Nonconsumable wood flame retardant and its preparation

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

Inactive Publication Date: 2004-04-21
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 21.0Kg of formaldehyde, 4Kg of ammonia water, 4.0Kg of urea and 8.0Kg 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 ~0.5Kg of phosphoric acid, keep it warm for 30min, add poly Ethylene glycol 12.0Kg, 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 0.3Kg 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 2

[0025] Put 23.0Kg of formaldehyde, 4Kg of ammonia water, 3.8Kg of urea and 10.0Kg of melamine into the reaction kettle, raise the temperature to 80-90°C and keep it for 30-60min, cool it down to 60-70°C, add ~0.5Kg of phosphoric acid, keep it warm for 30min, then add pentaerythritol 11.0Kg, 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 0.4Kg of urea to continue stirring, and discharge after the temperature is 40-50°C, which is the wood loss-resistant flame retardant of the present invention.

Embodiment 3

[0027] Put 26.5Kg of formaldehyde, 4Kg of ammonia water, 4.1Kg 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 ~0.5mKg of phosphoric acid, keep it warm for 30min, add paste Refined 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 the material after the temperature is 40-50°C, which is the wood loss-resistant flame retardant of the present invention .

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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 are 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 ammonium...

Claims

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Application Information

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