Novel papermaking wet part deformer

Abstract

The invention relates to a preparation method of a novel papermaking wet part deformer, belonging to the field of special chemical preparations for papermaking. The novel papermaking wet part deformeris characterized by comprising the following components: 5-99 percent of fatty acid methyl ester derivative (1), 0.1-80 percent of polyether (2), 0.1-70 percent of modified polyether (3) and 0.1-20 percent of natural oil (4), wherein the fatty acid methyl ester derivative has a general structure formula of R<1>CO(EO)x(PO)yOCH3, a molecular weight of 300-3000 and a cloud point of 20-80 DEG C and is a product prepared by an addition reaction of ethylene oxide (EO) and propylene oxide (PO) under the action of a catalyst by using fatty acid methyl ester as an initiator; the polyether has a structural general formula of R<2>(M(EO)m(PO)nH)a, a molecular weight of 500-8,000 and a cloud point of 10-80 DEG C; and the modified polyether has a structural general formula of R<2>(M(EO)m(PO)nR<3>)a. The novel papermaking wet part deformer is not only suitable for a papermaking wet part working procedure, but also suitable for the treatment of papermaking waste water and the elimination of other water-phase foams.

Description

technical field [0001] The invention relates to the preparation of a novel paper-making wet-end defoamer. The defoamer is a fine chemical additive. Therefore, the preparation of a novel paper-making wet-end defoamer belongs to the field of special chemicals for papermaking. Background technique [0002] Papermaking is a key industry in the production of the national economy. In the paper industry, a variety of surfactants are often used, such as sizing agents, retention aids, filter aids, strengthening agents, deinking agents, dyes, etc. Active agents, they are also easy to foam during the operation of the paper machine. With the development of large industries, the speed of the paper machine is getting faster and faster. At present, the speed of the high-speed paper machine in production has reached 1800m / min. Paper whitening water is generally used in a closed cycle. During this process, if the air bubbles are not driven away in time, "pit" will be formed on the cardboard...

AI Technical Summary

Problems solved by technology

[0009] The purpose of this invention is to provide a new type of wet-end defoamer to solve the problem of harmful foam in paper production

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