An ethylene-vinyl alcohol copolymer resin composition, including: an ethylene-vinyl alcohol copolymer (A); acetic acid and/or a salt thereof (B); an aliphatic carboxylic acid (C) other than acetic acid; and an aliphatic carboxylic acid metal salt (D), wherein a metal species of the salt (D) is at least one selected from long Periodic Table 4th-period d-block elements, and wherein respective contents of the acetic acid and/or the salt thereof (B), the acid (C), and the salt (D) satisfy the following formulae (1) and (2) on a weight basis is provided. The resin composition is excellent in impact resistance and adhesive strength even without being blended with any other resin:
0.001≤(content of (D) in terms of metal ion/content of (B) in terms of acetic acid ion)≤1.30  (1)
0.11≤(content of (D) in terms of metal ion/content of (C) in terms of carboxylic acid ion)≤100  (2).

A reinforced flame retardant composition comprising: 30-80 wt % of a polymer component comprising 25-65 wt % of a poly(alkylene terephthalate); 5-25 wt % of a poly(phenylene ether); optionally, 5-35 wt % of a polyamide; 5-30 wt % of a reinforcing mineral filler, preferably talc, 5-35 wt % of glass fibers; 4-25 wt % of a flame retardant component comprising: a metal di(C.sub.1-6alkyl)phosphinate and an auxiliary flame retardant; 0.01-2 wt % of a compatibilizing agent; 5-15 wt % of an impact modifier; wherein a molded sample of the composition has a UL94 rating of V0 at thicknesses of 1.5 mm and lower; and a comparative tracking index of 250-399 volts, preferably 400-599 volts, more preferably 600 volts or greater as determined in accordance with UL 746A, a mean time of arc resistance of at least 120 seconds as determined according to ASTM D495, or a combination thereof.

A reinforced flame retardant composition comprising: 30-80 wt % of a polymer component comprising 25-65 wt % of a poly(alkylene terephthalate); 5-25 wt % of a poly(phenylene ether); optionally, 5-35 wt % of a polyamide; 5-30 wt % of a reinforcing mineral filler, preferably talc, 5-35 wt % of glass fibers; 4-25 wt % of a flame retardant component comprising: a metal di(C.sub.1-6alkyl)phosphinate and an auxiliary flame retardant; 0.01-2 wt % of a compatibilizing agent; 5-15 wt % of an impact modifier; wherein a molded sample of the composition has a UL94 rating of V0 at thicknesses of 1.5 mm and lower; and a comparative tracking index of 250-399 volts, preferably 400-599 volts, more preferably 600 volts or greater as determined in accordance with UL 746A, a mean time of arc resistance of at least 120 seconds as determined according to ASTM D495, or a combination thereof.

A fiber-reinforced resin molding material includes at least components (A) to (D), wherein the fiber-reinforced resin molding material has a weight loss on heating, when heated at 300° C. for 10 minutes either in a nitrogen atmosphere or in an air atmosphere, of 1.5% or less, and components (A) to (D) are:

(A) an amorphous thermoplastic resin: 100 parts by weight
(B) a reinforcement fiber: 4 to 60 parts by weight
(C) a phosphorus-based flame retardant: 20 to 60 parts by weight
(D) an antioxidant (D): 1.0% by weight or more.

A fiber-reinforced resin molding material includes at least components (A) to (D), wherein the fiber-reinforced resin molding material has a weight loss on heating, when heated at 300° C. for 10 minutes either in a nitrogen atmosphere or in an air atmosphere, of 1.5% or less, and components (A) to (D) are:

(A) an amorphous thermoplastic resin: 100 parts by weight
(B) a reinforcement fiber: 4 to 60 parts by weight
(C) a phosphorus-based flame retardant: 20 to 60 parts by weight
(D) an antioxidant (D): 1.0% by weight or more.

Halogen-free, flame resistant and hydrolysis resistant polymer compositions are disclosed. The polymer composition of the present disclosure is also formulated to have improved electrical tracking resistance. The polymer composition contains a thermoplastic polymer, such as polybutylene terephthalate. The thermoplastic polymer is combined with a flame retardant that can include a phosphinate optionally in combination with a phosphite and/or a nitrogen-containing synergist. In order to improve electrical tracking resistance, one or more electrical resistance agents are added to the polymer composition. The electrical resistance agent, for instance, can be a flexible polymer.

Halogen-free, flame resistant and hydrolysis resistant polymer compositions are disclosed. The polymer composition of the present disclosure is also formulated to have improved electrical tracking resistance. The polymer composition contains a thermoplastic polymer, such as polybutylene terephthalate. The thermoplastic polymer is combined with a flame retardant that can include a phosphinate optionally in combination with a phosphite and/or a nitrogen-containing synergist. In order to improve electrical tracking resistance, one or more electrical resistance agents are added to the polymer composition. The electrical resistance agent, for instance, can be a flexible polymer.

A composition including a compatibilized blend of polyamide, polyphenylene ether and a flameproofing agent that synergistically interact such that plaques produced from the composition pass a glow wire ignition temperature test (GWIT) without producing a flame. Advantageously, the flameproofing agent is non-halogenated and the compositions also free of other halogen containing components. In addition, the compositions are free of fillers and are unexpectedly still able to pass the noted tests.

A composition including a compatibilized blend of polyamide, polyphenylene ether and a flameproofing agent that synergistically interact such that plaques produced from the composition pass a glow wire ignition temperature test (GWIT) without producing a flame. Advantageously, the flameproofing agent is non-halogenated and the compositions also free of other halogen containing components. In addition, the compositions are free of fillers and are unexpectedly still able to pass the noted tests.

The present application relates to a composition, which comprises: (a) a photopolymerizable substance; (b) a thiol; (c) a photoinitiator; (d) a thermosensitive polymer; and (e) water, and can be used as a bio-ink for preparing a bio-hydrogel for direct-writing 3D printing. The present invention further relates to a method for preparing the composition, and a direct-writing 3D printing method using the composition.