C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
C08K 5/45 (2006.01) C08F 120/06 (2006.01) C09B 49/12 (2006.01) G11B 7/244 (2006.01) G11B 7/0065 (2006.01)
Patent
CA 2635037
Holographic photochromic recording material, which is based on the photochromic dyes with attached unsaturated double bonds, such as those with the structure (see formula I) where at least one of R1 and R2 or both are -O(CH2) n OOCC(M)=CH2 with n=1, 2, 3, ...and M being -H or -CH3 while the remaining R i (or none) is selected from the series -OH, -OCH3, -OC2H5, -OC4H9, -OC5H11 ; ... -OC n H2n+1 (i={1,2); n=0, 1, 2, 3, 4, 5, ... ), and whose unsaturated double bonds are capable of participating in the chain reaction of co-polymerization with (met)-acryl ate monomers/oligomers. After preparation, which involves dissolving all the ingredients, the material allows sample fabrication via filling in the cuvette and conducting thermally induced polymerization under 100 °C. In turn, the sample allows fabrication of holographic devices via photochromic recording of holograms, with enhanced thermal stability of the recorded holograms. Specifically, long term stability of the holograms is ensured at temperature not less then 100 °C.
Boiko Yuri B.
Na
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