An oil-resistant anticorrosive primer and a preparation method thereof

By combining epoxy resin with polyurethane prepolymer and using modified functional fillers, the film-forming system problem of existing oil-resistant and anti-corrosion primers has been solved, achieving high-efficiency oil resistance and anti-corrosion performance as well as environmental friendliness, making it suitable for various industrial scenarios.

CN122234685APending Publication Date: 2026-06-19ANHUI BAIZHI NEW MATERIAL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-11
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing oil-resistant and anti-corrosion primer film-forming systems have insufficient cross-linking density and weak bonding force, making the paint film prone to blistering and peeling in oil media. They also have poor filler compatibility, incomplete anti-corrosion protection, lack of synergistic effect in additive formulation, and high VOC content, making it difficult to meet environmental protection requirements.

Method used

A hybrid film-forming matrix is ​​formed by compounding epoxy resin and polyurethane prepolymer. Modified functional fillers are chemically bonded to the film-forming substances. Composite anti-rust pigments achieve physical shielding and chemical passivation. Silane coupling agents improve compatibility. Environmentally friendly mixed solvents reduce VOCs. The preparation process is precisely controlled.

Benefits of technology

It improves the oil resistance, corrosion resistance and adhesion of the paint film, builds a comprehensive protection system, reduces VOC content, meets environmental protection standards, and adapts to the needs of different industrial scenarios.

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Abstract

This invention relates to the field of coating technology, specifically to an oil-resistant and anti-corrosion primer and its preparation method, comprising the following components in parts by weight: 20-45 parts of film-forming substance, 15-35 parts of modified functional filler, 0.8-4.2 parts of composite additive, and 10-28 parts of environmentally friendly mixed solvent; the film-forming substance is composed of epoxy resin and polyurethane prepolymer, wherein the epoxy resin is a compound of bisphenol A type epoxy resin and modified epoxy resin, and the modified epoxy resin is selected from at least one of ES-100 modified epoxy resin, ES-200 modified epoxy resin, ES-300 modified epoxy resin, and ES-400 environmentally friendly modified epoxy resin; the oil-resistant and anti-corrosion primer and its preparation method of this invention effectively solve the problems of performance imbalance and difficulty in balancing environmental protection and performance in existing oil-resistant and anti-corrosion primers, and significantly improve the comprehensive protective performance and application adaptability of the paint film.
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