公开(公告)号：US09018269B2

公开(公告)日：2015-04-28

申请号：US13860785

申请日：2013-04-11

Applicant: Kaneka Corporation

Inventor： Jun Fukuzawa ,  Takamasa Imai ,  Kiyoshi Mori

IPC: C08J9/00 ,  B29C44/34 ,  C08J9/18 ,  C08J9/228

CPC classification number: B29C44/3461 ,  C08J9/00 ,  C08J9/0023 ,  C08J9/0061 ,  C08J9/125 ,  C08J9/18 ,  C08J9/228 ,  C08J9/232 ,  C08J2203/06 ,  C08J2323/02 ,  C08J2323/12 ,  C08J2471/00 ,  Y10T428/249921 ,  Y10T428/2982

Abstract: A process for producing expanded polyolefin resin particles with use as a foaming agent of water contained in an aqueous dispersion medium. The process includes dispersing polyolefin resin particles together with the aqueous dispersion medium into a closed vessel; heating the polyolefin resin particles up to or above a softening temperature of the polyolefin resin particles and pressurizing the polyolefin resin particles; and releasing the polyolefin resin particles into a zone whose pressure is lower than an internal pressure of the closed vessel. The polyolefin resin particles are composed of a polyolefin resin composition including polyolefin resin, polyvalent alcohol and a foam nucleating agent.

Abstract translation: 用作水分散介质中所含水的发泡剂的发泡聚烯烃树脂颗粒的制造方法。 该方法包括将聚烯烃树脂颗粒与水分散介质一起分散到密闭容器中; 将聚烯烃树脂颗粒加热至聚烯烃树脂颗粒的软化温度以上或加压聚烯烃树脂颗粒; 并将聚烯烃树脂颗粒释放到压力低于密闭容器的内部压力的区域中。 聚烯烃树脂颗粒由包含聚烯烃树脂，多元醇和泡沫成核剂的聚烯烃树脂组合物组成。