Jamie Anthony Hawkes,David Malcolm Lewis,John Mama
申请号：
US14389950
公开号：
US20150068548A1
申请日:
2013.03.22
申请国别(地区):
US
年份:
2015
代理人:
摘要：
A colouring composition comprising: (i) at least 0.0001 wt % of a water-soluble dye compound containing one or more sulfonate and/or carboxylate groups (ii) at least 0.1 wt % urea (iii) from 0.1 to 2.5 wt % of a thiol (iv) less than 0.5 wt % ammonia and (v) less than 0.5 wt % sulfite ions.
