Roof sheeting

• US 6,543,199 B1
• Filed: 11/10/2000
• Issued: 04/08/2003
• Est. Priority Date: 04/30/1998
• Status: Expired due to Term

• Current Assignee: Lion Copolymer Geismar, LLC (East West Copolymer LLC)
• Original Assignee: Uniroyal Chemical Company Inc
• Inventors: Jablonowski, Thomas L., Tomlinson, Richard W.
• Primary Examiner(s): HORTON, YVONNE MICHELE
• Application Number:
  US09/647,287
• Time in Patent Office: 879 Days
• Field of Search: 527/461.1, 527/461.B, 524/08, 524/11, 156/71, 156/157, 156/306.6, 156/308.4, 156/308.2, 428/57, 428/58, 428/141, 428/147, 428/255, 428/295, 428/517, 428/519, 428/520, 428/521, 428/97, 428/522
• US Class Current: 52/746.11
• CPC Class Codes: C08L 23/16 Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
• CPC Class Codes: E04D 5/06 by making use of plastics
• CPC Class Codes: Y10T 156/13 Severing followed by associating with part from same source
• CPC Class Codes: Y10T 156/1322 Severing before bonding or assembling of parts
• CPC Class Codes: Y10T 428/24967 Absolute thicknesses specified
• CPC Class Codes: Y10T 428/31913 Monoolefin polymer
• CPC Class Codes: Y10T 428/31917 Next to polyene polymer
• CPC Class Codes: Y10T 428/31924 Including polyene monomers
• CPC Class Codes: Y10T 428/31931 Polyene monomer-containing
• CPC Class Codes: Y10T 428/31935 Ester, halide or nitrile of addition polymer

Abstract

A method is disclosed for covering a roof with seamable sheet material for roofing prepared from a polymeric composition of matter comprising the steps of:

applying layers of sheet material prepared from a seamable polymeric composition of matter to the roof being covered, overlapping adjacent edges of said layers, and

adhering the overlapped areas to provide an acceptable seam strength; wherein the composition of matter comprises an interpolymer of ethylene, propylene, and at least two nonconjugated dienes, each having one reactive double bond.

Claims

1. A method for covering a roof with seamable sheet material for roofing prepared from a polymeric composition of matter comprising the steps of:

applying layers of sheet material prepared from a seamable polymeric composition of matter to the roof being covered;

overlapping adjacent edges of said layers; and

adhering the overlapped areas to provide an acceptable seam strength;

wherein said composition of matter comprises an interpolymer comprising;

A) ethylene,

B) propylene,

C) a first nonconjugated diene having one reactive double bond, and

D) a second nonconjugated diene having one reactive double bond.

2. The method of claim 1 wherein the first and second nonconjugated dienes are selected from the group consisting of 1,4-hexadiene, 2-methyl-1,5-hexadiene, 1,9-octadecadiene, dicyclopentadiene, tricyclopentadiene, 5-vinyl-2-norbornene, 5-ethylidene-2-norbornene, and 5-methylene-2-norbornene.

3. The method of claim 2 wherein the first nonconjugated diene is 5-ethylidene-2-norbornene.

4. The method of claim 3 wherein the second nonconjugated diene is dicyclopentadiene.

5. The method of claim 1 wherein the interpolymer further comprises at least one diene having two reactive double bonds wherein said diene is different from said first nonconjugated diene and said second nonconjugated diene.

6. The method of claim 5 wherein the diene having two reactive double bonds is selected from the group consisting of 1,4-pentadiene, 1,5-hexadiene, 1,7-octadiene, 3,6-dimethyl-1,7-octadiene, 4,5-dimethyl-1,7-octadiene, 1,9-decadiene, 1,11-dodecadiene, 1,20-heneicosadiene, 5-(5-hexenyl)-2-norbornene, 2,5norbornadiene, 5-(2-propenyl)-2-norbornene, and norborneonorbornene.

7. The method of claim 1 wherein the composition further comprises a curative package comprising (a) a peroxide compound or (b) a sulfur donor curative and (c) at least one cure accelerator.

8. The method of claim 7 wherein the curative package comprises a sulfur donor curative and at least one cure accelerator.

9. The method of claim 8 wherein the sulfur donor curative is selected from the group consisting of sulfur, dimethyl-diphenylthiuram disulfide, dipentamethylenethiuram tetrasulfide, tetraethylthiuram disulfide, tetramethylthiuram disulfide, alkyl disulfides, selenium diethyldithiocarbamate, selenium dimethyldithiocarbamate, 4,4′

-dithiodimorpholine, and N,N′

-dithiobis(hexahydro-2H-azepinon-2).

10. The method claim 9 wherein the sulfur donor curative is sulfur.

11. The method of claim 10 wherein the sulfur is in the rhombic crystalline form called “

rubber makers'"'"' sulfur”

or “

spider sulfur.”

12. The method of claim 7 wherein the cure accelerator is selected from the group consisting of thiazoles, thiuram monosulfides, thiuram disulfides, and dithiocarbamates.

13. The method of claim 12 wherein the cure accelerator is selected from the group consisting of benzothiazyl disulfide;

2-mercaptobenzothiazole;

tetramethylthiuram disulfide;

tetramethylthiuram monosulfide;

tetraethylthiuram disulfide;

tetrabutylthiuram monosulfide;

diisopropylthiuram disulfide;

phenylethylthiuram disulfide;

zinc dibutyldithiocarbamate;

zinc pentamethylenedithiocarbamate;

bismuth dimethyldithiocarbamate;

nickel dibutyldithiocarbamate;

copper dimethyldithiocarbamate;

selenium diethyldithiocarbamate;

lead dimethyldithiocarbamate;

selenium dimethyldithiocarbamate;

tellurium dimethyldithiocarbamate;

tellurium diethyldithiocarbamate;

cadmium diethyldithiocarbamate;

zinc dibenzyldithiocarbamate;

zinc dimethyldithio carbamate; and

zinc diethyldithiocarbamate.

14. The method of claim 11 wherein the cure accelerator is selected from the group consisting of benzothiazyl disulfide;

2-mercaptobenzothiazole;

tetramethylthiuram disulfide;

tetramethylthiuram monosulfide;

tetraethylthiuram disulfide;

tetrabutylthiuram monosulfide;

diisopropylthiuram disulfide;

phenylethylthiuram disulfide;

zinc dibutyldithiocarbamate;

zinc pentamethylenedithiocarbamate;

bismuth dimethyldithiocarbamate;

nickel dibutyldithiocarbamate;

copper dimethyldithiocarbamate;

selenium diethyldithiocarbamate;

lead dimethyldithiocarbamate;

selenium dimethyldithiocarbamate;

tellurium dimethyldithiocarbamate;

tellurium diethyldithiocarbamate;

cadmium diethyldithiocarbamate;

zinc dibenzyldithiocarbamate;

zinc dimethyldithio carbamate; and

zinc diethyldithiocarbamate.

15. The method of claim 1 wherein the composition further comprises a filler selected from the group consisting of carbon black, silicates, talc, mica, clay, calcium carbonate, and mixtures thereof.

16. The method of claim 1 wherein the sheet material is flashing.