Compound for color-producing composition, and recording...

Details Compound for color-producing composition, and recording... Compound for color-producing composition, and recording...

2001-03-02

2009-12-22

Oh, Taylor Victor (Department: 1625)

Record receiver having plural interactive leaves or a colorless

Having a colorless color-former, developer therefor, or...

Identified color-former

C548S506000, C548S507000, C548S495000, C548S253000, C548S118000, C560S157000, C560S158000, C560S163000, C560S165000

Reexamination Certificate

active

07635662

ABSTRACT:
A urea-urethane compound having one or more urea groups and one or more urethane groups in the molecular structure, the number of said urea groups (A) and the number of said urethane groups (B) satisfying the following numerical formula:in-line-formulae description="In-line Formulae" end="lead"?10≧(A+B)≧3in-line-formulae description="In-line Formulae" end="tail"?wherein each of A and B is an integer of 1 or more.

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