Phosphorus-containing flame-retardant monomer, halogen-free flame-retardant polyester containing the monomer and preparation method thereof

A flame-retardant monomer and flame-retardant polyester technology, which is applied in the field of flame-retardant polyester manufacturing, can solve the problems of application occasions that cannot meet strict crystallization performance requirements, symmetrical structure destruction, and crystallization performance decline, so as to ensure the esterification reaction The effect of activity, good comprehensive performance and high crystallization performance
CN103641859BActive Publication Date: 2015-11-18JIANGSU YUXING FILM TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGSU YUXING FILM TECH
Publication Date
2015-11-18

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Abstract

The invention relates to a preparation method of halogen-free flame retardant polyester phosphorus containing a phosphorus-containing flame retardant monomer. The preparation method includes: according to a mass ratio, adding 100 parts of terephthalic acid, 3.6-15.2 parts of the phosphorus-containing flame retardant monomer, 46.3-54.7 parts of ethylene glycol, 0.035-0.062 part of a catalyst and 0.008-0.015 part of a heat stabilizer into a synthesis reaction kettle, and carrying out a conventional polyester synthesis process to prepare the halogen-free flame retardant polyester with a phosphorus content of 0.8-1.5wt% and an intrinsic viscosity number of 0.63-0.69dL g<-1>. The halogen-free flame retardant polyester provided by the invention has the characteristics of high structural regularity, high degree of crystallinity, and high melting point.
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Description

technical field

[0001] The invention relates to a phosphorus-containing flame-retardant monomer, a halogen-free flame-retardant polyester containing the monomer and a preparation method thereof, and belongs to the technical field of flame-retardant polyester manufacture. Background technique

[0002] Polyethylene terephthalate (PET) has the advantages of high modulus, high strength and elasticity, acid resistance and heat resistance, and has become the largest and most widely used fiber variety in synthetic fibers. Since the 1990s, the polyester and polyester fiber industry has developed rapidly, and my country has become the world's largest producer of polyester. However, due to the flammability of polyester, it is easy to catch fire and cause huge losses to people's lives and property safety, thus limiting its application in some fields. Therefore, the research on flame retardant polyester has always been a hot spot in polyester research, which is of great significance to...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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