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Acrylate-functionalized alkyd compositions for fast-dry coatings

An acrylate-functional, alkyd resin technology, applied in the direction of polyester coating, coating, thin material treatment, etc., to achieve the effect of reducing dosage, improving drying time, and eliminating the need for pre-reaction

Inactive Publication Date: 2005-07-27
MOMENTIVE SPECIALTY CHEMICALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A disadvantage of the described method is that the resin first has to be carboxylated with an anhydride such as trimellitic anhydride to increase the acid number before being functionalized with glycidyl acrylate

Method used

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  • Acrylate-functionalized alkyd compositions for fast-dry coatings
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  • Acrylate-functionalized alkyd compositions for fast-dry coatings

Examples

Experimental program
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Effect test

Embodiment 1

[0074] Embodiment 1: the preparation of alkyd resin 1

[0075] Pentaerythritol (PE, 425 g), trimethylolpropane (TMP, 174g), soybean oil (2351g) and FASCAT 4350 (0.39g). The mixture was reacted at 238°C for 5 hours in this alcoholysis step. Isophthalic acid (IPA, 950 g) and refluxing solvent methyl isobutyl ketone (MIBK, 97.5 g) were then added to the mixture. The reaction was allowed to continue at 238 °C until 203 mL of condensate (water) was obtained. The acid value was measured to be 8.6 mg KOH / g. The resulting resin was allowed to cool and then separated. The product had a number average molecular weight (Mn) of 2,500 and a weight average molecular weight (Mw) of 200,000.

Embodiment 2

[0076] Example 2: Preparation of Acrylate Functional Alkyd Resin 1

[0077] To a three necked round bottom flask equipped with a mechanical stirrer, water condenser and nitrogen inlet was charged alkyd resin 1 (260 g) of Example 1 and glycidyl methacrylate (GMA, 6.58 g, 0.046 mol). The reaction mixture was stirred at 150-160° C. for 2 hours, and the acid value was measured to be 2.6 mgKOH / g. The mixture was allowed to cool to 130°C and further GMA (1.3 g) was added. The reaction was continued at 160°C for 1.5 hours to obtain a transparent resin with an acid value of 1.2.

Embodiment 3

[0078] Example 3: Coating Formulations

[0079] A coating formulation was prepared by mixing the modified alkyd resin prepared in Example 2 (10.0 g) with xylene (4.29 g) and a desiccant blend (0.34 g). At the same time, the unmodified resin of Example 1 was used to prepare a control formulation. The desiccant blend was prepared by mixing Zirconium HEX-CEM (18%, OMG Americas, 42.1 g), Cobalt TEN-CEM (12%, OMG Americas, 12.6 g) and methyl amyl ketone (MAK, 29.8 g). preparation.

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Abstract

A solvent-borne acrylate-functionalized alkyd coating composition is disclosed which includes an acrylate-functionalized alkyd, at least one drier, and an organic solvent. Also disclosed is a waterborne acrylate-functionalized alkyd coating composition including an acrylate-functionalized alkyd resin, at least one drier, and water. The acrylate-functionalized alkyd resin comprises the reaction product of (i) an alkyd resin having an acid number from greater than 0 to about 10 mg KOH / g, and (ii) a glycidyl acrylate. Also disclosed are methods of preparing acrylate-functionalized alkyd coating compositions, and coating compositions made by such methods.

Description

field of invention [0001] The present invention relates to an aqueous coating composition or an organic solvent coating composition, and more particularly, the present invention relates to an alkyd resin aqueous coating composition or an organic solvent coating composition having acrylate functionality. Background of the invention [0002] In recent years, the coatings industry has expended considerable effort to develop coating formulations that contain little or no volatile organic compounds (VOCs). Regulations limiting the VOC content of industrial coatings encourage research and development of new technologies to reduce solvent emissions from industrial solvent-borne coating operations for products such as automobiles, appliances, general metalwork, furniture, etc. However, despite the health and safety benefits of reduced organic solventborne compositions, these low VOC coating compositions must still meet or exceed the performance specifications required of solventborn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/91C09D7/12C09D167/06C09D167/08
CPCC09D167/08Y10T428/31935Y10T428/31681
Inventor 郭钊明P·V·格罗索G·E·斯皮尔曼M·D·克拉克M·D·科德何明波
Owner MOMENTIVE SPECIALTY CHEMICALS
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