Yr 1940 FIRST GENERATION VCI
Types of VCI: Amines, chromates, phosphates, and etc.
GENERAL FUNCTIONAL VCI TECHNOLOGY
Marketed Name: Dichan, Dicyclohexylamine, diisopropylamine, and etc.
Other Remarks: The US government funded a research to find a solution to prevent corrosion on the exported metal products during the World War 2 when the US military was dealing heavy corrosion problems in Southeast Asia.
Yr 1970 SECOND GENERATION VCI
Types of VCI: Nitrite based
NITRITE BASED VCI TECHNOLOGY
Marketed Name: Sodium nitrite, potassium nitrite, and etc.
Other Remarks: Currently the most widely-used VCI products and often marketed as nitrite-free and non-nitrite. (Often times nitrite are excluded yet amines are present)
Yr 2000 THIRD GENERATION VCI
Types of VCI: 100% no nitrite, 100% no secondary amines, and/or biodegradable, etc.
“GREEN” VCI RAW MATERIAL TECHNOLOGY
Marketed Name: Food grade, bio-based, organic salts, plant extracts, and etc.
Other Remarks: GreenVCI® is a 3rd generation eco-friendly VCI technology providing economical and customized corrosion protection solution.
(100% no benzotriazole, 100% no nitrite, 100% no amines, anti-static functions, food grade based, plant extract based, pH changes, specific VCI performance industrial standards and automobile requirements, UV protection functions, biodegradable functions, color changes, physical property alterations, and etc.)