Preparation method of waterborne phosphorus-silicon flame-retardant polyurethane coating material

A polyurethane coating, water-based technology, applied in the direction of polyurea/polyurethane coatings, coatings, fire-resistant coatings, etc., can solve the problems of non-environmental protection, non-washing resistance, and hard hand feeling of fabrics, etc., and achieve dry hand feeling and good transparency Sex, the effect of reducing moisture absorption rate

Active Publication Date: 2018-05-22
SICHUAN DONGFANG INSULATING MATERIAL
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims at the defects and deficiencies existing in the prior art that the water-based flame-retardant polyurethane coating material is applied to fabrics with hard hand feeling and poor softness, the added flame retardant is easy to migrate and not resistant to washing, and contains halogen and is not environmentally friendly. A kind of preparation method of water-based phosphorus-silicon flame-retardant polyurethane coating material with high transparency and flexibility

Method used

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  • Preparation method of waterborne phosphorus-silicon flame-retardant polyurethane coating material
  • Preparation method of waterborne phosphorus-silicon flame-retardant polyurethane coating material

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Embodiment 25

[0055] A method for preparing a water-based phosphorus-silicon flame-retardant polyurethane coating material, the steps are: in a reactor A at room temperature, add 33 parts by mass of anhydrous phosphorus-containing polyester polyol, 10 parts by mass of polydimethylsiloxane Alkanes and 5 parts by mass of solvent, stirred evenly, then (slowly) added 15 parts by mass of diisocyanate under stirring, then added 0.01 parts by mass of catalyst, heated to 60 ° C for 2 hours; then added 1 part by mass of small molecule chain extender, 2 Parts by mass of a hydrophilic chain extender and 0.1 part by mass of a cross-linking agent, heated up to 75°C for 4 hours, cooled to room temperature, and then added (appropriate amount) neutralizing agent for neutralization reaction, so that the pH (of the reaction material) = 6-7 , to obtain phosphorus-silicon flame-retardant polyurethane prepolymer; add 1 mass part of deionized water to the reactor under (high-speed) stirring, continue (high-speed)...

Embodiment 26

[0057] A method for preparing a water-based phosphorus-silicon flame-retardant polyurethane coating material, the steps are: in a reactor A at room temperature, add 57 parts by mass of anhydrous phosphorus-containing polyester polyol, 29 parts by mass of polydimethylsiloxane Alkanes and 15 parts by mass of solvent, stirred evenly, then (slowly) added 30 parts by mass of diisocyanate under stirring, then added 0.05 parts by mass of catalyst, heated to 90 ° C for 1 h; then added 4 parts by mass of small molecule chain extender, 8 Parts by mass of a hydrophilic chain extender and 0.8 parts by mass of a crosslinking agent, heated up to 90°C for 2 hours, cooled to room temperature, and then added (appropriate amount) neutralizing agent for neutralization reaction, so that the pH (of the reaction material) = 6-7 , to obtain phosphorus-silicon flame-retardant polyurethane prepolymer; add 4 parts by mass of deionized water to the reactor under (high speed) stirring, continue (high spee...

Embodiment 27

[0059] A method for preparing a water-based phosphorus-silicon flame-retardant polyurethane coating material, the steps are: in a reactor A at room temperature, add 45 parts by mass of anhydrous phosphorus-containing polyester polyol, 19 parts by mass of polydimethylsiloxane Alkanes and 10 parts by mass of solvent, stirred evenly, then (slowly) added 23 parts by mass of diisocyanate under stirring, then added 0.03 parts by mass of catalyst, heated to 75 ° C for 1.5 h; then added 2.5 parts by mass of small molecule chain extender, 5 parts by mass of a hydrophilic chain extender and 0.45 parts by mass of a crosslinking agent, heat up to 88°C for 3 hours, cool down to room temperature, and then add (appropriate amount) neutralizing agent to carry out neutralization reaction, so that the pH (of the reaction material) = 6~ 7. The phosphorus-silicon flame-retardant polyurethane prepolymer is obtained; add 2.5 parts by mass of deionized water to the reactor under (high-speed) stirring...

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Abstract

The invention discloses a preparation method of a waterborne phosphorus-silicon flame-retardant polyurethane coating material. The preparation method is characterized by comprising the following steps: adding 33-57 parts of anhydrous phosphorus-containing polyester polyol by mass, 10-29 parts of polydimethylsiloxane by mass and 5-15 parts of a solvent by mass into a reactor, uniformly stirring, adding 15-30 parts of diisocyanate by mass and 0.01-0.05 part of a catalyst by mass, heating to 60-90 DEG C, and reacting for 1-2h; adding 1-4 parts of a small molecular chain extender by mass, 2-8 parts of a hydrophilic chain extender by mass and 0.1-0.8 part of a cross-linking agent by mass, heating to 75-90 DEG C, reacting for 2-4h, cooling to room temperature, and adding a neutralizer to make pHto be 6-7; adding 1-4 parts of deionized water by mass, stirring into an emulsion, performing vacuum distillation to remove the solvent to obtain the waterborne phosphorus-silicon flame-retardant polyurethane coating material. The waterborne phosphorus-silicon flame-retardant polyurethane coating material is suitable to be used as a surface covering material for textiles, leather, wood and steelstructural buildings, and has high transparency and flexibility.

Description

technical field [0001] The invention belongs to the preparation of flame-retardant polyurethane, and relates to a preparation method of a water-based phosphorus-silicon flame-retardant polyurethane coating material. The water-based phosphorus-silicon flame-retardant polyurethane coating material prepared by the invention has high transparency and flexibility, and is suitable for use as a surface coating covering material for textiles, leather, wood structures, and steel structure buildings. Background technique [0002] Flame-retardant water-based polyurethane is widely used in fire safety protection of textiles, leather, wood and steel structures. With the increasing improvement of environmental protection regulations and the enhancement of people's awareness of environmental safety, the use of traditional additive-type halogen-based flame-retardant waterborne polyurethane has been strongly rejected by the market. Although conventional phosphorus-based flame retardants are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/06C09D5/18C08G18/32C08G18/34C08G18/46C08G18/61C08G18/66D06M15/572D06M101/32
CPCC08G18/3206C08G18/3271C08G18/348C08G18/4684C08G18/61C08G18/664C08G18/6655C08G18/6659C09D5/18C09D175/06D06M15/572D06M2101/32D06M2200/30D06M2200/50
Inventor 周友陈维敏陈立兴邹静
Owner SICHUAN DONGFANG INSULATING MATERIAL
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