Method for preparing melamine phosphonate flame-retardant-anti-crease integrated dressing agent for cotton

Abstract

The invention relates to a method for preparing cotton-used melamine phosphonate flame-retardant and crease-resistant finishing agent, comprising the following steps: (1) formalin solution and water are obtained and stirred, pH value is adjusted, melamine is added, and a product (I) with water content of less than 15 percent is obtained after separating and drying; (2) methanol is put into a reactor, hydrochloric acid is used for adjusting pH, the product (I) is added, dissolving and heat preservation are carried out, NaOH is used for adjusting pH, and a product (II) is obtained by suction filtration; the product (II), dimethylphosphite and absolute ethyl alcohol are added into the reactor and stirred at room temperature, and heating and heat preservation are carried out; (3) triethylamine is used for adjusting pH value, reaction at the preserved temperature and measurement of turbidity are carried out, heating is stopped when the turbidity is 30 DEG C, the finishing agent is obtained after cooling and adding organic solvent. The method is simple and safe and has good reproduction quality, good flame-retardant and crease-resistant quality, in addition, oxygen index still exceeds 27 after 50 times of standard washing, creasy recover angle reaches 188.5, thus the finishing agent can be used as a durable flame-retardant and crease-resistant finishing agent.

Description

technical field [0001] The invention belongs to the field of preparation of durable halogen-free flame retardants and anti-wrinkle agents for cotton fabrics, and in particular relates to a preparation method of a melamine phosphonate flame-retardant-anti-wrinkle integrated finishing agent for cotton. Background technique [0002] With the development of science and technology and the progress of the textile industry, the variety of textiles continues to increase, and its application scope and quantity have increased significantly, from people's daily life to industry, transportation, military and many other fields. Subsequently, the problem of causing disasters due to textile ignition is becoming more and more important. According to statistics, more than 20% of the fire accidents in the world are caused or expanded due to the burning of textiles. In recent years, the fire situation in public places in my country is severe, and the continuous vicious fire accidents have caus...

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Problems solved by technology

[0004] Halogen-containing flame retardants have gradually withdrawn from the market due to their environmental unfriendliness. Currently, the commonly used phosphorus-nitrogen-containing flame retardants include tetrahydroxyphosphine chloride series (such as THPC), N-hydroxymethylphosphoramides (such as Pyrovatex CP conc ., domestic CFR-201, FRC-2, etc.) and cyclic phosphonates, but the commonly used washable cotton flame retardants on the market are only Pyrovatex CP and THPC, and Pyrovatex CP needs to be used in large quantities. Free formaldehyde cross-linking agent, and the bond energy of THPC's P-C bond is low, easy to release formaldehyde

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