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Formaldehyde removing agent

A technology for removing aldehydes and formaldehyde, applied in household components, coatings, separation of dispersed particles, etc., can solve the problems of high cost and unsatisfactory effect.

Inactive Publication Date: 2005-10-26
苏州市丛岭胶粘剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, many companies have been developing formaldehyde post-treatment products in recent years, but the cost is relatively high and the effect is not ideal.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A kind of formaldehyde remover, its used material is made up as follows by weight ratio: water 1000kg; 2-amino-2-ethyl-1-3-propanediol 110kg; Sodium thiosulfate 20kg; Edible sodium sulfite 80kg; Polyvinyl alcohol (PVA1788 ) 20kg; water-based food flavor 1kg; photocatalyst and additives 10kg.

[0016] The process operation steps are:

[0017] first step dissolve

[0018] Add 1000kg of water and 20kg of polyvinyl alcohol (PVA1788) into a 1500kg reactor, raise the temperature to 80-85°C, keep the temperature for 1-1.5 hours, and then lower the temperature.

[0019] The second step is to mix other additives

[0020] After cooling down to 40°C, 110kg of 2-amino-2-ethyl-1-3-propanediol, 80kg of edible sodium sulfite, 20kg of sodium thiosulfate, 1kg of water-based food flavor (orange type), 10kg of photocatalyst and auxiliary agent can be added to carry out Stir for 1-2 hours, and the material can be discharged below 40°C.

Embodiment 2

[0022] A kind of formaldehyde remover, its used material is made up as follows by weight ratio: water 1000kg; 2-amino-2-ethyl-1-3-propanediol 120kg; Sodium thiosulfate 10kg; Edible sodium sulfite 70kg; Polyvinyl alcohol (PVA1788 ) 12kg; water-based food flavor 1kg; photocatalyst and additives 15kg.

[0023] The process operation steps are:

[0024] first step dissolve

[0025] Add 1000kg of water and 12kg of polyvinyl alcohol (PVA1788) into a 1500kg reactor, raise the temperature to 80-85°C, keep the temperature for 1-1.5 hours, and then lower the temperature.

[0026] The second step is to mix other additives

[0027] After cooling down to 40°C, 120kg of 2-amino-2-ethyl-1-3-propanediol, 70kg of edible sodium sulfite, 10kg of sodium thiosulfate, 1kg of water-based food flavor (pineapple type), 15kg of photocatalyst and auxiliary agent can be added to carry out Stir for 1-2 hours, and the material can be discharged below 40°C.

Embodiment 3

[0029] A kind of formaldehyde remover, its material used is made up as follows by weight ratio: water 1000kg; 2-amino-2-ethyl-1-3-propanediol 160kg; Sodium thiosulfate 25kg; Edible sodium sulfite 90kg; Polyvinyl alcohol (PVA1788 ) 10kg; water-based food flavor 1.5kg; photocatalyst and additives 12kg.

[0030] The process operation steps are:

[0031] first step dissolve

[0032] Add 1000kg of water and 10kg of polyvinyl alcohol (PVA1788) into a 1500kg reactor, raise the temperature to 80-85°C, keep the temperature for 1-1.5 hours, and then lower the temperature.

[0033] The second step is to mix other additives

[0034] Formaldehyde removal rate

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PUM

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Abstract

A form-aldehyde removing agent is proportionally prepared from water, 2-amino-2-ethyl-1-3-propanediol, Na2S2O3, Na2So3, pvA-1788, water-soluble edible essence, photocatalyst and assistant.

Description

technical field [0001] The invention relates to a chemical product, in particular to a formaldehyde remover used in formaldehyde, an important chemical raw material. Background technique [0002] Formaldehyde is the simplest chemical substance and widely used in industry. Due to its strong reactivity and low price, it has become an important raw material for the production of urea-formaldehyde resin, melamine-formaldehyde resin and phenolic resin. It is used extensively as an adhesive in the production of boards (including particleboard, fiberboard and plywood). In addition, formaldehyde is also widely used in textile auxiliaries, papermaking, disinfection, explosives, 107 construction glue, paint and other products, and most of them have a certain amount of residual formaldehyde. In addition, in automobile exhaust, cigarette smoke, and in the wood industry, a certain amount of formaldehyde can be decomposed when wood is carbonized, saccharified, and dried. These formaldeh...

Claims

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Application Information

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IPC IPC(8): B01D53/72
Inventor 孙益成彭少将
Owner 苏州市丛岭胶粘剂有限公司
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