HIGH-FLATNESS THERMOPLASTIC POLYURETHANE FOAM PRODUCT AND PREPARATION METHOD AND USE THEREFOR

WIPO Patent Application WO/2021/104536

A1

Disclosed in the present invention are a high-flatness thermoplastic polyurethane foam product and a preparation method and a use therefor. The product is melted together by means of foaming aliphatic thermoplastic polyurethane elastomer beads having a melting range of 20-50°C and a melting point of 90-160°C by means of a physical gas to prepare foamed aliphatic thermoplastic polyurethane elastomer beads, and then heating the foamed aliphatic thermoplastic polyurethane elastomer beads by means of a heat source. The density of the high-flatness thermoplastic polyurethane foam product is 0.08-0.8 g/cm3, and the flatness thereof as measured by fixed-length ruler measurement is less than 2 mm. The thermoplastic polyurethane foam product is provided with a relatively high flatness, and the surface of the product is further caused to have a more diverse design, and to have a high resilience.

SONG HONGWEI (CN)
YANG CHONGCHONG (CN)
WANG GUANGFU (CN)
REN GUANGLEI (CN)
LIU JIANWEN (CN)

PCT/CN2021/070856

June 03, 2021

January 08, 2021

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MIRACLL CHEMICALS CO LTD (CN)

C08G18/75; C08J9/16; C08J9/12; C08J9/18; C08J9/228; C08L75/04

WO2007082838A1	2007-07-26
WO2010136398A1	2010-12-02

CN109983062A	2019-07-05
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CN101370861A	2009-02-18
CN108676329A	2018-10-19
CN103804889A	2014-05-21
CN103642200A	2014-03-19
CN108884260A	2018-11-23
CN102712776A	2012-10-03
EP1031602A1	2000-08-30
CN102276785A	2011-12-14

YANTAI SHANGHE INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)

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