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Environmentally-friendly halogen-free reaction type soft and hard segment co-modified flame retardant waterborne polyurethane fabric coating agent and preparation method thereof

A water-based polyurethane, reactive technology, applied in the direction of fiber type, textile and papermaking, fiber processing, etc., can solve the problem of large amount of smoke, and achieve the effect of smaller fabric color, no influence on hand feeling, and remarkable flame retardant effect.

Inactive Publication Date: 2011-10-26
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the problems in the prior art that the preparation of flame-retardant water-based polyurethane requires the addition of halogen flame-retardant, accompanied by toxic gas, and a large amount of smoke, to provide an environmentally friendly halogen-free reactive soft and hard segment co-modified flame-retardant water-based polyurethane fabric Coating agent and preparation method thereof

Method used

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  • Environmentally-friendly halogen-free reaction type soft and hard segment co-modified flame retardant waterborne polyurethane fabric coating agent and preparation method thereof
  • Environmentally-friendly halogen-free reaction type soft and hard segment co-modified flame retardant waterborne polyurethane fabric coating agent and preparation method thereof
  • Environmentally-friendly halogen-free reaction type soft and hard segment co-modified flame retardant waterborne polyurethane fabric coating agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The formula of the environmentally friendly halogen-free reactive soft and hard segment co-modified flame-retardant waterborne polyurethane fabric coating agent is shown in Table 1:

[0027] Table 1 Example 1 Formula of environmentally friendly halogen-free reactive soft and hard segment co-modified solar-burning waterborne polyurethane fabric coating agent

[0028] raw material

Mass / g

Isophorone diisocyanate

65

Polyether polyol (hydroxyl value 110mgKOH / g)

110

Organic phosphorus flame retardant polyol (hydroxyl value 100mgKOH / g)

12

Phosphorus-nitrogen flame retardant polyol (hydroxyl value 435mgKOH / g)

8

Dimethylolpropionic acid

6

Tributylamine

8.2

[0029] The structural formula of organophosphorus polyol is:

[0030] H-[-OCH 2 OP(O)(OCH 3 )] 2x -[-OCH 2 OP(O)(CH 3 )] x -OCH 2 -OH

[0031] The reactive phosphorus-nitrogen flame-retardant polyol is: N-hydroxymethyl, N-hydroxyethylaminoethyl phosphonic acid dimethyl ester.

[0032] 1) In a four-necked flask ...

Embodiment 2

[0037] The formula of the environmentally friendly halogen-free reactive soft and hard segment co-modified flame-retardant waterborne polyurethane fabric coating agent is shown in Table 2:

[0038] Table 2 Example 2 Formula of environmentally friendly halogen-free reactive soft and hard segment co-modified solar-burning waterborne polyurethane fabric coating agent

[0039] raw material

Mass / g

2,6-Diisocyanate methyl caproate

63

Polyester polyol (hydroxyl value 105mgKOH / g)

100

Organophosphorus polyol (hydroxyl value 135mgKOH / g)

15.7

Phosphorus-nitrogen flame-retardant polyol (hydroxyl value 450mgKOH / g)

8

Dihydroxy half ester

14

Triethylamine

3.4

[0040] The structural formula of organophosphorus polyol is:

[0041] H-[-OCH 2 CH 2 OP(O)(OCH 3 )] 2x -[-OCH 2 OP(O)(CH 2 CH 3 )] x -OCH 2 -OH

[0042] The reactive phosphorus-nitrogen flame-retardant polyol is: N-hydroxymethyl, N-hydroxypropylaminomethylphosphonic acid diethyl ester.

[0043] 1) In a four-necked flask ...

Embodiment 3

[0048] The formula of the environmentally friendly halogen-free reactive soft and hard segment co-modified flame-retardant waterborne polyurethane fabric coating agent is shown in Table 3:

[0049] Table 3 Example 3 Formula of environmentally friendly halogen-free reactive soft and hard segment co-modified flame-retardant waterborne polyurethane fabric coating agent

[0050] raw material

Mass / g

Hexamethylene diisocyanate

50

Polyester polyol (hydroxyl value 100mgKOH / g)

90

Organophosphorus polyol (hydroxyl value 110mgKOH / g)

30.2

Phosphorus-nitrogen flame-retardant polyol (hydroxyl value 410mgKOH / g)

40

Dimethylolpropionic acid

12

Triethylamine

9.6

[0051] The structural formula of organophosphorus polyol is:

[0052] H-[-OCH 2 CH 2 OP(O)(OCH 3 )] x -[-OCH 2 OP(O)(CH 3 )] x -OCH 2 CH 2 -OH

[0053] The reactive phosphorus-nitrogen flame retardant polyol is: dimethyl bis(hydroxymethyl)aminoethylphosphonate

[0054] 1) In a four-necked flask equipped with a stirrer, a...

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Abstract

The invention relates to an environmentally-friendly halogen-free reaction type soft and hard segment co-modified flame retardant waterborne polyurethane fabric coating agent and a preparation method thereof and belongs to the technical field of light industry. The method comprises the following steps: adding diisocyanate, non-flame retardant polyol, reaction type organic phosphorus flame retardant polyol, reaction type phosphorus-nitrogen system flame retardant polyol and a hydrophilic chain extender into a reaction kettle for reaction while stirring in the presence of N2, thus obtaining a prepolymer; cooling, and then utilizing a solvent to regulate the viscosity of the system; and adding the prepolymer a water solution containing a neutralizing agent, neutralizing, and removing the solvent, thus obtaining a target product. The synthesized inherent flame retardant waterborne polyurethane fabric coating agent has the advantages of environmental friendliness, no toxicity, low smoke, phosphorus-nitrogen synergistic flame retardant effect and significant flame retardant effect; after the coating agent is adopted for performing after-finishing on a fabric, a coating is transparent, the color change of the fabric is less, the fabric is not sticky, the hand feeling of the fabric is not affected, the fabric is resistant to soaping, and the fabric can simultaneously pass the B1 level in a GB / T5455-1997 textiles-burning behavior-vertical method.

Description

Technical field [0001] The invention relates to an environment-friendly halogen-free reaction type soft and hard segment co-modified flame-retardant water-based polyurethane fabric coating agent and a preparation method thereof, belonging to the technical field of light industry. Background technique [0002] Waterborne polyurethane is mainly used in fabrics, leather, building materials, etc. These materials are flammable materials and generally require flame retardant treatment. Waterborne polyurethane uses water as the medium, has the advantages of non-toxic, environmentally friendly, good construction conditions, safe production and application, and low cost. It is beneficial to the production of colored coating products and has good hydrophilicity. The Chinese patent application number is 200510122057.X, adding 15% of the flame retardant monomer dibromoneopentyl glycol into the system before polymerization, so that the resulting polyurethane macromolecular chain contains the ...

Claims

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Application Information

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IPC IPC(8): D06M15/579C08G18/66C08G18/64C08G18/32C08G18/12D06M101/32
Inventor 罗运军李晓萌李芬李杰葛震夏敏
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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