Ob leeg dej dawb rosin thiab hydrogenated rosin yog hloov kho rosin ntawm ntuj rosin.
Rosin tsis yog ib qho kev sib xyaw ua ke, tab sis cov tshuaj sib xyaw:
Rosin muaj li ntawm 80% ntawm rosin anhydride thiab rosin acid, li 5 mus rau 6% ntawm resin hydrocarbon, txog 0.5% ntawm cov roj volatile thiab taug qab iab tshuaj.
Hydrogenated rosin:
Txij li rosin yooj yim rau crystallize, thiab cov resin hydrocarbon nyob rau hauv nws cov qauv molecular muaj conjugated ob daim ntawv cog lus, nws muaj siab reactivity, instability thiab yooj yim oxidation. Txhawm rau txhim kho nws cov oxidation tsis kam, hydrogenated rosin tuaj yeem npaj los ntawm reacting rosin nrog hydrogen nyob rau hauv siab catalyzed tej yam kev mob.
Dej dawb rosin:
Dej-dawb rosin yog polyol rosin nrog lub teeb heev. Nws yog tsim los ntawm refined rosin ua cov khoom siv raw los ntawm hydrogenation, esterification thiab stabilization. Nws muaj qhov zoo ntawm cov dej dawb, kev laus zoo thiab kev sib raug zoo nrog cov ntaub ntawv polymer, uas tuaj yeem ua tau raws li qhov tshwj xeeb xav tau ntawm kev lag luam nplaum.
Nws tuaj yeem pom tau tias kev npaj cov dej dawb rosin yuav tsum mus dhau ntawm cov kauj ruam ntawm hydrogenation rosin, tab sis nws tsis txwv rau cov kauj ruam ntawm hydrogenation, nws yog ib qho khoom zoo heev.
