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US 2010/0326598 A1Published application
Low volatile organic compound adhesive for attaching thermoplastic polyolefin roofing membranes
OwnerMichael N. Atwaterinventor
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Abstract
Adhesive compositions formulated with blends of styrene-isoprene-styrene block copolymers and hydrocarbon resins are provided. Also provided are methods for bonding substrates, including roofing membranes, using the adhesive compositions. The adhesive compositions are characterized by high solids contents, low viscosities and improved bonding characteristics, including high peel strengths when adhered to roofing membranes, such as thermoplastic polyolefin (“TPO”) membranes.
Claims15
An adhesive composition comprising:
- (a) a hydrocarbon resin,
- (b) a styrene-isoprene-styrene block copolymer having a styrene content of no greater than 25 weight percent, based on the total weight of the polymer;
- and
- (c) at least one organic solvent selected from the group consisting of acetone, methyl acetate, t-butyl acetate and parachlorobenzotrifluoride;
- and
- (d) 0 to 20 weight percent of one or more additional organic solvents, based on the total weight of the composition;
- the composition having a solids content of at least 25 weight percent, a viscosity of no greater than 5000 cps at 25° C., and a 7-day 180° peel strength at room temperature of at least 1253 grams/cm (7 lbs/inch) as measured by a modified ASTM D903 test.
4 more elements
Dependencies are inferred from the claim text.