COLD SHRINKABLE ARTICLE INCLUDING AN EPICHLOROHYDRIN COMPOSITION

• US 20080281032A1
• Filed: 05/07/2007
• Published: 11/13/2008
• Est. Priority Date: 05/07/2007
• Status: Active Grant

• Current Assignee: 3M Innovative Properties Company (3M Company)
• Original Assignee: 3M Innovative Properties Company (3M Company)
• Inventors: BANDYOPADHYAY, Pradip K.
• Granted Patent: US 8,188,178 B2
• Time in Patent Office: Days
• US Class Current: 524/463
• CPC Class Codes: B29C 63/18 using tubular layers or sheathings B29C63/26 and B29C63/38 take precedence; placing tubular labels around rigid containers B65C3/065
• CPC Class Codes: B29K 2995/0046 Elastic
• CPC Class Codes: C08G 65/24 Epihalohydrins
• CPC Class Codes: C08K 5/14 Peroxides
• CPC Class Codes: C08L 2666/04 Macromolecular compounds according to groups C08L7/00 - C08L49/00, or C08L55/00 - C08L57/00; Derivatives thereof
• CPC Class Codes: C08L 27/16 Homopolymers or copolymers or vinylidene fluoride
• CPC Class Codes: C08L 71/03 Polyepihalohydrins
• CPC Class Codes: F16L 47/22 using shrink-down material
• CPC Class Codes: F16L 57/00 Protection of pipes or objects of similar shape against external or internal damage or wear protection under water F16L1/123; supporting of pipes inside other pipes or sleeves F16L7/00; used in connection with end fittings of hoses F16L35/00; protection thereof during transport B65D59/00
• CPC Class Codes: Y10T 428/13 Hollow or container type article [e.g., tube, vase, etc.]
• CPC Class Codes: Y10T 428/1328 Shrinkable or shrunk [e.g., due to heat, solvent, volatile agent, restraint removal, etc.]

Abstract

A composition includes an elastomeric composition. The elastomeric composition can include an epichlorohydrin composition, and the elastomeric composition can be substantially free of a fluoroelastomer composition. The composition can further include a filler material which includes a reinforcement-grade carbon black. The composition can further include a peroxide curative.

Claims

1. A composition comprising:

an elastomeric composition, the elastomeric composition comprising an epichlorohydrin composition, and the elastomeric composition being substantially free of a fluoroelastomer composition;

a filler material, the filler material comprising a reinforcement-grade carbon black and a silica; and

a peroxide curative.

2. The composition as defined by claim 1, wherein the quantity of filler material is in the range of about 10 phr to about 25 phr, and wherein the quantity of peroxide curative is in the range of about 0.5 phr to about 4.0 phr.

3. The composition as defined by claim 1, wherein the reinforcement-grade carbon black comprises carbon black having an average particle size of less than about 40 nm.

4. The composition as defined by claim 1, wherein the silica comprises a silane treated firmed silica.

5. The composition as defined by claim 1, wherein the filler material further comprises a Teflon composition.

6. The article as defined by claim 1, wherein the composition further comprises a cross-linking agent or cross-linking co-agent.

7. The composition as defined by claim 1, wherein the composition exhibits an elongation greater than about 550% and a permanent set less than about 25% at room temperature.

8. The composition as defined by claim 1, wherein the composition exhibits an elongation greater than about 300% and a permanent set less than about 25% at 130 degrees Celsius.

9. The composition as defined by claim 1, wherein the composition exhibits an elongation greater than about 275% and a permanent set less than about 25% at 150 degrees Celsius.

10. The composition as defined by claim 1, wherein the composition does not tear while being held for seven days in a 200% radially expanded state at 150 degrees Celsius.

11. The composition defined by claim 1, wherein the composition exhibits less than about a 25% weight increase when immersed in diesel fuel for 24 hours at a temperature of about 49 degrees Celsius.

12. The composition defined by claim 1, wherein the composition exhibits less than about a 10% weight increase when immersed in hydraulic fluid for 24 hours at a temperature of about 71 degrees Celsius.

13. A method of use comprising:

(a) providing an elastomeric composition, the elastomeric composition comprising an epichlorohydrin composition, and the elastomeric composition being substantially free of a fluoroelastomer composition;

(b) providing a filler material, the filler material comprising a reinforcement-grade carbon black; and

(c) providing a peroxide curative;

(d) mixing the elastomeric composition, the filler material, and the peroxide curative to form a blend composition; and

(e) curing the blend composition to form a tubular cold shrinkable material; and

(f) installing a removable core inside the tubular cold shrinkable material to support the cold shrinkable material in an expanded state.

14. The method as defined by claim 13, wherein the quantity of filler material is in the range of about 10 phr to about 25 phr, and wherein the quantity of peroxide curative is in the range of about 0.5 phr to about 4.0 phr.

15. The method as defined by claim 13, wherein the reinforcement-grade carbon black comprises carbon black having an average particle size of less than about 40 nm.

16. The method as defined by claim 13, wherein the filler material further comprises a silica.

17. The method as defined by claim 13, wherein the filler material further comprises a silane treated fumed silica.

18. The method as defined by claim 13, wherein the filler material further comprises a Teflon composition.

19. The method as defined by claim 13, wherein the composition further comprises a cross-linking agent or cross-linking co-agent.

20. The method as defined by claim 13, further comprising exhibiting an elongation greater than about 550% and a permanent set less than about 25% at room temperature.

21. The method as defined by claim 13, further comprising exhibiting an elongation greater than about 300% and a permanent set less than about 25% at 130 degrees Celsius.

22. The method as defined by claim 13, further comprising exhibiting an elongation greater than about 275% and a permanent set less than about 25% at 150 degrees Celsius.

23. The method as defined by claim 13, further comprising the absence of tearing while being held for seven days in a 200% radially expanded state at 150 degrees Celsius.