Rosin woyera wamadzi ndi hydrogenated rosin amasinthidwa ndi rosin wachilengedwe.
Rosin si gulu limodzi, koma mankhwala osakaniza:
Rosin ili ndi pafupifupi 80% ya rosin anhydride ndi rosin acid, pafupifupi 5 mpaka 6% ya resin hydrocarbon, pafupifupi 0.5% yamafuta osakhazikika komanso kufufuza zinthu zowawa.
Rosin wa haidrojeni:
Popeza rosin ndiyosavuta kuyimitsa, ndipo utomoni wa hydrocarbon m'maselo ake umakhala ndi ma conjugated double bonds, umakhala ndi reactivity yayikulu, kusakhazikika komanso okosijeni kosavuta. Kuti apititse patsogolo kukana kwake kwa okosijeni, rosin wa hydrogenated amatha kukonzedwa pochita rosin ndi haidrojeni pansi pamikhalidwe yopangitsidwa.
Madzi oyera rosin:
Rosin yoyera yamadzi ndi polyol rosin yokhala ndi utoto wopepuka kwambiri. Amapangidwa kuchokera ku rosin woyengedwa monga zopangira zoyambira kudzera mu hydrogenation, esterification ndi kukhazikika. Zili ndi ubwino wa kuyera kwa madzi, kukana kukalamba bwino komanso kugwirizanitsa bwino ndi zipangizo za polima, zomwe zingathe kukwaniritsa zosowa zapadera za makampani omatira.
Zikuoneka kuti kukonzekera madzi rosin woyera ayenera kudutsa sitepe ya hydrogenation rosin, koma si malire sitepe ya hydrogenation, ndi kwambiri woyengeka mankhwala.
