Ko te Kounga Runga Rawa Waiwai Kore Hanga Resin mo te Kaata
Ko te "Polyester" he karaehe o nga pūhui polymer kei roto nga here ester e wehea ana mai i nga kapia penei i te kapia phenolic me te kapia epoxy. Ko tenei puhui polymer he mea hanga e te tauhohenga polycondensation i waenga i te waikawa dibasic me te waipiro dibasic, a, i te wa e mau ana tenei polymer polymer he hononga takirua, ka kiia ko te polyester unsaturated, a ka rewa tenei polyester unsaturated i roto i te monomer e whai mana ana ki te polymerised ( te tikanga styrene).
Ka rewa tenei polyester haunga i roto i te monomer (te nuinga o te styrene) e whai mana ana ki te polymerise, a ka huri hei wai kakao, ka kiia he kapia polyester unsaturated (Unsaturated Polyester Resin or UPR mo te poto).
No reira ka taea te tautuhi i te kapia polyester haunga he wai pokarekare i hangaia e te polycondensation o te waikawa dibasic me te waipiro dibasic kei roto he waikawa dibasic haunga, he waipiro dibasic ranei i roto i te puhui polymer raina rewa i roto i te monomer (te nuinga o te styrene). Ko nga kapia polyester kore, e 75 paiheneti o nga kapia e whakamahia ana e matou ia ra.