- Patent Title: Heat-ray shielding film, heat-ray shielding transparent laminated base material, and automobile mounted with the heat-ray shielding transparent laminated base material as window material, and building using the heat-ray shielding transparent laminated base material as window material
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Application No.: US16839477Application Date: 2020-04-03
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Publication No.: US11215742B2Publication Date: 2022-01-04
- Inventor: Kenichi Fujita , Keisuke Machida
- Applicant: SUMITOMO METAL MINING CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: SUMITOMO METAL MINING CO., LTD.
- Current Assignee: SUMITOMO METAL MINING CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: Oliff PLC
- Priority: JPJP2011-265339 20111202,JPJP2012-072998 20120328
- Main IPC: G02B5/20
- IPC: G02B5/20 ; B32B27/30 ; B32B27/22 ; B32B17/10 ; G02B1/04 ; B60J3/00

Abstract:
There is provided a heat-ray shielding film mainly composed of polyvinyl acetal resin and capable of exhibiting excellent heat shielding properties, and a heat-ray shielding transparent laminated base material using the heat-ray shielding film, the heat-ray shielding film including: a compound having a heat-ray shielding function; a selective wavelength absorbing material; polyvinyl acetal resin, and a plasticizer; wherein the selective wavelength absorbing material has a transmittance profile in which a transmittance of a light having a wavelength of 550 nm is 90% or more, and a transmittance of a light having a wavelength of 450 nm is 40% or less.
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