Novel acrylic acid modified alkyd resin and method for preparing same

A technology of alkyd resin and acrylic acid, which is applied in the field of resin, can solve problems such as poor acid and alkali resistance, and achieve excellent mechanical properties, good flexibility, and excellent dryness

Active Publication Date: 2013-03-27
SHANGHAI ZHENHUA HEAVY IND CHANGZHOU COATINGS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The task of the present invention is to provide an acrylic modified alkyd resin to solve the problem of poor acid and alkali resistance of common acrylic modified alkyd resins on the market

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Stir the mixed solution of xylene and ethyl acetate to heat up, and keep it warm for 0.5 hours when the temperature reaches 100°C, then start to add the initiators benzoyl peroxide (BPO), methyl methacrylate (MMA), Styrene (St), n-butyl acrylate (n-BA) and methacrylic acid (MA) are a mixture for copolymerization, the dropping time is controlled within 2 hours, and finally acrylic acid prepolymer is prepared;

[0035] The formula component content of the acrylic acid prepolymer is calculated by weight percent: xylene 51.69%, ethyl acetate 7.67%, methyl methacrylate 23.55%, n-butyl acrylate 7.84%, methacrylic acid 1.62%, benzene Ethylene 6.13%, initiator 1.50%.

[0036] (2) Add soybean oil and pentaerythritol to the reactor and raise the temperature to 140°C, then add the catalyst LiOH and continue to raise the temperature to 240°C, after the alcohol clears, cool down to below 150°C, add the prepolymer of step (1), phthalic anhydride and Benzoic acid; when the temper...

Embodiment 2

[0039] (1) Add the mixed solution of xylene and ethyl acetate into the reaction kettle and stir to raise the temperature. When the temperature reaches 110°C, keep it warm for 1 hour, and then start to add the initiator azobisisobutyronitrile (AIBN) and methyl methacrylate dropwise. (MMA), styrene (St), n-butyl acrylate (n-BA) and methacrylic acid (MA) are mixtures for copolymerization reaction, and the dropping time is controlled within 3 hours to prepare acrylic acid prepolymer;

[0040] The formula component content of the acrylic acid prepolymer is calculated by weight percent: xylene 50.04%, ethyl acetate 9.82%, methyl methacrylate 20.06%, n-butyl acrylate 8.90%, methacrylic acid 1.87%, benzene Ethylene 7.51%, initiator 1.80%.

[0041] (2) Add soybean oil and pentaerythritol to the reactor and heat up to 150°C, then add the catalyst calcium oxide and continue to heat up to 250°C, after the alcohol is cleared, cool down to below 140°C and add the prepolymer and phthalic anh...

Embodiment 3

[0044] (1) Add the mixed solution of xylene and ethyl acetate into the reaction kettle and stir to raise the temperature. When the temperature reaches 110°C, keep it warm for 1 hour, then start to drop the initiator 2,2-azobis(methylbutyronitrile), formazan Methyl acrylate (MMA), styrene (St), n-butyl acrylate (n-BA) and methacrylic acid (MA) are a mixture for copolymerization reaction, the dropping time is controlled at 2.5 hours, and finally acrylic acid pre Polymer;

[0045] The formula component content of the acrylic acid prepolymer is calculated by weight percent: xylene 52.17%, ethyl acetate 11.23%, methyl methacrylate 19.38%, n-butyl acrylate 9.88%, methacrylic acid 1.73%, benzene Ethylene 5.11%, initiator 0.50%.

[0046] (2) Add soybean oil and pentaerythritol to the reactor and heat up to 150°C, then add the catalyst lead oxide and continue to heat up to 240°C, after the alcohol is cleared, cool down to below 140°C and add the prepolymer and phthalic anhydride in st...

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PUM

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Abstract

The invention aims to provide an acrylic acid modified alkyd resin which is improved in hardness, dryness, abrasion resistance and aging resistance and also maintains particular flexibility, pigment wettability and the like. Simultaneously, the acrylic acid modified alkyd resin provided by the invention solves the problem that the common acrylic acid modified alkyd resin in the market is poor in acid and alkali resistance. The acrylic acid modified alkyd resin provided by the invention is characterized that a paint film is free of bubbling, rusting, crazing and falling in 48 hours when being measured through a liquid medium resistance experiment according to GB / T 9274-1988; and the acrylic acid modified alkyd resin is obviously superior to the traditional soybean oil alkyd resin and the common acrylic acid modified alkyd resin.

Description

technical field [0001] The invention belongs to the field of resins, in particular to acrylic modified alkyd resins and a preparation method thereof. Background technique [0002] The alkyd resin coating film is plump and bright. It is easy to apply and cross-link with oxygen. Its pigment dispersion and coating workability are good. The coating film is flexible and firm. The comprehensive performance of the coating film is good, and basically does not depend on petroleum products, and has a unique price advantage. It is one of the most widely used and widely used synthetic resins for coatings. However, the slow drying of alkyd resin coating film, low hardness, poor water resistance and corrosion resistance, etc. limit the application range of alkyd resin. However, acrylic resin has light color, light resistance, weather resistance, good outdoor exposure durability, and a wide temperature range, which can just make up for the lack of performance of alkyd resin in some proper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/49C08F220/14C08F220/18C08F212/08C08F220/06C08F2/06C09D167/08
Inventor 周法华
Owner SHANGHAI ZHENHUA HEAVY IND CHANGZHOU COATINGS CO LTD
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