MANUFACTURING METHOD OF BIOEPOXY RESIN WITHOUT ENVIRONMENTAL HORMONE RELEASING

The present invention relates to a manufacturing method of a bioepoxy resin comprising a castor oil modified hardening agent and an epoxidized vegetable oil without releasing environmental hormone, which comprises: a manufacturing step of a bifunctional body having amine and diisocyanate at the terminal end for evaporating a reactive solvent after adding a reactive solvent, diamine, diisocyanate, and a condensation catalyst to a reactor attached with a thermometer, a stirrer, and a condensate condenser and reacting; a manufacturing method of a castor oil modified hardening agent as adding a castor oil and a condensation catalyst to the reactor and reacting; a manufacturing method of an epoxidized vegetable oil for putting vegetable oil and organic acid in the reactor, stirring as elevating the reactor temperature of 40-60°C, adding an oxidizing agent to the same, maintaining the temperature of 40-60°C and lasting the reaction, neutralizing the reaction product as adding distilled water after completing the reaction, adding a low boiling point organic solvent and inducing a phase separation, and removing a water layer; and a bioepoxy mixing step for stirring as adding the castor oil modified hardening agent to the epoxidized vegetable oil. A manufacturing method of a bioepoxy resin without releasing environmental hormone of the present invention with excellent mechanical material properties and water resistance can easily manufacture a bioepoxy resin for use of an adhesive. 온도계(thermometer)와 교반기(mechanical stirrer), 응축콘덴서(reflux condenser)를 장착한 반응기(reactor)에 테트로히드로퓨란(tetrahydrofuran)이나 톨루엔(toluene)과 같은 반응성용매(reactive solvent) 400~600중량부, 에틸렌디아민(ethylenediamine)이나, 프로필렌디아민(propylenediamine), 부틸렌디아민(butylenediamine), 헥사메틸렌디아민(hexamethylendiamine) 등과 같은 디아민 60~117중량부와, 1,4-페닐렌 디이소시아네이트(1,4-phenylene diisocyanate)나, 4,4'-디이소시아네토디씨크로헥실 메탄(4,4'-diisocyanatodi cyclohexyl methane), 톨리엔 디이소시아네이트(tolylene diisocyanate), 메틸렌디페닐 디이소시아네이트(Methylene diphenyl diisocyanate) 등의 디이소시아네이트 160~250중량부 및 디부틸 틴 디라울레이트(dibutyl tin dilaurate)나, 디부틸 틴 말레이트(dibutyl tin maleate), 1,4-디아조바이시크로[2,2,2] 옥탄[1,4-diazabicyclo [2,2,2] octane] 등의 축합촉매(condensation catalyst) 0.01~0.05중량부를 가하고 6~24시간 반응 한 다음, 반응성용매를 감압 하에서 증발시켜서 220.01~367.05중량부의 아민과 디이소시아네이트를 말단에 갖는 이관능체 제조단계와; 온도계와 교반기, 응축콘덴서를 장착한 반응기에 400~600중량부의 피마자유와, 상기 아민과 디이소시아네이트를 말단에 갖는 이관능체 제조단계에서 제조된 220.01~367.05중량부의 아민과 디이소시아네이트를 말단에 갖는 이관능체에, 0.01~0.05중량부의 축합촉매를 첨가하고, 6~24시간 반응하여 620.02~967.1중량부의 피마자유변성 경화제(curing agent) 제조단계와; 온도