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Waterborne flame-retardant polyurethane resin and preparation method thereof

A technology of polyurethane resin and polyurethane, which is applied in the field of water-based polyurethane resin and its preparation, can solve the problems that polyurethane resin has no flame retardancy, affects product performance, and reduces flame retardancy, and achieves good flame retardancy, excellent flame retardancy, and good The effect of binding fastness

Inactive Publication Date: 2011-10-12
山东建荣教学设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chinese patent CN101619193 discloses "Flame-retardant polyurethane waterproof coating for high-speed rail and its preparation method". This patent is a polyurethane resin synthesized by ordinary polyether polyol and MDI. The polyurethane resin has no flame-retardant properties
[0004] The existing polyurethane resins used in coating adhesives and coatings have basically no flame retardancy. In order to achieve flame retardancy, a large amount of flame retardants must be added. The addition of flame retardants is bound to affect product performance
If the amount of flame retardant added is large, the amount of film-forming resin is relatively small, and the fastness is poor; in order to improve the fastness, the amount of resin must be increased, the amount of flame retardant is relatively reduced, and the flame retardancy is reduced

Method used

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  • Waterborne flame-retardant polyurethane resin and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Preparation of polyurethane prepolymer A containing bromine flame-retardant polyether:

[0030] Flame retardant polyether polyol (IXOLB125), hydroxyl value 239mgKOH / g, bromine content 32%, 110g

[0031] Polyoxypropylene ether glycol, molecular weight 2000, 60g

[0032] Dimethylolpropionic acid 6g

[0033] 1.6-Hexane diisocyanate (HDI) 70g

[0034] N-methylpyrrolidone 60g

[0035] Dibutyltin dilaurate 0.05g

[0036] Add a four-necked flask equipped with a reflux condenser, a thermometer, and a stirrer in sequence. The reaction temperature is 80° C., and the reaction time is 5 hours to prepare polyurethane prepolymer A;

[0037] Preparation of blocked isocyanate polyurethane B containing bromine flame-retardant polyether:

[0038] Flame retardant polyether polyol (IXOLB125), hydroxyl value 239mgKOH / g, bromine content 32%, 160g

[0039] Polyoxyethylene ether glycol, molecular weight 2000, 80g

[0040] Isophorone diisocyanate (IPDI) 115g

[0041] N-methylpyrrolidone 60g

[0042] Dibutyltin d...

Embodiment 2

[0047] Preparation of polyurethane prepolymer A containing bromine flame-retardant polyether:

[0048] Flame retardant polyether polyol (IXOLB125), hydroxyl value 239mgKOH / g, bromine content 32%, 100g

[0049] Polyoxypropylene ether glycol, molecular weight 2000, 60g

[0050] Dimethylolpropionic acid 8g

[0051] Toluene diisocyanate (TDI) 73.6g

[0052] Solvent acetone 60g

[0053] Catalyst dibutyl tin dilaurate 0.05g

[0054] A four-necked flask equipped with a reflux condenser, a thermometer, and a stirrer was sequentially added, the reaction temperature was 80° C., and the reaction time was 5 hours, to obtain a polyurethane prepolymer A.

[0055] Preparation of blocked isocyanate polyurethane B containing bromine flame-retardant polyether:

[0056] Flame retardant polyether polyol (IXOLB125) hydroxyl value 239mgKOH / g, bromine content 32%, 180g

[0057] Polyoxyethylene ether glycol, molecular weight 2500, 80g

[0058] Toluene diisocyanate (TDI) 108g

[0059] Acetone 60g

[0060] Catalyst dibu...

Embodiment 3

[0065] Preparation of polyurethane prepolymer A containing bromine flame-retardant polyether:

[0066] Flame-retardant polyether polyol (IXOLB125), hydroxyl value 239mgKOH / g, bromine content 32%, 80g

[0067] Polyoxypropylene ether glycol, molecular weight 3000, 56g

[0068] Dihydroxymethyl butyric acid 5.6g

[0069] Dicyclohexylmethane diisocyanate (H 12 MDI) 89g

[0070] Solvent dioxane 60g

[0071] Catalyst dibutyl tin acetate 0.05g

[0072] A four-necked flask equipped with a reflux condenser, a thermometer, and a stirrer was sequentially added, the reaction temperature was 80° C., and the reaction time was 5 hours, to obtain a polyurethane prepolymer A.

[0073] Preparation of blocked isocyanate polyurethane B containing bromine flame-retardant polyether:

[0074] Flame retardant polyether polyol (IXOLB125), hydroxyl value 239mgKOH / g, bromine content 32%, 150g

[0075] Polyoxyethylene ether glycol, molecular weight 2500, 66g

[0076] 1.6-Hexane diisocyanate (HDI) 87g

[0077] Solvent diox...

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Abstract

The invention discloses waterborne flame-retardant polyurethane resin and a preparation method thereof. The waterborne flame-retardant polyurethane resin is waterborne flame-retardant polyurethane resin of brominated flame-retardant polyether, which has the solid content ranging from 20% to 40%. The preparation method comprises the step that: a polyurethane prepolymer A for preparing the brominated polyether and polyurethane B for preparing blocked isocyanate of the brominated polyether are subjected to emulsion and chain extending reaction to prepare the waterborne flame-retardant polyurethane resin. The waterborne flame-retardant polyurethane resin has excellent flame retardant property and washing fastness, and can be used directly as a flame-retardant coating adhesive and flame-retardant paint for fabrics, and the like.

Description

Technical field [0001] The invention relates to a water-based polyurethane resin with flame-retardant properties and a preparation method thereof, which are applied to fabric flame-retardant coating glue and flame-retardant coating. Background technique [0002] At present, the polyurethane resins used in fabric flame-retardant coatings and flame-retardant coatings are not flame-retardant. If you want to produce flame-retardant coatings, flame-retardant coatings and other products, flame retardants are used to achieve resistance. Flammability, such as the production of flame-retardant coating adhesives for fabrics, is usually a mixture of ordinary resins and flame retardants. [0003] Chinese patent CN101619193 discloses "special flame-retardant polyurethane waterproof coating for high-speed rail and its preparation method". This patent is a polyurethane resin synthesized by ordinary polyether polyol and MDI, which has no flame-retardant properties. [0004] The existing polyurethan...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/50C08G18/12D06M15/568C09D175/08
Inventor 严欣宁杨文堂樊丽君唐丽荣星李刚刘杰孙海娥
Owner 山东建荣教学设备有限公司
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