HEAT RAY ABSORBING COMPOSITE MATERIAL

WIPO Patent Application WO/1997/028226

A1

A heat ray absorbing composite material comprising a base layer made of a transparent material, a top layer made of a transparent material, and an interlayer formed between the layer, wherein the interlayer is constituted of a resin component and at least one infrared absorbing component selected between the following components (a) and (b): (a) metallic ions comprising cupric ions, and (b) granular metal oxides comprising iridium oxide, tin oxide or both. When the interlayer contains metallic ions comprising cupric ions as the infrared absorbing component, it is preferable that a compound having a phosphorus-acid group selected among phosphoric esters and phosphonic esters be also contained in the interlayer. This composite material has the property of interrupting or damping near infrared rays or rays of light having wavelenghts longer than those of infrared rays, exhibits high transmittance for visible rays, and can easily realize satisfactory heat resistance and surface hardness.

SHOUJI MASUHIRO (JP)
KATONO HIROKI (JP)
OGIHARA TAKEO (JP)
SAKAGAMI TERUO (JP)

PCT/JP1997/000193

August 07, 1997

January 29, 1997

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KUREHA CHEMICAL IND CO LTD (JP)
SHOUJI MASUHIRO (JP)
KATONO HIROKI (JP)
OGIHARA TAKEO (JP)
SAKAGAMI TERUO (JP)

G02B5/22; B32B17/10; B32B27/18; G02B5/20; (IPC1-7): C09K3/00; B32B7/02; B32B17/00; B32B27/28; G02B5/22

JPH07101756A	1995-04-18
JPS55142045A	1980-11-06
JPH02179649A	1990-07-12
JPH03215561A	1991-09-20

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