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%.

A resin composition may include: an ethylene-vinyl acetate copolymer (A); and a propylene-based resin (B). The melt flow rate (MFR: 190° C., 2.16 kg) MFR (A) of the ethylene-vinyl acetate copolymer (A) and the melt flow rate (MFR: 190° C., 2.16 kg) MFR (B) of the propylene-based resin (B) may satisfy relational expression (i)

4 g/10 min≤MFR(A)−MFR(B)≤35 g/10 min  (i).

The resin composition may have an endothermic peak at 120 to 170° C. in differential scanning calorimetry and a heat of fusion in a range of from 15 to 40 mJ/mg at 120 to 170° C.:

A flame-retardant three-dimension-molded object and a manufacturing method thereof are disclosed. The manufacturing method includes steps of: (a) providing a molded body including plural first pores and plural second pores, wherein the plural first pores communicate inward from an outer surface of the molded body, the first pores and the second pores are partially connected to each other, and a first average pore width of the first pores is greater than a second average pore width of the second pores; (b) immersing the molded body in a flame-retardant solution composed of a flame retardant and a solvent for an immersion time under a negative pressure, so that the flame-retardant solution is introduced into the plural first pores and the plural of second pores; and (c) removing the solvent contained in the plurality of first pores and the plurality of second pores, so as to obtain the flame-retardant three-dimensional-molded object.

An object of the present invention is to provide an antistatic agent which imparts excellent antistatic properties to thermoplastic resins. The antistatic agent (Z) of the present invention contains a block polymer (A) having a block of a polyamide (a) and a block of a polyether (b1) as structure units, wherein the polyether (b1) contains propylene oxide (PO) and ethylene oxide (EO) as constituent monomers, and a weight ratio of the propylene oxide (PO) to the ethylene oxide (EO), i.e., propylene oxide (PO)/ethylene oxide (EO), is 1/99 to 25/75.

Fiber-reinforced composite materials include a matrix of a thermoplastic polyamide resin, at least 3 weight% of at least one impact modifier, and 7-60 wt% fiber reinforcing agent of discontinuous meta-aramid fibers. The composite material is melt processable, and is impact resistant as measured by an unnotched Izod test method according to ASTM D4812 having a value of at least 12 ft-lbs/in (640 J/m). The composite materials can be used to prepare articles such as safety articles.

Additive manufacturing processes featuring consolidation of thermoplastic particulates may form printed objects in a range of shapes. Inorganic nanoparticles disposed upon the outer surface of the thermoplastic particulates may improve flow performance of the thermoplastic particulates during additive manufacturing, but may be undesirable to incorporate in some printed objects. Polymer nanoparticles may be substituted for inorganic nanoparticles in some instances to address this difficulty and provide other advantages. Particulate compositions suitable for additive manufacturing may comprise: a plurality of thermoplastic particulates comprising a thermoplastic polymer and a plurality of polymer nanoparticles disposed upon an outer surface of the thermoplastic particulates, the polymer nanoparticles comprising a crosslinked fluorinated polymer.

Provided are a dispersion composition in which a resin having carboxyl groups is dispersed, and which is a resin aqueous dispersion composition having a relatively high resin concentration but a relatively low viscosity, and a method for producing the same.

Thermoplastic molding compositions containing A) from 30 to 97% by weight of at least one polyamide, B) from 1 to 20% by weight of a melamine compound, C) from 1 to 50% by weight of a mineral filler composed of a mixture of (crypto)crystalline silica (C1) and amorphous silica (C2) and of calcined kaolin (C3), D) from 0 to 20% by weight of a fibrous filler, E) from 0 to 25% by weight of talc powder, F) from 0 to 15% by weight of other additives, where the total of the percentages by weight of A) to F) is 100%.

A method for producing highly spherical polymer particles comprising a polyamide having an optical absorber pendent from a backbone of the polyamide (OAMB-polyamide) may comprise: mixing a mixture comprising the OAMB-polyamide, a carrier fluid that is immiscible with the OAMB-polyamide, and optionally an emulsion stabilizer at a temperature greater than a melting point or softening temperature of the OAMB-polyamide and at a shear rate sufficiently high to disperse the OAMB-polyamide in the carrier fluid; and cooling the mixture to below the melting point or softening temperature of the OAMB-polyamide to form particles comprising the OAMB-polyamide and the emulsion stabilizer, when present, associated with an outer surface of the particles.

A thermoplastic prepreg includes a mat, web, or fabric of fibers and hollow glass microspheres that are positioned atop the mat, web, or fabric of fibers or dispersed therein. The thermoplastic prepreg also includes a thermoplastic polymer that is fully impregnated through the mat, web, or fabric of fibers and the hollow glass microspheres so that the thermoplastic prepreg has a void content of less than 3% by volume of the thermoplastic prepreg. The thermoplastic material is polymerized monomers and oligomers in which greater than 90% by weight of the monomers or oligomers react to form the thermoplastic material.