WO2023131903 - ARTICLES AND STRUCTURES OF WAVE ABSORPTION MATERIAL
National phase entry:
Publication Number
WO/2023/131903
Publication Date
13.07.2023
International Application No.
PCT/IB2023/050110
International Filing Date
06.01.2023
Title **
[English]
ARTICLES AND STRUCTURES OF WAVE ABSORPTION MATERIAL
[French]
ARTICLES ET STRUCTURES DE MATÉRIAU D'ABSORPTION D'ONDES
Applicants **
SHPP GLOBAL TECHNOLOGIES B.V.
Inventors
CHENG, Yunan
ZHENG, Yun
Priority Data
22150515.9
07.01.2022
EP
Application details
| Total Number of Claims/PCT | * |
| Number of Independent Claims | * |
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| Number of Multi-Dependent Claims | * |
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International Searching Authority |
EPO
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| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
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| Type of Assignment |
The Standard Agent's Assignment
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| Applicant's Legal Status |
Legal Entity
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| Entry into National Phase under |
Chapter I
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| Patent Delivery |
Send the Letters Patent by Courier
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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 2016 | |
| EPO | Filing, Examination, Granting | 8126 | |
| Japan | Filing, Examination, Granting | 2181 | |
| South Korea | Filing, Examination, Granting | 2020 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
19,083
The term for entry into the National Phase has expired. This quotation is for informational purposes only
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Abstract[English]
Thermoplastic compositions include: from about 40 wt% to about 89.9 wt% of at least one crystalline or semi-crystalline polymer; from about 10 wt% to about 20 wt% of at least one amorphous polymer; from about 0.1 wt% to about 20 wt% of a conductive carbon filler; and from 0 wt% to about 30 wt% of a reinforcing filler comprising glass fiber, glass flake, or a combination thereof. The thermoplastic composition has an absorption of at least 65%, a reflection of 35% or lower, and a transmission of 1% or lower, wherein absorption, reflection and transmission are tested in transmission mode in accordance with a Free Space Method at a frequency of from 75 gigahertz (GHz) to 110 GHz. The compositions are particularly suitable for use in radar absorbers for a radar or automobile sensor application.[French]
La présente invention concerne compositions thermoplastiques qui comprennent : d'environ 40 % en poids à environ 89,9 % en poids d'au moins un polymère cristallin ou semi-cristallin ; d'environ 10 % en poids à environ 20 % en poids d'au moins un polymère amorphe ; d'environ 0,1 % en poids à environ 20 % en poids d'une charge de carbone conductrice ; et de 0 % en poids à environ 30 % en poids d'une charge de renforcement comprenant une fibre de verre, un flocon de verre ou une combinaison de ceux-ci. La composition thermoplastique a une absorption d'au moins 65 %, une réflexion de 35 % ou moins, et une transmission de 1 % ou moins, l'absorption, la réflexion et la transmission étant testées en mode de transmission conformément à un procédé d'espace libre à une fréquence de 75 gigahertz (GHz) à 110 GHz. Les compositions sont particulièrement appropriées pour être utilisées dans des absorbeurs radar pour une application de capteur radar ou automobile.