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:
Aug. 01, 1995
Filed:
Mar. 27, 1990
Applicant:
Inventors:
Saburo Matsubara, Yokohama, JP;
Yoshihiro Goushi, Yokohama, JP;
Assignee:
Nippon Oil Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08K / ; C08J / ;
U.S. Cl.
CPC ...
524490 ; 523351 ; 524528 ; 525240 ; 264143 ;
Abstract
A masterbatch composition for thermoplastic resin modification containing a polybutene and an ethylene-.alpha.-olefin copolymer obtained by copolymerizing ethylene with .alpha.-olefin in the presence of specific catalysts and characterized by specific properties, and a method for preparing the composition by kneading and extrusion at a temperature ranging from the maximum peak temperature (Tm) to (Tm-45).degree. C. in accordance with differential scanning calorimetry of the copolymer are disclosed. Masterbatch pellets for thermoplastic resin modification having low surface tackiness can be obtained from the composition.