A water dispersible sulfopolymer for use as a material in the layer-wise additive manufacture of a 3D part made of a non water dispersible polymer wherein the water dispersible polymer is a reaction product of a metal sulfo monomer, the water dispersible sulfo-polymer being dispersible in water resulting in separation of the water dispersible polymer from the 3D part made of the non water dispersible polymer.

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

The invention relates to flame-retardant polyamide compositions with a glow wire ignition temperature of not less than 775° C., comprising polyamide having a melting point of not more than 290° C. as component A, fillers and/or reinforcers as component B, phosphinic salt of the formula (I) as component C

##STR00001## in which R.sub.1 and R.sub.2 are ethyl, M is Al, Fe, TiO.sub.p or Zn, m is 2 to 3, and p=(4−m)/2 compound selected from the group of the Al, Fe, TiO.sub.p and Zn salts of ethylbutylphosphinic acid, of dibutylphosphinic acid, of ethylhexylphosphinic acid, of butylhexylphosphinic acid and/or of dihexylphosphinic acid as component D phosphonic salt of the formula (II) as component E

##STR00002## in which R.sub.3 is ethyl, Met is Al, Fe, TiO.sub.q or Zn, n is 2 to 3, and q=(4−n)/2, and melamine polyphosphate having an average degree of condensation of 2 to 200 as component F.

The polyamide compositions can be used for production of fibers, films and shaped bodies, especially for applications in the electricals and electronics sector.

A sized reinforcing filler, comprising a filler and a sizing agent disposed on at least a portion of the filler, to be used for reinforcement for plastics is disclosed. The sizing agent is based upon at least one of a polyvinyl alcohol, an ethylene/vinyl alcohol copolymer, a silane-grafted polyvinyl alcohol and a silane-grafted ethylene/vinyl alcohol copolymer, a silane-grafted polyvinyl alcohol and a silane-grafted ethylene/vinyl alcohol copolymer. The polyvinyl alcohol is useful as a size for all types of fibers and particles to reinforce all types of commodity and engineering plastics, particularly polyolefin resins, to form polymer composites. As such, polymer composites reinforced with such sized reinforcing fillers, as well as articles, components, and products including such polymers composites, are also disclosed.

The present disclosure relates to glass fiber-filled polyamide compositions. In various aspects, the present disclosure provides a composition including a polyamide having a relative viscosity (RV) of from ≥20 to ≤36. From ≥10 to ≤62 weight percent of the composition is glass fibers blended with the polyamide, based on the weight of the polyamide including the glass fibers. The composition can have a polyamide RV of >22 to <30.2, an elongation-at-break of 4% to 20%, at least 5 wt % of the glass fibers have a length of equal to or greater than 700 microns, or a combination thereof.

A method for forming a graphene-reinforced polymer matrix composite is disclosed. The method includes distributing graphite microparticles into a molten thermoplastic polymer phase; and applying a succession of shear strain events to the molten polymer phase so that the molten polymer phase exfoliates the graphite successively with each event until at least 50% of the graphite is exfoliated to form a distribution in the molten polymer phase of single- and multi-layer graphene nanoparticles less than 50 nanometers thick along the c-axis direction.

A graphene-reinforced polymer matrix composite comprising an essentially uniform distribution in a thermoplastic polymer of about 10% to about 50% of total composite weight of particles selected from graphite microparticles, single-layer graphene nanoparticles, multi-layer graphene nanoparticles, and combinations thereof, where at least 50 wt % of the particles consist of single- and/or multi-layer graphene nanoparticles less than 50 nanometers thick along a c-axis direction. The graphene-reinforced polymer matrix is prepared by a method comprising (a) distributing graphite microparticles into a molten thermoplastic polymer phase comprising one or more matrix polymers; and (b) applying a succession of shear strain events to the molten polymer phase so that the matrix polymers exfoliate the graphite successively with each event until at least 50% of the graphite is exfoliated to form a distribution in the molten polymer phase of single- and multi-layer graphene nanoparticles less than 50 nanometers thick along a c-axis direction.

Provided are a resin composition having excellent oxygen barrier property under high humidity as a novel resin material, a molded body, a method for producing a molded body, and a method for producing a pellet using the resin composition. The resin composition includes a resin component and a plate-shaped talc having an aspect ratio of more than 18, 80 mass % of the resin component comprising a barrier resin having an oxygen transmission coefficient of 5.0 cc.Math.mm/(m.sup.2.Math.day.Math.atm) or less as measured according to ASTM D3985 at a relative humidity of 60% and a temperature of 23° C., and a content of the plate-shaped talc being from 3.0 to 55.0 mass % when a total of the barrier resin and the plate-shaped talc is 100 mass %.

The present disclosure relates to articles for transmitting and/or receiving radio waves therethrough having a frequency in the range of 0.5 GHz to 81 GHz. The recyclable articles include a thermoplastic resin including a polyamide and provide low signal attenuation of the radio waves transmitted or received therethrough. The article can include a colorant dispersed in the thermoplastic resin, wherein the colorant is substantially free of metals and metal-containing compounds; the article can include a paint, ink, or colored coating on an exterior thereof, wherein the paint, ink, and colored coating are substantially free of metals and metal-containing compounds; or a combination thereof.

Described herein are thermoplastic molding materials including components:

A) 10 to 98.5 wt % of a thermoplastic polyamide,
B) 1 to 20 wt % of red phosphorus,
C) 0.5 to 15 wt % of an aluminum salt of phosphonic acid,
D) 0 to 55 wt % of a fibrous or particulate filler or mixtures thereof,
E) 0 to 30 wt % of further additives,
wherein the weight percentages of the components A) to E) sum to 100%.