Title:
RIGID POLYURETHANE FOAM AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2024/093850
Kind Code:
A1
Abstract:
The present disclosure relates to the technical field of polyurethane foams, and in particular relates to a rigid polyurethane foam and a preparation method therefor. The rigid polyurethane foam of the present disclosure is mainly prepared from a polyol mixture and an isocyanate at a mass ratio of 100 : 60-95, wherein the polyol mixture comprises the following components in parts by weight: 5-95 parts of a polyether polyol, 5-95 parts of a polyester polyol, 5-95 parts of a phenyl polyester polyol, 0.1-5 parts of a foaming agent, and 1-8 parts of a foaming aid. The rigid polyurethane foam of the present disclosure has good compression resistance and bending performance, such that the impact resistance of the rigid polyurethane foam is effectively improved.
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Inventors:
WANG LU (CN)
XU JIANCHENG (CN)
LIANG YONGJIU (CN)
DONG DEWEN (CN)
XU JIANCHENG (CN)
LIANG YONGJIU (CN)
DONG DEWEN (CN)
Application Number:
PCT/CN2023/127329
Publication Date:
May 10, 2024
Filing Date:
October 27, 2023
Export Citation:
Assignee:
CRRC CHANGCHUN RAILWAY VEHICLES CO LTD (CN)
International Classes:
C08G18/48; C08G18/42
Foreign References:
| CN115536800A | 2022-12-30 | |||
| CN111333813A | 2020-06-26 | |||
| CN113583214A | 2021-11-02 | |||
| CN102030879A | 2011-04-27 | |||
| CN103339375A | 2013-10-02 | |||
| JP2006291101A | 2006-10-26 |
Attorney, Agent or Firm:
CHOFN INTELLECTUAL PROPERTY (CN)
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