The present invention relates to a thermoplastic resin composition and a molded product using same, the thermoplastic resin composition comprising, based on 100 parts by weight of a base resin including (A) 50 to 80 wt % of a polyamide resin and (B) 20 to 50 wt % of a fiber reinforcement, and (C) 2 to 20 parts by weight of a block copolymer including a polyether segment and a polyamide segment.

The present application relates to polymer compositions that provide barrier properties to oxygen, water vapor and/or hydrocarbons, to polymer film or sheet comprising the polymer composition and to their use in the manufacture or preparation of plastic material and/or plastic packaging. The present application also relates to a method of reducing oxygen water vapor and/or hydrocarbons permeability in plastic material and/or plastic packaging.

A process of preparing carbon fiber reinforced polymer (CFRP) intermediate products is described wherein the carbon fibers are prepared from a carbon fiber precursor and then in-line impregnated with a polymeric resin as part of a continuous process. The process can provide cost savings compared to processes wherein carbon fibers are prepared and then impregnated with polymeric resins in a separate process, thereby making the use of CFRP materials more economically feasible. Also described is a system for preparing carbon fiber from a carbon fiber precursor and impregnating the carbon fiber with polymeric resin to provide CFRP intermediate products, such as continuous tapes or rods or discontinuous flakes or pellets.

The present invention relates to a powder of spherical crosslinkable polyamide particles, which is suitable for the selective laser sintering (SLS) technique, and also to a process for obtaining such a powder of spherical crosslinkable polyamide particles. The present invention also relates to the production of articles by SLS, followed by a crosslinking step, using said powder of spherical crosslinkable polyamide particles.

A polymer composition can be used for selective absorbing sintering, SAS, or selective inhibition sintering, SIS. The polymer has open mesopores and the cumulative pore volume distribution of the mesopores, measured to DIN 66134, is at least 0.01 cm.sup.3/g.

A braided thermoplastic ribbon is disclosed having fully impregnated filaments. The ribbon is formed by a thermoplastic prepreg having a plurality of continuous fibers that are substantially oriented in a longitudinal direction, the continuous fibers constituting from about 30 wt. % to about 40 wt. % of the prepreg, a first resinous matrix that contains a first set of one or more thermoplastic polymers and within which the continuous fibers are embedded, wherein the thermoplastic polymers constitute from about 30 wt. % to about 40 wt. % of the prepreg, and a second resinous matrix that contains a second set of one or more thermoplastic polymers, wherein the second set of thermoplastic polymers constitute from about 30 wt. % to about 40 wt. % of the prepreg.

Provided is a glass fiber-reinforced resin molded article with high mechanical strength and in which occurrence of undispersion of glass fiber is suppressed. In the glass fiber-reinforced resin molded article, glass fiber includes a flat cross-sectional shape having a minor axis D1 in the range of 3.0 μm or more and 10.5 μm or less and a major axis D2 in the range of 11.0 μm or more and 29.0 μm or less, the number average fiber length L (μm) of the glass fiber included in the glass fiber-reinforced resin molded article is in the range of 195 μm or more and less than 400 μm, the glass fiber content C (wt %) in the glass fiber-reinforced resin molded article is in the range of more than 50.0 wt % and 80.0 wt % or less, and the D1, D2, L, and C satisfy the following formula (1):

1200.0≤C×L.sup.2/(D1×D2.sup.2)≤2550.0   (1).

A method for producing a modifier for preparing a composite material based on a thermoplastic polymer where the thermoplastic polymer is mixed with a solvent and salts of alkali metals with the following ratio of components (wt. %): thermoplastic polymer—3-15, solvent—70-94, salts of alkali metals—3-15, until the polymer is fully dissolved, and then carbon nanotubes are added to the mixture in an amount up to 5 wt. % while stirring to produce a dispersion, then a coagulant is added to the dispersion under continuous stirring, the resulting dispersion is then filtered, and the filter cake is rinsed and dried up. The solvent is selected from the group of: alcohol, or N-methylpyrrolidone, or dimethylacetamide. The alkali metal salt is lithium chloride or calcium chloride. The carbon nanotubes are single-wall carbon nanotubes.

Described herein is a method for producing an intrinsically foamed polyamide and a shaped article including the intrinsically foamed polyamide.

Disclosed is a thermoplastic resin composition designed to, even when containing a filler, reduce a trade-off between stiffness and impact resistance to achieve a balance between impact resistance and stiffness, a method for producing the same, and a molded body. The thermoplastic resin composition is obtained by blending a polyolefin resin, a polyamide resin containing an inorganic filler, and a modified elastomer having a reactive group that reacts with the polyamide resin, wherein the polyolefin resin has a number-average molecular weight of 350,000 or more, and the polyamide resin has a structure in which a hydrocarbon group interposed between adjacent amide bonds in a main chain has 5 or less straight chain carbon atoms. The molded body is composed of the thermoplastic resin composition. The method for producing the thermoplastic resin composition includes melt-kneading a polyolefin resin and a melt-kneaded product of a polyamide resin and a modified elastomer.