MAADEN KOEN,BOUWSTRA JOHANNA AALTJE,JISKOOT WIM,TAS NIELS
申请号：
NL2007382
公开号：
NL2007382C
申请日:
2011.09.09
申请国别(地区):
NL
年份:
2013
代理人:
摘要：
The invention is directed to a process to prepare an object coated with an active agent by contacting an object, wherein the surface of the object has a pKa of between 4 and 7.4, with a buffered aqueous coating solution comprising a negatively charged active agent and wherein said buffered solution has a pH below the pKa, or by contacting an object, wherein the surface of the object has a pKa of between 7.4 and 10, with a buffered aqueous coating solution comprising a positively charged active agent and wherein said buffered solution has a pH above the pKa of the surface. The surface of the object may also be modified with organic molecules comprising ionisable groups which are bases and ionisable groups which are acids.
