Enshonga nkuru z‘okutegyeka omu kuhanga Bisphenol A
Aha bikwatiraine n’obuyonjo bw’ebintu ebikuru, phenol na acetone, nk’ebintu ebikuru ebikuru eby’okukora bisphenol A, nibyetenga okutegyeka munonga obuyonjo bwabyo. Obuyonjo bwa phenol tibushemerire kuba ahansi ya 99.5%, kandi obuyonjo bwa acetone bushemerire kuhika ahari 99%. Ebintu ebikozirwe omu muringo gw’obuyonjo bw’ahaiguru nibibaasa kukyendeeza aha kutaahataaha kw’obukooko aha nkora y’okukora n’okureeba ngu enkora yaagyenda gye.
Okutegyeka ebiriisa by’okugarukamu ni kikuru munonga. Ebiriisa by’okugarukamu kw’okushohoza okutwarira hamwe biri ahagati ya 40 – 60°C. Omu nkora y‘obutagatsi egi, omubaro gw‘okugarukamu n‘okutoorana ebirugiremu nibibaasa kuhika aha nkora nungi. Ebirikuba biri ahaiguru munonga nari ahansi munonga nibiija kukwata aha ntunguuka n’omutindo gwa bisphenol A BPA. Omurimo n’okutoorana kw’ekirungo nibimanyisa ahu okugarukamu kurikuza. Ebirikukoresibwa munonga ebirikureetaho asidi nk‘ebiriisa bya sulfuric acid nibyetenga okutaho okuhikire kw‘okutaho asidi yaabyo n‘omubaro gwabyo. Okutwarira hamwe, okuteerana kwa sulfuric acid nikuhindukahinduka omu nkora emwe, kandi omubaro n’ekicweka ky’omutaano eky’omubaro gwona gw’ebintu ebikozirwe, kugira ngu kireebekye ngu ekirikureetaho okuhinduka nikikora gye. Okugyemeserezibwa kw‘okugarukamu nakwo nikukwata aha kureetaho bisphenol A BPA. Omubaro gw’okuteera oguhikire ni 0.5 – 1.5 MPa. Embeera y‘okugyemeserezibwa egumire neehwera omu kuguma n‘okuhama kw‘enkora y‘okugarukamu kandi neetunguura okutwarwa kw‘ebintu bingi n‘okutunguuka kw‘okugarukamu. Omubaro gw‘ebintu nigukwatagana butunu n‘oburungi bw‘okugarukamu. Omubaro gwa molar gwa phenol na asetoni nigukira kukyeberwa ahari 2.5 – 3.5:1. Omubaro oguhikire nigubaasa kureetera ebihingwa ebikozirwe omu nkora omu bwijwire, kwongyera aha kutunga bisphenol A BPA, n’okukyendeeza aha bihingwa ebirikuruga omu bihingwa.

Bisphenol A BPA okuhindura nikwongera amaani g’ebyoma, okuzibira okushara n’okujwara, okweteekateekire kushoboorora oburemeezi oburikwetengyesa.

Waaba nooyenda kugura ebintu by’emibazi ebirikwesigwa, nyabura we ronda Shandong Pulisi Chemical Co., Ltd., erikuta omutima aha “by’emibazi y’omutindo” kandi ebaire neekora kumara emyaka 20.