Solvent free aqueous polyurethane dispersions and shaped articles therefrom
An article comprising an adhesive, a stretch member and a substrate wherein the adhesive is used to attach the stretch member to the fabric in a folded hem arrangement. The adhesive can be a tape made from an aqueous polyurethane dispersion and the stretch member can be a spandex fiber.
1 . An elastic shaped article made from a substantially solvent-free aqueous polyurethane.
2 . The article of claim 1 having a % of set of from 0 to 10%.
3 . The article of claim 1 having a % of set of from 0 to 5%.
4 . The article of claim 1 having a % of set of from 0 to 3%.
5 . The article of claim 1 wherein the maximum elongation is from 400% to 800%.
6 . The article of claim 1 wherein the tenacity is from 0.5 to 3 Mpa.
7 . A laminate comprising an article and a substrate wherein the peel strength of the laminate does not fall to 50% of original peel strength value according to ASTM D093-93 following 50 washes according to AATCC-150-2001.
8 . A laminate comprising an article and a substrate wherein the moisture vapor transport of the laminate is from 0 to 300 g/m2 over 24 hours according to ASTM E96-00.
9 . A laminate comprising an article and a substrate wherein the air permeability of the laminate is from 0 to 0.5 cfm according to ASTM D737-96.
10 . An article comprising the shaped article of claim 1 and a substrate wherein the shaped article and the substrate are attached to form a laminate whereby the coefficient of friction of the laminate is higher than the coefficient of friction of the substrate.
11 . An article comprising the shaped article of claim 1 wherein the article has a modulus and a length, said modulus varies along the length of the article.
12 . The article of claim 10 wherein said article is a garment.