A new colour developer compsn. comprises phenolic material (a), an aromatic carboxylate component (b) and divalent Zn where: (a) is a colour developer contg. min. 3.4 (pref. min. 20.4) wt% phenolic gp; (b) is carboxylic acid(s) with free acid log Kow at least 2.9 (pref. at least 3.8) (Kow = octanol/water partition coefft.). The compsn. has colour forming efficiency of at least 95 and solvent resistance of at least 30%. Prepn. of the compsn. as a homogeneous mixt. and record sheet incorporating the compsn. are also claimed.
申请公布号
DE68903588(D1)
申请公布日期
1993.01.07
申请号
DE1989603588
申请日期
1989.03.22
申请人
APPLETON PAPERS INC., APPLETON, WIS., US
发明人
MILLER, ROBERT E., APPLETON WISCONSIN 54911, US;VERVACKE, STEVEN L., APPLETON WISCONSIN 54915, US;BAHOWICK, TIMOTHY J., APPLETON WISCONSIN 54911, US;GLANZ, KENNETH D., APPLETON WISCONSIN 54914, US