Garment incorporating waterproof or water resilient aqueous polyurethane dispersions and/or having altered stress profile
Articles, such as garments, including films comprising dried aqueous polyurethane dispersions are disclosed, whereby the garment has an altered stress which is exhibited during wear of the garment and/or has one or more sections of waterproof or water-resilient fabric. The film may be bonded to the fabric of the article to provide a fabric or film laminate.
1. An article comprising one or more sections of waterproof or water-resilient fabric, wherein each waterproof or water-resilient section comprises a film of dried aqueous polyurethane dispersion comprising a water-repellant and a prepolymer, the prepolymer comprising:
a glycol,
an aliphatic diisocyanate and
a diol,
wherein a ratio of isocyanate groups in the aliphatic diisocyanate to hydroxy groups in the glycol and the diol (NCO/OH) is about 1.30 to about 2.20 and wherein a concentration range of carboxylic acid groups in milliequivalent per kg of prepolymer (Meq Acid/kg CG) is about 140 to about 250.
2. The article of claim 1 , wherein less than 10% of the aqueous polyurethane dispersion is comprised of the water-repellant.
3. The article of claim 1 wherein the water repellant is non-fluorinated.
4. The article of claim 1 wherein the water repellant is fluorinated.
5. The article of claim 1 , wherein the aliphatic diisocyanate is 4,4′-methylene bis (cyclohexyl isocyanate).
6. The article of claim 1 , wherein the glycol is a poly(tetramethylene ether) glycol.
7. The article of claim 1 , wherein the diol is DMPA.
8. The article of claim 1 , wherein the prepolymer further comprises a monofunctional alcohol.
9. The article of claim 8 , wherein the monofunctional alcohol is 1-hexanol.
10. The article of claim 1 , wherein the aqueous polyurethane dispersion further comprises a cross-linking agent.
11. The article of claim 1 , wherein the aqueous polyurethane dispersion further comprises a pigment.