Epoxy modified unsaturated polyester resin special for putty and method for making same

Abstract

This invention relates to homopolymer of multiple unsaturations aliphatic compounds and coating combination of homopolymer and their production method, especially to a lacquer putty special polyester resin and its production method. Single glyceride base group is made by graft copolymerization according to alkyd resin alcoholysis method on the basis of fundamental chain is unsaturation resin, and copolymerization epoxy base group is blocked. Molecular weight is 1000~2000, grafting ratio of alcoholic acid base group and epoxy base group is 25%~29%. The weight ratio of material recipe is that saturated anhydride 180~200 shares, unsaturation anhydride 260~320 shares, dihydric alcohol 180~200 shares, polyatomic alcohol 8~10 shares. Vegetable drying oil 23~30 shares, long chain alcohol 18~53 shares, half drying vegetable oil 32~97 shares, epoxy resin 35~42 shares, antioxidant 1.5~2.5 shares, catalyst 0.5~1 share, crosslinking monomer and diluent agent 450~500 shares. There is reasonable chemical structure in the invention, and the lacquer putty made can be strong adhesive force, good anti-chemical capability, quick drying, and it is easy to burnish and it can reach 1 hour in application.

Description

technical field [0001] The invention relates to a coating composition of homopolymers and copolymers of multiple unsaturated aliphatic compounds, which belongs to a special unsaturated polyester resin for putty. Background technique [0002] There are generally three types of resins used in putty production, alkyd resins, unsaturated polyester resins, and epoxy resins. The structural formula of an alkyd resin is usually: [0003] [0004] After the alkyd resin is made into putty, its main advantages are: easy to polish, fast drying on the surface, and the disadvantages are poor adhesion, no shock resistance, no noise resistance, no dry surface, long drying time, etc. [0005] The epoxy resin structure is generally: [0006] [0007] The main advantages of epoxy resin made into putty are: good adhesion, good chemical resistance and good mechanical properties. Disadvantages: high viscosity, it needs to be diluted with a large amount of organic solvents, after the putt...

AI Technical Summary

Problems solved by technology

Disadvantages: high viscosity, need to be diluted with a large amount of organic solvents, after the putty is scraped and applied on the substrate, the solvent is difficult to volatilize, bite the primer, the drying time is as long as 24-48 hours, the overall adhesion is poor, and it is difficult to polish

Disadvantages: the use time is short, only 5-10 minutes, not suitable for large-scale construction

It is greatly affected by the dry humidity of the construction environment, the skin is difficult to dry, not easy to polish, brittle, poor impact strength, poor shock resistance

Since the above-mentioned putty resins have their own advantages and disadvantages, there is still a lack of a putty resin with the above advantages

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