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, 1983
Filed:
Dec. 31, 1980
Hiroshi Yui, Yokkaichi, JP;
Tetsuji Kakizaki, Yokkaichi, JP;
Yashinori Nishiya, Yokkaichi, JP;
Shinji Horie, Yokkaichi, JP;
Mitsubishi Petrochemical Company, Ltd., Tokyo, JP;
Abstract
A composition essentially consisting of a monoolefin copolymer rubber such as an ethylene-propylene copolymer rubber and a polyolefin resin such as polypropylene is granulated and then suspended, by stirring, in water containing a suspending agent. Then, a cross-linking agent is dispersed in the resulting suspension and introduced into the granules at a temperature lower than the decomposition temperature of the cross-linking agent to obtain a granular composition uniformly impregnated with the cross-linking agent. This composition is used as such or as a masterbatch to prepare partially cross-linked thermoplastic elastomers. Such compositions having a cross-linking agent content of not greater than 5% by weight based on the amount of the rubber component can be converted into partially cross-linked thermoplastic elastomers having a uniform degree of cross-linking, simply by heating the impregnated granules statically to effect the cross-linking reaction.