Abstract: Artificial leather and a dyeing method therefor; the leather includes ultrafine polyamide fibers and is particularly a grained artificial leather having bright, deep color, good color fastness to dry cleaning with charged soap, a delicate touch free from any undesirable rubber-like feeling, as well as high durability.A super-entangled fiber base is provided comprising ultrafine polyamide fibers and/or bundles thereof; polyurethane including polyoxyethylene of molecular weight of 500-5,000 is applied. The polyamide ultrafine fibers are dyed with a metal-dye complex and a fixing agent.

Abstract: Artificial leather and a dyeing method therefor; the leather includes ultrafine polyamide fibers and is particularly a grained artificial leather having bright, deep color, good color fastness to dry cleaning with charged soap, a delicate touch free from any undesirable rubber-like feeling, as well as high durability.A super-entangled fiber base is provided comprising ultrafine polyamide fibers and/or bundles thereof; polyurethane including polyoxyethylene of molecular weight of 500-5,000 is applied. The polyamide ultrafine fibers are dyed with a metal-dye complex and a fixing agent.

Abstract: A method of treating a synthetic fiber-containing knitted or woven fabric, wherein a synthetic fiber fabric or a blended fabric of synthetic and other fibers is treated with an aqueous mixture of a hydrophilic and thermally reactive urethane prepolymer with its terminal isocyanate groups blocked and (an) organopolysiloxane. This treatment is good for imparting to thermoplastic synthetic fiber goods a durable effect to prevent melting by sliding friction, and, when applied to the treatment of sportswear, it is useful for protecting players from troubles resulting from melting of clothing by friction caused by sliding attempts.