公开(公告)号：US20220098383A1

公开(公告)日：2022-03-31

申请号：US17426539

申请日：2020-01-28

Applicant: BASF SE

Inventor： Bang Wei Xi ,  YingHao Liu ,  Wei Liang Chien ,  Jin Lin Liu ,  Bo Chen

IPC: C08J9/14 ,  C08G18/76 ,  C08G18/66 ,  C08G18/48 ,  C08G18/42 ,  C08G18/40 ,  C08G18/32

Abstract: Described herein is a method for preparing polyurethane foams, including (1) placing a reaction mixture into a pressurizable chamber, and (2) polymerizing the reaction mixture at an additional pressure, where the reaction mixture comprises an isocyanate, an isocyanate-reactive compound and a blowing agent, and the reaction mixture is placed into the pressurizable chamber at a packing factor of 2.0-4.0. Also described herein is a polyurethane foam prepared by such a method.

公开(公告)号：US20220098359A1

公开(公告)日：2022-03-31

申请号：US17426371

申请日：2020-01-14

Applicant: BASF SE

Inventor： Bang Wei Xi ,  YingHao Liu ,  Zhen Peng Liang ,  Jin Lin Liu ,  Bo Chen ,  Ben Ben Shen ,  Zi Song Zhu

IPC: C08G18/76 ,  C08G18/10 ,  C08G18/48 ,  C08G18/18 ,  C08J9/12 ,  C08J9/00 ,  A43B13/18

Abstract: Described herein is a polyurethane foam prepared with certain polytetrahydrofurans and optional polyether polyols. The polyurethane foam is characterized by low hardness increase at low temperature as compared with conventional polyurethane foam, and is suitable for use in products which can be exposed to low temperature such as snow boots.