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Process for continuous production of epoxy resins

A technology of epoxy resin and resin, applied in coatings, electrophoretic coatings, chemical recycling, etc., can solve problems that do not involve step-by-step polymerization

Active Publication Date: 2011-02-23
BASF COATINGS GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods involve free-radical, chain-reaction polymerizations, however, do not involve stepwise polymerizations such as those for the preparation of amine-functionalized epoxy resins

Method used

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  • Process for continuous production of epoxy resins
  • Process for continuous production of epoxy resins
  • Process for continuous production of epoxy resins

Examples

Experimental program
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Embodiment Construction

[0024] The following description is exemplary only and is not intended to limit the disclosure, application or use.

[0025] figure 1 One specific embodiment of an apparatus for carrying out the disclosed method is shown. Although figure 1 Abbreviations and notations for various specific reactants are included, but it should be understood that the methods and apparatus described are not limited to these specific reactants. now refer to figure 1 , the reaction device includes at least two metering tanks 2, 4, which are used as supply sources for continuously transporting reactants and catalysts for the epoxy polymerization reaction. Epoxy-functionalized prepolymer Product C is the reaction product of an excess of polyepoxide reacted with extender and optional monofunctional reactant. The polyepoxide can be monomeric or oligomeric. An example of a polyepoxide is as figure 1 Diglycidyl ether of bisphenol A (DGEBA) or a resin derived from diglycidyl ether of bisphenol is sho...

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PUM

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Abstract

An epoxy resin with amine functionality is manufactured continuously through a first reaction zone in which an epoxide-functional resin is made by ring-opening addition, a second reaction zone in which the resin is reacted with amine to make an epoxide-functional product, and a third reaction zone in which the epoxide functional product is reacted with amine to make the epoxy resin with amine functionality. In other embodiments, some amine may be added in the first reaction zone to produce an epoxide functional product, with elimination of the second reaction zone, or all of the amine reactant may be added in the first reaction zone to produce an amine functional product, with elimination of both the second and third reaction zones. Optionally, solvent may be removed in an evaporation zone and recycled into the continuous process and further zones may be included to incorporate crosslinker, additives, and to emulsify the resin.

Description

technical field [0001] The present invention relates to a method of making amine functional resins from polyepoxides, especially epoxy resins for electrodeposition coating compositions. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not constitute prior art. [0003] Electrodeposition coating ("electrocoating") compositions and methods are currently in widespread use in industry. E-coating baths generally comprise aqueous dispersions or emulsions comprising the primary film-forming epoxy resin ("polymer" and "resin") with ion stabilization in water or a mixture of water and an organic co-solvent. " are used interchangeably in this disclosure). In automotive or industrial applications where a durable e-coat film is desired, the e-coat composition is formulated as a curable (thermoset) composition. This is usually achieved by emulsifying a cross-linking agent with the primary film-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/10C08G59/00C09D5/44
CPCB01J2219/0004C08G59/00B01J2219/00009C08G59/10C09D5/4438Y02P20/582
Inventor C·L·塔齐亚M·A·维拉洛博斯P·J·哈里斯
Owner BASF COATINGS GMBH