| 摘要 |
<p>PCT No. PCT/GB87/00447 Sec. 371 Date Apr. 7, 1988 Sec. 102(e) Date Apr. 7, 1988 PCT Filed Jun. 25, 1987 PCT Pub. No. WO88/00223 PCT Pub. Date Jan. 14, 1988.A photochromic ink composition which comprises a solution of a 1,2-dihydroquinoline (DHQ) in a polymer solution, the dihydroquinoline being sensitive or sensitized to ultra-violet light.</p> |
