Halogen free phosphorous-nitrogen synergic antiflaming water-soluble polyurethane fabric coating agent and preparation method thereof

Abstract

The invention relates to halogen free phosphorous-nitrogen synergic antiflaming water-soluble polyurethane fabric coating agent and a preparation method thereof, belonging to the technical field of light industry. The coating agent comprises diisocyanate, non-antiflaming polyalcohol, reactive type phosphorous-nitrogen series polyalcohol, hydrophilic chain extender and neutralizing agent. The diisocyanate, non-antiflaming polyalcohol, reactive type phosphorous-nitrogen series polyalcohol and hydrophilic chain extender are added into a kettle, and reaction is carried out, thus obtaining prepolymer; then the prepolymer is added into aqueous solution containing neutralizing agent, emulsification neutralization is carried out in high speed emulsification equipment, and then rotary evaporation is carried out to remove solvent, thus obtaining target product. The invention has the characteristics of environmental protection, no toxicity, low smoke, phosphorous-nitrogen synergic antiflaming and obvious antiflaming effect; the antiflaming water-soluble polyurethane fabric coating agent is adopted for finishing fabric, coating is transparent and unsticky, handfeel of fabric is not influenced, and soaping resistance can be realized, thus passing level B1 in GB / T5455-1997 textile-burning behaviour-vertical method.

Description

technical field

[0001] The invention relates to a halogen-free phosphorus-nitrogen synergistic flame-retardant water-based polyurethane fabric coating agent and a preparation method thereof, belonging to the technical field of light industry. Background technique

[0002] Water-based polyurethane uses water as the medium, which has the advantages of non-toxicity, environmental protection, good construction conditions, safe production and application, and low cost. It is beneficial to the production of colored coating products, and the coating has good hydrophilicity. Waterborne polyurethane is mainly used in fabrics, leather, building materials, etc. These materials are all flammable materials, and generally require flame retardant treatment. The flame retardants used in polyurethane are mainly halogen flame retardants, organophosphorus flame retardants and phosphorus-nitrogen flame retardants. Although halogenated flame retardants have the advantages of high flame retardan...

Examples

Embodiment 1

[0028] The formula of halogen-free phosphorus-nitrogen synergistic flame-retardant waterborne polyurethane fabric coating agent is shown in table 1:

[0029] Table 1 Example 1 The formula of halogen-free phosphorus-nitrogen synergistic flame-retardant waterborne polyurethane fabric coating agent

[0030] raw material

Mass / g

Isophorone diisocyanate

138

Polyester polyol (hydroxyl value 110mgKOH / g)

110

N-hydroxymethyl, N-hydroxypropylaminomethylphosphonic acid diethyl ester (hydroxyl value 450mgKOH / g)

75

Dimethylolpropionic acid

28

tributylamine

9.1

[0031] 1) Add isophorone diisocyanate, polyester polyol with a hydroxyl value of 110mgKOH / g, and N-methylol with a hydroxyl value of 450mgKOH / g in a four-necked flask equipped with a stirrer, a reflux condenser, and a thermometer. , N-hydroxypropylaminomethylphosphonic acid diethyl ester and dimethylol propionic acid, at 75 ° C in N 2 Under the protecti...

Embodiment 2

[0036] The formula of halogen-free phosphorus-nitrogen synergistic flame-retardant waterborne polyurethane fabric coating agent is shown in table 2:

[0037] Table 2 Example 2 The formula of halogen-free phosphorus-nitrogen synergistic flame-retardant waterborne polyurethane fabric coating agent

[0038] raw material

Mass / g

Toluene diisocyanate

119

[0039] Polyether polyol (hydroxyl value 100mgKOH / g)

100

N-hydroxymethyl, N-hydroxyethylaminoethylphosphonic acid dimethyl ester (hydroxyl value 435mgKOH / g)

84

Dimethylolpropionic acid

17.3

Triethylamine

9.3

[0040] 1) Add toluene diisocyanate, polyether polyol with a hydroxyl value of 100mgKOH / g, N-methylol with a hydroxyl value of 435mgKOH / g, N- Dimethyl hydroxyethylaminoethylphosphonate and dimethylolpropionic acid, at 75°C in N 2 Under the protection reaction 5h, obtain prepolymer;

[0041] 2) Cool the prepolymer obtained in step 1) to ...

Embodiment 3

[0045] The formula of halogen-free phosphorus-nitrogen synergistic flame-retardant waterborne polyurethane fabric coating agent is shown in table 3:

[0046] Table 3 Example 3 The formula of halogen-free phosphorus-nitrogen synergistic flame-retardant waterborne polyurethane fabric coating agent

[0047] raw material

Mass / g

Hexamethylene diisocyanate

112

Polyether polyol (hydroxyl value 100mgKOH / g)

100

Dimethyl bis(hydroxymethyl)aminoethylphosphonate (hydroxyl value 410mgKOH / g)

62.4

Dimethylolpropionic acid

12

Triethylamine

9.1

[0048] 1) Add hexamethylene diisocyanate, polyether polyol with a hydroxyl value of 100mgKOH / g, and bis(hydroxymethyl) with a hydroxyl value of 410mgKOH / g in a four-necked flask equipped with a stirrer, a reflux condenser, and a thermometer. ) Dimethyl aminoethylphosphonate and dimethylolpropionic acid, at 75°C in N 2 Reaction 5h under protection obtains prepolymer;

[0...

technical field

[0001] The invention relates to a halogen-free phosphorus-nitrogen synergistic flame-retardant water-based polyurethane fabric coating agent and a preparation method thereof, belonging to the technical field of light industry. Background technique

[0002] Water-based polyurethane uses water as the medium, which has the advantages of non-toxicity, environmental protection, good construction conditions, safe production and application, and low cost. It is beneficial to the production of colored coating products, and the coating has good hydrophilicity. Waterborne polyurethane is mainly used in fabrics, leather, building materials, etc. These materials are all flammable materials, and generally require flame retardant treatment. The flame retardants used in polyurethane are mainly halogen flame retardants, organophosphorus flame retardants and phosphorus-nitrogen flame retardants. Although halogenated flame retardants have the advantages of high flame retardan...

Examples

Embodiment 1

[0028] The formula of halogen-free phosphorus-nitrogen synergistic flame-retardant waterborne polyurethane fabric coating agent is shown in table 1:

[0029] Table 1 Example 1 The formula of halogen-free phosphorus-nitrogen synergistic flame-retardant waterborne polyurethane fabric coating agent

[0030] raw material

Mass / g

Isophorone diisocyanate

138

Polyester polyol (hydroxyl value 110mgKOH / g)

110

N-hydroxymethyl, N-hydroxypropylaminomethylphosphonic acid diethyl ester (hydroxyl value 450mgKOH / g)

75

Dimethylolpropionic acid

28

tributylamine

9.1

[0031] 1) Add isophorone diisocyanate, polyester polyol with a hydroxyl value of 110mgKOH / g, and N-methylol with a hydroxyl value of 450mgKOH / g in a four-necked flask equipped with a stirrer, a reflux condenser, and a thermometer. , N-hydroxypropylaminomethylphosphonic acid diethyl ester and dimethylol propionic acid, at 75 ° C in N 2 Under the protecti...

Embodiment 2

[0036] The formula of halogen-free phosphorus-nitrogen synergistic flame-retardant waterborne polyurethane fabric coating agent is shown in table 2:

[0037] Table 2 Example 2 The formula of halogen-free phosphorus-nitrogen synergistic flame-retardant waterborne polyurethane fabric coating agent

[0038] raw material

Mass / g

Toluene diisocyanate

119

[0039] Polyether polyol (hydroxyl value 100mgKOH / g)

100

N-hydroxymethyl, N-hydroxyethylaminoethylphosphonic acid dimethyl ester (hydroxyl value 435mgKOH / g)

84

Dimethylolpropionic acid

17.3

Triethylamine

9.3

[0040] 1) Add toluene diisocyanate, polyether polyol with a hydroxyl value of 100mgKOH / g, N-methylol with a hydroxyl value of 435mgKOH / g, N- Dimethyl hydroxyethylaminoethylphosphonate and dimethylolpropionic acid, at 75°C in N 2 Under the protection reaction 5h, obtain prepolymer;

[0041] 2) Cool the prepolymer obtained in step 1) to ...

Embodiment 3

[0045] The formula of halogen-free phosphorus-nitrogen synergistic flame-retardant waterborne polyurethane fabric coating agent is shown in table 3:

[0046] Table 3 Example 3 The formula of halogen-free phosphorus-nitrogen synergistic flame-retardant waterborne polyurethane fabric coating agent

[0047] raw material

Mass / g

Hexamethylene diisocyanate

112

Polyether polyol (hydroxyl value 100mgKOH / g)

100

Dimethyl bis(hydroxymethyl)aminoethylphosphonate (hydroxyl value 410mgKOH / g)

62.4

Dimethylolpropionic acid

12

Triethylamine

9.1

[0048] 1) Add hexamethylene diisocyanate, polyether polyol with a hydroxyl value of 100mgKOH / g, and bis(hydroxymethyl) with a hydroxyl value of 410mgKOH / g in a four-necked flask equipped with a stirrer, a reflux condenser, and a thermometer. ) Dimethyl aminoethylphosphonate and dimethylolpropionic acid, at 75°C in N 2 Reaction 5h under protection obtains prepolymer;

[0...

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