Title: Restorative material for antioxidant depleted polyolefin insulation

Abstract: Materials and methods are shown for increasing the antioxidant protection of polyolefin insulation, such as low density polyethylene insulation on electrical conductors. The materials may be applied in the field to increase the service life of in-place cable. The material is typically applied by brushing or spraying a lacquer-based carrier containing the inventive stabilizer onto the insulation to be protected. The stabilizer migrates into the polyolefin insulation, typically increasing the service life of antioxidant depleted cable by several years.

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Inventors: Wight, Jr., Frederick R. (West Millington, NJ, US)

Application Number: 055277
Filing Date: 1979-07-06
Publication_date: 1980-11-11
Assignee: Bell Telephone Laboratories, Incorporated (Murray Hill, NJ)
Primary Class(es): 174/120C 174/110PM, 174/110SR, 252/403, 427/117, 427/421, 427/434.6, 524/291, 524/303, 524/583
Other Classes:
US Patent Ref:

3819410	Jun, 1974	Kuckro et al.	174/110.
3951911	Apr, 1976	Kiss	260/45.
3972927	Aug, 1976	Susi et al.	260/45.
4093774	Jun, 1978	Hartless et al.	174/110.
4101512	Jul, 1978	Schmidt et al.	260/45.
4133936	Jan, 1979	Vostovick	174/110.

Other Refs:
Primary Examiner: Smith, Ronald H.
Assistant Examiner: Page, Thurman K.
Attorney: Wilde; Peter V. D.