NON PHOSPHOURS COMPOUND FOR PREVENTING SCALE
申请公布号:KR850001732(B1)
申请号:KR19840000142
申请日期:1984.01.14
申请公布日期:1985.12.07
发明人:SON, CHANG-HYON
分类号:C02F5/00;(IPC1-7):C02F5/00
主分类号:C02F5/00
摘要:This composition helps to prevent scaling in boilers. This non- phosphorus composition consists of 20-80 wt. pts. sodium boric acid, 10-60 wt. pts. ethylenediamine tetraacetic acid deriv., 1-15 wt. pts. anion surface active agent, 0.2-20 wt. pts. molybdenum deriv. and 1- 20 wt. pts. tannin deriv. The sodium boric acid was the anhydride. This composition prevents scale in boilers and is an effect active anti-corrosive agent.
Cabinet for an input-output device
CONSTRUCAO PARA TETOS E PAREDES
MATERIAL DE REGISTRO ELETROFOTOGRAFICO
ALTO-FORNO E CONJUNTO DE REVESTIMENTO PARA UMA VENTANEIRA DE ALTO-FORNO
MAQUINA CORTADORA DE FRUTAS,VERDURAS E LEGUMES
MISTURA DESPOLARIZANTE PARA TRATAMENTO ELETROLITICO DE SOLOS SUJEITOS A UM SISTEMA DE ATERRAMENTO
SEPARATION OF ISOTOPE BY LASER AND WORKING SUBSTANCE
METHOD AND DEVICE FOR HEATING WITH LOW FREQUENCY BILLET FOR EXTRUDING ALUMINUM