Garment incorporating aqueous polyurethane dispersions 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. The film may be bonded to the fabric of the article to provide a fabric or film laminate.
1. An article comprising:
(a) one or more sections of fabric, wherein each section of fabric has a stress profile; and
(b) one or more films adhered to one or more sections of fabric to form a fabric laminate having an altered stress profile,
wherein each film comprises a dried aqueous polyurethane dispersion comprising 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 the aliphatic diisocyanate is 4,4′-methylene bis (cyclohexyl isocyanate).
3. The article of claim 1 , wherein the glycol is a poly(tetramethylene ether) glycol.
4. The article of claim 1 , wherein the dial is DMPA.
5. The article of claim 1 , wherein the ratio of isocyanate groups to hydroxy groups is about 1.40 to about 2.00.
6. The article of claim 1 , wherein the ratio of isocyanate groups to hydroxy groups is about 1.50 to about 1.90.
7. The article of claim 1 , wherein the concentration range of carboxylic acid groups in milliequivalent per kg of prepolymer is about 150 to about 220.
8. The article of claim 1 , wherein the concentration range of carboxylic acid groups in milliequivalent per kg of prepolymer is about 155 to about 220.
9. The article of claim 1 , wherein the prepolymer further comprises a monofunctional alcohol.
10. The article of claim 9 , wherein the monofunctional alcohol is 1-hexanol.
11. The article of claim 1 , wherein article is a body-shaping garment or a performance-enhancing garment.
12. The article of claim 1 , wherein said altered stress profile includes a uniform distribution of stress and/or pressure.
13. The article of claim 1 , wherein said altered stress profile provides a stress and/or pressure gradient to provide support at one or more areas within said fabric laminate.
14. The article of claim 13 , wherein the altered stress profile provides a performance enhancing property.
15. The article of claim 1 , wherein said film includes one or more layers of the film.
16. The article of claim 1 , wherein said film has the same shape as said fabric section and is geometrically inverted.
17. The article of claim 1 , wherein said fabric section comprises a trapezoid having a wide end and a short end;
wherein said film also has a wide end and a short end; and
wherein said short end of the film is placed corresponding to said wide end of the fabric section and said wide end of the film is placed corresponding to said short end of the fabric section.
18. The article of claim 1 , wherein said film comprises a narrow strip;
wherein said fabric section has a top portion, an intermediate portion and a bottom portion; and
wherein said film is adjacent to two or more portions of said fabric section.
19. The article of claim 1 , wherein said film comprises a narrow strip;
wherein said fabric section has a top portion, an intermediate portion and a bottom portion; and
wherein said film is oriented on said fabric section along a diagonal from the top of the fabric section to the bottom of the fabric section.
20. The article of claim 18 , wherein said film is oriented along a diagonal or is perpendicular to the top portion or the bottom portion of the fabric section.
21. The article of claim 18 , wherein said film is non-linear.
22. The article of claim 1 , having improved whiteness retention as compared to articles containing an aromatic isocyanate measured as a reduction in CIE whiteness index value of about 30% to about 40% after exposure to about 195° C. for about five minutes.
23. The article of claim 1 , having improved whiteness retention as compared to articles containing an aromatic isocyanate measured as a reduction in CIE whiteness index value of less than about 2% after UV exposure for about 8 hours.
24. The article of claim 1 , having improved whiteness retention as compared to articles containing an aromatic isocyanate measured as a reduction in CIE whiteness index value of less than about 5% after exposure to NO 2 for about 24 hours.
25. The article of claim 1 , wherein the article has improved whiteness retention where the film has been applied.
26. The article of claim 1 , wherein the article is a brassiere having a wing portion, said wing portion including the film in the form of a narrow strip or geometrically inverted to said wing portion.
27. The article according to claim 26 , wherein the film is continuous and in the form of a narrow strip that is oriented along a diagonal within or to edges of said wing portion.
28. The article according to claim 26 , wherein the film is continuous and in the form of a narrow strip that is perpendicular to an edge of said wing portion.
29. The article of claim 1 , wherein the article is a brassiere or bralette having a wing portion, and wherein the film extends as a continuous sheet across the whole of the wing portion.
30. The article of claim 1 , wherein the article is swimwear, active wear or a shaper.
31. The article of claim 30 , wherein the film extends across a bust, belly, thigh, seat, or any combination thereof of the article.
32. The article of claim 30 , wherein the fabric laminate has improved chlorine resistance where the film has been applied.
33. The article of claim 32 , wherein the article remains intact and maintains a substantially constant altered stress profile after exposure to a chlorinated environment for about 60 hours.