CN105925229A - Shoe cellulose powder modified polyurethane adhesive and preparation method thereof - Google Patents
Shoe cellulose powder modified polyurethane adhesive and preparation method thereof Download PDFInfo
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- CN105925229A CN105925229A CN201610480447.2A CN201610480447A CN105925229A CN 105925229 A CN105925229 A CN 105925229A CN 201610480447 A CN201610480447 A CN 201610480447A CN 105925229 A CN105925229 A CN 105925229A
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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
-
- 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
- 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
- C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
- C08G18/4081—Mixtures of compounds of group C08G18/64 with other macromolecular compounds
-
- 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
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4202—Two or more polyesters of different physical or chemical nature
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—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
-
- 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
- C08G18/64—Macromolecular compounds not provided for by groups C08G18/42 - C08G18/63
- C08G18/6484—Polysaccharides and derivatives thereof
-
- 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
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/75—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
- C08G18/751—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring
- C08G18/752—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group
- C08G18/753—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group
- C08G18/755—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group and at least one isocyanate or isothiocyanate group linked to a secondary carbon atom of the cycloaliphatic ring, e.g. isophorone diisocyanate
-
- 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
- C08G18/74—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
-
- 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
- C08G2170/00—Compositions for adhesives
- C08G2170/90—Compositions for adhesives used in footwear
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a shoe cellulose powder modified polyurethane adhesive and a preparation method thereof. The shoe cellulose powder modified polyurethane adhesive is prepared from the following components in parts by mass: 150 to 200 parts of diphenylmethane diisocyanate, 20 to 50 parts of isophorone diisocyanate, 200 to 400 parts of polyester glycol, 30 to 60 parts of chain extender, 1 to 10 parts of cellulose powder, and 2000 to 4000 parts of solvent. The preparation method has the advantages that under the synergistic action of two types of active isocyanate, by adopting different types of hydroxyl raw materials, the initial viscosity, hydrolysis resistance, wet and heat aging resistance and the like of products are improved; the technology implementing is good, and the environment-friendly and non-pollution effects are realized.
Description
Technical field
The present invention relates to a kind of adhesive for shoes and preparation method, be specifically related to a kind of modifies poly-ammonia of footwear cellulose powder
Ester gum stick and preparation method thereof.
Background technology
The shoes-used glue that there are about 95% in the market uses chloroprene rubber adhesive agent, and polyurethane consumption is less, and chloroprene rubber adhesive agent has
Have tack good, can the advantage such as cold bonding, low price, but its not plasticizer-resistant infiltration, to soft pvc, thermoplastic elastomer, PU leather etc.
Novel material for shoes bad adhesion, must apply benzene kind solvent in addition, and environment and human body cause very major injury, inadaptable system
The requirement of footwear industrial development, polyurethane shoes-used glue has excellent elasticity, flexibility, flexible resistance obtain recognizing of shoemaking industry
Can, such as, the Desmocoll series of products of the German Bayer company that market commonly uses and Merquinsa company of Spain
Pearlstick series of products, but its high temperature is ageing-resistant, hydrolytic resistance is extremely difficult to requirement, is also the development of shoemaking industry
Bottleneck.To sum up, it is desirable to provide a kind of high temperature is ageing-resistant, the modified polyurethane shoes-used glue of hydrolytic resistance.
Summary of the invention
It is an object of the invention to provide a kind of modifies polyurethane adhesive of footwear cellulose powder and preparation method thereof, this
The polyurethane adhesive of bright offer has high ageing-resistant, the performance of high hydrolysis resistance.
A kind of modifies polyurethane adhesive of footwear cellulose powder provided by the present invention, by the group of following mass fraction ratio
Divide and make:
Methyl diphenylene diisocyanate 150～200,
IPDI 20～50,
Polyester diol 200～400,
Chain extender 30～60,
Cellulose powder 1～10, and
Solvent 2000～4000.
The modifies polyurethane adhesive of footwear cellulose powder provided by the present invention is colourless transparent liquid, solid content up to
15%～25%, such as 19.5%.
In the above-mentioned modifies polyurethane adhesive of footwear cellulose powder, described polyester diol is selected from polycaprolactone two
Unit alcohol, 1,4-butanediol-adipic acid copolymerization dihydroxylic alcohols, 1,4-butanediol-1,6 hexylene glycols-adipic acid copolymerization dihydroxylic alcohols, new penta 2
Alcohol-adipic acid copolymer glycols, methyl propanediol-adipic acid copolymer glycols and methyl propanediol-neopentyl glycol-adipic acid copolymerization two
In alcohol at least one；
The number-average molecular weight of described polyester diol can be 1000～3000.
In the above-mentioned modifies polyurethane adhesive of footwear cellulose powder, described chain extender is selected from neopentyl glycol, methyl
In propane diols, 1,4-butanediol and 1,6-HD at least one.
In the above-mentioned modifies polyurethane adhesive of footwear cellulose powder, described solvent be selected from butanone, ethyl acetate and
In acetone at least one.
In the above-mentioned modifies polyurethane adhesive of footwear cellulose powder, described cellulose powder can be Chinese Kenaf Core Buffer powder, wheat
In stalk powder and bamboo pole powder at least one；The particle diameter of described cellulose powder can be 10～30 microns.
The described modifies polyurethane adhesive of footwear cellulose powder specifically can be made up of the component of following mass fraction ratio:
Methyl diphenylene diisocyanate 120,
IPDI 30,
(1,4-butanediol-adipic acid copolymerization dihydroxylic alcohols and 1,4-butanediol-1,6 hexylene glycols-adipic acid are common for polyester diol
Poly-dihydric alcohol) 390,
Chain extender (neopentyl glycol and Isosorbide-5-Nitrae butanediol) 30.5,
Cellulose powder (Chinese Kenaf Core Buffer powder) 5, and
Solvent (ethyl acetate, butanone and acetone) 2375.
In the above-mentioned modifies polyurethane adhesive of footwear cellulose powder, the described polyurethane adhesive viscosity when 25 DEG C
It is 1000～3500mPa.s.
The present invention still further provides the preparation method of above-mentioned polyurethane adhesive, comprises the steps:
(1) described methyl diphenylene diisocyanate, described polyester diol and described cellulose powder react；To institute
State and the product of reaction adds described IPDI, obtain performed polymer through prepolymerization reaction；
(2) in described performed polymer, add described chain extender and carry out chain extending reaction；Then to the reaction of described chain extending reaction
System adds described solvent and i.e. obtains described polyurethane adhesive.
In above-mentioned preparation method, in step (1), the temperature of described reaction can be 80～90 DEG C, the time can be 0.75～
1.25 hours, as reacted 1 hour at 85 DEG C.
In above-mentioned preparation method, in step (1), the temperature of described prepolymerization reaction can be 85～95 DEG C, and the time can be
2.75～3.25 hours, as reacted 3 hours at 90 DEG C.
In above-mentioned preparation method, in step (2), the temperature of described chain extending reaction can be 50～80 DEG C, the time can be 2～
5 hours, as reacted 4 hours at 50 DEG C.
Polyurethane adhesive that the present invention provides and preparation method thereof has the advantages that
(1) present invention is by selecting methyl diphenylene diisocyanate and IPDI, both activity
Isocyanate groups synergy can improve fastness and anti-hydrolytic performance.Raw material methyl diphenylene diisocyanate and isophorone
Diisocyanate is respectively provided with circulus, and in building-up process, circulus is stable, remains to exist after forming high polymer, and this structure can
To increase the rigidity of product, good springiness, anti-hydrolytic performance is strengthened, and improves hydrolysis, ageing-resistant performance.
(2) present invention uses has the chain extender of pendant methyl to carry out chain extension, can increase repulsion between products molecule, produces position
Resistance, improves hydrolysis and anti-wear performance.BDO, 1,6-hexylene glycol belongs to even-numbered carbon atom glycol, itself and adipic acid
The dihydroxylic alcohols of copolymerization, it is possible to be easier to form hydrogen bond, makes polymer molecular chain be easier to crystallization, effectively strengthens tack.
(3) present invention selects cellulose powder to make as raw material, because of in Chinese fiber crops containing amino, hydroxyl isoreactivity group, this
Class reaction can generate polyurethane-urea structure, has bigger cohesive force and bonding force than the ammonia ester bond of pure polyurethane, urea bond resistance to
Water-disintegrable better than ammonia ester bond, fastness can be effectively improved simultaneously, ageing-resistant performance gets a promotion.
(4) preparation method that the present invention provides has been selected the synergy of two kinds of active isocyanate groups, different types of
Hydroxyl raw material is to improve the characteristics such as product tack, hydrolysis, wet and heat ageing resistant.This product has good process implementing,
And it is environment friendly and pollution-free.
Detailed description of the invention
Experimental technique used in following embodiment if no special instructions, is conventional method.
Material used in following embodiment, reagent etc., if no special instructions, the most commercially obtain.
Embodiment 1, prepare the modifies polyurethane adhesive of footwear cellulose powder
(1) by the hemp stalk core powder of the methyl diphenylene diisocyanate of 120 mass parts, 5 mass parts, (particle diameter is 20 micro-
Rice), the 1,4-butanediol-adipic acid copolymerization dihydroxylic alcohols (molecular weight is 1500) of 60 mass parts, the 1,4-fourth two of 330 mass parts
Alcohol-1,6 hexylene glycols-adipic acid copolymerization dihydroxylic alcohols (molecular weight is 2000) adds in reactor, is warming up to 85 DEG C and carries out polymerization instead
Answer 1 hour；Then in this reaction system, add the IPDI of 30 mass parts, carry out prepolymerization reaction in 90 DEG C
Within 3 hours, obtain performed polymer.
(2) upwards walk and the performed polymer obtained adds the neopentyl glycol of 10.5 mass parts and 20 mass parts 1,4 butanediols are made
For chain extender, carrying out chain extending reaction at 50 DEG C, when reacting 4 and being little, viscosity and the temperature of this reaction system the most no longer rise, and add
Enter 500 mass parts ethyl acetate, 1500 mass parts butanone and 375 mass parts acetone solvents regulation viscosity to about 2000mPa.s, i.e.
Obtain the modifies polyurethane adhesive of footwear cellulose powder.
The modifies polyurethane adhesive of footwear cellulose powder prepared by the present embodiment is colourless transparent liquid, and solid content is
19.5%.
Embodiment 2, the performance test of the modifies polyurethane adhesive of footwear cellulose powder
One, the performance test of the modifies polyurethane adhesive of footwear cellulose powder of embodiment 1 preparation
Composite sole is prepared: i.e. glue with this modified polyurethane adhesive with the modified polyurethane adhesive of embodiment 1 preparation
Knot rubber outsole and the bonding of the middle end.Wherein, composite sole is by chopped fiber (addition is not less than 3%) modified rubber (natural rubber
Glue, butadiene rubber content are not less than 55%) outer bottom, Chinese Kenaf Core Buffer superfine powder (addition be no less than 3%) modified EVA foaming note
Mould the middle end to be made by Chinese Kenaf Core Buffer superfine powder modified polyurethane glue bond with thermoplastic polyurethane injection arch support frame.
The performance test results of the composite sole of above-mentioned preparation is as shown in table 1.
The performance test of table 1 composite sole
From the data in table 1, the modifies polyurethane adhesive of footwear cellulose powder prepared by the present invention has stronger
Wet and heat ageing resistant performance.
Three, the peel strength of the modifies polyurethane adhesive of footwear cellulose powder of embodiment 1 preparation
3.1 Testing apparatus
Testing apparatus includes: puller system, ruler, knife.
3.2 test condition
Test temperature and humidity conditions is: (23 ± 2) DEG C, (50 ± 5) %RH.
3.3 sample size
Composite sole 3.
3.4 test requirements document
A) width of part: 10 ± 1mm is cut open.
B) speed of puller system: 200mm/min.
3.5 testing procedure
A) test sample balances more than 8h in laboratory environment.
B) for becoming shoe pattern product, first take out shoe-pad, along becoming instep tree lace knife, vamp is cut off.
C) outermost end along the middle end and rubber outsole joint portion draws the sole of a circle 10mm width in the middle of sole, draws
Line width is that L, L generally take 10mm.Structure for having causes short of width 10mm's, should measure the width L at this, record
Come.
D) cutting open along the line knife finished, should ensure that and fit like a glove with line when cutting, width is 10mm, and cut deep
Degree is the deepest.
E) uniformly take a little on the sample cut, be separated by 20mm and take a point.
F) cut open the scarfing of 20mm in the joint place of sample with knife, scarfing along the clockwise direction of sole, then
Specimen holder is on puller system.If running into the difficult situation about pulling open of comparison, puller system speed can be adjusted to 50mm/min.
G) puller system starts test, records lowest pull value F between every 2, and each sample at least records more than 20
F value.
If h) encountering underproof point, also to annotate the type understanding malsegregation.
3.6 test result
A) calculate the peel strength of test point according to formula (E.1), take two position effective digitals.Final result of the test takes all strippings
Minimum of a value from intensity.
In formula:
The peel strength of S test point, unit is N/cm；
The lowest pull value of F test point sample, unit is N；
The width of L test point sample, unit is mm.
B) for aged samples, its mean peel strength is the arithmetic average of the peel strength of each test point.
Table 1 test report
Note: initial stage peel strength refers to latter 1 day re-test of fitting, later stage peel strength is placed after referring to laminating and is surveyed for 5 days again
Examination.
Heat ageing condition: 70 DEG C；Humidification aging condition: 70 DEG C, 95%RH.
Comparative resin is to be not added with the polyurethane adhesive of cellulose powder.
By data in table 1 it can be seen that invention adhesive has the advantage of wet and heat ageing resistant, and there is high stripping
Intensity.
Claims (10)
1. the modifies polyurethane adhesive of footwear cellulose powder, is made up of the component of following mass fraction ratio:
Methyl diphenylene diisocyanate 150～200,
IPDI 20～50,
Polyester diol 200～400,
Chain extender 30～60,
Cellulose powder 1～10, and
Solvent 2000～4000.
Polyurethane adhesive the most according to claim 1, it is characterised in that: described polyester diol is selected from polycaprolactone two
Unit alcohol, 1,4-butanediol-adipic acid copolymerization dihydroxylic alcohols, 1,4-butanediol-1,6 hexylene glycols-adipic acid copolymerization dihydroxylic alcohols, new penta 2
Alcohol-adipic acid copolymer glycols, methyl propanediol-adipic acid copolymer glycols and methyl propanediol-neopentyl glycol-adipic acid copolymerization two
In alcohol at least one；
The number-average molecular weight of described polyester diol is 1000～3000.
Polyurethane adhesive the most according to claim 1 and 2, it is characterised in that: described chain extender is selected from neopentyl glycol, first
In base propane diols, 1,4-butanediol and 1,6-HD at least one.
4. according to the polyurethane adhesive according to any one of claim 1-3, it is characterised in that: described solvent selected from butanone,
In ethyl acetate and acetone at least one.
5. according to the polyurethane adhesive according to any one of claim 1-4, it is characterised in that: described polyurethane adhesive exists
Viscosity when 25 DEG C is 1000～3500mPa.s.
6. according to the polyurethane adhesive according to any one of claim 1-5, it is characterised in that: described polyurethane adhesive by
According to any one of claim 7-10 prepared by method.
7. the preparation method of polyurethane adhesive according to any one of claim 1-6, comprises the steps:
(1) described methyl diphenylene diisocyanate, described polyester diol and described cellulose powder react；To described
The product of reaction adds described IPDI, obtains performed polymer through prepolymerization reaction；
(2) in described performed polymer, add described chain extender and carry out chain extending reaction；Then to the reaction system of described chain extending reaction
The described solvent of middle addition i.e. obtains described polyurethane adhesive.
Method the most according to claim 7, it is characterised in that: in step (1), the temperature of described reaction is 80～90 DEG C,
Time is 0.75～1.25 hour.
9. according to the method described in claim 7 or 8, it is characterised in that: in step (1), the temperature of described prepolymerization reaction is 85
～95 DEG C, the time is 2.75～3.25 hours.
10. according to the method according to any one of claim 7-9, it is characterised in that: in step (2), described chain extending reaction
Temperature is 50～80 DEG C, and the time is 2～5 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610480447.2A CN105925229A (en) | 2016-06-27 | 2016-06-27 | Shoe cellulose powder modified polyurethane adhesive and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610480447.2A CN105925229A (en) | 2016-06-27 | 2016-06-27 | Shoe cellulose powder modified polyurethane adhesive and preparation method thereof |
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| CN105925229A true CN105925229A (en) | 2016-09-07 |
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| CN201610480447.2A Pending CN105925229A (en) | 2016-06-27 | 2016-06-27 | Shoe cellulose powder modified polyurethane adhesive and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113234398A (en) * | 2021-04-30 | 2021-08-10 | 广东裕田霸力科技股份有限公司 | Environment-friendly cold-bonding polyurethane adhesive and preparation method thereof |
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| CN102212324A (en) * | 2010-04-07 | 2011-10-12 | 上海安宇高分子材料有限公司 | Polyurethane spray gel solution and method for preparing same |
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| CN113234398A (en) * | 2021-04-30 | 2021-08-10 | 广东裕田霸力科技股份有限公司 | Environment-friendly cold-bonding polyurethane adhesive and preparation method thereof |
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Application publication date: 20160907 |