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Formaldehyde scavenging agent with oil solubility and preparation method

A formaldehyde scavenger, oil-soluble technology, applied in the field of oil-soluble formaldehyde scavengers, can solve problems such as poor breathing, long-term existence, poisoning, etc.

Inactive Publication Date: 2013-04-24
上海格伦化学科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although formaldehyde has the above-mentioned advantages, this is relatively speaking, and any substance is impossible to be perfect, and it also has many disadvantages: there are many impurities, such as methanol, which can inactivate enzymes and affect the reaction; Fixative acid changes, affecting staining; can produce formalin pigment, affecting observation; cannot fix uric acid and sugar substances; easily volatilizes, pollutes the environment, and can cause specimens to dry up; can exist on fixed tissues for a long time
[0069] 4. Toxicological information and environmental behavior of formaldehyde
[0085] 5. Hazards and classification of formaldehyde
[0100] 3) Although he does not smoke, he often feels uncomfortable throat, foreign body sensation, and shortness of breath;
[0120] 2) moderate poisoning
[0125] 3) Severe poisoning
[0226] d. Nano-photocatalysis technology: use nano-photocatalysis to decompose formaldehyde; defect: trace amount, small effect
[0227] e. Covering technology (spray, painting): cover the pollution source; defect: the surface is good, but formaldehyde is still released slowly
[0228] f. Oxidation technology: use strong oxidation characteristics to decompose pollution; defect: toxic
[0232] b. Activated carbon adsorption technology: the adsorption material made by microporous technology is used to adsorb chemical pollutants, which has a good effect on formaldehyde and ammonia; defect: it is easy to be saturated in a short period of time, and it needs to be regenerated and needs to be replaced frequently
Disadvantage: Professional formaldehyde removal personnel are required to operate
[0344] (3) Instructions for storage and transportation
[0367] 3. Status quo of formaldehyde removal technology
[0404] Through literature search etc., up to now, have not yet found to have the report of aspects such as new oil-soluble formaldehyde scavenger and its preparation and use method, also have not reached JCT1074-2008 indoor air purification function coating material purification performance industry standard. Report on Cleaning Performance of Oily Alkyd Resin Paints

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  • Formaldehyde scavenging agent with oil solubility and preparation method
  • Formaldehyde scavenging agent with oil solubility and preparation method
  • Formaldehyde scavenging agent with oil solubility and preparation method

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preparation example Construction

[0607] Now with regard to the preparation method of oil-soluble formaldehyde scavenger of the present invention, take industrialized production mode as example, carry out specific elaboration:

[0608] The oil-soluble formaldehyde scavenger is an oil-soluble compound synthesized from polyols, polybasic acids and / or fatty acids and compounds containing characteristic functional groups by the following preparation method.

[0609] (1) Mixing and stirring compounds containing characteristic functional groups, polyols, polyacids and / or fatty acids;

[0610]The amount of substance (equivalent to mole percentage) of hydroxyl group is 5~75% polyol, the amount of substance of carboxyl group and / or acid anhydride (equivalent to mole percentage content) is 0~49.9% polybasic acid, the substance of carboxyl group The amount (equivalent to mole percentage) of fatty acid is 0-63%, and the amount of ester group substance (equivalent to mole percentage) is 0.1-95% compound containing characte...

Embodiment 1

[0628] Put 55kg of castor oil, 38.4kg of glycerin, 74kg of phthalic anhydride, and 23.6kg of methyl acetoacetate into the reaction kettle together, stir, and heat up to 150°C within 1 hour, then raise the temperature to 180°C in 1 hour, and then heat up to 180°C in 1 hour. Raise the temperature to 185°C, maintain the temperature for the esterification reaction, and control the temperature not higher than 185°C during the reaction. After reacting for 1 hour, the temperature was raised to 235° C. After reacting for 1 hour, samples were taken to measure the acid value every half hour until the acid value was 6.2 mgKOH / g, and the reaction was stopped to obtain the oil-soluble formaldehyde scavenger A. The oil-soluble formaldehyde scavenger A is a transparent light yellow liquid with a hydroxyl value of 82 mgKOH / g.

[0629] Cool down to 180°C, add 50kg of xylene, dissolve the obtained oil-soluble formaldehyde scavenger A into a solution, filter and purify to obtain the oil-soluble ...

Embodiment 2

[0635] Put 55kg of castor oil, 38.4kg of glycerin, and 127.6kg of ethyl acetoacetate into the reaction kettle together, stir, and raise the temperature to 150°C within 1 hour, then raise the temperature to 180°C in 1 hour, and then raise the temperature to 185°C in 1 hour, keep The esterification reaction is carried out at this temperature, and the temperature is controlled not to be higher than 185° C. during the reaction. After reacting for 1 hour, the temperature was raised to 235°C. After reacting for 1 hour, samples were taken to measure the acid value every half hour until the acid value was 6.0 mgKOH / g, and the reaction was stopped to obtain the oil-soluble formaldehyde scavenger B. The oil-soluble formaldehyde scavenger B is a transparent light yellow liquid with a hydroxyl value of 116.5 mgKOH / g.

[0636] Cool down to 180°C, add 30kg of xylene, dissolve the obtained oil-soluble formaldehyde scavenger B into a solution, filter and purify to obtain the oil-soluble forma...

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Abstract

The invention relates to the chemical technology field, and concretely relates to a formaldehyde scavenging agent with oil solubility and a preparation method and a usage method. The formaldehyde scavenging agent with oil solubility can be prepared to paint, and can be used for coating on the furniture, floor or other decoration sheet materials, and has good purification efficiency on indoor free formaldehyde, and no secondary pollution can be generated. On the premise of no change of the sheet material application and construction technology in the prior art, and the release of indoor formaldehyde can be fundamentally controlled. The preparation method is simple, the usage is convenient, and the formaldehyde scavenging agent is suitable for large-scale production and business application for enterprises, has good application prospect, and has obvious economy and social benefit.

Description

technical field [0001] The present invention relates to chemical engineering and other technical fields, in particular to a formaldehyde scavenger and its preparation and use method, more specifically to an oil-soluble formaldehyde scavenger and its preparation and use method. Background technique [0002] (1) Research overview of formaldehyde [0003] 1 Overview [0004] Formaldehyde is a colorless, irritating gas with a strong odor, easily soluble in water, alcohol and ether. Formaldehyde is gaseous at room temperature, easily soluble in water and ethanol, usually in the form of aqueous solution, and its 35% to 40% aqueous solution is commonly known as formalin. There is aldehyde polycondensation reaction in the formaldehyde molecule, and phenolic resin (bakelite) can be obtained. [0005] Formaldehyde is a puree poison, its highly volatile and pungent smell is not only uncomfortable, international authoritative organizations have also gradually discovered its harm. Th...

Claims

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Application Information

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IPC IPC(8): A62D3/30C07C69/738C07C67/03C08G63/49C09D167/08C09D7/12
Inventor 陈士安陈士超
Owner 上海格伦化学科技有限公司
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