Claims
- 1. A method of analyzing an identifiable rubber article comprised of a rubber-based material and an X-ray fluorescable material, comprising the steps of irradiating the material with a fluorescence-inducing wavelength and analyzing the fluorescence emission data of said material.
- 2. The method of claim 1 wherein said rubber article comprises a rubber roofing membrane or material.
- 3. The method of claim 2 comprised of an EPDM terpolymer.
- 4. The method of claim 1 wherein said X-ray fluorescable material is selected from the group consisting of manganese dioxide and barium sulfate, and mixtures thereof.
- 5. The method of claim 1 wherein said X-ray fluorescable material is in particulate form.
- 6. The method of claim 4 wherein said X-ray fluorescable material comprises from about 0.25 to about 0.75 parts per 100 parts by weight of said rubber-based material and said X-ray fluorescable material.
- 7. The method of claim 2 wherein said roofing membrane is in sheet form, said sheet including over at least a portion of at least one surface thereof a dusting agent coating containing an X-ray fluorescable material.
- 8. The method of claim 7 comprised of an EPDM terpolymer.
- 9. The method of claim 7 wherein said X-ray fluorescable material is selected from the group consisting of manganese dioxide and barium sulfate, and mixtures thereof.
- 10. The method of claim 7 wherein said X-ray fluorescable material is in particulate form.
- 11. The method of claim 7 wherein said X-ray fluorescable material comprises from about 5 to about 10 weight percent of said coating.
- 12. The method of claim 7 wherein said material is in the form of a cured sheet membrane.
- 13. The method of claim 7 wherein said material is in the form of a vulcanizable flashing material.
- 14. The method of claim 7 wherein said material is in the form of a non-vulcanizing flashing material.
Parent Case Info
This is a divisional of copending application Ser. No. 07/602,543 filed on Oct. 24, 1990, now U.S. Pat. No. 5,145,750.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
4639942 |
Puumalainen |
Jan 1987 |
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Divisions (1)
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Number |
Date |
Country |
Parent |
602543 |
Oct 1990 |
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