CN111777733A - Flame-retardant isocyanate mixture for polyurethane foaming product - Google Patents
Flame-retardant isocyanate mixture for polyurethane foaming product Download PDFInfo
- Publication number
- CN111777733A CN111777733A CN202010791490.7A CN202010791490A CN111777733A CN 111777733 A CN111777733 A CN 111777733A CN 202010791490 A CN202010791490 A CN 202010791490A CN 111777733 A CN111777733 A CN 111777733A
- Authority
- CN
- China
- Prior art keywords
- flame
- retardant
- isocyanate
- parts
- product
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4804—Two or more polyethers of different physical or chemical nature
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4825—Polyethers containing two hydroxy groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/315—Compounds containing carbon-to-nitrogen triple bonds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
- C08K5/5205—Salts of P-acids with N-bases
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2101/00—Manufacture of cellular products
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention discloses a flame-retardant isocyanic acid radical mixture for a polyurethane foaming product, which comprises isocyanate, polyether, polyethylene glycol, a phosphorus-containing flame retardant, a ferrous salt solution, a copper salt solution, concentrated sulfuric acid and a carbon monoxide absorbent, by adding Fe2+ and Cu2+ into the mixture, the complete consumption of free isocyanate is realized, the generation of toxic gas during the combustion of the free isocyanate is avoided, and the formed product contains copper ferrocyanide, when the surface of the polyurethane foaming product is heated and burned, the copper ferrocyanide can react with concentrated sulfuric acid to generate CO, and CO is converted into CO2 by the carbon monoxide absorbent, the flame retardant effect of the material is further improved, and N2 generated during the violent combustion of the copper ferrocyanide can be used as inert gas of a protective material to replace oxygen in the air, so that the material is prevented from being combusted or exploded, the flame retardant effect is better, and the practicability is better.
Description
Technical Field
The invention relates to the technical field of macromolecules, in particular to a flame-retardant isocyanate mixture for a polyurethane foaming product.
Background
Present polyurethane foaming is fire retardant for product is mostly single phosphorus class fire retardant, phosphorus high temperature liquefaction forms the isolated air of oil film during the burning, but the phenomenon of pulling of phosphorus class fire retardant is comparatively serious, fire-retardant effect attenuates gradually along with the live time, if adopt isocyanate and fire-retardant polyether reaction, produce fire-retardant polyurea composition, then can fine solution phosphorus class fire retardant pull the problem, but isocyanate produces a large amount of free isocyanic radicals easily in the reaction sequence, isocyanic radical can produce toxic gas when burning, cause the injury to the human body, the security is not good.
Disclosure of Invention
The invention aims to provide a flame-retardant isocyanate mixture for a polyurethane foaming product, which has better flame-retardant effect and is safer in use, so as to solve the problems that isocyanate proposed in the background technology is easy to generate a large amount of free isocyanate in the reaction process, and the isocyanate generates toxic gas during combustion, so that the isocyanate is harmful to human bodies and has poor safety.
In order to achieve the purpose, the invention adopts the following technical scheme:
the flame-retardant isocyanate mixture for the polyurethane foaming product comprises the following components in parts by weight: 20-30 parts of isocyanate, 20-30 parts of polyether, 0-15 parts of polyethylene glycol, 10-15 parts of phosphorus-containing flame retardant, 20-30 parts of ferrous salt solution, 5-10 parts of copper salt solution, 2-8 parts of concentrated sulfuric acid and 2-8 parts of carbon monoxide absorbent.
Preferably, the isocyanate is one or more of toluene diisocyanate, hexamethylene diisocyanate and lysine diisocyanate, the isocyanate content in the isocyanate is 30-40%, and the free isocyanate content in the product obtained by reacting the isocyanate with the polyether is not more than 3%.
Preferably, the phosphorus-containing flame retardant is a mixture of melamine polyphosphate, graphite, flame-retardant polyether and white polyether, and the addition ratio of the melamine polyphosphate to the mixture of the graphite to the mixture of the flame-retardant polyether to the white polyether is 1:1:10: 6.
Preferably, the content of Fe2+ in the ferrous salt solution is not less than 3%.
Preferably, the content of Cu2+ in the copper salt solution is not lower than the content of Fe2+ in the ferrous salt solution.
Preferably, the carbon monoxide absorbent is 54% copper diammine acetate.
The invention also provides a preparation method of the flame-retardant isocyanate mixture for the polyurethane foaming product, which comprises the following steps:
s1, putting 20-30 parts of isocyanate, 20-30 parts of polyether and 0-15 parts of polyethylene glycol into a reaction vessel provided with a reflux condenser tube and a stirrer, introducing nitrogen for protection, heating to 65 ℃, and reacting for 3 hours;
s2, reducing the pressure inside the reaction container, adding 5-7.5 parts of phosphorus-containing flame retardant into the reaction container when the pressure inside the reaction container is reduced to 0MPa, fully stirring, and cooling to room temperature to obtain a flame-retardant isocyanic acid radical product A;
s3, adding the isocyanic acid radical product A into a reaction container containing 20-30 parts of ferrous salt solution, adding a small amount of catalyst, heating to 80 ℃ for reaction for 1h, adding 5-10 parts of copper salt solution into the reaction container, and reacting until reddish brown precipitate is generated in the container;
s4, cooling the reaction container, adding 2-8 parts of concentrated sulfuric acid and 2-8 parts of carbon monoxide absorbent, fully stirring, heating to 30 ℃ for reaction until no bubbles are generated, and obtaining a flame-retardant isocyanic acid radical product B;
s5, carrying out deammoniation treatment and dehydration treatment on the isocyanate product B with flame retardance to obtain an isocyanate product C with flame retardance;
s6, adding the remaining 5-7.5 parts of phosphorus-containing flame retardant into the flame-retardant isocyanate product C, and fully stirring at room temperature to obtain the flame-retardant isocyanate mixture for the polyurethane foaming product.
Preferably, the water content of the flame retardant isocyanate product C is not more than 1%.
According to the flame-retardant isocyanate mixture for the polyurethane foaming product, provided by the invention, the complete consumption of free isocyanate is realized by adding Fe2+ and Cu2+ into the mixture, the generation of toxic gas during the combustion of the free isocyanate is avoided, the formed product contains copper ferrocyanide, when the surface of the polyurethane foaming product is heated and combusted, the copper ferrocyanide can react with concentrated sulfuric acid to generate CO, the CO is converted into CO2 through a carbon monoxide absorbent, the flame retardant effect of the material is further improved, N2 generated during the violent combustion of the copper ferrocyanide can be used as inert gas of a protective material to replace oxygen in the air, the material is prevented from being combusted or exploded, the flame retardant effect is better, and the practicability is better.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
The flame-retardant isocyanate mixture for the polyurethane foaming product comprises the following components in parts by weight: 20 parts of isocyanate, 20 parts of polyether, 10 parts of polyethylene glycol, 10 parts of phosphorus-containing flame retardant, 20 parts of ferrous salt solution, 5 parts of copper salt solution, 7 parts of concentrated sulfuric acid and 8 parts of carbon monoxide absorbent, the isocyanate is one or more of toluene diisocyanate, hexamethylene diisocyanate and lysine diisocyanate, the content of isocyanate in the isocyanate is 30%, the content of free isocyanate in a product obtained after the isocyanate reacts with polyether is not more than 3%, the phosphorus-containing flame retardant is a mixture of melamine polyphosphate, graphite, flame-retardant polyether and white polyether, the adding ratio of the mixture of the melamine polyphosphate, the graphite, the flame-retardant polyether and the white polyether is 1:1:10:6, the content of Fe2+ in a ferrous salt solution is not less than 3%, the content of Cu2+ in a copper salt solution is not less than the content of Fe2+ in the ferrous salt solution, and the carbon monoxide absorbent is 54% of diammine acetate.
Example 2
The flame-retardant isocyanate mixture for the polyurethane foaming product comprises the following components in parts by weight: 20 parts of isocyanate, 20-parts of polyether, 10 parts of polyethylene glycol, 10 parts of phosphorus-containing flame retardant, 20 parts of ferrous salt solution, 5 parts of copper salt solution, 7 parts of concentrated sulfuric acid and 8 parts of carbon monoxide absorbent, the isocyanate is one or more of toluene diisocyanate, hexamethylene diisocyanate and lysine diisocyanate, the content of isocyanate in the isocyanate is 40%, the content of free isocyanate in a product obtained after the isocyanate reacts with polyether is not more than 3%, the phosphorus-containing flame retardant is a mixture of melamine polyphosphate, graphite, flame-retardant polyether and white polyether, the adding ratio of the mixture of the melamine polyphosphate, the graphite, the flame-retardant polyether and the white polyether is 1:1:10:6, the content of Fe2+ in a ferrous salt solution is not less than 3%, the content of Cu2+ in a copper salt solution is not less than the content of Fe2+ in the ferrous salt solution, and the carbon monoxide absorbent is 54% of diammine acetate.
Example 3
The flame-retardant isocyanate mixture for the polyurethane foaming product comprises the following components in parts by weight: 30 parts of isocyanate, 20 parts of polyether, 10 parts of phosphorus-containing flame retardant, 20 parts of ferrite solution, 5 parts of copper salt solution, 7 parts of concentrated sulfuric acid and 8 parts of carbon monoxide absorbent, wherein the isocyanate is toluene diisocyanate, one or more of hexamethylene diisocyanate and lysine diisocyanate, wherein the content of isocyanate in isocyanate is 30%, the content of free isocyanate in a product obtained after the isocyanate reacts with polyether is not more than 3%, the phosphorus-containing flame retardant is a mixture of melamine polyphosphate, graphite, flame-retardant polyether and white polyether, the adding proportion of the mixture of the melamine polyphosphate, the graphite, the flame-retardant polyether and the white polyether is 1:1:10:6, the content of Fe2+ in a ferrous salt solution is not less than 3%, the content of Cu2+ in a copper salt solution is not less than the content of Fe2+ in the ferrous salt solution, and the carbon monoxide absorbent is 54% of diammine copper acetate.
Example 4
The flame-retardant isocyanate mixture for the polyurethane foaming product comprises the following components in parts by weight: 20 parts of isocyanate, 30 parts of polyether, 10 parts of phosphorus-containing flame retardant, 20 parts of ferrite solution, 5 parts of copper salt solution, 7 parts of concentrated sulfuric acid and 8 parts of carbon monoxide absorbent, wherein the isocyanate is toluene diisocyanate, one or more of hexamethylene diisocyanate and lysine diisocyanate, wherein the content of isocyanate in isocyanate is 30%, the content of free isocyanate in a product obtained after the isocyanate reacts with polyether is not more than 3%, the phosphorus-containing flame retardant is a mixture of melamine polyphosphate, graphite, flame-retardant polyether and white polyether, the adding proportion of the mixture of the melamine polyphosphate, the graphite, the flame-retardant polyether and the white polyether is 1:1:10:6, the content of Fe2+ in a ferrous salt solution is not less than 3%, the content of Cu2+ in a copper salt solution is not less than the content of Fe2+ in the ferrous salt solution, and the carbon monoxide absorbent is 54% of diammine copper acetate.
Example 5
The flame-retardant isocyanate mixture for the polyurethane foaming product comprises the following components in parts by weight: 30 parts of isocyanate, 20 parts of polyether, 10 parts of phosphorus-containing flame retardant, 20 parts of ferrite solution, 5 parts of copper salt solution, 7 parts of concentrated sulfuric acid and 8 parts of carbon monoxide absorbent, wherein the isocyanate is toluene diisocyanate, one or more of hexamethylene diisocyanate and lysine diisocyanate, wherein the content of isocyanate in isocyanate is 40%, the content of free isocyanate in a product obtained after the isocyanate reacts with polyether is not more than 3%, the phosphorus-containing flame retardant is a mixture of melamine polyphosphate, graphite, flame-retardant polyether and white polyether, the adding proportion of the mixture of the melamine polyphosphate, the graphite, the flame-retardant polyether and the white polyether is 1:1:10:6, the content of Fe2+ in a ferrous salt solution is not less than 3%, the content of Cu2+ in a copper salt solution is not less than the content of Fe2+ in the ferrous salt solution, and the carbon monoxide absorbent is 54% of diammine copper acetate.
Example 6
The flame-retardant isocyanate mixture for the polyurethane foaming product comprises the following components in parts by weight: 20 parts of isocyanate, 30 parts of polyether, 10 parts of phosphorus-containing flame retardant, 20 parts of ferrite solution, 5 parts of copper salt solution, 7 parts of concentrated sulfuric acid and 8 parts of carbon monoxide absorbent, wherein the isocyanate is toluene diisocyanate, one or more of hexamethylene diisocyanate and lysine diisocyanate, wherein the content of isocyanate in isocyanate is 40%, the content of free isocyanate in a product obtained after the isocyanate reacts with polyether is not more than 3%, the phosphorus-containing flame retardant is a mixture of melamine polyphosphate, graphite, flame-retardant polyether and white polyether, the adding proportion of the mixture of the melamine polyphosphate, the graphite, the flame-retardant polyether and the white polyether is 1:1:10:6, the content of Fe2+ in a ferrous salt solution is not less than 3%, the content of Cu2+ in a copper salt solution is not less than the content of Fe2+ in the ferrous salt solution, and the carbon monoxide absorbent is 54% of diammine copper acetate.
The invention also provides a preparation method of the flame-retardant isocyanate mixture for the polyurethane foaming product, which comprises the following steps:
s1, putting 20-30 parts of isocyanate, 20-30 parts of polyether and 0-15 parts of polyethylene glycol into a reaction container provided with a reflux condenser tube and a stirrer, introducing nitrogen for protection, heating to 65 ℃, and reacting for 3 hours, wherein isocyanato in the isocyanate reacts with the polyether to form a polyurea component, and the polyurea component is a non-combustible material with good corrosion resistance, water resistance and wear resistance, so that the flame retardant property of the product can be enhanced and the product quality can be improved;
s2, reducing the pressure in the reaction container, adding 5-7.5 parts of phosphorus-containing flame retardant into the reaction container when the pressure in the reaction container is reduced to 0MPa, fully stirring, and cooling to room temperature to obtain a flame-retardant isocyanic acid radical product A, wherein the flame-retardant isocyanic acid radical product A contains free isocyanic acid radical which is not completely reacted;
s3, adding the isocyanic acid radical product A into a reaction container containing 20-30 parts of ferrous salt solution, adding a small amount of catalyst, heating to 80 ℃ for reaction for 1h, adding 5-10 parts of copper salt solution into the reaction container, reacting until reddish brown precipitate is generated in the container, reacting free isocyanic acid radical with ferrous ions in the ferrous salt solution, and generating reddish brown copper ferrocyanide in the environment of the copper salt solution;
s4, cooling the reaction container, adding 2-8 parts of concentrated sulfuric acid and 2-8 parts of carbon monoxide absorbent, fully stirring, heating to 30 ℃ for reaction until no bubbles are generated, and obtaining a flame-retardant isocyanic acid radical product B;
s5, carrying out deammoniation treatment and dehydration treatment on the fire-retardant isocyanate product B to obtain a fire-retardant isocyanate product C, wherein the water content of the fire-retardant isocyanate product C after dehydration is not more than 1%;
s6, adding the remaining 5-7.5 parts of phosphorus-containing flame retardant into the flame-retardant isocyanate product C, and fully stirring at room temperature to obtain the flame-retardant isocyanate mixture for the polyurethane foaming product.
In summary, the following steps: according to the flame-retardant isocyanate mixture for the polyurethane foaming product, provided by the invention, the complete consumption of free isocyanate is realized by adding Fe2+ and Cu2+ into the mixture, the generation of toxic gas during the combustion of the free isocyanate is avoided, the formed product contains copper ferrocyanide, when the surface of the polyurethane foaming product is heated and combusted, the copper ferrocyanide can react with concentrated sulfuric acid to generate CO, and the CO is converted into CO2 through a carbon monoxide absorbent, so that the flame retardant effect of the material is further improved, N2 generated during the violent combustion of the copper ferrocyanide can be used as inert gas of a protective material to replace oxygen in the air, the combustion or explosion of the material is prevented, the flame retardant effect is better, and the practicability is better.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. A flame-retardant isocyanate mixture for polyurethane foaming products is characterized in that: the flame-retardant isocyanate mixture for the polyurethane foaming product comprises the following components in parts by weight: 20-30 parts of isocyanate, 20-30 parts of polyether, 0-15 parts of polyethylene glycol, 10-15 parts of phosphorus-containing flame retardant, 20-30 parts of ferrous salt solution, 5-10 parts of copper salt solution, 2-8 parts of concentrated sulfuric acid and 2-8 parts of carbon monoxide absorbent.
2. The flame-retardant isocyanate mixture for the polyurethane foam product as claimed in claim 1, wherein: the isocyanate is one or more of toluene diisocyanate, hexamethylene diisocyanate and lysine diisocyanate, the content of the isocyanate in the isocyanate is 30-40%, and the content of free isocyanate in a product obtained by reacting the isocyanate with polyether is not more than 3%.
3. The flame-retardant isocyanate mixture for the polyurethane foam product as claimed in claim 1, wherein: the phosphorus-containing flame retardant is a mixture of melamine polyphosphate, graphite, flame-retardant polyether and white polyether, and the addition ratio of the melamine polyphosphate to the graphite to the mixture of the flame-retardant polyether and the white polyether is 1:1:10: 6.
4. The flame-retardant isocyanate mixture for the polyurethane foam product as claimed in claim 1, wherein: the content of Fe2+ in the ferrite solution is not less than 3%.
5. The flame-retardant isocyanate mixture for the polyurethane foam product as claimed in claim 1, wherein: the content of Cu2+ in the copper salt solution is not lower than the content of Fe2+ in the ferrous salt solution.
6. The flame-retardant isocyanate mixture for the polyurethane foam product as claimed in claim 1, wherein: the carbon monoxide absorbent is 54% copper diammine acetate.
7. A method for preparing a flame-retardant isocyanate mixture for polyurethane foam products as claimed in claim 1, wherein the flame-retardant isocyanate mixture comprises the following steps: the method comprises the following steps:
s1, putting 20-30 parts of isocyanate, 20-30 parts of polyether and 0-15 parts of polyethylene glycol into a reaction vessel provided with a reflux condenser tube and a stirrer, introducing nitrogen for protection, heating to 65 ℃, and reacting for 3 hours;
s2, reducing the pressure inside the reaction container, adding 5-7.5 parts of phosphorus-containing flame retardant into the reaction container when the pressure inside the reaction container is reduced to 0MPa, fully stirring, and cooling to room temperature to obtain a flame-retardant isocyanic acid radical product A;
s3, adding the isocyanic acid radical product A into a reaction container containing 20-30 parts of ferrous salt solution, adding a small amount of catalyst, heating to 80 ℃ for reaction for 1h, adding 5-10 parts of copper salt solution into the reaction container, and reacting until reddish brown precipitate is generated in the container;
s4, cooling the reaction container, adding 2-8 parts of concentrated sulfuric acid and 2-8 parts of carbon monoxide absorbent, fully stirring, heating to 30 ℃ for reaction until no bubbles are generated, and obtaining a flame-retardant isocyanic acid radical product B;
s5, carrying out deammoniation treatment and dehydration treatment on the isocyanate product B with flame retardance to obtain an isocyanate product C with flame retardance;
s6, adding the remaining 5-7.5 parts of phosphorus-containing flame retardant into the flame-retardant isocyanate product C, and fully stirring at room temperature to obtain the flame-retardant isocyanate mixture for the polyurethane foaming product.
8. The method for preparing the flame-retardant isocyanate mixture for the polyurethane foaming product as claimed in claim 7, wherein the flame-retardant isocyanate mixture comprises the following steps: the water content of the flame-retardant isocyanate product C is not more than 1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010791490.7A CN111777733A (en) | 2020-08-07 | 2020-08-07 | Flame-retardant isocyanate mixture for polyurethane foaming product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010791490.7A CN111777733A (en) | 2020-08-07 | 2020-08-07 | Flame-retardant isocyanate mixture for polyurethane foaming product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111777733A true CN111777733A (en) | 2020-10-16 |
Family
ID=72761655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010791490.7A Pending CN111777733A (en) | 2020-08-07 | 2020-08-07 | Flame-retardant isocyanate mixture for polyurethane foaming product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111777733A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4315078A (en) * | 1980-07-23 | 1982-02-09 | The Upjohn Company | Flame retardant flexible polyurethane foam containing finely divided inorganic salt wherein a mold of said salt contains at least five moles of water |
| US4523003A (en) * | 1984-01-04 | 1985-06-11 | American Cyanamid Company | Storage stable, one package, heat curable polyurea/urethane coating compositions and method of preparation |
| WO2012048888A1 (en) * | 2010-10-14 | 2012-04-19 | Tata Steel Nederland Technology B.V. | Preparation of a polyetherimide intermediate and its application on metal substrates |
| CN105601864A (en) * | 2014-11-21 | 2016-05-25 | 合肥杰事杰新材料股份有限公司 | Low-smoke low-toxicity flame-retardation hard polyurethane foam plastics and preparation method thereof |
-
2020
- 2020-08-07 CN CN202010791490.7A patent/CN111777733A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4315078A (en) * | 1980-07-23 | 1982-02-09 | The Upjohn Company | Flame retardant flexible polyurethane foam containing finely divided inorganic salt wherein a mold of said salt contains at least five moles of water |
| US4523003A (en) * | 1984-01-04 | 1985-06-11 | American Cyanamid Company | Storage stable, one package, heat curable polyurea/urethane coating compositions and method of preparation |
| WO2012048888A1 (en) * | 2010-10-14 | 2012-04-19 | Tata Steel Nederland Technology B.V. | Preparation of a polyetherimide intermediate and its application on metal substrates |
| CN105601864A (en) * | 2014-11-21 | 2016-05-25 | 合肥杰事杰新材料股份有限公司 | Low-smoke low-toxicity flame-retardation hard polyurethane foam plastics and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104558684A (en) | DOPO-containing dioxacaprophosphate flame retardant as well as preparation method and application thereof | |
| CN104479172B (en) | A kind of preparation method of the APP of Surface coating fluorine containing silicone oil | |
| CN104403546B (en) | Flame retardant polyether type single-component polyurethane waterproof paint and preparation process thereof | |
| CN104511127B (en) | A kind of extinguishing chemical and preparation method thereof of D classes fire | |
| CN108794525A (en) | A kind of preparation method of phosphonium flame retardant | |
| Liu et al. | Bio‐based nickel alginate toward improving fire safety and mechanical properties of epoxy resin | |
| CA1069699A (en) | Producing hot reducing gas | |
| CN111777733A (en) | Flame-retardant isocyanate mixture for polyurethane foaming product | |
| CN111607219B (en) | Low-smoke thermoplastic polyurethane elastomer composite material and preparation method thereof | |
| CN107459492A (en) | A kind of organically-modified melamine polyphosphate and preparation method thereof | |
| CN101781572A (en) | Method for preparing retanning-type leather fire retardant | |
| ES2942651T3 (en) | Aerosol-generating composition for fire extinguishing | |
| US3755182A (en) | Nitrogen generating compositions | |
| CN110092944A (en) | The preparation method and applications of diphenyl sulphone (DPS) nitrogen phosphorus sulphur synergistic flame retardant containing DOPO | |
| Hoffmann et al. | Selected magnesium compounds as possible inhibitors of ammonium nitrate decomposition | |
| CN107955039A (en) | A kind of oligomer type high content of phosphorus polyphosphonates halogen-free flame retardants and preparation method | |
| CN112921160A (en) | Low-hydrogen or hydrogen-free controllable atmosphere for metal heat treatment and preparation method and application thereof | |
| Gao et al. | Thermal degradation and smoke suspension of cotton cellulose modified with THPC and its lanthanide metal complexes | |
| CN101805619A (en) | Method for preparing nitrogen-phosphorus fire retardant | |
| CN110498723B (en) | New application of ammonium dihydrogen phosphate, smoke agent added with ammonium dihydrogen phosphate and preparation method of smoke agent | |
| CN111269143B (en) | Synthesis method of succinonitrile or adiponitrile | |
| US3551226A (en) | Gelled monopropellant containing hydrazine and a nonhypergolic acid gas gelling agent | |
| CN117361462A (en) | Preparation method and application of crystal II-type ammonium polyphosphate with layered structure | |
| US1921388A (en) | Process of making hydrochloric acid | |
| CN116102955B (en) | Flame-retardant epoxy floor coating and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201016 |