US Patent No: 5,545,685
Number of patents in Portfolio can not be more than 2000
Adhesive tape compositions and method for covering roofs
Stats
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Aug 13, 1996
Issued date -
Apr 28, 1995
filing date -
08/430,387
serial no -
In Force
status
Importance
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Abstract
An adhesive tape composition includes a polymer blend comprising at least one EPDM rubber, and preferably three EPDM rubbers in substantially equal amounts, and an adhesive-enhancing polymer selected from the group consisting of polyisoprene, polybutadiene, and ethylene-propylene copolymer and mixtures thereof. The tape adhesive composition further includes at least one tackifying additive compatible with said polymer blend and a sulfur and organic accelerator cure, package for said polymer blend, the adhesive composition being devoid of butyl rubber which is found in most other adhesive tape compositions. This composition is seen as providing excellent long-term heat aging, weathering resistance, and low temperature properties as compared to adhesive tape compositions containing butyl rubber. Moreover, the adhesive tape composition provides more surface tack, better "quick-grab", and higher green strength as compared to adhesive tape compositions containing 100 percent EPDM rubber. A method is also provided for covering roofs which includes the step of employing the adhesive tape composition.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 4,539,344 Thermally stable sealant composition | 17 | 1982 | |
| 4,426,468 Sealant composition | 27 | 1982 | |
| 4,588,637 Adhesive composition | 34 | 1984 | |
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| 4,855,172 Adhesive composition laminate with butyl rubber | 36 | 1987 | |
| 5,095,068 Adhesive of butyl rubber, curing agent, c-black and tackifier | 27 | 1989 | |
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| 5,000,361 Caulking gun nozzle | 20 | 1987 | |
| 5,242,727 Adhesive composition and method for providing water-tight joints in single-ply roofing membranes | 37 | 1991 | |
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| 4,404,056 Method of joining waterproof vulcanized synthetic rubber sheets | 17 | 1981 | |
| 4,379,114 Method of joining waterproof sheets, and their joint structure | 22 | 1981 | |
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| 5,260,111 Thermoplastic films for heat seaming roof sheeting and method for covering roofs | 16 | 1991 | |
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| 4,657,958 Contact adhesive and adhesive system for EPDM elastomers | 13 | 1986 | |
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| 4,335,026 Pressure-sensitive adhesive compositions having high shear and low peel resistance | 27 | 1981 | |
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| 4,581,092 Preformed adhesive compositions | 18 | 1984 | |
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| 4,601,935 EPDM laminate | 33 | 1985 | |
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| 4,645,793 EPDM elastomeric compositions | 22 | 1985 | |
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| 5,216,066 Tread compounds containing modified EPDM which exhibit good abrasion resistance and improved hysteresis properties | 9 | 1992 | |