초록 ▼

Pedestrian trafficable skid-resistant flexible articles are described. These articles include a flexible substrate having a non-skid coating comprising polymer units that degrade upon exposure to light and/or heat, preferably via chain scission. These articles may be applied to trafficable surfaces

Pedestrian trafficable skid-resistant flexible articles are described. These articles include a flexible substrate having a non-skid coating comprising polymer units that degrade upon exposure to light and/or heat, preferably via chain scission. These articles may be applied to trafficable surfaces such as roof and floors. Articles in the form of roof underlayments having a skid-resistant surface are described in particular.

대표청구항 ▼

What is claimed is: 1. A pedestrian trafficable skid-resistant flexible article, said article adapted to be stored in a roll and unrolled prior to application to a surface, said article comprising a flexible substrate suitable for application to a roof, floor or package, said flexible substrate hav

What is claimed is: 1. A pedestrian trafficable skid-resistant flexible article, said article adapted to be stored in a roll and unrolled prior to application to a surface, said article comprising a flexible substrate suitable for application to a roof, floor or package, said flexible substrate having a first major surface adapted to contact said roof, floor or package and an opposite second major surface adapted to be exposed to pedestrian traffic, wherein said second major surface has an elastomeric non-skid coating, said elastomeric non-skid coating comprising an elastomeric polymer composition that includes about 0.1 mole % to about 10 mole % of isoprene polymer units, whereby said isoprene polymer units are capable of degrading via chain scission over time upon exposure to light and/or temperatures of about 38° to about 104° C. 2. The article of claim 1 wherein said elastomeric polymer composition comprises a copolymer of isobutylene and isoprene. 3. The article of claim 1 wherein the elastomeric non-skid coating includes inorganic filler particles that are substantially coated with the non-skid coating. 4. The article of claim 3 wherein the filler particles have an average particle size of less than about 25 μm. 5. The article of claim 1 wherein the elastomeric polymer composition comprises a polymer, a copolymer or a mixture of polymers or copolymers. 6. The article of claim 1 wherein said elastomeric polymer composition comprises about 0.5 mole % to about 5 mole % of isoprene polymer units. 7. The article of claim 6 wherein the elastomeric non-skid coating includes inorganic filler particles that are substantially coated with the elastomeric polymer composition. 8. The article of claim 7 wherein at least 98% of the filler particles within a selected 100 cm2 area of the coating are completely coated by the elastomeric polymer composition. 9. The article of claim 8 wherein the filler particles comprise at least about 25 percent by volume of the non-skid coating. 10. The article of claim 1 wherein said elastomeric polymer composition comprises a copolymer of isobutylene and isoprene. 11. The article of claim 1 wherein said elastomeric polymer composition comprises butyl rubber. 12. The article of claim 1 wherein the elastomeric polymer composition has the characteristics of a pressure sensitive adhesive. 13. The article of claim 1 wherein the elastomeric non-skid coating is substantially reflective. 14. The article of claim 1 wherein the flexible substrate comprises at least one support layer comprising a woven fabric, a non-woven fabric, a polyolefin film, spun bonded polypropylene or woven polypropylene. 15. The article of claim 1 wherein the elastomeric non-skid coating has a thickness of 5 μm or less. 16. The article of claim 1 wherein the elastomeric polymer composition comprises a rubber selected from the group consisting of styrene-isoprene-styrene block copolymers, styrene-butadiene-styrene block copolymers, styrene-ethylene-butylene-styrene block copolymers, styrene/butadiene rubber, natural rubber, silicone rubber, butyl rubber, polyisoprene, polyisobutylene, chloroprene, ethylene-propylene rubber, ethylene alpha olefin, polybutadiene, nitrile rubber, and acrylic rubber. 17. The article of claim 1 wherein the volume of non-skid coating is less than about 2 cm3/ft2 (21.5 cm3/m2). 18. The article of claim 1 wherein the non-skid coating includes a tackifier and/or plasticizer. 19. The article of claim 18 wherein the non-skid coating includes a tackifier, wherein the weight ratio of elastomeric polymer composition to tackifier is about 3:1 to 2:1. 20. The article of claim 18 wherein the non-skid coating comprises Butyl 065 and Regalrez 1085 in a 2:1 weight ratio. 21. A method of improving the skid-resistance of an article comprising a flexible substrate with an elastomeric non-skid coating thereon, the method comprising: providing the article with an elastomeric non-skid coating, said elastomeric non-skid coating comprising an elastomeric polymer composition that comprises about 0.1 mole % to about 10 mole % of isoprene polymer units, whereby said isoprene polymer units are capable of degrading via chain scission over time upon exposure to light and/or temperatures of about 38° to about 104° C.; installing said article onto a structure such that the elastomeric non-skid coating is outwardly exposed; and exposing the article to light and/or heat for a time sufficient to increase the tack of said elastomeric non-skid coating.