend comprising an immiscible polymer matrix and a soluble polymer matrix, 2) dissolving the soluble polymer matrix of the immiscible polymeric blend using a solvent to yield a polymeric microparticle composition, and 3) isolating the polymeric microparticle composition.