公开(公告)号：US11274203B2

公开(公告)日：2022-03-15

申请号：US16477894

申请日：2017-02-24

Applicant: Miracll Chemicals Co., Ltd.

Inventor： Zhensheng Zhan ,  Hongwei Song ,  Qingbo Zhao ,  Sheng Zhang ,  Guanglei Ren

IPC: C08L75/06 ,  B01J2/20

Abstract: A process for preparing a TPU alloy material through in-situ compatibilization includes: 1) adding a premixed TPU raw material to a feeding port of a twin-screw extruder; injecting a mixture of an alloy component and a dual-active substance into the twin-screw extruder through a lateral feeding port; adding an auxiliary reagent to the TPU raw material or the mixture of the alloy component and the dual-active substance, wherein the alloy component is a polyolefin or a thermoplastic polymer material having reactivity, wherein the dual-active substance is a substance containing a group reactive with the TPU raw material and a group reactive with the alloy component, and the auxiliary reagent includes an initiator; 2) controlling a temperature of a reaction zone of the twin-screw extruder at 50° C. to 250° C., and granulating an extruded material by underwater cutting; and 3) drying the granulated product to obtain the TPU alloy material.

公开(公告)号：US11530310B2

公开(公告)日：2022-12-20

申请号：US16478290

申请日：2017-02-24

Applicant: MIRACLL CHEMICALS CO., LTD.

Inventor： Guangfu Wang ,  Hongwei Song ,  Chongchong Yang ,  Guanglei Ren ,  Renhong Wang

IPC: C08J9/236 ,  B29C44/04 ,  B29C44/34 ,  B29C44/60 ,  C08J9/224 ,  C08L75/04 ,  B29K75/00 ,  B29K105/04

Abstract: The present invention relates to a method for preparing a foamed thermoplastic polyurethane elastomer product, comprising the steps of: 1) coating a binder: coating the binder on the surfaces of expandable thermoplastic polyurethane elastomer particles; 2) curing and molding: adding the product obtained from step 1) to a mold and then placing it in a vulcanizing machine for curing and molding; and 3) cooling and setting: cooling the mold after the molding in step 2) to obtain the product of the present invention. By means of pre-coating the binder on the surfaces of expanded thermoplastic polyurethane elastomer particles according to the present invention, the weight of the binder can be reduced, and the properties of the expanded thermoplastic polyurethane elastomer particles can be utilized to the maximum extent.