Unlock instant, AI-driven research and patent intelligence for your innovation.

Nitrogen-phosphorus flame retardant containing carbamate structure and preparation method of flame retardant

A technology of phosphorus-nitrogen flame retardant and carbamate, which is applied in the field of phosphorus-nitrogen flame retardant containing carbamate structure and its preparation, and can solve the problem of unstable flame retardant effect and uneven distribution of flame retardant , poor compatibility of polyurethane and other problems, to achieve the effect of excellent flame retardant effect, excellent compatibility and high content of phosphorus and nitrogen

Active Publication Date: 2014-03-19
HUAFON MICROFIBER SHANGHAI
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the production process of domestic mainstream microfiber synthetic leather needs to be treated with high-temperature toluene for weight reduction and high-temperature water washing. At present, it is difficult for most phosphorus-nitrogen flame retardants to remain in microfiber synthetic leather after being treated under such conditions. On the other hand, the phosphorus nitrogen flame retardant has poor compatibility with the polyurethane used in the impregnation production process of the superfine fiber synthetic leather, which leads to the uneven distribution of the flame retardant in the superfine fiber synthetic leather, and finally makes the leather The flame retardant effect is unstable

Method used

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
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The phosphorus-containing trihydric alcohol: 215 grams of tris(dipropylene glycol) phosphite, catalyst: 0.2854 grams of 1,3,5-tris(dimethylaminopropyl) hexahydrotriazine and solvent two Add 2853.8 grams of methylformamide into the reaction vessel, stir evenly, add diisocyanate: 250.26 grams of diphenylmethane-4,4'-diisocyanate, and raise the temperature to 100°C, and react at this temperature for 2 hours, then Add phosphorus-containing monohydric alcohol: 105.5 grams of N-hydroxymethyl-3-(dimethoxyphosphono)propionamide, react for 30 minutes, and then evaporate the solvent to obtain a white powder, which is phosphorus containing carbamate structure Nitrogen flame retardant. When the polyurethane microfiber synthetic leather contains 30% (mass percentage) of the flame retardant, when the burning test is carried out according to the method provided by GB8410-2006, the burning speed of the polyurethane microfiber synthetic leather is 51mm / min, which meets the The flame re...

Embodiment 2

[0028] The dihydric alcohol containing phosphorus element: 150 grams (N,N-bis(2-hydroxyethyl) aminomethylphosphonic acid diethyl ester, the trihydric alcohol containing phosphorus element: 37.82 grams trimethylol Phosphine oxide, catalyst: 8.81 grams of triethylamine and 400 grams of solvent dioxane were added to the reaction vessel, after stirring evenly, diisocyanate: 250.26 grams of diphenylmethane-4,4'-diisocyanate was added, and the temperature was raised to 75 ℃, and reacted at this temperature for 1.5 hours, then added a monohydric alcohol containing phosphorus: 2.616 g of N-hydroxymethyl-3-(dimethoxyphosphono) propionamide, reacted for 20 minutes, and evaporated the solvent to obtain The white powder is a phosphorus-nitrogen flame retardant containing a carbamate structure. When the polyurethane microfiber synthetic leather contains 30% (mass percentage) of the flame retardant, burn according to the method provided by GB8410-2006 During the test, the burning speed of p...

Embodiment 3

[0030] The dihydric alcohol containing phosphorus element: 291.66 grams of bis(4-hydroxyphenyl) phenylphosphine oxide, the trihydric alcohol containing phosphorus element: 8.4 grams of trihydroxymethylphosphine oxide, catalyst: cyclohexylmethyl Add 23.41 grams of tertiary amine and 23.41 grams of solvent propylene glycol methyl ether acetate into the reaction vessel, stir evenly, add diisocyanate: 168.19 grams of 1,6-hexamethylene diisocyanate, and raise the temperature to 50°C, and react at this temperature for 0.5 hours , and then evaporate the solvent to dryness to obtain a colorless transparent liquid, which is a phosphorus-nitrogen flame retardant containing a carbamate structure. When the polyurethane microfiber synthetic leather contains 30% (mass percentage) of the flame retardant, when the burning test is carried out according to the method provided by GB 8410-2006, the burning speed of the polyurethane microfiber synthetic leather is 63mm / min, It meets the flame reta...

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
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a nitrogen-phosphorus flame retardant containing a carbamate structure and a preparation method of the flame retardant. The method comprises the following steps: stirring and mixing dihydric alcohol containing a phosphorus element, trihydric alcohol containing the phosphorus element, a catalyst and a solvent, and then adding diisocyanate to react; adding monohydric alcohol containing the phosphorus element to react; and drying the solvent by distillation, so as to obtain the nitrogen-phosphorus flame retardant containing the carbamate structure. The nitrogen-phosphorus flame retardant disclosed by the invention is an environment-friendly flame retardant which does not contain halogen or heavy metals, and is non-toxic; the synthetic process is simple and easy to control, high in nitrogen-phosphorus content, and good in flame retardant effect, has excellent compatibility with polyurethane, can be well dispersed into various polyurethane using systems, and simultaneously has a certain reticular structure, so that the nitrogen-phosphorus flame retardant is not dissolved into a toluene system. Thus, the nitrogen-phosphorus flame retardant can be applied to the field of flame-retardant superfine fiber synthetic leather requiring reducing production by methylbenzene.

Description

technical field [0001] The invention relates to a phosphorus-nitrogen flame retardant and a preparation method thereof, in particular to a phosphorus-nitrogen flame retardant containing a carbamate structure and a preparation method thereof. Background technique [0002] The application of microfiber synthetic leather (abbreviation: microfiber leather) in the field of automotive interiors includes high-end automotive steering wheel leather, high-end automotive seat leather, high-end automotive door panel leather, and high-end automotive dashboard leather. market space. Flame retardant performance is a key feature of automotive interior products, and each OEM has listed this performance as a mandatory performance requirement for automotive interior products. [0003] For the flame retardant treatment of microfiber leather, the currently known mainstream technology at home and abroad is to add flame retardants to polyurethane, which has reached the flame retardant requirement...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/38C08G18/32C08G18/20C08G18/18C08L75/04
CPCC08G18/288C08G18/388C08G18/3887C08G18/3889D06M15/579D06M2200/30
Inventor 吴勇王贺玲孙向浩诸葛磊韩芹刘国
Owner HUAFON MICROFIBER SHANGHAI