Water-soluble polyurethane modified acrylic acid polymer as well as preparation method and application thereof

Abstract

The invention discloses a water-soluble polyurethane modified acrylic acid polymer. The structure of the polymer is represented by a general formula I which is shown in the description, wherein each substituent group in the formula is defined as the description. The water-soluble polyurethane modified acrylic acid polymer is used for preparing coatings.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a water-soluble polyurethane-modified acrylic acid polymer, a preparation method and its application in water-based wine bottle coatings with high ethanol resistance. Background technique [0002] On January 26, 2015, the Ministry of Finance and the State Administration of Taxation jointly issued the "Notice on Levying Consumption Tax on Coatings": In order to promote energy conservation and environmental protection, with the approval of the State Council, the consumption tax on coatings will be levied on February 1, 2015. , entrusted processing and import links, the applicable tax rate is 4%. At the same time, it is stated that the consumption tax will be exempted for coatings with a volatile organic compound (VOC) content of less than 420 grams per liter (inclusive) in the construction state. It is expected that in the next few years, while the output of coatings ...

AI Technical Summary

Problems solved by technology

[0004] The one-component water-based wine bottle paint prepared by polyurethane water dispersion, water-soluble polyacrylic resin, urethane type and modified acrylic resin has poor molecular weight, alcohol resistance, water resistance and abrasion resistance on the glass substrate. and low hardness

The short pot life of water-based two-component room temperature curing glass paint will cause certain difficulties in construction, and it will also cause problems such as waste of paint and uneven mixing on the construction site.

Especially in the case of high ethanol resistance requirements for water-based wine bottle coatings, it is required that the coatings be soaked in 65% ethanol for more than 6 hours without discoloration and peeling off. The coatings currently on the market basically cannot meet the needs

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