Patent ID: 7018422

Claim:
A formaldehyde-free durable press finished textile having a combined 1,2,3,4-butanetetracarboxylic acid (BTCA) and polymaleate cross-linked finish wherein the BTCA accounts for 0.1–75% of the total cross-linking agent applied to the fabric, and said cross-linked polymaleate is selected from the group having the formula: wherein R is independently H, OH, OM, or a unit having the formula: and mixtures thereof; X is H, OH, or OSO 3 M, M is H, or a salt forming cation, and mixtures thereof; the indices x, y, and z are each independently from 0 to about 7; x+z is greater than or equal to 1, Q is H, OH, OM but not H when both x and z are greater than or equal to 1 and wherein said textile has a durable press rating of at least about 3.0 and a tensile strength retention of greater than 40%.