Nonconsumable wood flame retardant and its preparation

A flame retardant, anti-loss technology, applied in the field of flame retardants, can solve the problems of excessive formaldehyde emission and perishable wood

Inactive Publication Date: 2007-03-14
陈万利 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From the perspective of its synthesis process, if this flame retardant is used for wood treatment, it may cause excessive formaldehyde release in wood due to excessive free aldehydes and excessive acid content, and wood is prone to decay.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Put 21.OKg of formaldehyde, 4Kg of ammonia water, 4.OKg of urea and 8.OKg of melamine into the reaction kettle, raise the temperature to 80-90°C and keep it warm for 30-60min, then cool it down to 60-70°C, add about 0.5Kg of phosphoric acid, and keep it warm for 30min , add polyethylene glycol 12.0Kg, stir for 20 minutes, adjust the pH value of the material to 5.0 with phosphoric acid or ammonia water, add 20Kg of water and 0.3Kg of urea to continue stirring, and discharge the material after the temperature is 40-50°C, which is the wood of the present invention. Anti-bleed flame retardant.

Embodiment 2

[0025] Put 23.OKg of formaldehyde, 4Kg of ammonia water, 3.8Kg of urea and 10.OKg of melamine into the reaction kettle, raise the temperature to 80-90°C and keep it for 30-60min, cool down to 60-70°C, add about 0.5Kg of phosphoric acid, and keep it for 30min. Add 11.0Kg of pentaerythritol, stir for 20 minutes, adjust the pH value of the material to 5.0 with phosphoric acid or ammonia water, add 20Kg of water and 0.4Kg of urea to continue stirring, and discharge the material after the temperature is 40-50°C, which is the wood loss resistance type of the present invention. Fuel.

Embodiment 3

[0027] Put 26.5Kg of formaldehyde, 4Kg of ammonia water, 4.Kg of urea and 4.5Kg of melamine into the reaction kettle, raise the temperature to 80-90°C and keep it for 30-60min, cool down to 60-70°C, add about 0.5Kg of phosphoric acid, keep it warm for 30min, add Dextrin 9.0Kg, after stirring for 20 minutes, adjust the pH value of the material to 5.0 with phosphoric acid or ammonia water, add 20Kg of water and 0.8Kg of urea to continue stirring, and discharge after the temperature is 40-50°C, which is the wood loss-resistant type of the present invention. Fuel.

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PUM

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Abstract

An anti-losing flame-retarding agent for wood or other organic fibre materials is prepared from formaldehyde, urea, ammonia water, phosphoric acid, cyanuramide and / or guanidine phosphate and / or guanidine sulfate, and polyethanediol and / or pentacrythrite and / or dextrin.

Description

technical field [0001] The invention relates to a flame retardant, in particular to a phosphorus-nitrogen system anti-loss polymer flame retardant resin suitable for flame retardant of wood and other organic fiber materials. The invention also relates to a preparation method of the flame retardant. Background technique [0002] Timber is an important raw material for national construction and a necessary product for people's daily life. Because of its flammability, wood has been one of the chief culprits of causing fires and spreading fires from ancient times to the present. Therefore, flame-retardant treatment of wood has become an effective measure for fire prevention. [0003] Commonly used wood flame retardants include phosphorus-nitrogen-based ammonium phosphate, ammonium dihydrogen phosphate, diammonium hydrogen phosphate, ammonium polyphosphate, dicyandiamide, melamine, etc.; boron-based borax, boric acid, zinc borate, ammonium pentaborate, etc. ; Halogen-based ammo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27K3/34B27K3/02
Inventor 吴子良陈万利
Owner 陈万利
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