Cold shrinkable article including an epichlorohydrin composition

• US 8,389,618 B2
• Filed: 02/20/2012
• Issued: 03/05/2013
• 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.
• Primary Examiner(s): Seidleck, James J
• Assistant Examiner(s): Valdez, Deve E
• Application Number:
  US13/400,492
• Publication Number:
  US 20120149825A1
• Time in Patent Office: 379 Days
• Field of Search: 524/495, 524/114, 524/404, 524/187, 428/34.9, 428/34.1
• US Class Current: 524/495
• 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 tubular cold-shrinkable material comprising the reaction product of:

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

a filler material, the filler material comprising one or both of a reinforcement-grade carbon black and a fumed silica; and

a peroxide curative, wherein the quantity of filler material is in the range of about 10 phr to about 25 phr and the quantity of peroxide curative is in the range of about 0.5 phr to about 4.0 phr.

2. The material 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.

3. The material as defined by claim 1, wherein the fumed silica comprises a silane treated fumed silica.

4. The material as defined by claim 1, wherein the material further comprises a cross-linking agent or cross-linking co-agent.

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

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

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

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

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

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