CN104788641B - A kind of polyether polyols capable of being fast degraded and its preparation method and application - Google Patents
A kind of polyether polyols capable of being fast degraded and its preparation method and application Download PDFInfo
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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
- C08G18/65—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
- C08G18/6603—Compounds of groups C08G18/42, C08G18/48, or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6607—Compounds 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
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- C07C67/10—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides with ester groups or with a carbon-halogen bond
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- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
- C07C69/66—Esters of carboxylic acids having esterified carboxylic groups bound to acyclic carbon atoms and having any of the groups OH, O—metal, —CHO, keto, ether, acyloxy, groups, groups, or in the acid moiety
- C07C69/67—Esters of carboxylic acids having esterified carboxylic groups bound to acyclic carbon atoms and having any of the groups OH, O—metal, —CHO, keto, ether, acyloxy, groups, groups, or in the acid moiety of saturated acids
- C07C69/708—Ethers
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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
- C08G18/3221—Polyhydroxy compounds hydroxylated esters of carboxylic acids other than higher fatty acids
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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
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4236—Polycondensates having carboxylic or carbonic ester groups in the main chain containing only aliphatic groups
- C08G18/4238—Polycondensates having carboxylic or carbonic ester groups in the main chain containing only aliphatic groups derived from dicarboxylic acids and dialcohols
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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
- C08G18/65—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
- C08G18/6633—Compounds of group C08G18/42
- C08G18/6637—Compounds of group C08G18/42 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/664—Compounds of group C08G18/42 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
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- C08G2230/00—Compositions for preparing biodegradable polymers
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- C08G2310/00—Agricultural use or equipment
Abstract
The present invention relates to the technical field of modified polymer material, more particularly to a kind of polyether polyols capable of being fast degraded and its preparation method and application.The polyether polyols of the present invention, including hard section and soft segment, the hard section contain class hydroxyacetic acid ester structure.Compared with prior art, polyether polyols of the invention introduce degradable class hydroxyacetic acid ester structure in segmented polyurethane, and this structure is easy to degrade under natural environment；And the polymer has good mechanical property and processing characteristics, can be widely used in the fields such as packaging for foodstuff, mulch film, synthetic leather, footwear material.
Description
The application is divisional application, and the applying date of its female case is December 6, Application No. in 2013
201310658729.3rd, invention and created name for " a kind of polyether polyols capable of being fast degraded and preparation method thereof and should
With ".
Technical field
The present invention relates to the technical field of modified polymer material, more particularly to a kind of polyurethane polymerization capable of being fast degraded
Thing and its preparation method and application.
Background technology
Polyurethane full name is polyurethanes, is the macromolecular chemical combination containing the carbamate groups repeated on main chain
The general designation of thing, it mainly reacts what is prepared by the compound of polyisocyanates and active hydrogen.Select different number functional groups
With different types of group, using different synthesis techniques, the various polyurethane productions of different properties, apparent form can be prepared
Product.From sufficiently flexible to extremely hard foamed plastics, there is the elastomer that anti-wear performance is excellent, have high resilience synthetic fibers,
Synthetic leather of warp resistance function admirable etc., gradually form numerous in variety, different properties a novel synthetic material series.With
The continuous expansion of products application, this kind of polymer turns into from aviation aircraft to industrial and agricultural production, from style instrumental music to people
Material essential in the every field such as daily clothing, food, shelter, row.
At present, the yield of polyurethane and sale still keep strong growth, particularly polyurethane mulch film, medical grade TPU pipe,
Application in terms of chemical fibre, packaging, PU leather, makes its market further expand.But Methods for Polyurethane Wastes is difficult nature in nature
Degraded, huge pressure will be brought to environment for this substantial amounts of discarded object.
To the new problem for being effectively treated as facing mankind of polyurethane.At present, returning for a variety of polyurethane has been developed
Receipts technology.Research is found：Largely the PU materials containing C-C keys burn under certain condition, can produce a large amount of heat energy.But reclaiming
While heat energy, it is often accompanied by the environmentally harmful gas such as CO, CO2, nitrogen oxide, hydrogen chloride and produces, cause secondary pollution, because
This, it is a kind of helpless transition method that PU waste materials, which are carried out burning recovery heat energy,.
Simply discarded polyurethane is after purified treatment, then with melt-processed into the slightly lower product of quality.Top grade is poly-
Urethane is small molecule polyol by chemical alcoholysis, and these catabolites can be as the former material of adhesive or production polyurethane
Material.Chemical degradation needs to consume substantial amounts of polyalcohol, and degradation temperature is high, and equipment loss is big.Methods for Polyurethane Wastes is in long-term use
During, easy Partial digestion, turn yellow, containing a large amount of antioxidant, the alcoholysis product of these Methods for Polyurethane Wastes does not have exploitation value
Value.In addition, applying on the disposable products such as packaging for foodstuff, mulch film, recovery difficult is very big, and cost recovery is too high or reclaims valency
Value is too small to be also unworthy recycling.
Therefore, polyurethane capable of being fast degraded is designed from structure, its discarded object is dropped faster in natural environment
Solve as small molecule product, this is highly beneficial to polyurethane long term growth.In theory, on polyurethane molecular segment ester linkage hydrolyzing work
Property be identical, either in the end of the chain, or middle-of-chain part, whether hydrolysis occurs depending on hydrone is close to ester bond
Complexity.Influenceing the chemical factor of these complexities includes the composition of hydrophily, morphosis, molecular weight and high polymer
Deng.Hydrolysis medium is more much easier than crystal region into amorphous domain, and the fracture of ester bond first occurs at amorphous domain,
Followed by crystal region.Therefore, crystallinity is to influence a key factor of hydrolysis rate, and crystallinity is higher, the water of polyester
Solving speed will be slower.
The content of the invention
Present invention aims at a kind of polyether polyols capable of being fast degraded are provided, to solve polyurethane in the prior art
Cost high technical matters polymer can cause secondary pollution or be degraded by chemical alcoholysis when passing through combustion degradation when.
Another object of the present invention is to provide the preparation method of above-mentioned polyether polyols capable of being fast degraded, to solve
Cost is high when secondary pollution can be caused when polyether polyols pass through combustion degradation in the prior art or being degraded by chemical alcoholysis
Technical matters.
It is still another object of the present invention to provide the application of above-mentioned polyether polyols capable of being fast degraded.
The object of the invention is realized by following technical scheme：
A kind of polyether polyols capable of being fast degraded, including hard section and soft segment, the hard section contain class glycolic acid esters
Structure.
Preferably, the class hydroxyacetic acid ester structure includes compound (I), the one of which of (II) or two kinds：
Wherein, R1For the third two supports, fourth two is supportted, penta 2 supports, oneself two supports, heptan two is supportted, pungent two support or certain herbaceous plants with big flowers two are supportted；R', R " are respectively
For the one of which of hydrogen, hydroxyalkyl or aminoalkyl；R2Supportted for second two, the third two supports, fourth two supports, a contracting second two supports, new penta 2 support,
Oneself two support or the methylene of 1,4- hexamethylenes two；R " ', R " " is respectively the one of which of hydrogen, hydroxyalkyl or aminoalkyl.
The preparation method of above-mentioned polyether polyols capable of being fast degraded, comprises the following steps：
By organic isocyanate and polymerization generation polyether polyols, the polyalcohol includes degradable polyol
With non-degradable polyalcohol.
Preferably, the organic isocyanate is selected from hexa-methylene isocyanates, 4, (the cyclohexyl isocyanide of 4 '-methylene-two
Acid esters), isophorone diisocyanate, Toluene-2,4-diisocyanate, 4- diisocyanate, 4,4 '-methylene-two (phenyl isocyanate) is wherein
It is one or more of.
Preferably, the non-degradable polyalcohol is selected from polybutylene glyool adipate, polyethylene glycol adipate two
Alcohol, polydiethylene glycol adipate polyalcohol, polyadipate diethylene glycol butyl glycol ester diol, polyadipate ethylene glycol diethyl two
Alcohol esterdiol, polyadipate ethylene glycol butyl glycol ester diol, polycaprolactone glycol, the one of which or several of PCDL
Kind.
Preferably, the degradable polyol is selected from compound (I), the one of which of (II) or two kinds：
Wherein, R1For the third two supports, fourth two is supportted, penta 2 supports, oneself two supports, heptan two is supportted, pungent two support or certain herbaceous plants with big flowers two are supportted；R', R " are respectively
For the one of which of hydrogen, hydroxyalkyl or aminoalkyl；R2Supportted for second two, the third two supports, fourth two supports, a contracting second two supports, new penta 2 support,
Oneself two support or the methylene of 1,4- hexamethylenes two；R " ', R " " is respectively the one of which of hydrogen, hydroxyalkyl or aminoalkyl.
Preferably, the preparation method of the compound (I) comprises the following steps：
Carboxylic acid reacts in alkaline environment with monobromo-acetic acid ester and prepares intermediate product, and the intermediate product enters with ethylene glycol again
Compound (I) is made in row ester exchange.It is one of which reaction equation below.
Wherein, R1For the third two supports, fourth two is supportted, penta 2 supports, oneself two supports, heptan two is supportted, pungent two support or certain herbaceous plants with big flowers two are supportted；R3For methyl or
Ethyl.
Preferably, the preparation method of the compound (II) comprises the following steps：
Small molecule polyol makes Lanthanum Isopropoxide open loop that compound (II) be made with Lanthanum Isopropoxide reaction, reacts
Journey such as following formula.
Wherein, R2Supportted for second two, the third two supports, fourth two supports, a contracting second two supports, new penta 2 support, oneself two supports or 1,4- hexamethylenes two
Methylene.
Above-mentioned polyether polyols capable of being fast degraded answering in terms of mulch film, packaging for foodstuff, footwear material, synthetic leather is prepared
With.
Compared with prior art, the present invention has following beneficial effect：
1st, polyether polyols of the invention introduce degradable class hydroxyacetic acid ester structure in segmented polyurethane, this
Structure is easy to degrade under natural environment, will not produce secondary pollution, and cost of degrading is low；And the polymer have it is good
Good mechanical property and processing characteristics, can be widely used in the fields such as packaging for foodstuff, mulch film, synthetic leather, footwear material；
2nd, between 200-350, these polyalcohols can introduce the molecular weight of degradable polyol after being reacted with isocyanates
Into the hard section of polyurethane, the crystal property of material in itself, the opposing party's noodles glycolic acid esters structure itself are on the one hand destroyed
With good degradation property so that polyether polyols have extraordinary degradation property；
3rd, polyether polyols of the invention can be capable of being fast degraded in weakly alkaline environment, can effectively solve polyurethane application
Caused pollution problem；
4th, the preparation method of polyether polyols of the invention is simple, and process equipment requires low, and valency is used with extremely strong
Value and popularizing application prospect.
Embodiment
With reference to embodiments, the present invention is described in detail.
Raw material and specification required for following examples is as shown in table 1：
Table 1
| Title | Specification | Source |
| 4,4- methylene-two (phenyl isocyanate) | Technical grade | Yantai Wanhua |
| Hexa-methylene isocyanates | Technical grade | Bayer |
| Isophorone diisocyanate | Technical grade | Bayer |
| Polybutylene glyool adipate | Technical grade | Magnificent peak new material |
| Polyethylene glycol adipate glycol | Technical grade | Magnificent peak new material |
| Ethylene glycol | Technical grade | Magnificent peak new material |
| Butanediol | Technical grade | Magnificent peak new material |
| Neopentyl glycol | Technical grade | Magnificent peak new material |
| Succinic acid | Technical grade | Magnificent peak new material |
| Methyl bromoacetate | Analyze pure | Traditional Chinese medicines reagent |
| Lanthanum Isopropoxide | Analyze pure | Jiaxing City is lucky to draw specialization work |
| Zinc lactate | Analyze pure | Aladdin |
First, the synthesis of degradable polyol
Embodiment 1
By in 11.8g (0.1mol) succinic acid and 5.3g (0.05mol) sodium carbonate input 100ml acetonitrile solutions；To system
Middle addition 36.7g (0.24mol) methyl bromoacetate；It is added dropwise and reacts 2h at 30 DEG C, removes solvent, filtering, by filter residue and drying,
Washing removes the salt on surface, you can.
The compound 6.55g (0.025mol) of above-mentioned acquisition is added in 6.2g (0.1mol) ethylene glycol solution, to above-mentioned
0.02g antimony glycols are added in solution, nitrogen protection, 80 DEG C is warming up to and reacts 6 hours.Last oil pump, which vacuumizes, removes excessive second
Glycol, it is 174.1 to survey hydroxyl value index, you can obtains the polyalcohol DR-1 that degrades.DR-1 structural formula is：
Embodiment 2
21.44g (0.21mol) Lanthanum Isopropoxide is dissolved in 100ml acetonitrile solutions, 6.2g is added to solution
(0.10mol) ethylene glycol, 0.064g zinc lactates are added, 30min is stirred at room temperature, be heated to 60 DEG C of reactions 24h, Ran Hou
Solvent and the Lanthanum Isopropoxide of excess are removed in vacuum under 3mmHg, it is 210.7 to survey hydroxyl value index, you can obtains described drop
Solve segment DR-2.DR-2 structural formula is：
Embodiment 3
21.44g (0.21) Lanthanum Isopropoxide is dissolved in 100ml acetonitrile solutions, 10.4g (0.1mol) is added to solution
Neopentyl glycol, 0.055g zinc lactates are added, 30min is stirred at room temperature, be heated to 60 DEG C of reaction 24h, it is then true under 3mmHg
Sky removes solvent and the dioxanone of excess, and it is 182.0 to survey hydroxyl value index, can obtain DR-3.DR-3 structural formula is：
Embodiment 4
21.44g (0.21) Lanthanum Isopropoxide is dissolved in 100ml acetonitrile solutions, 10.4g (0.1mol) is added to solution
Diethylene glycol, 0.055g zinc lactates are added, 30min is stirred at room temperature, 60 DEG C of reaction 24h are heated to, then under 3mmHg
Solvent and the dioxanone of excess is removed in vacuum, it is 180.9 to survey hydroxyl value index, can obtain DR-4.DR-4 structural formula is：
2nd, the preparation of polyether polyols capable of being fast degraded
Embodiment 5
Polybutylene glyool adipate, butanediol, DR-1, isooctyl acid bismuth weigh respectively 583.3g, 78.9g, 75.2g,
0.0737 in tetrafluoro beaker, is mixed and heated to 100 DEG C, then adds 4,4- methylene-two (phenyl isocyanate) 350g, stirs
10min is mixed, now cementitious mixtures are poured on tetrafluoro pallet, is solidified 12 hours at 100 DEG C.It is polymers obtained transparent, rich
It is flexible.Obtained polymer is molded into 6mm and 1mm samples at 150 degrees Celsius, tested for extension test and degraded, is surveyed
Test result is shown in Table 2.
Embodiment 6
Polybutylene glyool adipate, butanediol, DR-2, isooctyl acid bismuth weigh respectively 600.0g, 81.1g, 53.3g,
0.0742g is mixed and heated to 100 DEG C in tetrafluoro beaker, then adds 4,4- methylene-two (phenyl isocyanate) 350g,
10min is stirred, now cementitious mixtures are poured on tetrafluoro pallet, is solidified 12 hours at 100 DEG C.It is polymers obtained it is transparent,
High resilience.Obtained polymer is molded into 6mm and 1mm samples at 150 degrees Celsius, tested for extension test and degraded,
Test result is shown in Table 2.
Embodiment 7
Polyethylene glycol adipate glycol, butanediol, DR-3, isooctyl acid bismuth weigh respectively 612.5g, 82.8g, 53.9g,
0.0747g is mixed and heated to 100 DEG C in tetrafluoro beaker, then adds 4,4- methylene-two (phenyl isocyanate) 350g,
10min is stirred, now cementitious mixtures are poured on tetrafluoro pallet, is solidified 12 hours at 100 DEG C.It is polymers obtained it is transparent,
High resilience.Obtained polymer is molded into 6mm and 1mm samples at 150 degrees Celsius, tested for extension test and degraded,
Test result is shown in Table 2.
Embodiment 8
Polyethylene glycol adipate glycol, butanediol, DR-4, isooctyl acid bismuth weigh respectively 622.2g, 84.1g, 48.2g,
0.0750g is mixed and heated to 100 DEG C in tetrafluoro beaker, then adds 4,4- methylene-two (phenyl isocyanate) 350g,
10min is stirred, now cementitious mixtures are poured on tetrafluoro pallet, is solidified 12 hours at 100 DEG C.It is polymers obtained it is transparent,
High resilience.Obtained polymer is molded into 6mm and 1mm samples at 150 degrees Celsius, tested for extension test and degraded,
Test result is shown in Table 2.
Embodiment 9
Polybutylene glyool adipate, butanediol, DR-1, isooctyl acid bismuth weigh respectively 630.0g, 85.2g, 45.1g,
0.0753g is mixed and heated to 100 DEG C in tetrafluoro beaker, then adds six methylene based isocyanates 185.6, isophorones
Isocyanates 113.5g, 10min is stirred, now cementitious mixtures are poured on tetrafluoro pallet, solidified 12 hours at 100 DEG C.Institute
Obtain polymeric transparent, high resilience.Obtained polymer is molded into 6mm and 1mm samples at 150 degrees Celsius, for stretching
Test and degraded test, test result are shown in Table 2.
Embodiment 10
Polybutylene glyool adipate, butanediol, isooctyl acid bismuth weigh 700g, 94.6g, 0.0776g in tetrafluoro respectively
In beaker, 100 DEG C are mixed and heated to, then adds polyethylene glycol adipate glycol 350g, 10min is stirred, now by viscosity
Mixture is poured on tetrafluoro pallet, is solidified 12 hours at 100 DEG C.Polymers obtained transparent, high resilience.The polymerization that will be obtained
Thing is molded into 6mm and 1mm samples at 150 degrees Celsius, is tested for extension test and degraded, and test result is shown in Table 2.
The extension test of polyether polyols prepared by above-described embodiment and the result of degraded test are as shown in table 2：
Table 2
| Embodiment is numbered | Modulus of elasticity | Tensile strength | Weightless ratio after degradation treatment |
| Embodiment 5 | 566 | 29.6 | 100 |
| Embodiment 6 | 542 | 31.1 | 100 |
| Embodiment 7 | 539 | 32.3 | 99.4 |
| Embodiment 8 | 537 | 32.8 | 99.1 |
| Embodiment 9 | 534 | 33.2 | 99.2 |
| Embodiment 10 | 530 | 35.3 | 10.1 |
Note：
Mechanics Performance Testing：Testing standard according to GB/T 528-2009 measures the polyurethane polymerization prepared by embodiment
Thing tensile strength and modulus of elasticity.
Degradation property is tested：Polyurethane polymer prepared by testing example 100 DEG C, 5% sodium hydroxide it is water-soluble
Percent weight loss after liquid stirring 30min.
As seen from the above table：The polyether polyols of the present invention have good mechanical property, the energy in weakly alkaline environment
It is capable of being fast degraded, can effectively solve pollution problem caused by polyurethane application.In addition, the preparation of the polyether polyols of the present invention
Method is simple, and process equipment requires low, has extremely strong use value and popularizing application prospect.
The polyether polyols capable of being fast degraded of the present invention can prepare the side such as mulch film, packaging for foodstuff, footwear material, synthetic leather
Apply in face.
Between 200-350, these polyalcohols can be incorporated into the molecular weight of degradable polyol after being reacted with isocyanates
In the hard section of polyurethane, the crystal property of material in itself, the opposing party's noodles glycolic acid esters structure itself tool are on the one hand destroyed
There is good degradation property so that polyether polyols have extraordinary degradation property.
Disclosed above is only several specific embodiments of the application, but the application is not limited to this, any this area
Technical staff can think change, should all fall in the protection domain of the application.
Claims (7)
1. a kind of polyether polyols capable of being fast degraded, including hard section and soft segment containing class hydroxyacetic acid ester structure, it is special
Sign is that the class hydroxyacetic acid ester structure is such as shown in (II)：
Wherein, R2Supportted for second two, the third two supports, fourth two supports, a contracting second two supports, new penta 2 support, oneself two supports or the methylene of 1,4- hexamethylenes two；
R " ', R " " is respectively the one of which of hydrogen, hydroxyalkyl or aminoalkyl.
2. the preparation method of the polyether polyols capable of being fast degraded described in claim 1, it is characterised in that including following step
Suddenly：
By organic isocyanate and polymerization generation polyether polyols, the polyalcohol is including degradable polyol and not
Degradable polyol.
3. the preparation method of polyether polyols capable of being fast degraded as claimed in claim 2, it is characterised in that described organic
Isocyanates be selected from hexa-methylene isocyanates, 4,4 '-methylene-two (cyclohexyl isocyanate), isophorone diisocyanate,
Toluene-2,4-diisocyanate, 4- diisocyanate, 4, the one of which or several of 4 '-methylene-two (phenyl isocyanate).
4. the preparation method of polyether polyols capable of being fast degraded as claimed in claim 2, it is characterised in that it is described can not
It is more that polyalcohol of degrading is selected from polybutylene glyool adipate, polyethylene glycol adipate glycol, polydiethylene glycol adipate
First alcohol, polyadipate diethylene glycol butyl glycol ester diol, polyadipate ethylene glycol diethylene glycol esterdiol, polyadipate ethylene glycol
Butyl glycol ester diol, polycaprolactone glycol, the one of which or several of PCDL.
5. the preparation method of polyether polyols capable of being fast degraded as claimed in claim 2, it is characterised in that described to drop
Polyalcohol is solved such as shown in (II)：
Wherein, R2Supportted for second two, the third two supports, fourth two supports, a contracting second two supports, new penta 2 support, oneself two supports or the methylene of 1,4- hexamethylenes two；
R " ', R " " is respectively the one of which of hydrogen or hydroxyalkyl.
6. the preparation method of polyether polyols capable of being fast degraded as claimed in claim 5, it is characterised in that the chemical combination
The preparation method of thing (II) comprises the following steps：
Small molecule polyol makes Lanthanum Isopropoxide open loop that compound (II) be made with Lanthanum Isopropoxide reaction.
7. the polyether polyols capable of being fast degraded described in claim 1 are preparing mulch film, packaging for foodstuff, footwear material, synthetic leather
The application of aspect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510246399.6A CN104788641B (en) | 2013-12-06 | 2013-12-06 | A kind of polyether polyols capable of being fast degraded and its preparation method and application |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510246399.6A CN104788641B (en) | 2013-12-06 | 2013-12-06 | A kind of polyether polyols capable of being fast degraded and its preparation method and application |
| CN201310658729.3A CN103665307B (en) | 2013-12-06 | 2013-12-06 | A kind of polyether polyols with reduced unsaturation capable of being fast degraded and its preparation method and application |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
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| CN101397361A (en) * | 2008-11-03 | 2009-04-01 | 重庆大学 | Multi-block polyurethane shape memory high molecule material and preparation method thereof |
| CN101817915A (en) * | 2010-04-01 | 2010-09-01 | 四川大学 | Poly (p-dioxanone)/polytetrahydrofuran multi-block copolyether ester with shape memory function and preparation method thereof |
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