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Title:
ULTRAVIOLET CURABLE URETHANE ACRYLATE COMPOSITION, THIN FILM MOLDED BODY, OPTICAL FILM AND METHOD FOR MANUFACTURING THIN FILM MOLDED BODY
Document Type and Number:
WIPO Patent Application WO/2014/045782
Kind Code:
A1
Abstract:
The present invention is ultraviolet curable without comprising a photoinitiator and exhibits excellent self-healing property, yellowing resistance, transparency and adequate flexibility. An ultraviolet curable urethane acrylate composition which comprises an urethane acrylate oligomer (E) having a (meth)acryloyl group at the molecular terminals which is obtained by the addition reaction of a (meth)acrylic compound (D) having a hydroxyl group with respect to an urethane prepolymer (C) having an NCO group at the molecular terminals which is obtained by reacting a polyol (A) without an aromatic backbone and a polyisocyanate (B) without an aromatic backbone. This composition further comprises 0.2 to 80 parts by mass of an organic solvent (F) without a specific aromatic backbone and does not comprise a photoinitiator. The (meth)acrylic equivalent of (E) is 450 to 1100 g/equivalent and a tanδ peak temperature measured by dynamic viscoelasticity analysis in accordance with JIS K 0129 using a 100 μm thick film produced with the composition is -8 to 45°C.

Inventors:
HIGUCHI DAICHI (JP)
SAKAMOTO TAMOTSU (JP)
TAKIKAWA YUKO (JP)
Application Number:
PCT/JP2013/072188
Publication Date:
March 27, 2014
Filing Date:
August 20, 2013
Export Citation:
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Assignee:
DAINIPPON INK & CHEMICALS (JP)
International Classes:
C08F299/06; C08F2/48; C08J7/04; C09D175/16; G02B1/10
Domestic Patent References:
WO2013146193A12013-10-03
Foreign References:
JP2004217809A2004-08-05
JP2012036290A2012-02-23
JPH048712A1992-01-13
JP2006016416A2006-01-19
JP2011208096A2011-10-20
JP2011074266A2011-04-14
JP2003084102A2003-03-19
JP2003302501A2003-10-24
JP2013049839A2013-03-14
JP2012193220A2012-10-11
JP2013133367A2013-07-08
Attorney, Agent or Firm:
KONO MICHIHIRO (JP)
Michihiro Kono (JP)
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