Moisture-sink layer, composition and multi-layered article
View Patent ↗Disclosed is decorative surface covering that has a substantially non-aqueous absorptive layer and a water retentive layer. The decorative surface covering may be a vinyl-backed floor covering that can be adhered to a substantially non-aqueous absorptive subfloor with a water-based adhesive. The water retentive layer is formed from a polymer matrix and super absorbent water retentive particles. The water retentive layer may also include a hydrophilic additive to facilitate movement of water from the adhesive to the super absorbent water retentive particles. The water retentive layer may also be applied to the substantially non-aqueous absorptive subfloor.
1. A water retentive composition comprising a polymer binder, super absorbent water retentive particles and a hydrophilic additive, wherein the water retentive composition comprises
about 45% to about 99% by weight of the polymer binder;
about 1% to about 10% by weight of the super absorbent water retentive particles; and
about 1% to about 50% by weight of the hydrophilic additive.
2. The water retentive composition of claim 1 , wherein the hydrophilic additive is a polyether glycol.
3. The water retentive composition of claim 1 , wherein the super absorbent water retentive particles comprise polyacrylic acid or a salt thereof.
4. The water retentive composition of claim 3 , wherein the polyacrylic acid salt is sodium polyacrylate.
5. The water retentive composition of claim 1 , wherein the polymer binder is water permeable.
6. The water retentive composition of claim 1 , wherein the polymer binder is hydrophobic.
7. The water retentive composition of claim 6 , wherein the polymer binder comprises a polyolefin.
8. A multi-layered article comprising two substantially non-porous layers, a water retentive layer interposed between the two non-porous layers and a water-based adhesive interposed between the two non-porous layers, wherein the water retentive layer comprises a water permeable polymer binder and super absorbent water retentive particles, and wherein the water retentive layer is adjacent the water-based adhesive.
9. The multi-layered article of claim 8 , wherein the super absorbent water retentive particles are dispersed within the water permeable polymer binder.
10. The multi-layered article of claim 8 , wherein the super absorbent water retentive particles comprise polyacrylic acid or salts thereof.
11. The multi-layered article of claim 10 , wherein the polyacrylic acid salt is sodium polyacrylate.
12. The multi-layered article of claim 8 , wherein the water retentive layer on a weight percent basis comprises about 45% to about 99% by weight of the water permeable polymer binder; and about 1% to about 10% by weight of the super absorbent water retentive particles.
13. A multi-layered article comprising two substantially non-porous layers, a water retentive layer interposed between the two non-porous layers and a water-based adhesive interposed between the two non-porous layers, wherein the water retentive layer comprises a hydrophobic polymer binder and super absorbent water retentive particles, and wherein the water retentive layer is adjacent the water-based adhesive.
14. The multi-layered article of claim 13 , wherein the hydrophobic polymer binder comprises a polyolefin.
15. The multi-layered article of claim 13 , wherein the super absorbent water retentive particles are dispersed within the hydrophobic polymer binder.
16. The multi-layered article of claim 13 , wherein the super absorbent water retentive particles comprise polyacrylic acid or salts thereof.
17. The multi-layered article of claim 16 , wherein the polyacrylic acid salt is sodium polyacrylate.
18. The multi-layered article of claim 13 , wherein the water retentive layer further comprises a hydrophilic additive.
19. The multi-layered article of claim 13 , wherein the hydrophobic polymer binder comprises a polyvinyl chloride polymer or copolymer.
20. The multi-layered article of claim 13 , wherein the water retentive layer on a weight percent basis comprises about 45% to about 99% by weight of the hydrophobic polymer binder; and about 1% to about 10% by weight of the super absorbent water retentive particles, and wherein the water retentive layer further comprises an hydrophilic additive, the water retentive layer comprising on a weight percent basis about 1% to about 50% by weight of the hydrophilic additive.
21. The multi-layered article of claim 18 , wherein the hydrophilic additive is a polyether glycol.
22. The water retentive composition of claim 6 , wherein the hydrophobic polymer binder comprises a polyvinyl chloride polymer or copolymer.