CN108047424A - Cushion modified MDI and preparation method - Google Patents

Cushion modified MDI and preparation method Download PDF

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Publication number
CN108047424A
CN108047424A CN201711339748.4A CN201711339748A CN108047424A CN 108047424 A CN108047424 A CN 108047424A CN 201711339748 A CN201711339748 A CN 201711339748A CN 108047424 A CN108047424 A CN 108047424A
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Prior art keywords
mdi
modified mdi
polyester
modified
cushion
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CN201711339748.4A
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CN108047424B (en
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徐军
李海朝
甘经虎
任明月
李冰
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Shandong Inov Polyurethane Co Ltd
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Shandong Inov Polyurethane Co Ltd
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    • 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
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/721—Two or more polyisocyanates not provided for in one single group C08G18/73 - C08G18/80
    • C08G18/725—Combination of polyisocyanates of C08G18/78 with other polyisocyanates
    • 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
    • C08G18/08—Processes
    • C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
    • C08G18/12—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • 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
    • C08G18/30—Low-molecular-weight compounds
    • C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
    • C08G18/3203—Polyhydroxy compounds
    • C08G18/3206—Polyhydroxy compounds aliphatic
    • 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
    • C08G18/30—Low-molecular-weight compounds
    • C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
    • C08G18/3271—Hydroxyamines
    • C08G18/3275—Hydroxyamines containing two hydroxy groups
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    • 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
    • C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
    • C08G18/4072—Mixtures of compounds of group C08G18/63 with other macromolecular compounds
    • C—CHEMISTRY; METALLURGY
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    • 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
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    • 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
    • C08G18/4829—Polyethers containing at least three hydroxy groups
    • C—CHEMISTRY; METALLURGY
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    • 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
    • C08G18/487—Polyethers containing cyclic groups
    • C08G18/4879—Polyethers containing cyclic groups containing aromatic groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • 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
    • C08G18/50—Polyethers having heteroatoms other than oxygen
    • C08G18/5096—Polyethers having heteroatoms other than oxygen containing silicon
    • 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
    • C08G18/63—Block or graft polymers obtained by polymerising compounds having carbon-to-carbon double bonds on to polymers
    • C08G18/632—Block or graft polymers obtained by polymerising compounds having carbon-to-carbon double bonds on to polymers onto 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
    • C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
    • C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
    • C08G18/6666—Compounds of group C08G18/48 or C08G18/52
    • C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
    • C08G18/6681—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38
    • C08G18/6688—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38 with compounds of group C08G18/3271
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
    • C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
    • C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
    • C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
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    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/77—Polyisocyanates or polyisothiocyanates having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
    • C08G18/78—Nitrogen
    • C08G18/79—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
    • C08G18/791—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing isocyanurate groups
    • C08G18/794—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing isocyanurate groups formed by oligomerisation of aromatic isocyanates or isothiocyanates
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    • C08G2110/00—Foam properties
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    • C08G2110/0058—≥50 and <150kg/m3
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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
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  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

The present invention relates to a kind of cushion modified MDI and preparation method, belong to polyurethane synthesis field.By weight percentage, raw material composition is：Methyl diphenylene diisocyanate is 35 50%, polymeric MDI is 30% 40%, polyesterether polyols are 15% 25%, low-molecular-weight alcohol is 2% 15%, high opening polyalcohol is 1% 5%；Polymerization inhibitor is the 10ppm of gross mass.Present invention introduces polyesterether polyols and low-molecular-weight alcohol, the advantages of having taken into account polyester and polyethers in modified MDI product structures obtained, the bearing capacity and mechanical mechanics property of cushion are significantly improved, method is simple.

Description

Cushion modified MDI and preparation method
Technical field
The present invention relates to a kind of cushion modified MDI and preparation method, belong to polyurethane synthesis field.
Background technology
Polyurethane foam is the current material ideal instead of natural leather and rubber, be mainly used in cushion, The fields such as furniture, athletic sports appliance and automobile.With the improvement of people's living standards, consumer is to cushion and mattress comfort level Requirement it is also higher and higher.Meanwhile be used for also proposed higher requirement in terms of service life and durability, particularly in automobile The time that performance service life will at least reach 10 years is required in terms of cushion and sofa fabric.In current techniques, pure polyester changes Property MDI because hydrolysis property it is bad, directly influenced its requirement in wet condition, and polyethers System Modification MDI is produced Although product anti-hydrolytic performance is preferable, there is very big deficiency in mechanical property again.So selection one kind is had excellent performance and comfortably The cushion spent is with modified MDI products also with regard to an urgent demand.
Patent CN01133533 reports a kind of polyurethane mat material, and by improving production technology, elasticity and bearing capacity are risen Certain effect is arrived, but raw material is convenient source used by the invention, only improves production technology without changing to raw material Into playing the role of very limited.
Patent CN104530378A reports a kind of modification MDI of the high-bearing capacity of polyester modification, is selected in formula design Terephthalic acid (TPA) is added, although its bearing capacity and certain comfort can be improved, due to the rigid base of benzene ring structure Group, it will largely effect on the elasticity and comfort of polyurethane foam.
The content of the invention
In view of the deficiencies of the prior art, the object of the present invention is to provide a kind of cushion with modified MDI, the poly- ammonia produced with it Ester foam cushion has excellent mechanical property and resilience performance；There is provided preparation method simultaneously.
The modified MDI of cushion of the present invention, by weight percentage, raw material composition is：
Polyester-ether polyol is using aromatic polyester polyol as the propylene oxide of initiator and/or being total to for ethylene oxide Polymers, hydroxyl value 50-100mgKOH/g.
The preparation method of polyester-ether polyol of the present invention is：By aromatic polyester polyol in catalyst action Polyester-ether polyol is made in lower and propylene oxide and/or reacting ethylene oxide.
Aromatic polyester polyol is poly- phthalic acid -1,6-HD esterdiol or poly- phthalic acid neopentyl glycol One or both of esterdiol.
Catalyst is one or both of dimethylamine or diethylamine.
As a kind of perferred technical scheme, the preparation method of polyester-ether polyol is：By weight percentage, by 40- 60% poly- phthalic acid -1,6- hexylene glycol esterdiol is added in 0.1%-1% amines catalysts dimethylamine in reaction kettle, is subtracted Pressure；The copolymer of 10-40% propylene oxide and 10-30% ethylene oxide is put into again, is to slowly warm up to 100 DEG C of -130 DEG C of kettle internal pressures Power 0.07-0.4MPa reacts 3-5h.Vacuumize, treat that temperature is down to less than 90 DEG C press filtrations discharging, detection hydroxyl value for 76 ± 2mgKOH/g, acid value≤1.5mgKOH/g, moisture≤0.05% obtain set value to get polyester-ether polyol.
Methyl diphenylene diisocyanate is MDI-100 (ten thousand China chemistry), MDI-50 (ten thousand China's chemistry), 44C (Bayer) or One or more in 0129M (Bayer).
Polymeric MDI is the one or more in PM200 (ten thousand China's chemistry), 44V20 (Bayer) or M20S (BASF).
The degree of functionality of low-molecular-weight alcohol is 2, number-average molecular weight 40-400, preferably KG-02 (commercially available), 1,4-butanediol One or more in (commercially available), ethylene glycol (commercially available) or DL-400 (Shandong blue star Dong great Co., Ltds).
High opening polyalcohol be glycerine be initiator, degree of functionality 3, ethylene oxide and propylene oxide ring-opening polymerisation and with Organic siloxane modified number-average molecular weight is the silicone-modified polyether polyol of 5000-6000；It is preferred that DK-12 (commercially available, mountains One or both of the big Co., Ltds of Dong Lanxingdong) or SD-75 (Shanghai Dong great Chemical Co., Ltd.s).
Polymerization inhibitor is one or both of phosphoric acid or chlorobenzoyl chloride.
The cushion of the present invention preparation method of modified MDI, includes the following steps：
The polyester-ether polyol of formula ratio, low-molecular-weight alcohol, high opening polyalcohol room temperature are added in into stirred tank, stirred, Rotating speed is 80-100r/min, is warming up to 100-110 DEG C, is evacuated to -0.095Mpa, dehydration degassing 2-3h；Detect moisture Less than 5/10000ths, 30-40 DEG C is cooled to, methyl diphenylene diisocyanate, polymeric MDI and polymerization inhibitor is added in, is warming up to 70- 85 DEG C, 2-3h is reacted, is down to room temperature, nitrogen-sealed barrelling.
In use, the modification MDI (B component) prepared by material component A and the present invention is combined using well known cushion, according to different The index of cyanic acid index 100 weighs, and the component A measured and B component are poured into plastic cup, is 3000r/ in agitator speed Min stirs 4-6s, pours into the mold of 400mm × 400mm × 10mm, 40-50 DEG C of mould temperature, and 48h, test machine are placed in 4min die sinkings Tool mechanical property.
Wherein, the component A is：The 330N that polyether polyol is 75% (divide equally by Shandong blue star Dong great Co., Ltds, number Son amount is 4500-7000, with the polypropylene oxide trihydroxylic alcohol of ethylene oxide-capped)；Polymer polyatomic alcohol is 15% H45 (mountains The big Co., Ltds of Dong Lanxingdong, solid content are higher than 30%, are formed with styrene or acrylonitrile graft copolymer)；Low-molecular-weight alcohol is 5% ethylene glycol (commercially available)；Tertiary amine catalyst is 1% triethylenediamine (commercially available)；Crosslinking agent is 2% diethanol amine (commercially available)；Foam stabiliser is 1% DC2525 (commercially available)；Foaming agent is 1% water.
Polyester-ether polyol has taken into account the advantages of polyester and polyether polyol, hence it is evident that improves the water-fast of polyurethane product The comprehensive performances such as Xie Xing, wearability, resilience and Mechanics of Machinery.
Compared with prior art, the present invention has the following advantages：
(1) polyester-ether polyol and low-molecular-weight alcohol are introduced, taken into account in modified MDI product structures obtained polyester and The advantages of polyethers, significantly improves the bearing capacity and mechanical mechanics property of cushion；
(2) modified MDI products made from improve the toughness and elasticity of foam wall, improve the comfort level of cushion；
(3) formula design has evaded existing security risk using without using noxious materials such as TDI；
(4) preparation method, it is simple for process, it is easy to operate.
Specific embodiment
With reference to embodiment, the present invention will be further described.
The preparation method of polyester-ether polyol described in following embodiment is：It is calculated in mass percent, 54.5% is gathered Phthalic acid -1,6- hexylene glycol esterdiol hexylene glycol and 0.5% dimethylamine are added in reaction kettle, decompression；30% ring is put into again The copolymer of Ethylene Oxide and 15% ethylene oxide is to slowly warm up to 120 DEG C, pressure 0.2MPa in kettle, reacts 5h.It vacuumizes, treats Temperature is down to 90 DEG C of press filtrations discharging, and detection hydroxyl value is 74mgKOH/g, acid value 0.8mgKOH/g, moisture are 0.03% to get poly- Ester-ethoxylated polyhydric alcohol.
Embodiment 1
The modified MDI of cushion of the present invention, raw material composition are：It is calculated in mass percent, 44C 35%, M20S For 40%, polyester-ether polyol 20%, KG-02 2%, SD-75 3%, the 10ppm that phosphoric acid is gross mass.
During preparation：Stirred tank will be added under the polyester-ether polyol of formula ratio, KG-02 and SD-75 room temperature, opens stirring, Rotating speed is 100r/min, is warming up at 105 DEG C and stirs, and is evacuated to less than -0.095Mpa, dehydration degassing 3h, detection moisture contains Amount is cooled to 40 DEG C, adds 44C, M20S and phosphoric acid less than 5/10000ths, is warming up to 85 DEG C, reacts 2h, after sampling Detection qualification, Cool to room temperature, nitrogen-sealed barrelling.
During use：The modification MDI (B component) of material component A and the present invention are combined using well known cushion, is referred to according to isocyanic acid The index of number 100 weighs, and the component A measured and B component is poured into plastic cup, agitator speed 3000r/min, stirs 4s is poured into the mold of 400mm × 400mm × 10mm, 40 DEG C of mould temperature, and 48h, test mechanical mechanical property are placed in 4min die sinkings. It the results are shown in Table 1.
Embodiment 2
The modified MDI of cushion of the present invention, raw material composition are：It is calculated in mass percent, MDI-50 50%, PM200 is 30%, polyester-ether polyol 15%, DL-400 3%, DK-12 2%, the 10ppm that phosphoric acid is gross mass.
During preparation：Stirred tank will be added under the polyester-ether polyol of formula ratio, DL-400 and DK-12 room temperature, unlatching is stirred It mixes, rotating speed 90r/min is warming up to 110 DEG C, is evacuated to less than -0.095Mpa, dehydration degassing 3h, detection moisture is less than 5/10000ths, 35 DEG C are cooled to, adds MDI-50, PM200 and phosphoric acid, is warming up to 80 DEG C, reacts 3h, after sampling Detection qualification, drop Temperature arrives room temperature, nitrogen-sealed barrelling.
During use：
The modification MDI (B component) of material component A and the present invention are combined using well known cushion, according to isocyanate index 100 Index weighs, and the component A measured and B component is poured into plastic cup, agitator speed 3000r/min, stirs 6s, pours into The mold of 400mm × 400mm × 10mm, mould temperature are 450C, and 48h, test mechanical mechanical property are placed in 4min die sinkings.The result is shown in Table 1.
Embodiment 3
The modified MDI of cushion of the present invention, raw material composition are：It is calculated in mass percent, MDI-100 37%, 44V20 is 32%, polyester-ether polyol 25%, 1,4- butanediols are 5%, DK-12 1%, chlorobenzoyl chloride are gross mass 10ppm。
During preparation：Stirred tank will be added under the polyester-ether polyol of formula ratio, KZ-14 and DK-12 room temperature, opens stirring, Rotating speed 80r/min is warming up at 110 DEG C, is evacuated to vacuum degree and is detected moisture less than -0.095Mpa, dehydration degassing 3h Less than 5/10000ths, 40 DEG C are cooled to, adds MDI-100,44v20 and chlorobenzoyl chloride, be warming up to 70 DEG C, react 3h, sampling Detection After qualification, room temperature, nitrogen-sealed barrelling are cooled to.
During use：The modification MDI (B component) of material component A and the present invention are combined using well known cushion, is referred to according to isocyanic acid The index of number 100 weighs, and the component A measured and B component is poured into plastic cup, agitator speed 3000r/min, stirs 5s pours into the mold of 400mm × 400mm × 10mm, and mould temperature is 50 DEG C, and 48h, test mechanical mechanical property are placed in 4min die sinkings. It the results are shown in Table 1.
Comparative example 1
The technical solution provided according to patent CN104530378A prepares modified MDI.
Embodiment 1-3 and the mechanical property result of comparative example test
As can be seen from the above table, properties of product made from the MDI that the modified MDI of the present invention is modified with comparison patent have greatly The raising of amplitude, density is lower, resilience is excellent, has broad application prospects in the production of Seating Products.

Claims (10)

1. a kind of modified MDI of cushion, it is characterised in that：By weight percentage, raw material composition is：
Polymerization inhibitor is the 10ppm of gross mass.
2. the modified MDI of cushion according to claim 1, it is characterised in that：Polyester-ether polyol is with aromatic polyester Polyalcohol for initiator propylene oxide and/or ethylene oxide copolymer, hydroxyl value 50-100mgKOH/g.
3. the modified MDI of cushion according to claim 2, it is characterised in that：The preparation method of polyester-ether polyol is： It is polynary that polyester-ether is made with propylene oxide and/or reacting ethylene oxide under catalyst action in aromatic polyester polyol Alcohol.
4. the modified MDI of cushion according to claim 3, it is characterised in that：Aromatic polyester polyol is poly- adjacent benzene two One or both of formic acid -1,6-HD esterdiol or poly- phthalic acid neopentyl glycol esterdiol；Catalyst is diformazan One or both of amine or diethylamine.
5. the modified MDI of cushion according to claim 1, it is characterised in that：Methyl diphenylene diisocyanate is MDI- 100th, the one or more in MDI-50,44C or 0129M.
6. the modified MDI of cushion according to claim 1, it is characterised in that：Polymeric MDI is PM200,44V20 or M20S In one or more.
7. the modified MDI of cushion according to claim 1, it is characterised in that：The degree of functionality of low-molecular-weight alcohol is 2, and number is equal Molecular weight is 40-400.
8. the modified MDI of cushion according to claim 1, it is characterised in that：High opening polyalcohol originates for glycerine Agent, degree of functionality 3, ethylene oxide and propylene oxide ring-opening polymerisation and using organic siloxane modified number-average molecular weight as 5000- 6000 silicone-modified polyether polyol.
9. the modified MDI of cushion according to claim 1, it is characterised in that：Polymerization inhibitor is in phosphoric acid or chlorobenzoyl chloride It is one or two kinds of.
10. a kind of preparation method of the modified MDI of any cushions of claim 1-9, it is characterised in that：Including walking as follows Suddenly：It will be added under the polyester-ether polyol of formula ratio, low-molecular-weight alcohol, high opening polyalcohol room temperature in stirred tank, stirring, Rotating speed is 80-100r/min, is warming up to 100-110 DEG C, is evacuated to -0.095Mpa, dehydration degassing 2-3h；Detect moisture Less than 5/10000ths, 30-40 DEG C is cooled to, methyl diphenylene diisocyanate, polymeric MDI and polymerization inhibitor is added in, is warming up to 70- 85 DEG C, 2-3h is reacted, is down to room temperature, nitrogen-sealed barrelling.
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