Lap edge roofing sealant
AssigneeAdco Products, Inc.
InventorDennis Keith Fisher
Life of this patent
Estimating the term…
Abstract
A lap edge sealant composition is provided for adhering together overlapping sheets of roofing material which includes a rubbery polymer such as EPDM, a thermoplastic rubber, a tackifier, and a solvent, where the solvent is selected from aliphatic hydrocarbons, para-chlorobenzotrifluoride, or blends thereof. The lap edge sealant has a high solids content of about 65 to 90%, a volatile organic compound (VOC) content of less than about 250 g/l, and exhibits no more than about 35% shrinkage upon curing.
Claims14
A lap edge sealant composition for sealing the lap joints of roofing materials comprising:
- an EPDM rubber;
- a styrene-ethylene/propylene copolymer;
- a tackifier;
- and
- a solvent, said composition having a volatile organic compound (VOC) content of less than about 250 g/l.
A lap edge sealant composition comprising:
- an EPDM rubber;
- a thermoplastic elastomer;
- a tackifier;
- and
- a solvent comprising para-chlorobenzotrifluoride and naptha, said composition having a volatile organic compound (VOC) content of less than about 250 g/l.
A lap edge sealant composition comprising:
- an EPDM rubber;
- a thermoplastic elastomer;
- a tackifier;
- and
- a solvent comprising naptha and VM&P naptha, said composition having a volatile organic compound (VOC) content of less than about 250 g/l.
A lap edge sealant composition comprising:
- an EPDM rubber having a Mooney viscosity of from about 1 to 40;
- a thermoplastic elastomer;
- a tackifier;
- and
- a solvent, said composition having a volatile organic compound (VOC) content of less than about 250 g/l.
A lap edge sealant composition comprising:
- an EPDM rubber;
- a thermoplastic elastomer;
- a tackifier;
- an accelerator/cure package;
- and
- a solvent, said composition having a volatile organic compound (VOC) content of less than about 250 g/l and exhibiting no more than about 35% shrinkage upon curing.
Dependencies are inferred from the claim text.