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Method for preparing nearly-zero VOC (volatile organic compound) alkyd resin from gutter oil and alkyd resin

A technology of alkyd resin and waste oil, applied in the field of coatings, can solve problems such as inability to do it, achieve excellent environmental protection, reduce production costs, and achieve the effect of reuse

Active Publication Date: 2018-11-16
绍兴长木新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the alkyd resin prepared from waste oil also has organic volatile solvents, which cannot achieve zero VOC

Method used

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  • Method for preparing nearly-zero VOC (volatile organic compound) alkyd resin from gutter oil and alkyd resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Preparation of waste oil alcoholysis solution: Put 85 parts by mass of refined waste oil and 15 parts by mass of pentaerythritol into the reaction kettle, heat up to 180°C, then add 0.03 parts by mass of lithium hydroxide, continue to heat up to 270°C, and react for 2 hours When the mixture obtained by mixing the reaction product and ethanol at a mass ratio of 1:1 is clear and transparent, the reaction can be ended and the temperature can be lowered for later use.

[0045] Among them, refined waste oil was purchased from Zhejiang Qingcaodi Holdings Co., Ltd.

Embodiment 2

[0047] An environment-friendly alkyd resin prepared from waste oil, prepared through the following steps:

[0048] Mix 8 parts by mass of neopentyl glycol, 10 parts by mass of sodium isophthalate-5-sulfonate and 0.02 parts by mass of stannous octoate; slowly heat up to 200°C within 5 hours; add 33 Parts by mass of waste oil alcoholysis solution, 5 parts by mass of trimethylolpropane, 15 parts by mass of phthalic anhydride, and 2 parts by mass of maleic anhydride, heat up to 220°C and keep warm for about 1 hour. When the viscosity of the product reaches the predetermined When the value is high, cool down and filter and pack.

[0049] It is worth mentioning that the predetermined value of the viscosity is: when the product and butyl glycol ether are mixed at a mass ratio of 1:1, the viscosity of the grate tube is greater than 1 second.

Embodiment 3

[0051] An environment-friendly alkyd resin prepared from waste oil, prepared through the following steps:

[0052] Mix 10 parts by mass of neopentyl glycol, 15 parts by mass of sodium isophthalic acid-5-sulfonate and 0.02 parts by mass of stannous octoate; slowly heat up to 200°C within 5 hours; add 40 Parts by mass of waste oil alcoholysis solution, 10 parts by mass of trimethylolpropane, 25 parts by mass of phthalic anhydride, and 5 parts by mass of maleic anhydride, heat up to 220°C and keep warm for about 1 hour. When the viscosity of the product reaches the predetermined When the value is high, cool down and filter and pack.

[0053] It is worth mentioning that the predetermined value of the viscosity is: when the product and butyl glycol ether are mixed at a mass ratio of 1:1, the viscosity of the grate tube is greater than 1 second.

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Abstract

The invention discloses a method for preparing nearly-zero VOC (volatile organic compound) alkyd resin from gutter oil and alkyd resin. The method comprises the following steps: S1, evenly mixing 8-10parts by mass of dihydric alcohol, 10-15 parts by mass of 5-sulfoisophthalic acid monosodium salt and an appropriate quantity of a catalyst; S2, heating the mixture in step S1, then adding 33-40 parts by mass of a gutter oil alcoholysis solution, 5-10 parts by mass of trimethylolpropane and 15-30 parts by mass of anhydride, performing heating for reaction for a period of time, and cooling a product for later use when the viscosity of the product reaches a predetermined value. 100% solid alkyd resin can be obtained, the use of volatile organic solvents is avoided, nearly-zero VOC alkyd resin is obtained, and environment friendliness is excellent. Alkyd resin is prepared from the gutter oil, the production cost of alkyd resin is reduced, and the gutter oil is recycled.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a method for preparing a near-zero VOC alkyd resin by utilizing waste oil and the alkyd resin. Background technique [0002] With the enhancement of environmental awareness, people pay more and more attention to products with less pollution and high added value. Solvent-based coatings change from fluidity to solid coating, and the solvent volatilizes, causing great pollution to the atmosphere. Therefore, reducing or even prohibiting the use of harmful solvents, and realizing the water-based technology of coatings is particularly critical. [0003] In the paint industry, the polyester prepared by the reaction of fatty acid or oleic acid with polyol and polybasic acid is called alkyd resin. The synthesis methods of water-based alkyd resin mainly include the method of salt formation, the method of introducing hydrophilic non-ionic groups into the polymer, and the method of converting the po...

Claims

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Application Information

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IPC IPC(8): C08G63/49C08G63/688C09D167/08
CPCC08G63/48C08G63/6886C09D167/08
Inventor 于郭
Owner 绍兴长木新材料科技有限公司
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