| abstract |
This refers to compounds of formula (1), in which: X represents CHR², O, OCO or CH = CH; Y represents O, COO or OCOO; R¹ represents H or (CH₂) ₚCH₃; R² represents a phenyl group or H; m = 12-18; n = 0 - 14; p = 12-18; and provided that when n = 0, X represents CHR² or CH = CH. This also refers to thermochromic pigment microcapsules comprising compounds of formula (1) according to the present, to thermochromic pigment microcapsules comprising said thermochromic pigment compositions, to ink compositions comprising said thermochromic pigment microcapsules, and lastly, to the writing instruments comprising said ink compositions. |