... variegation promotion dispersing agent Application: it can show the excell dispersantAS-511(BTN) Wet type PU variegation ... promotion dispersing agent Application: it can show the excellent wetting ability when in the wet ... type ,so when youadd it ,it can show pealike colour and vested in wet type PU ... ) in the wet type PU ,it can show the blacker than black,whiterthan white. polyether polyol ...