CN106220811B - A kind of non-reactive flexible polyurethane foams flame plastering agent and its preparation method and application - Google Patents

A kind of non-reactive flexible polyurethane foams flame plastering agent and its preparation method and application Download PDF

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CN106220811B
CN106220811B CN201610719012.9A CN201610719012A CN106220811B CN 106220811 B CN106220811 B CN 106220811B CN 201610719012 A CN201610719012 A CN 201610719012A CN 106220811 B CN106220811 B CN 106220811B
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flame
polyurethane foams
flexible polyurethane
plastering agent
foam
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CN106220811A (en
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金译平
牛丽丹
朱云彪
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ZHEJIANG WANSHENG Co Ltd
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ZHEJIANG WANSHENG Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/65Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
    • C08G18/66Compounds of groups C08G18/42, C08G18/48, or C08G18/52
    • C08G18/6633Compounds of group C08G18/42
    • C08G18/6637Compounds of group C08G18/42 with compounds of group C08G18/32 or polyamines of C08G18/38
    • C08G18/664Compounds of group C08G18/42 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/2805Compounds having only one group containing active hydrogen
    • C08G18/2815Monohydroxy compounds
    • C08G18/282Alkanols, cycloalkanols or arylalkanols including terpenealcohols
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30Low-molecular-weight compounds
    • C08G18/32Polyhydroxy compounds; Polyamines; Hydroxyamines
    • C08G18/3203Polyhydroxy compounds
    • C08G18/3206Polyhydroxy compounds aliphatic
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40High-molecular-weight compounds
    • C08G18/42Polycondensates having carboxylic or carbonic ester groups in the main chain
    • C08G18/4205Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups
    • C08G18/4208Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups containing aromatic groups
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/65Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
    • C08G18/66Compounds of groups C08G18/42, C08G18/48, or C08G18/52
    • C08G18/6603Compounds of groups C08G18/42, C08G18/48, or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
    • C08G18/6607Compounds of groups C08G18/42, C08G18/48, or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2110/00Foam properties
    • C08G2110/0083Foam properties prepared using water as the sole blowing agent

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Medicinal Preparation (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

The present invention relates to a kind of non-reactive flexible polyurethane foams flame plastering agent and its preparation method and application.The plastering agent is made up of low molecular weight diols, benzoic anhydride polyester polyol, monohydric alcohol and the crosslinked reaction of aromatic isocyanate, and the percentage by weight of each raw material is:1 50% low molecular weight diols;20 60% benzoic anhydride polyester polyols;1 30% monohydric alcohol;30 70% aromatic isocyanates;The flame plastering agent is used to prepare and is used for the flexible polyurethane foams that flame is fitted, its consumption is the 1 10% of foam gross weight, what is prepared is used for the flexible polyurethane foams that flame is fitted, relatively other response type flame plastering agents, while with equal laminating effect, the tolerance that also improves foam formulation, the stability for improving foam fabrication process and the performance for improving final foamed product.

Description

A kind of non-reactive flexible polyurethane foams with flame plastering agent and preparation method thereof and Using
Technical field
The present invention relates to a kind of non-reactive flexible polyurethane foams flame plastering agent and its preparation method and application, tool Body be related to the flame plastering agent be made and its prepare be used for flame fit flexible polyurethane foams in use, the fire Flame plastering agent is compared with traditional flame plastering agent, because it is non-reactive flame plastering agent, it is being prepared flame laminating use The smaller influence to process and the influence to final foaming properties are shown during flexible polyurethane foams.
Background technology
Flexible polyurethane foams are widely used to every field, such as furniture, automobile, aircraft.In substantial amounts of application, Need by laminating, to form a kind of compound between polyurethane foam and base material (such as timber, fabric, metal or plastic material) Material.A kind of method is to lead to foam and fabric to fit for additional alite paste, and another method is to lead to foam and base material Cross flame hot-melting resolidification and fit, do not use extra additive.Here, generally by flame interaction by polyurethane foam Surface hot melt be changed into stickum, then substrate layer is closed.It is changed into solid after waiting stickum cooling again, and obtains Very lasting combination between polyurethane foam and base material.This method is initially appropriate only for the polyurethane of polyester type, because It can not be cured sufficiently after the cooling period for the polyurethane of polyether type, and generally there is excessively poor adhesive force.Therefore polyethers is worked as When polyurethane foam is used for flame laminating, additional flame plastering agent is generally needed to strengthen the adhesive force of foam and base material.
US3131105 describes the method for preparing polyurethane foam laminating thing, wherein the coating comprising combustible material is applied The surface of polyurethane foam is added to, the coating is then lighted, makes surface melting, then other surface material layers are applied under stress To plastic foam surface.This method does not disclose and additive is added into foam;US3142650 and 3142651 describe by containing Hydroxyl phosphite ester such as three (polypropylene glycol) phosphite ester starting prepares polyurethane.Do not disclose and prepared based on polyurethane foam Flame laminating thing;US3205105 and US3205120 describe the preparation of the flame laminating thing of polyetherurethane foam.Pass through The a small amount of low molecular weight polyols of addition, the day selected from polyoxyalkylene polyol, phosphorous sour hydroxyaliphatic ester and hydroxyl Right oil compounds increase adhesive force, but critical defect is that foam will investigate whole formula in preparation process, while also easily going out The series of problems such as existing foam closed pore, contraction, Huang Xin;US3497416 describes the flame laminating thing of polyetherurethane foam Prepare.It is different by adding DPG or dibutylene glycol and excessive fragrant adoption in the foam to improve Foam machining process The plastering agent that polyisocyanate reactant is obtained is realized.But the easy closed pore of foam is still had using the plastering agent, it is necessary to extra addition again Pore-creating agent such as dimethylformamide;US4060439 describes polyetherurethane foam by adding the two of 2-8 carbon atom The glycol of the dialkanol amine and some short chains of the triol of alcohol or 3-10 carbon atom and 2-10 carbon atom, triol increase patch With joint efforts, the addition of these materials, the formula border for preparing foam is very narrow, it is difficult to balance the cracking and closed pore of foam. CN201010273111 describes polyetherurethane foam by adding phosphorous hydroxy-containing compounds such as two (polyethylene glycol oxide) The Pluronic F-127 ether of hydroxymethylphosphonate, three (DPG) phosphite esters and glycerine or bisphenol-A reduces discharge, improves Initial adhesive force etc., but the problems such as equally exist unstable Foam machining process, easy closed pore, yellow core.
In the scheme of above-mentioned all prior arts, although obtaining ether-based foam by adding each flame plastering agent Improved laminating ability, but it can be found that above-mentioned each flame plastering agent contains reactive group such as hydroxyl or isocyanates Base, due to their reactivity, makes to change the original structure of foam in the progress for preparing foam, be degrading prepare into Journey, while making the performance of foam occur big change, there is closed pore, Huang Xin in such as foam.
The content of the invention
For the above-mentioned problems in the prior art, it is an object of the invention to provide a kind of non-reactive flexibel polyurethane Foam flame plastering agent and its preparation method and application, the common defects existed compared to above-mentioned all kinds of flame plastering agents-anti- Ying Xing, flame plastering agent of the invention is used in the flexible polyurethane foams that flame is fitted because it is non-reacted preparing, Foam original formulation need not be changed, and prepare process and foaming properties to foam does not influence substantially.
Described a kind of non-reactive flexible polyurethane foams flame plastering agent, it is characterised in that by following weight percent Than for component composition:1-49% low molecular weight diols;20-60% benzoic anhydride polyester polyols;1-30% monohydric alcohols;30- 70% aromatic isocyanate.
Described a kind of non-reactive flexible polyurethane foams flame plastering agent, it is characterised in that low molecular weight diols are One or more of mixtures in ethylene glycol, diethylene glycol, propane diols, DPG, butanediol, hexylene glycol, pentanediol.
A kind of described non-reactive flexible polyurethane foams flame plastering agent, it is characterised in that benzoic anhydride polyester polyol For containing the aromatic series composition based on phthalic acid and its derivative, the average functionality of the benzoic anhydride polyester polyol is 1.8-2.5, average hydroxyl value is 50-400mgKOH/g, hydroxyl value " refer to that per unit weight material contains and can be reacted with isocyanates The concentration of hydroxyl, commercially produced product is such as:Si Taipan (Nanjing) Chemical Co., Ltd.:STEPANOL PS-3152, STEPANOL PS-2402, STEPANOL PS-2002, STEPANOL PS-1752, STEPANOL PS-1552 etc..
Described a kind of non-reactive flexible polyurethane foams flame plastering agent, it is characterised in that the phthalic anhydride polyester is more First alcohol contains hydroxylating composition, its hydroxylating composition be ethylene glycol, propane diols, butanediol, diethylene glycol, DPG, glycerine, One or more of mixtures in trimethylolpropane.
A kind of described non-reactive flexible polyurethane foams flame plastering agent, it is characterised in that monohydric alcohol be methanol, One or more of mixtures in ethanol, isopropanol, n-butanol, isobutanol, amylalcohol, isooctanol.
A kind of described non-reactive flexible polyurethane foams flame plastering agent, it is characterised in that aromatic isocyanate For toluene di-isocyanate(TDI), '-diphenylmethane diisocyanate or both mixture.
Described non-reactive flexible polyurethane foams flame plastering agent, it is characterised in that by low molecular weight diols, benzene Acid anhydride PEPA, monohydric alcohol and the crosslinked reaction of aromatic isocyanate are made, and NCO and hydroxyl are fitted in flame Weight percentage in agent is respectively less than 0.5%, the detection of isocyanate content be by using excess toluene-di-n-butylamine with Isocyanates reacts, then is obtained with the di-n-butylamine of hydrogen chloride overtitration;The detection of hydroxy radical content be by hydroxyl with it is molten Phthalic anhydride of the solution in pyridine carries out esterification, and excessive phthalic anhydride is titrated with standard solution of sodium hydroxide To obtain, the composition principle and the ripe prior art of synthesis condition system the art of flame plastering agent of the invention, it is closed It is to react to form carbamate and carry out using hydroxyl and isocyanates into principle, the synthesis condition does not have strict limitation, Can having, without catalyst under conditions of carry out;Also it can be carried out in normal pressure, negative pressure or environment with pressure;Reaction temperature is preferred 10-120 degree.
Described non-reactive flexible polyurethane foams are preparing the soft poly- ammonia for flame laminating with flame plastering agent Application in ester foam.
Described application, it is characterised in that non-reactive flexible polyurethane foams are that foam is total with the consumption of flame plastering agent The 1-10% of weight, prepares the flexible polyurethane foams fitted for flame and also includes isocyanates, polyalcohol, phosphor-containing flame-proof Agent, foaming agent, foam stabilizer and catalyst;Polyalcohol is PPOX-polyoxyethylated polyols, it is however preferred to have 2-5's Degree of functionality and the PPG that number-average molecular weight is 1000-5000, commercially produced product is such as:Shanghai Gaoqiao petrochemical corporation (complex): GEP-560S, Jin Hua Chemical Group Co., Ltd JH-3030, CNOOC and Shell Petrochemicals Co., Ltd SC-5602 etc.;Institute The isocyanates stated is diphenyl methane 4,4 '-diisocyanate, toluene di-isocyanate(TDI) or two ability mixtures;The phosphorous resistance Combustion agent is liquid organic phosphorus compound, preferably diethylene glycol double (two-chloro isopropyl phosphate) (WSFR-504L), the tert-butyl groups Change triphenyl (WSFR-HF-4), triethyl phosphate (TEP), three (the chloro- 2- propyl group of 1-) phosphates (TCPP) and three (2- Chloroethyl) phosphate (TCEP), dimethylmethane phosphonate ester (DMMP) or one kind in dimethylpropane phosphonate ester (DMPP) or Several mixtures;Foaming agent is water, dichloromethane, formic acid or pentane;Catalyst is triethylene diamine, stannous octoate, double diformazans Amido ethylether, dimethylaminoethanol or dimethyl amino ethoxy ethanol, commercially produced product is such as:US Air gasification chemical product Dabco 33LV, Dabco BL11, the Dabco T9 of Co., Ltd;Foam stabilizer is polyethergpolysiloxane condensation polymer, business Change product such as:B8110, B8123, B8232 of Degussa (China) Co., Ltd;Mai Tu new and high technologies Materials Co., Ltd of the U.S. L-580, L-618 etc..
By using above-mentioned technology, compared with prior art, beneficial effects of the present invention are as follows:
1) present invention by by low molecular weight diols, benzoic anhydride polyester polyol, monohydric alcohol by with aromatic isocyanate Cross-linking reaction, synthesis is substantially free of the non-reactive flame plastering agent of NCO (- NCO) and hydroxyl (- OH), and with the fire Flame plastering agent prepares the flexible polyurethane foams fitted for flame, is fitted on an equal basis effect with previous reaction type flame plastering agent While, the tolerance that improves foam formulation, the stability for improving foam fabrication process and improve final foamed product Performance;
2) the flame plastering agent that the present invention is obtained is preparing the flexible polyurethane foams for flame laminating, and its consumption is limited It is set to the 1-10% of foam gross weight, when consumption is less than 1%, flame laminating effect can not reach requirement;When consumption is big When 10%, the other performance to foam has a negative impact.
The described preparation method for the flexible polyurethane foams that flame is fitted that is used for is the ripe prior art in this area, can Carried out by one-step method or prepolymer method, the representative formula of the one-step synthesis method is as shown in table 1.
The one-step method representative formula of table 1 is as follows:Foam density 25KG/M3
Raw material Consumption (in parts by weight)
PPG GEP-560S 100
Phosphonium flame retardant (WSFR-504L) 12
Flame plastering agent 5
Foam stabilizer L-580 1.0
Catalyst Dabco 33LV 0.2
Dabco T9 0.25
Foaming agent water 4.5
Isocyanates TDI 57.5
TDI indexes 110
Its preparation procedure is as follows:
Prepare what a 400mm*400mm*400mm chest in advance as foaming mould.The polyethers that first upper table is arranged Polyalcohol, phosphonium flame retardant, flame plastering agent, catalyst, foam stabilizer and water are weighed into a plastic containers by weight, with turn Speed reaches that 3000 revs/min of agitator is quickly mixed 1 minute, is well mixed material.It will in advance weigh again and be placed on another appearance Isocyanate compound TDI in device is added in above-mentioned compound, after 1000 revs/min quickly mix 10 seconds, is quickly fallen Enter and foamed in the foaming mould got ready in advance, while counting record compound from mould is poured into time during frothy gel and bubble Whether punching phenomenon is had when foam rises to highest order.After the completion of foaming, then at room temperature place 24 hours after, meter record foam whether have Shrinkage phenomenon, and other performance.Foam is cut into 4cm*15cm*1cm foam strip, (such as polyester-cotton blend is knitted with base material through flame fusing Thing) the obtained foam flame laminating thing of laminating.
Prepared by foam flame laminating thing laboratory is summarized as follows:
First foam batten and base material are horizontally fixed on two ceramics respectively, by the foam of foam batten downwards, water The flame regulated in advance that flat, constant speed (10cm/s) is produced by using natural gas range, makes foam batten all by flame, table Face is slightly melted, and is quickly pasted into the ceramics for being fixed with fabric substrate, then two ceramics of light pressure is after 1 hour, determines it and peels off (patch Close) intensity.
(laminating) strength testing method is peeled off according to ISO 8067,07/1995, with 100mm/min peeling rate, test stripping From intensity, unit (N), the measure of foam rebound performance GB/T6670-2008 flexible polyurethane foam rebound performances, foam Collapse the measure (collapsing method) of performance GB/T10807-2006 flexible foam polymeric material hardness.
Embodiment
Following embodiments are used to further describe the explanation present invention, and they are not to be construed as the limit to the scope of the present invention System.
Embodiment 1-5 is the preparation of non-reactive flexible polyurethane foams flame plastering agent of the present invention.
Low molecular weight diols, benzoic anhydride polyester polyol are added in four mouthfuls of reaction bulbs, vacuumizes, stir, and be warming up to 90 DEG C, it is dehydrated 30 minutes, turns off vacuum, be passed through nitrogen, cools to 70 DEG C of dropwise addition aromatic isocyanates, 70 DEG C of insulations after dripping off 1 hour, then the monohydric alcohol for the amount of skipping over is added dropwise, 70 DEG C of insulations 1 hour or so again after dripping off, sampling detection isocyanate content, when When content is less than 0.1%, reaction terminates, and removal low volatility materials are vacuumized again, obtains flame plastering agent of the present invention, enters one Step knot surveys the technical indicators such as hydroxyl value, the viscosity of product.Feed intake formula and experimental data be shown in Table 2.
The flame plastering agent of table 2 is prepared with when experimental data
Embodiment 4-11 is to be formulated flame plastering agent of the present invention and non-invention flame plastering agent carrying out foam system by table 1 Standby and performance detection, as shown in table 3, wherein comparing embodiment (13) is prepared and property its result for the foam of non-flame enrichment flame plastering agent Energy.
The preparation of the flame laminating polyurethane foam of table 3 and performance
Note:P-430 is three (dipropylene glycol) phosphite esters in table 3
PS-3152 is the benzoic anhydride polyester polyol of Si Taipan companies, and hydroxyl value is:300-330mgKOH/g
Result, which is prepared, from the foam of table 3 shows that preparation and performance of the flame plastering agent of the present invention on foam there are not influence substantially, And routinely qualified foam can not be made in foaming formulation to non-invention flame plastering agent.
Comparing embodiment 14-15 is adjusted by foam formulation, with foam and performance made from non-invention flame plastering agent, As a result it is as shown in table 4.
Foam and performance made from the non-invention flame plastering agent of table 4
Note:Pore-creating agent Y-8331 is South Korea's SKC Products in table 4, for promoting foamed open cell
By above-described embodiment 7, embodiment 8, embodiment 9, embodiment 10, embodiment 11, comparing embodiment 13, compare implementation After foam made from example 14, comparing embodiment 15 fits thing through sample preparation into flame, (laminating) intensity such as table 5 below is peeled off in test.
The peel strength (N/50mm) of flame laminating thing made from each embodiment of table 5
Table 5 is shown, is pasted added with flame plastering agent of the present invention with adding flame prepared by existing response type flame plastering agent Its peel strength of compound is essentially the same, and is not added with the then peel strength very little of flame plastering agent.

Claims (8)

1. a kind of non-reactive flexible polyurethane foams flame plastering agent, it is characterised in that by the component of following percentage by weight Crosslinked reaction is made:1-49% low molecular weight diols;20-60% benzoic anhydride polyester polyols;1-30% monohydric alcohols;30-78% virtues Fragrant race's isocyanates, low molecular weight diols are ethylene glycol, diethylene glycol, propane diols, DPG, butanediol, hexylene glycol, penta 2 One or more of mixtures in alcohol.
2. a kind of non-reactive flexible polyurethane foams flame plastering agent according to claim 1, it is characterised in that benzene Acid anhydride PEPA be containing the aromatic series composition based on phthalic acid and its derivative, the benzoic anhydride polyester polyol it is flat Equal degree of functionality is 1.8-2.5, and average hydroxyl value is 50-400mgKOH/g.
3. a kind of non-reactive flexible polyurethane foams flame plastering agent according to claim 1, it is characterised in that institute State benzoic anhydride polyester polyol and contain hydroxylating composition, its hydroxylating composition is ethylene glycol, propane diols, butanediol, diethylene glycol, two One or more of mixtures in propane diols, glycerine, trimethylolpropane.
4. a kind of non-reactive flexible polyurethane foams flame plastering agent according to claim 1, it is characterised in that one First alcohol is one or more of mixtures in methanol, ethanol, isopropanol, n-butanol, isobutanol, amylalcohol, isooctanol.
5. a kind of non-reactive flexible polyurethane foams flame plastering agent according to claim 1, it is characterised in that virtue Fragrant race's isocyanates is toluene di-isocyanate(TDI), '-diphenylmethane diisocyanate or both mixture.
6. it is a kind of according to any described non-reactive flexible polyurethane foams flame plastering agents of claim 1-5, its feature It is to be made up of low molecular weight diols, benzoic anhydride polyester polyol, monohydric alcohol and the crosslinked reaction of aromatic isocyanate, isocyanic acid The weight percentage of ester group and hydroxyl in flame plastering agent is respectively less than 0.5%.
7. a kind of non-reactive flexible polyurethane foams flame plastering agent according to claim 1 is used to prepare flame patch Share the application of flexible polyurethane foams.
8. application according to claim 7, it is characterised in that non-reactive flexible polyurethane foams flame plastering agent Consumption is the 1-10% of flame laminating flexible polyurethane foams gross weight, the flame laminating of preparation with flexible polyurethane foams also Include isocyanates, polyalcohol, phosphonium flame retardant, foaming agent, foam stabilizer and catalyst.
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