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:
Jan. 11, 2005
Filed:
Oct. 18, 2001
Hideo Toyoda, Sodegaura, JP;
Kazunori Okawa, Yamaguchi, JP;
Hideo Toyoda, Sodegaura, JP;
Kazunori Okawa, Yamaguchi, JP;
Mitsui Chemicals, Inc., Tokyo, JP;
Abstract
The additive (b) for a communication cable filler according to the present invention contains as a main component an ethylene/α-olefin copolymer (a) having a number-average molecular weight (Mn), measured by GPC, of 500 to 5,000 and having a crystallizing temperature (Tc (° C.), rate of temperature decrease: 2° C./min) measured by DSC and a density (D (kg/m)) measured by a density gradient tube method, said Tc and D satisfy the following formula (1):0.501×(kg/m)−366≧(° C.)  (1). The communication cable filler (c) according to the invention is prepared by blending (X) 40 to 90% by mass of polybutene (d) having a number-average molecular weight of 200 to 2,400, (Y) 1 to 50% by mass of an oil (e) and (Z) 1 to 15% by mass of the ethylene/α-olefin copolymer (a). The additive for a communication cable filler and the communication cable filler are excellent in the filling workability and the oil retention properties of a cable jelly.