Reversibly thermochromic ultraviolet ray-hardening ink...

Details Reversibly thermochromic ultraviolet ray-hardening ink... Reversibly thermochromic ultraviolet ray-hardening ink...

2005-09-20

2005-09-20

Berman, Susan (Department: 1711)

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

C428S001300, C428S402200, C428S913000, C522S064000, C522S075000, C522S079000, C522S103000, C522S182000

Reexamination Certificate

active

06946168

ABSTRACT:
This invention provides a reversibly thermochromic ultraviolet ray-hardening type ink having good color change sensitivity and excellent light resistance and fastness, and a reversibly thermochromic laminate produced using the same. The present invention also provides a reversibly thermochromic laminate produced by forming a reversibly thermochromic layer on a support using the same. The ink comprises:(1) a microencapsulated pigment comprising a reversibly thermochromic composition comprising (A) an electron-donating compound, (B) an electron-accepting compound and (C) a color change temperature-controlling agent which controls color reaction generation temperature of the former two compounds; and (D) a light resistance-providing agent represented by a specific formula, and(2) a photo-polymerizable composition comprising an ultraviolet ray absorbent, a reactive oligomer, a reactive monomer, and an acylphosphine oxide photo-polymerization initiator,wherein said microencapsulated pigment is dispersed in said photo-polymerizable composition.

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