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Применить Всего найдено 2. Отображено 2.
06-06-2023 дата публикации

Polyurethane modified epoxy resin oil-in-water emulsion as well as preparation method and coating thereof

Номер: CN116217965A
Автор: LAN ZONGQI, CHEN LIYI
Принадлежит:

The invention provides a polyurethane modified epoxy resin oil-in-water emulsion, a preparation method of the polyurethane modified epoxy resin oil-in-water emulsion and a coating, and the polyurethane modified epoxy resin oil-in-water emulsion is characterized in that an oil phase comprises the following components in parts by mass: 50 parts of polyurethane modified epoxy resin; 1-10 parts by mass of an emulsifier; wherein the polyurethane modified epoxy resin is prepared by reacting bisphenol A type solid epoxy resin, bisphenol A type liquid epoxy resin and isocyanate-terminated polyurethane prepolymer under the condition of a carbamic acid esterification reaction catalyst. The polyurethane modified epoxy resin oil-in-water emulsion provided by the invention has good stability, the preparation method is simple, and a waterborne epoxy anticorrosive coating obtained by matching the polyurethane modified epoxy resin oil-in-water emulsion with conventional filler, a functional additive and ...

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Номер записи: 1
09-06-2023 дата публикации

Single-component polyurethane waterproof coating as well as preparation method and application thereof

Номер: CN116239943A
Автор: WU HUIQUAN, CHEN LIYI, LI SHAOFU
Принадлежит:

The invention relates to the technical field of waterproof coatings, and discloses a single-component polyurethane waterproof coating as well as a preparation method and application thereof. The method comprises the following steps: (1) under a stirring condition, carrying out first mixing on all components in a composition A to obtain a mixture I; the composition A contains polyether polyol, a hydroxyl-terminated hyperbranched polymer, a plasticizer, a pigment filler, a defoaming agent and a dispersing agent; (2) in the presence of a solvent, sequentially carrying out contact reaction on the mixture I with diisocyanate and a latent curing agent to obtain a mixture II; and (3) carrying out second mixing on the mixture II and a catalyst to obtain the single-component polyurethane waterproof coating. The single-component polyurethane waterproof coating provided by the invention is excellent in adhesive property, and other physical properties of the single-component polyurethane waterproof ...

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Номер записи: 2