| abstract |
The manufacturing method of cross-linking agent of the invention include by vinyl copolymer (A) or containing the vinyl copolymer (A) resin combination melt molding process and make its be crosslinked process, the vinyl copolymer (A) is the copolymer of the structural unit with the structural unit from ethylene and the alpha-olefin from carbon atom number 3~20, meets the important document of whole following (1), (2) and (3).(1) it utilizes 1 The contents of ethylene in every 1000 carbon atoms that H-NMR is acquired is 0.06 or more 1 or less.(2)MFR 10 /MFR 2.16 It is 8.5 or more 50 or less.(3) density d is 850kg/m 3 The above 920kg/m 3 Below.The method of manufacture cross-linking agent through the invention, can be obtained the cross-linking agent of good forming ability, mechanical strength.In addition, the method excellent using productivity, obtains light and mechanical strength foaming body, and the cross moulding body that the deviation that can provide size between individual is small. |