公开(公告)号：US20230192969A1

公开(公告)日：2023-06-22

申请号：US16613469

申请日：2018-06-28

Applicant: Borealis AG

Inventor： Oscar Prieto ,  Ola Fagrell ,  Lars Westling ,  Mattias Bergqvist ,  Kenneth Wiecoreck

IPC: C08J3/20 ,  C08J3/24 ,  C08K5/14 ,  C08K3/04 ,  C08L23/08

CPC classification number: C08J3/20 ,  C08J3/24 ,  C08K5/14 ,  C08K3/04 ,  C08L23/0853 ,  C08J2331/04 ,  C08L2203/202 ,  B29C48/40

Abstract: The present invention provides a method for producing an at least partially crosslinked polymer composition, having a first melt index (MI) value and a first tensile strength, comprising the steps of: a. providing an ethylene vinyl acetate (EVA) copolymer, the EVA copolymer having a second MI value and a second tensile strength and containing at least 30 wt % units derived from vinyl acetate, b. adding from 0.01 to 0.03 wt % of an organic peroxide, wherein the organic peroxide is diluted in 0.001 to 0.05 wt % of white oil, and c. blending the EVA copolymer and the organic peroxide at a temperature sufficient to initiate crosslinking. The first MI value of the at least partially crosslinked polymer composition is less than 5 g/10 min (190° C., 2.16 kg).