CN107488433A - Modified polyurethane binding agent and preparation method thereof - Google Patents
Modified polyurethane binding agent and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
- C09J175/08—Polyurethanes from polyethers
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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
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
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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
- C08G18/28—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
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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
- C08G18/28—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
- C08G18/6692—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/34
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/222—Magnesia, i.e. magnesium oxide
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- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- 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
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
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- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Inorganic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a kind of modified polyurethane binding agent and preparation method thereof, wherein, the preparation method includes：1) tetraethyl orthosilicate, glacial acetic acid, nano magnesia, absolute ethyl alcohol and the first water are mixed, the first mixed liquor is made；2) butyl titanate, glacial acetic acid, nano magnesia, absolute ethyl alcohol and the second water are mixed, the second mixed liquor is made；3) neopentyl glycol under agitation, is added into the first mixed liquor, the second mixed liquor is then added dropwise thereto again, obtains mixed solution, then stands above-mentioned mixed solution, forms gel；4) it will be calcined after above-mentioned gel drying, particulate be made；5) after mixing particulate obtained above, diisocyanate and PPG, it is placed under conditions of temperature is 90 120 DEG C and places 3 6h, mixture M 1 is made；6) by mixture M 1 obtained above, chain extender and curing agent mixing and emulsifying, modified polyurethane binding agent is made.Realizing reduces the effect of fracture rate.
Description
Technical field
The present invention relates to polyurethane adhesive Material Field, in particular it relates to modified polyurethane binding agent and its preparation side
Method.
Background technology
Polyurethane adhesive is with its good performance and is widely widely applied using field.And in reality
During use, often it is often because its tensile strength etc. causes its use range by certain limitation so that in reality
Phenomena such as easily being influenceed to cause cracking by external force during the use of border.
There is preferable tensile strength therefore it provides a kind of so that its modified polyurethane binding agent not easy to crack and its
The problem of preparation method is urgent need to resolve of the present invention.
The content of the invention
For above-mentioned prior art, it is an object of the invention to overcome in the prior art polyurethane adhesive often because of it
Tensile strength etc. causes its use range by certain limitation so that easily is influenceed to cause by external force in actual use
The problem of phenomena such as cracking, there is preferable tensile strength so as to provide one kind so that its modified polyurethane not easy to crack glues
Tie agent and preparation method thereof.
To achieve these goals, the invention provides a kind of preparation method of modified polyurethane binding agent, wherein, it is described
Preparation method includes：
1) tetraethyl orthosilicate, glacial acetic acid, nano magnesia, absolute ethyl alcohol and the first water are mixed, the first mixed liquor is made；
2) butyl titanate, glacial acetic acid, nano magnesia, absolute ethyl alcohol and the second water are mixed, the second mixed liquor is made；
3) neopentyl glycol under agitation, is added into the first mixed liquor, the second mixed liquor is then added dropwise thereto again,
Mixed solution is obtained, then stands above-mentioned mixed solution, forms gel；
4) it will be calcined after above-mentioned gel drying, particulate be made；
5) after mixing particulate obtained above, diisocyanate and PPG, it is 90-120 DEG C to be placed in temperature
Under the conditions of place 3-6h, be made mixture M 1；
6) by mixture M 1 obtained above, chain extender and curing agent mixing and emulsifying, modified polyurethane binding agent is made.
Present invention also offers a kind of modified polyurethane binding agent according to made from preparation method described above.
Pass through above-mentioned technical proposal, it is of the invention by tetraethyl orthosilicate, glacial acetic acid, nano magnesia, absolute ethyl alcohol and first
Water is mixed, and obtains the first mixed liquor, then butyl titanate, glacial acetic acid, nano magnesia, absolute ethyl alcohol and the second water are mixed,
The second mixed liquor is obtained, and neopentyl glycol is added in backward first mixed liquor, then the second mixed liquor is added dropwise, gel is formed, will roast
Particulate, diisocyanate and the PPG mixing of gel-forming after burning, add chain extender and curing agent mixing and emulsifying,
So that obtained polyurethane adhesive has good tensile strength through the above way, its cracking is substantially reduced.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Embodiment
The embodiment of the present invention is described in detail below.It is it should be appreciated that described herein specific
Embodiment is merely to illustrate and explain the present invention, and is not intended to limit the invention.
The end points of disclosed scope and any value are not limited to the accurate scope or value herein, these scopes or
Value should be understood to comprising the value close to these scopes or value.For number range, between the endpoint value of each scope, respectively
It can be combined with each other between the endpoint value of individual scope and single point value, and individually between point value and obtain one or more
New number range, these number ranges should be considered as specific open herein.
The invention provides a kind of preparation method of modified polyurethane binding agent, wherein, the preparation method includes：
1) tetraethyl orthosilicate, glacial acetic acid, nano magnesia, absolute ethyl alcohol and the first water are mixed, the first mixed liquor is made；
2) butyl titanate, glacial acetic acid, nano magnesia, absolute ethyl alcohol and the second water are mixed, the second mixed liquor is made；
3) neopentyl glycol under agitation, is added into the first mixed liquor, the second mixed liquor is then added dropwise thereto again,
Mixed solution is obtained, then stands above-mentioned mixed solution, forms gel；
4) it will be calcined after above-mentioned gel drying, particulate be made；
5) after mixing particulate obtained above, diisocyanate and PPG, it is 90-120 DEG C to be placed in temperature
Under the conditions of place 3-6h, be made mixture M 1；
6) by mixture M 1 obtained above, chain extender and curing agent mixing and emulsifying, modified polyurethane binding agent is made.
The present invention mixes tetraethyl orthosilicate, glacial acetic acid, nano magnesia, absolute ethyl alcohol and the first water, and it is mixed to obtain first
Liquid is closed, then butyl titanate, glacial acetic acid, nano magnesia, absolute ethyl alcohol and the second water are mixed, obtains the second mixed liquor, and
Neopentyl glycol is added in backward first mixed liquor, then the second mixed liquor is added dropwise, gel is formed, by the micro- of the gel-forming after roasting
Grain, diisocyanate and PPG mixing, add chain extender and curing agent mixing and emulsifying, so that passing through above-mentioned side
Polyurethane adhesive made from formula has good tensile strength, substantially reduces its cracking.
In a kind of preferred embodiment provided by the invention, in step 1), relative to the positive silicon of 10 parts by weight
Acetoacetic ester, the dosage of the glacial acetic acid are 80-120 parts by weight, and the dosage of the nano magnesia is 5-10 parts by weight, the nothing
The dosage of water-ethanol is 15-30 parts by weight, and the dosage of first water is 20-50 parts by weight.
In further preferred embodiment, in step 2), relative to the butyl titanate of 10 parts by weight, the ice
The dosage of acetic acid is 20-30 parts by weight, and the dosage of the nano magnesia is 2-8 parts by weight, and the dosage of the absolute ethyl alcohol is
10-30 parts by weight, the dosage of second water is 10-30 parts by weight.
In another preferred embodiment of the present invention, in step 3), first mixed liquor：The neopentyl glycol：
The amount ratio of second mixed liquor is 1 parts by weight：0.1-0.2 parts by weight：0.8-1.5 parts by weight；Stir speed (S.S.) is 300-
800r/min。
In the embodiment being more highly preferred to, drop rate is 100-200 drops/min in step 3).
In a kind of preferred embodiment of the present invention, drying temperature is 80-100 DEG C in step 4), and drying time is
1-2h；Sintering temperature is 450-500 DEG C, roasting time 1-3h.
Certainly, also include being ground dried solid in a kind of preferred embodiment, after drying in step 4)
It is calcined again afterwards.
In another preferred embodiment of the present invention, the diisocyanate is selected from IPDI
And/or hexamethylene diisocyanate；The PPG is selected from polyether Glycols；It is further preferred that the polyethers binary
The number-average molecular weight of alcohol is 800-1200.
It is described micro- relative to the PPG of 100 parts by weight in step 5) in the embodiment being more highly preferred to
The dosage of grain is 5-20 parts by weight, and the dosage of the diisocyanate is 10-50 parts by weight.
In another preferred embodiment of the present invention, in step 6), relative to the mixture of 100 parts by weight
M1, the dosage of the chain extender is 1-5 parts by weight, and the dosage of the curing agent is 1-5 parts by weight；It is it is further preferred that described
Chain extender is selected from 2,2'- dihydromethyl propionic acids and/or cumyl peroxide.
Present invention also offers a kind of modified polyurethane binding agent according to made from preparation method described above.
The present invention will be described in detail by way of examples below.
Embodiment 1
1) by the tetraethyl orthosilicate of 10 parts by weight, the glacial acetic acid of 80 parts by weight, the nano magnesia of 5 parts by weight, 15 weight
The absolute ethyl alcohol of part and the water mixing of 20 parts by weight, are made the first mixed liquor；
2) by the butyl titanate of 10 parts by weight, the glacial acetic acid of 20 parts by weight, the nano magnesia of 2 parts by weight, 10 weight
The absolute ethyl alcohol of part and the water mixing of 10 parts by weight, are made the second mixed liquor；
3) in the case where stir speed (S.S.) is 300r/min stirring condition, 0.1 weight is added into the first mixed liquor of 1 parts by weight
The neopentyl glycol of part, the second mixed liquor of 0.8 parts by weight is then added dropwise with 100 drops/min drop rate thereto again, obtains
Mixed solution, then above-mentioned mixed solution is stood, form gel；
4) above-mentioned gel is placed under conditions of drying temperature is 80 DEG C after drying 1h and ground, then be placed in sintering temperature and be
Roasting 1h is carried out under conditions of 450 DEG C, particulate is made；
5) by the particulate obtained above of 5 parts by weight, 10 parts by weight IPDI diisocyanate and
After the polyether Glycols mixing of 100 parts by weight, it is placed under conditions of temperature is 90 DEG C and places 3h, mixture M 1 is made；
6) mixture M obtained above 1 of 100 parts by weight, 1 parts by weight 2,2'- dihydromethyl propionic acids and 1 parts by weight are consolidated
Agent mixing and emulsifying, modified polyurethane binding agent A1 is made.
Embodiment 2
1) by the tetraethyl orthosilicate of 10 parts by weight, the glacial acetic acid of 120 parts by weight, the nano magnesia of 10 parts by weight, 30 weights
The absolute ethyl alcohol of part and the water mixing of 50 parts by weight are measured, the first mixed liquor is made；
2) by the butyl titanate of 10 parts by weight, the glacial acetic acid of 30 parts by weight, the nano magnesia of 8 parts by weight, 30 weight
The absolute ethyl alcohol of part and the water mixing of 30 parts by weight, are made the second mixed liquor；
3) in the case where stir speed (S.S.) is 800r/min stirring condition, 0.2 weight is added into the first mixed liquor of 1 parts by weight
The neopentyl glycol of part, the second mixed liquor of 1.5 parts by weight is then added dropwise with 200 drops/min drop rate thereto again, obtains
Mixed solution, then above-mentioned mixed solution is stood, form gel；
4) above-mentioned gel is placed under conditions of drying temperature is 100 DEG C after drying 2h and ground, then be placed in sintering temperature and be
Roasting 3h is carried out under conditions of 500 DEG C, particulate is made；
5) by the particulate obtained above of 20 parts by weight, 50 parts by weight IPDI diisocyanate and
After the polyether Glycols mixing of 100 parts by weight, it is placed under conditions of temperature is 120 DEG C and places 6h, mixture M 1 is made；
6) mixture M obtained above 1 of 100 parts by weight, 5 parts by weight 2,2'- dihydromethyl propionic acids and 5 parts by weight are consolidated
Agent mixing and emulsifying, modified polyurethane binding agent A2 is made.
Embodiment 3
1) by the tetraethyl orthosilicate of 10 parts by weight, the glacial acetic acid of 100 parts by weight, the nano magnesia of 8 parts by weight, 25 weight
The absolute ethyl alcohol of part and the water mixing of 30 parts by weight, are made the first mixed liquor；
2) by the butyl titanate of 10 parts by weight, the glacial acetic acid of 25 parts by weight, the nano magnesia of 5 parts by weight, 20 weight
The absolute ethyl alcohol of part and the water mixing of 20 parts by weight, are made the second mixed liquor；
3) in the case where stir speed (S.S.) is 500r/min stirring condition, 0.2 weight is added into the first mixed liquor of 1 parts by weight
The neopentyl glycol of part, the second mixed liquor of 1.2 parts by weight is then added dropwise with 150 drops/min drop rate thereto again, obtains
Mixed solution, then above-mentioned mixed solution is stood, form gel；
4) above-mentioned gel is placed under conditions of drying temperature is 90 DEG C after drying 1h and ground, then be placed in sintering temperature and be
Roasting 2h is carried out under conditions of 480 DEG C, particulate is made；
5) by the particulate obtained above of 10 parts by weight, 30 parts by weight IPDI diisocyanate and
After the polyether Glycols mixing of 100 parts by weight, it is placed under conditions of temperature is 100 DEG C and places 5h, mixture M 1 is made；
6) mixture M obtained above 1 of 100 parts by weight, 3 parts by weight 2,2'- dihydromethyl propionic acids and 3 parts by weight are consolidated
Agent mixing and emulsifying, modified polyurethane binding agent A3 is made.
Embodiment 4
It is prepared by the preparation method according to embodiment 1, unlike, in step 1), the dosage of the glacial acetic acid is 50
Parts by weight, the dosage of the nano magnesia is 2 parts by weight, and the dosage of the absolute ethyl alcohol is 10 parts by weight, is made modified poly-
Urethane binding agent A4.
Embodiment 5
It is prepared by the preparation method according to embodiment 2, unlike, in step 2), the dosage of the glacial acetic acid is 10
Parts by weight, the dosage of the nano magnesia is 1 parts by weight, and the dosage of the absolute ethyl alcohol is 5 parts by weight, and modified poly- ammonia is made
Ester binding agent A5.
Comparative example 1
It is prepared by the preparation method according to embodiment 3, unlike, it is added without in step 1) and step 2) nano oxidized
Magnesium, polyurethane adhesive D1 is made.
Comparative example 2
It is prepared by the preparation method according to embodiment 3, unlike, neopentyl glycol is added without in step 3), is made poly-
Urethane binding agent D2.
Test case
A1-A5, D1 and D2 obtained above are detected into its elongation at break and tearing strength according to GB/T19250 respectively,
Obtained result is as shown in table 1.
Table 1
| Numbering | Elongation at break (%) | Tearing strength (N/mm) |
| A1 | 620 | 26 |
| A2 | 640 | 25 |
| A3 | 630 | 26 |
| A4 | 540 | 22 |
| A5 | 550 | 21 |
| D1 | 320 | 12 |
| D2 | 280 | 13 |
The preferred embodiment of the present invention described in detail above, still, the present invention are not limited in above-mentioned embodiment
Detail, in the range of the technology design of the present invention, a variety of simple variants can be carried out to technical scheme, this
A little simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (10)
1. a kind of preparation method of modified polyurethane binding agent, it is characterised in that the preparation method includes：
1) tetraethyl orthosilicate, glacial acetic acid, nano magnesia, absolute ethyl alcohol and the first water are mixed, the first mixed liquor is made；
2) butyl titanate, glacial acetic acid, nano magnesia, absolute ethyl alcohol and the second water are mixed, the second mixed liquor is made；
3) neopentyl glycol under agitation, is added into the first mixed liquor, the second mixed liquor is then added dropwise thereto again, obtains
Mixed solution, then above-mentioned mixed solution is stood, form gel；
4) it will be calcined after above-mentioned gel drying, particulate be made；
5) after mixing particulate obtained above, diisocyanate and PPG, it is placed in the condition that temperature is 90-120 DEG C
Lower placement 3-6h, mixture M 1 is made；
6) by mixture M 1 obtained above, chain extender and curing agent mixing and emulsifying, modified polyurethane binding agent is made.
2. preparation method according to claim 1, wherein, in step 1), relative to the positive silicic acid second of 10 parts by weight
Ester, the dosage of the glacial acetic acid are 80-120 parts by weight, and the dosage of the nano magnesia is 5-10 parts by weight, the anhydrous second
The dosage of alcohol is 15-30 parts by weight, and the dosage of first water is 20-50 parts by weight.
3. preparation method according to claim 1 or 2, wherein, in step 2), relative to the metatitanic acid four of 10 parts by weight
Butyl ester, the dosage of the glacial acetic acid are 20-30 parts by weight, and the dosage of the nano magnesia is 2-8 parts by weight, the anhydrous second
The dosage of alcohol is 10-30 parts by weight, and the dosage of second water is 10-30 parts by weight.
4. preparation method according to claim 1 or 2, wherein, in step 3), first mixed liquor：Described new penta 2
Alcohol：The amount ratio of second mixed liquor is 1 parts by weight：0.1-0.2 parts by weight：0.8-1.5 parts by weight；
Stir speed (S.S.) is 300-800r/min.
5. preparation method according to claim 1 or 2, wherein, drop rate is 100-200 drops/min in step 3).
6. preparation method according to claim 1 or 2, wherein, drying temperature is 80-100 DEG C in step 4), drying time
For 1-2h；
Sintering temperature is 450-500 DEG C, roasting time 1-3h.
7. preparation method according to claim 1 or 2, wherein, also include after being dried in step 4) to dried solid
It is calcined again after being ground.
8. preparation method according to claim 1 or 2, wherein, the diisocyanate is selected from isophorone diisocyanate
Ester and/or hexamethylene diisocyanate；
The PPG is selected from polyether Glycols；
Preferably, the number-average molecular weight of the polyether Glycols is 800-1200；
It is further preferred that in step 5), relative to the PPG of 100 parts by weight, the dosage of the particulate is 5-
20 parts by weight, the dosage of the diisocyanate is 10-50 parts by weight.
9. preparation method according to claim 1 or 2, wherein, in step 6), relative to the mixing of 100 parts by weight
Thing M1, the dosage of the chain extender is 1-5 parts by weight, and the dosage of the curing agent is 1-5 parts by weight；
Preferably, the chain extender is selected from 2,2'- dihydromethyl propionic acids and/or cumyl peroxide.
10. modified polyurethane binding agent made from the preparation method in a kind of 1-9 according to claim described in any one.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114836161A (en) * | 2022-05-30 | 2022-08-02 | 郑春华 | Preparation process of blending modified polyurethane adhesive |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114836161A (en) * | 2022-05-30 | 2022-08-02 | 郑春华 | Preparation process of blending modified polyurethane adhesive |
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