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Waterborne epoxy coating composition

一种水性涂料、组合物的技术，应用在环氧树脂涂料、防腐涂料、涂层等方向，能够解决操作困难等问题

Active Publication Date: 2021-07-20
DOW GLOBAL TECH LLC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, US2012 / 0301621A discloses a coating composition comprising an aqueous dispersion of acrylic polymer particles imbibed with epoxy resin in component A, and a weight ratio of component A to component B of about Pigment and curing agent in Part B are added in a 3:2 ratio, but may experience operational difficulties when blending Part B into a similar amount of Part A

Method used

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  • Waterborne epoxy coating composition
  • Waterborne epoxy coating composition

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[0059] Some embodiments of the invention will now be described in the following examples, in which all parts and percentages are by weight unless otherwise indicated.

[0060] Styrene ("ST") was purchased from Evonik Industry.

[0061] SIPOMER PAM-4000 ("PAM-4000"), available from Solvay, is phosphoethyl methacrylate.

[0062] AMPS 2405 monomer, available from Lubrizol, is a 50% aqueous solution of sodium 2-acrylamido-2-methylpropanesulfonate (ie, the sodium salt of AMPS).

[0063] n-Dodecanethiol ("nDDM") was purchased from Sinopharm Chemical Reagent Co., Ltd. (Sinopharm Chemical Reagent Co., Ltd.).

[0064] DISPONIL FES 993 ("FES 993") surfactant, available from BASF, is a fatty polyglycol ether sulfate, sodium salt.

[0065] Ferrous sulfate heptahydrate (Fe8O 4 ·7H 2 O) purchased from Sinopharm Chemical Reagent Co., Ltd.

[0066] Sodium styrene sulfonate ("SSS"), sodium persulfate ("SPS"), t-butyl hydroperoxide ("t-BHP"), and isoascorbic acid ("IAA") were purchased from ...

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Abstract

A stable two-component water-based coating composition comprising epoxy component A comprising a water-based epoxy resin, a polymeric dispersant, and a pigment and / or extender; and comprising a curing agent Component B; providing a coating made therefrom having improved corrosion resistance; and a method of making the coating composition.

Description

technical field [0001] The present invention relates to waterborne epoxy coating compositions. Background technique [0002] Epoxy coatings are widely used in architectural coatings and protective coatings due to their chemical resistance, corrosion protection and mechanical properties. Waterborne epoxy adhesives pose far fewer environmental concerns than conventional solvent-based epoxies. [0003] Waterborne epoxy coating compositions are generally formed of two components, a waterborne epoxy component (Component A) and a hardener component (Component B). The two components are mixed before the coating composition is applied to prevent condensation. When pigments and / or extenders are included in the waterborne epoxy coating composition, a dispersant is typically used to disperse the pigments and / or extenders in Part A. Conventional anionic acrylic polymeric dispersants derived from carboxylic acid monomers can provide sufficient dispersion efficiency for pigments and / or...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00
CPCC09D163/00C08K5/42C08K5/50C09D7/65C08K3/013C08F2/18C08F2/22C08F2/38C08F212/08C08F228/02C08F230/02C08G59/22C08G59/32C08G59/50C08J2425/18C08J2433/14C08J2441/00C08J2443/02C08L33/08C08L2201/52C08L2201/54C09D5/08
Inventor 杨伟君李湖崔陇兰蒋思媛王涛蔡宇唐佳A·K·范戴克
Owner DOW GLOBAL TECH LLC