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Metal phthalocyanines as infrared absorbers

  • US 3,291,746 A
  • Filed: 08/26/1963
  • Issued: 12/13/1966
  • Est. Priority Date: 08/26/1963
  • Status: Expired due to Term
First Claim
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1. A COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF POLY (METHYLMETHACRYLATE), WHICH PER SE IS SUBSTANTIALLY TRANSPARENT IN THE VISIBLE SPECTRUM, HAVING INCORPORATED THEREIN FROM 0.01 GRAM TO ABOUT 0.184 GRAM PER SQUARE FOOT OF A PHTHALOCYANINE OF THE FORMULA:

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