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Title:
PHOTOCHROMIC COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2013/099640
Kind Code:
A1
Abstract:
[Problem] To provide a photochromic composition which serves as an adhesive layer for bonding an optical sheet or film that is formed of a polycarbonate resin or the like, and which is characterized in that a laminated sheet produced using the photochromic composition exhibits excellent adhesiveness, heat resistance, photochromic properties and perspiration resistance. [Solution] Provided is a photochromic composition which is characterized by containing (A) a polyurethane-urea resin that has a urea bond in a molecular chain, while having a tetrahydrofuran-insoluble fraction of 20.0-90.0% by mass and (B) a photochromic compound.

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Inventors:
MORI KATSUHIRO (JP)
HIRAREN TOSHIMITSU (JP)
SHIMIZU YASUTOMO (JP)
TERANISHI KAZUHIRO (JP)
Application Number:
PCT/JP2012/082393
Publication Date:
July 04, 2013
Filing Date:
December 13, 2012
Export Citation:
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Assignee:
TOKUYAMA CORP (JP)
International Classes:
C09K9/02; C08L75/04; G02B5/23; G02C7/10; C09J11/06; C09J175/02; C09J175/04
Domestic Patent References:
WO1994022850A11994-10-13
WO1996014596A11996-05-17
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Other References:
"Adhesion Handbook, Third Ed.,", 1996, article "Table 4.3", pages: 332
See also references of EP 2799514A4
Attorney, Agent or Firm:
MAEDA & SUZUKI (JP)
Maeda and a Suzuki international patent business corporation (JP)
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