Electrophoretic paint and preparation method thereof
A technology of electrophoretic coatings and epoxy resins, which is applied in electrophoretic coatings, epoxy resin coatings, antifouling/underwater coatings, etc., and can solve the problems of not considering environmental hazards, single branched chain functional groups, and oil stains sticking to it. , to achieve the effect of improving the disadvantages of the coating film, high gloss and easy cleaning
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Embodiment 1
[0057] The preparation of low-temperature polyfunctional block type isocyanate curing agent, described preparation method comprises the following steps:
[0058] In a four-neck flask (manufactured by Collins of Shanghai Gaoxin Chemical Glass Co., Ltd.) with a condenser and nitrogen protection, put 454.5g of diphenylmethane diisocyanate (purchased from Wanhua Chemical Group Co., Ltd.) and 107.4g of formazan Base isobutyl ketone (purchased from Jinan Century Tongda Chemical Co., Ltd.), the temperature was raised to 40 ° C, and 301.4 g of methyl ethyl ketone oxime (purchased from Baishun (Beijing) Chemical Technology Co., Ltd.) was added dropwise, controlled at 45 ± 3 ° C, NCO The equivalent is controlled at 250-270; add 106.7g of ethylene glycol butyl ether (purchased from Jinan Century Tongda Chemical Co., Ltd.), after the addition, the temperature rises to 100°C, and it is kept at 100°C for 1 hour. The actual NCO equivalent is 48120, and the result is >42000 , adding 30.1 g of...
Embodiment 2
[0072] The preparation of low-temperature polyfunctional block type isocyanate curing agent, described preparation method comprises the following steps:
[0073] In a four-necked flask (manufactured by Collins of Shanghai Gaoxin Chemical Glass Co., Ltd.) with a condenser and nitrogen protection, put 480.2g of diphenylmethane diisocyanate (purchased from Wanhua Chemical Group Co., Ltd.) and 123.2g of formazan Base isobutyl ketone (purchased from Jinan Century Tongda Chemical Co., Ltd.), the temperature was raised to 40 ° C, and 315.3 g of methyl ethyl ketone oxime (purchased from Baishun (Beijing) Chemical Technology Co., Ltd.) was added dropwise, controlled at 45 ± 3 ° C, NCO The equivalent is controlled at 250-270; add 127.3g of ethylene glycol butyl ether (purchased from Jinan Century Tongda Chemical Co., Ltd.), after the addition, the temperature rises to 100°C, and it is kept at 100°C for 1 hour. The actual NCO equivalent is 48120, and the result is >42000 , add 32.5g of m...
Embodiment 3
[0087] The preparation of low-temperature polyfunctional block type isocyanate curing agent, described preparation method comprises the following steps:
[0088]In a four-necked flask (manufactured by Collins of Shanghai Gaoxin Chemical Glass Co., Ltd.) with a condenser and nitrogen protection, put 421.6g of diphenylmethane diisocyanate (purchased from Wanhua Chemical Group Co., Ltd.) and 108.2g of formazan Base isobutyl ketone (purchased from Jinan Century Tongda Chemical Co., Ltd.), the temperature was raised to 40 ° C, and 304.5 g of methyl ethyl ketone oxime (purchased from Baishun (Beijing) Chemical Technology Co., Ltd.) was added dropwise, controlled at 45 ± 3 ° C, NCO The equivalent is controlled at 250-270; add 103.5g of ethylene glycol butyl ether (purchased from Jinan Century Tongda Chemical Co., Ltd.), after the addition, the temperature rises to 100°C, and it is kept at 100°C for 1 hour. The actual NCO equivalent is 48120, and the result is >42000 , add 42.7g of me...
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