Abstract: A low-corrosion fire-resistant thermoplastic resin composition comprising a thermoplastic resin, a phosphinic acid salt flame retardant, a reinforced glass fiber, and a rare earth metal salt corrosion inhibitor. The resin composition improves the corrosion resistance and mechanical performance of the metal to a great extent while maintaining the high flame resistance.

Abstract: A low-corrosion fire-resistant thermoplastic resin composition comprising a thermoplastic resin, a phosphinic acid salt flame retardant, a reinforced glass fiber, and a rare earth metal salt corrosion inhibitor. The resin composition improves the corrosion resistance and mechanical performance of the metal to a great extent while maintaining the high flame resistance.

Abstract: A process for making an alkyl phosphinate polymer having a formula comprising mixing a phosphinic acid or an alkali metal salt of phosphinic acid, a molecular weight modifier, and a polar solvent to form a mixture, adding an alkyne to the mixture, stirring and adding a free radical initiator solution to the mixture, adding the alkyne until saturation, heating and cooling the mixture, and adding to a metallic compound or protonated nitrogen base. The alkyl phosphinate polymer has high heat resistance and is suitable for use in a flame-retardant composition and flame-retardant polymer molding composition.

Abstract: An alkyl phosphinate polymer having a formula R1 is a methyl, ethyl, propyl, isopropyl, n-butyl, isobutyl, tertiary butyl, n-amyl group, isoamyl, n-hexyl, isohexyl, hydroxymethyl, or alkoxy; R2 is a methyl, ethyl, propyl, isopropyl, n-butyl, isobutyl, tertiary butyl, n-amyl group, isoamyl, n-hexyl, isohexyl, hydroxymethyl, or alkoxy; Re is an alkali metal, alkaline earth metal, transition metal, poor metal, metalloid, lanthanide element, or protonated nitrogen base; x=1/m, m is the valence of Re; u is the degree of polymerization in a range of from 1 to 6. Glare use in a flame-retardant composition, and flame-retardant polymer molding composition which comprises the alkyl phosphinate polymer.