Flame-retardant leather-like sheet and process for producing the same

A method of producing a flame retardant leather-like sheet, comprising successively subjecting a leather-like sheet, which comprises an entangled nonwoven fabric of polyester microfine fibers having an average single-fiber fineness of 0.5 dtex or less and an elastic polymer A impregnated into the nonwoven fabric, to the following steps (1) and (2):

• (1) a step of immersing the leather-like sheet in a bath comprising a flame retardant dispersed or dissolved in hot water at a temperature of 50 to 100° C. to exhaust the flame retardant into the elastic polymer A;
• and
• (2) a step of applying a flame retarder liquid, which contains forcibly formed air bubbles, to a back surface of the leather-like sheet.

A flame retardant leather-like sheet comprising an entangled nonwoven fabric of polyester microfine fibers having an average single-fiber fineness of 0.5 dtex or less, and an elastic polymer A impregnated into the nonwoven fabric, said leather-like sheet being dyed with a disperse dye, wherein a hot water-soluble, phosphorus-based flame retardant is exhausted into at least an inside of the elastic polymer A, wherein a composition comprising an elastic polymer B and a phosphorus-based flame retarder is present in a region extending from a back surface to an inside of the leather-like sheet in the form of particles, aggregates or a mixture of particles and aggregates, in the form of porous bodies or in the form of a mixture of these forms, and wherein neither said phosphorus-based flame retarder nor said elastic polymer B is present on side of a front surface of the leather-like sheet.