The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 22, 2003
Filed:
Sep. 20, 2000
Mitsui Chemicals, Inc., Tokyo, JP;
Abstract
The sheathed wire or cable of the invention is obtained by coating an outermost layer of a wire or cable with a polyethylene resin produced by polymerization using a single-site catalyst. The polyethylene resin preferably has the properties: (i) the 50% crack occurrence time (F ), that becomes an indication of stress crack resistance, is not less than 600 hours, (ii) the abrasion wear as measured by a Taber abrasion test is not more than 10 mg, and (iii) the Izod impact strength (notched) as measured at −40° C. is not less than 40 J/m . In the polyethylene resin, high-pressure low-density polyethylene may be contained. The sheathed wire and cable exhibit excellent stress crack resistance, abrasion resistance and low-temperature impact resistance because their sheaths have stress crack resistance, abrasion resistance and low-temperature impact resistance better than those of conventional polyethylene sheaths.