Title:
(METH)ACRYLIC RESIN COMPOSITION FOR MILLIMETER WAVE RADAR COVER, MILLIMETER WAVE RADAR COVER, MILLIMETER WAVE RADAR DEVICE, AND VEHICLE
Document Type and Number:
Japanese Patent JP2020147680
Kind Code:
A
Abstract:
To provide a (meth)acrylic resin composition for millimeter wave radar which is excellent in millimeter wave permeability and weather resistance.SOLUTION: A (meth)acrylic resin composition for millimeter wave radar cover contains a (meth)acrylic polymer (P) containing 80-100 mass% of a methyl methacrylate-derived repeating unit, in which a content ratio of the (meth)acrylic polymer (P) is 90 mass% or more with respect to 100 mass% of the total mass of the (meth)acrylic resin composition, and a molding obtained by molding the (meth)acrylic resin composition has a dielectric constant at a measurement frequency when measured at frequencies of 70-90 GHz of 2.80 or less and dielectric loss tangent when measured at frequencies of 70-90 GHz of 0.006 or less.SELECTED DRAWING: Figure 1
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Inventors:
HOJO ATSUYUKI
Application Number:
JP2019046255A
Publication Date:
September 17, 2020
Filing Date:
March 13, 2019
Export Citation:
Assignee:
MITSUBISHI CHEM CORP
International Classes:
C08F220/14; G01S7/03; H01Q1/22; H01Q1/32; H01Q1/42
Domestic Patent References:
| JP2002135030A | 2002-05-10 | |||
| JP2007013722A | 2007-01-18 |
Foreign References:
| WO2017104714A1 | 2017-06-22 | |||
| WO2018074118A1 | 2018-04-26 |