Artificial leather and method of producing the same

Details Artificial leather and method of producing the same Artificial leather and method of producing the same

2006-10-17

2006-10-17

Niland, Patrick D. (Department: 1714)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

C428S423100, C428S221000, C428S295100, C428S297400, C428S319300, C428S319700, C442S043000, C442S058000, C442S095000, C442S102000, C442S119000, C442S154000, C442S155000, C524S591000, C524S839000, C524S840000, C524S457000, C525S063000, C525S069000, C525S123000, C525S127000, C525S455000

Reexamination Certificate

active

07122596

ABSTRACT:
Provided are a leather-like sheet fabricated by infiltrating an aqueous resin dispersion (A) into a fibrous substrate, which satisfies a requirement (I) that the aqueous resin dispersion, (A) comprises essentially a main resin (a) stabilized with a surfactant, a polymer (b) having a polyoxyethylene group in its side chains, and a surfactant (c), a requirement (II) that the main resin (a) comprises an urethane resin (a1) and/or an urethane-acrylic composite resin (a2), and the resin skeleton contains from 1 to 10 mmols of a carboxyl group per 100 g of the resin, a requirement (III) that the polymer (b) is obtained through polymerization of a polyoxyethylene group-having ethylenic unsaturated monomer (b1) and any other ethylenic unsaturated monomer (b2) in a ratio by mass (b1)/(b2)=60/40 to 100/0, and a requirement (IV) that the percentage, % by mass (α) of the polyoxyethylene group in the polymer (b) and the number of mols (β) of the amino group per gram of the polymer (b) satisfy 35≦α+β×20000≦60; and an industrial advantageous method for producing the sheet. The leather-like sheet has a good feel and good physical properties.

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