1. A roofing membrane comprising:
a main body that is made of a material suitable for installation atop a roof surface for covering and protecting said surface, the main body having:
a top surface;
a bottom surface positioned opposite the top surface; and
four edges that define an outer perimeter of the main body such that the main body has a rectangular or square profile;
a first adhesive tape bonded to the top surface of the main body and positioned toward a first edge thereof, the first adhesive tape extending along a majority of a length of the first edge; and
a second adhesive tape bonded to the bottom surface of the main body and positioned toward a second edge thereof, the second adhesive tape extending along a majority of a length of the second edge;
wherein the second edge is positioned opposite the first edge such that the first and second adhesive tapes are positioned toward opposite edges of the main body on opposite surfaces thereof, and wherein the first and second adhesive tapes are bonded to the respective surfaces of the main body prior to installation of the roofing membrane on a roof.
2. The roofing membrane of claim 1, further comprising a membrane material releasably coupled with a top surface of either or both the first adhesive tape or the second adhesive tape to reduce environmental exposure of said adhesive tape.
3. The roofing membrane of claim 1, wherein a layer of the first adhesive tape has a greater width than a layer of the second adhesive tape atop the respective surfaces of the main body.
4. The roofing membrane of claim 1, wherein either or both the first adhesive tape or the second adhesive tape are bonded to the respective surfaces of the main body such that an edge of the respective adhesive tape is aligned with the respective first or second edge of the main body.
5. The roofing membrane of claim 1, wherein either or both the first adhesive tape or the second adhesive tape are bonded to the respective surfaces of the main body such that an edge of the respective adhesive tape extends outwardly of the outer perimeter of the main body from the respective first or second edge of the main body by between about 116 and \xbc inch.
6. The roofing membrane of claim 1, wherein either or both the first adhesive tape or the second adhesive tape are bonded to the respective surfaces of the main body so as to extend along roughly the entire length of the respective first or second edge.
7. The roofing membrane of claim 1, wherein the material of the main body is ethylene propylene diene monomer rubber (EPDM).
8. The roofing membrane of claim 1, wherein the material of the main body is Thermoplastic PolyOlefin (TPO).
9. The roofing membrane of claim 1, further comprising a first membrane material releasable coupled with a top surface of the first adhesive tape and a second membrane material releasably coupled with a top surface of the second adhesive tape.
10. A roofing membrane comprising:
a main body that is made of a material suitable for installation atop a roof surface for covering and protecting said surface, the main body having:
a top surface;
a bottom surface positioned opposite the top surface; and
four edges that define an outer perimeter of the main body such that the main body has a rectangular or square profile;
a first adhesive tape bonded to the top surface of the main body and positioned toward a first edge thereof, the first adhesive tape extending along a majority of a length of the first edge and extending outwardly of the outer perimeter of the main body from the first edge by between about 116 and \xbc inch; and
a second adhesive tape bonded to the bottom surface of the main body and positioned toward a second edge thereof, the second adhesive tape extending along a majority of a length of the second edge and extending outwardly of the outer perimeter of the main body from the second edge by between about 116 and \xbc inch;
wherein the second edge is positioned opposite the first edge such that the first and second adhesive tape are positioned toward opposite edges of the main body on opposite surfaces thereof.
11. The roofing membrane of claim 10, further comprising a membrane material releasably coupled with a top surface of either or both the first adhesive tape or the second adhesive tape to reduce environmental exposure of said adhesive tape.
12. The roofing membrane of claim 10, wherein either or both the first adhesive tape or the second adhesive tape are bonded to the respective surfaces of the main body so as to extend along roughly the entire length of the respective first or second edge.
13. The roofing membrane of claim 10, further comprising a first membrane material releasably coupled with a top surface of the first adhesive tape and a second membrane material releasably coupled with a top surface of the second adhesive tape.
14. A roofing membrane comprising:
a main body that is made of a material suitable for installation atop a roof surface for covering and protecting said surface, the main body having:
a top surface;
a bottom surface positioned opposite the top surface; and
four edges that define an outer periphery of the main body such that the main body has a rectangular or square profile;
a first adhesive tape bonded to the top surface of the main body and positioned toward a first edge thereof, the first adhesive tape extending along a majority of a length of the first edge; and
a second adhesive tape bonded to the bottom surface of the main body and positioned toward a second edge thereof, the second adhesive tape extending along a majority of a length of the second edge;
wherein the second edge is positioned opposite the first edge such that the first and second adhesive tapes are positioned toward opposite edges of the main body on opposite surfaces thereof, and wherein the first and second adhesive tapes are bonded to the respective surfaces of the main body prior to coupling the roofing membrane with another roofing membrane of similar configuration such that when the roofing membrane is coupled with the other roofing membrane, an adhesive tape on tape coupling is formed.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
We claim:
1. An epoxy resin composition comprising an epoxy resin, a curing agent, an accelerator compound, and at least one boron atom containing compound represented by the formula:
9
wherein each of R1, R2 and R3 is independently selected from the group consisting of hydrogen, a hydroxy group, an alkyl group, an aryl group, a cycloalkyl group, an alkoxy group, a cycloalkoxy group, an acyl, and an acyloxy group; wherein the accelerator is an imidazole group containing compound; and wherein the molar ratio of boron atom containing compound to accelerator is less than 0.55:1.
2. The epoxy resin composition of claim 1 wherein the concentration of the accelerator is greater than 1 part per 100 parts resin.
3. The epoxy resin composition of claim 1 wherein the accelerator compound is selected from the group consisting of imidazole, 1-methylimidazole, 2-methylimidazole, 4-methylimidazole, 2-ethylimidazole, 2-ethyl-4-methylimidazole, 2-phenylimidazole, 2-undecylimidazole, 1-benzyl-2-methylimidazole, 2-heptadecyl imidazole, 4,5-diphenylimidazole, 2-isopropylimidazole, 2,4-dimethyl imidazole, 2-phenyl-4-methylimidazole, 1-cyanoethyl-2-ethyl-4-methylimidazole and combinations thereof.
4. The epoxy resin composition of claim 1 wherein the accelerator compound is selected from the group consisting of 2-methylimidazole, 2-ethyl-4-methyl imidazole and 2-phenylimidazole.
5. The epoxy resin composition of claim 1 wherein the accelerator compound averages more than one imidazole functionality per molecule.
6. The epoxy resin composition of claim 1 wherein the accelerator compound is an imidazole having an equivalent weight of greater than 140 gmol.
7. The epoxy resin composition of claim 1 wherein each of R1, R2 and R3 is independently an alkyl or an alkoxy group containing 1 to 20 carbon atoms.
8. The epoxy resin composition of claim 1 wherein the boron atom containing compound is selected from the group consisting of trimethylboroxine, trimethoxyboroxine, 1-methyloxyboroxine, triethylboroxine, triethoxyboroxine, tri-n-propylboroxine, tributylboroxine, tricyclohexyloxyboroxine, tricyclohexylboroxine, triphenylboroxine, methyl diethylboroxine, dimethylethylboroxine, and combinations thereof.
9. The epoxy resin composition of claim 1 wherein the resin composition is a fully cured composition having a Tg of about 5 C. greater than that of a comparable resin composition not including the boron atom containing compound.
10. The epoxy resin composition of claim 1 wherein the Tg is smaller than that of a comparable resin composition not including the boron atom containing compound.
11. An epoxy resin composition comprising an epoxy resin, a curing agent, an accelerator compound, and at least one boron atom containing compound represented by the formula:
10
wherein each of R1, R2 and R3 is independently selected from the group consisting of hydrogen, a hydroxy group, an alkyl group, an aryl group, a cycloalkyl group, an alkoxy group, a cycloalkoxy group, an acyl group, and an acyloxy group;
provided however that the accelerator compound does not contain an imidazole group.
12. The epoxy resin system of claim 11 wherein the accelerator compound is selected from the group consisting of tertiary amines, imidazolidines, imidazolines, bicyclic amidines, oxazoles, thiazoles, pyridines, pyrazines, morpholines, pyridazines, pyrimidines, pyrrolidines, pyrazoles, quinoxalines, quinazolines, phthalazines, quinolines, purines, indazoles, indazolines, phenazines, phenarsazines, phenothiazines, pyrrolines, indolines, piperidines, piperazines, quaternary ammoniums, quaternary phosphoniums, quaternary arsoniums, quaternary stiboniums, tertiary sulfoniums, secondary iodoniums, tertiary phosphines, amine oxides, and combinations thereof.
13. The epoxy resin system of claim 11 wherein the accelerator compound is selected from the group consisting of tetramethylammonium hydroxide pentahydrate, triethylenediamine, and diazabicycloundecene.
14. A prepreg comprising the epoxy resin composition of claim 1.
15. A prepreg comprising the epoxy resin composition of claim 11.
16. An epoxy resin composition comprising an epoxy resin, a curing agent, an accelerator compound, and at least one boron atom containing compound selected from the group consisting of ammonium biborate, ammonium biborate tetrahydrate, ammonium pentaborate, ammonium pentaborate octahydrate, lithium tetraborate, lithium tetraborate pentahydrate, sodium tetraborate, sodium tetraborate pentahydrate, sodium tetraborate decahydrate, sodium pentaborate octahydrate, disodium octaborate tetrahydrate, potassium tetraborate, potassium tetraborate tetrahydrate, potassium tetraborate pentahydrate, potassium pentaborate, potassium pentaborate tetrahydrate, potassium pentaborate octahydrate, dipotassium tetraborate tetrahydrate, dipotassium octaborate tetrahydrate, zinc octaborate, and combinations thereof.
17. The epoxy resin composition of claim 16 wherein the boron atom containing compound selected from the group consisting of ammonium pentaborate, ammonium pentaborate octahydrate, sodium tetraborate, sodium tetraborate decahydrate, potassium tetraborate, potassium tetraborate tetrahydrate, and combinations thereof.
18. An epoxy resin composition comprising an epoxy resin, a curing agent, an accelerator compound, and at least one boron atom containing compound selected from the group consisting of boron hydrides, substituted or unsubstituted metaborates, substituted or unsubstituted polyborates, substituted or unsubstituted borazines, substituted or unsubstituted borazocines, substituted or unsubstituted borthiins, substituted or unsubstituted borphosphines, and combinations thereof.