2 WATER-BASED TWO COMPONENT PROTECTIVE COATING COMPOSITIONS

• Main Authors: NEDERLOF ARNOLD JOHAN, VAN VLIET CORNELIS HUBERTUS, DE JONG JAN, VAN ZANTEN CORS DANIEL
• Format: Patent
• Language: English; Korean
• Published: 30.03.2002
• Edition: 7
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; USE OF MATERIALS THEREFOR; WOODSTAINS

PURPOSE: Provided are protective coating compositions that are generally used as shop primers with zinc content in the higher portion of the certain range, and are used as heat-resistant protective coating to protect steel elements to be subjected to high temperatures. CONSTITUTION: The protective coating compositions essentially consists of the following components in aqueous solution: a) the first component comprising (i) at least one omega-aminoalkyl trialkoxy silane; (ii) at least one strong or relatively strong acid, in an amount sufficient to obtain a pH of 7 to 9; (iii) at least one compound each having as terminal groups a trialkoxy or alkyldialkoxy silane and an epoxy group, in an amount such that the ratio of the amine hydrogen equivalent of the omega-aminoalkyl trialkoxysilanes to the epoxy equivalent of the said compound is of 3 to 7; the reaction of (i) to (iii) forming a binder; (iv) one or more pigments, at least 25 wt.% of the pigments having conductive properties; b) the second component comprising (v) finely divided zinc, the weight ratio of zinc to pigments being of from 1:10 to 10:1 ; the weight ratio of solid binder to the total of zinc and pigments being of 1:1 to 1:75. 수계성 보호 코팅 조성물은 결합제로서, 산용액중의 아미노실란을 준 화학량론적 양의 에폭시 실란과 반응시켜 얻은 생성물 및, 미세하게 분쇄된 아연 및 분산된 안료를 더 포함한다.