CN108250397A - A kind of aqueous tetrahydroabietic acid block urethane resin, preparation method and its application - Google Patents
A kind of aqueous tetrahydroabietic acid block urethane resin, preparation method and its application Download PDFInfo
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- CN108250397A CN108250397A CN201810027041.8A CN201810027041A CN108250397A CN 108250397 A CN108250397 A CN 108250397A CN 201810027041 A CN201810027041 A CN 201810027041A CN 108250397 A CN108250397 A CN 108250397A
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- aqueous
- tetrahydroabietic acid
- urethane resin
- polyurethane
- tetrahydroabietic
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- 0 CC(C)[C@](CC1)CC(CC2)C1[C@@](*)(CCC1)C2[C@@]1(C)C(OC*)=O Chemical compound CC(C)[C@](CC1)CC(CC2)C1[C@@](*)(CCC1)C2[C@@]1(C)C(OC*)=O 0.000 description 2
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
-
- 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
- C08G18/2805—Compounds having only one group containing active hydrogen
- C08G18/281—Monocarboxylic acid 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
- C08G18/48—Polyethers
- C08G18/4833—Polyethers containing oxyethylene units
-
- 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
Abstract
The embodiment of the present application shows a kind of aqueous tetrahydroabietic acid block urethane resin, preparation method and its application, a kind of aqueous tetrahydroabietic acid blocked polyurethane shown in the embodiment of the present application is based on Hdyrophilic polyurethane, it is made after being esterified termination process with tetrahydroabietic acid, aqueous tetrahydroabietic acid blocked polyurethane does not have the introducing of halogen in preparation process, also it is environmentally friendly pollution-free without using the organic solvents such as toluene, dimethylbenzene.Aqueous tetrahydroabietic acid blocked polyurethane only needs to be directly applied on plastic film when in use, it is bonded after drying with paper or aluminizer, it can obtain overlay film, therefore in use without using organic solvent, to laminating packaging product noresidue solvent infringement, it is environmentally friendly pollution-free, and there is apparent adhesion effect to the plastic film substrates such as Biaxially oriented polypropylene, blow-molding polyethylene membrane surface, it is particularly suitable for oiliness adhesive, plastic film and base material can be bonded securely, make base material not easily to fall off.
Description
Technical field
The present invention relates to film covered resin field more particularly to a kind of aqueous tetrahydroabietic acid block urethane resin, preparation sides
Method and its application.
Background technology
Laminating packaging is two or more material, laminating by one or many dry types using the laminating technology of film
Technique and combine, so as to form the packaging of certain function.Laminating packaging generally can be divided into base, functional layer and heat-sealing
Layer.Base mainly plays beauty, prints and hinder the effects that wet, and common base material mainly includes：Biaxially oriented polypropylene is thin
Film (BOPP), biaxially oriented polyester film (BOPET), BON biaxially oriented nylon film (BOPA) and polyester film (PET) etc.；Work(
The effects that ergosphere mainly plays barrier, is protected from light, common functional layer material mainly includes：Polyester aluminizer (VMPET), ethylene-second
Enol copolymer (EVOH) and polyvinylidene chloride (PVDC) etc.；Hot sealing layer is in direct contact with packing article, plays adaptability, resistance to
Permeability, good heat sealability, the transparency and the functions such as day property are opened, one layer of plastic films (poly- third are such as pasted on BOPP
Alkene, polyethylene, phenolic resin etc.), so as to improve the various patience of packaging material, such as water resistance, wet-hot aging performance, weathering
Property, grease resistance etc..
In general, it needs to connect using oiliness adhesive between the base of laminating packaging and functional layer and base and hot sealing layer.
Oiliness adhesive of the prior art is amino resins, i.e., amino resins is coated between base and functional layer, to reach bonding
Purpose.
However, when the plastic film for selecting surface energy relatively low is as functional layer material, using amino resins as oiliness
During adhesive, the adhesive force of amino resins on a plastic film is low, and easily there are plastic films and base material (such as paper or plating
Aluminium film) bonding loosely, the problem of degree of wetting is inadequate, causes overlay film white point occur, phenomena such as patience significantly reduces.
Invention content
The present invention provides a kind of aqueous tetrahydroabietic acid block urethane resin, preparation method and its application, existing to solve
The medium oil adhesive amino resins of technology the problem of adhesive force is low on a plastic film.
The embodiment of the present application first aspect provides a kind of aqueous tetrahydroabietic acid block urethane resin, the aqueous tetrahydrochysene
The structural formula of abietic acid block urethane resin is as follows：
In formula, R1For the polyurethane structural of esterification can occur with carboxylic acid.
Optionally, the R1For hydroxyl-terminated polyurethane structure.
Optionally, the R1Structural formula it is as follows：
In formula, R2For isocyanates and poly-dihydric alcohol polyurethane structural obtained by the reaction, n is whole more than or equal to zero
Number.
Optionally, the poly-dihydric alcohol is polyethylene glycol of the molecular weight between 200-2000.
Optionally, the isocyanates be isophorone diisocyanate, hexamethylene diisocyanate, toluene diisocyanate
One kind in acid esters, methyl diphenylene diisocyanate or biuret polyisocyanate.
A kind of preparation method of aqueous tetrahydroabietic acid block urethane resin of the embodiment of the present application second aspect, including following
Step：
Poly-dihydric alcohol is subjected to vacuum dehydration processing；
Above-mentioned poly-dihydric alcohol with isocyanates is mixed at normal temperatures, obtains polyurethane resin；
Above-mentioned polyurethane resin with tetrahydroabietic acid is mixed, catalyst is added in, is evacuated to 0.1KPa, controlling reaction temperature
And the reaction time, esterification occurs, generates aqueous tetrahydroabietic acid block urethane resin.
Optionally, the catalyst is phosphoric acid, polyphosphoric acids, organic sulfonic acid, one kind or several in sulfuric acid and tin laurate
Kind.
Optionally, the reaction temperature control is at 120 DEG C -160 DEG C.
Optionally, the reaction time control was at -6.5 hours 4.5 hours.
The embodiment of the present application third aspect shows application of the aqueous tetrahydroabietic acid block urethane resin in coating technique
Including, above-mentioned aqueous tetrahydroabietic acid block urethane resin is directly applied on plastic film, after drying with paper or aluminizer
Bonding, obtains overlay film.
The embodiment of the present application shows a kind of aqueous tetrahydroabietic acid blocked polyurethane, preparation method and its application, and the application is real
A kind of aqueous tetrahydroabietic acid blocked polyurethane exemplified is applied based on Hdyrophilic polyurethane, is blocked by being esterified with tetrahydroabietic acid
It is made after processing, aqueous tetrahydroabietic acid blocked polyurethane does not have the introducing of halogen in preparation process, without using first yet
The organic solvents such as benzene, dimethylbenzene, it is environmentally friendly pollution-free.Aqueous tetrahydroabietic acid blocked polyurethane only needs it is straight when in use
It connects and is coated onto on plastic film, bonded after drying with paper or aluminizer, you can obtain overlay film, therefore need not make in use
It is environmentally friendly pollution-free to laminating packaging product noresidue solvent infringement with organic solvent, and to biaxial stretching polypropylene
There is apparent adhesion effect on the plastic film substrates such as alkene, blow-molding polyethylene membrane surface, and adhesive force is high, is particularly suitable for oily gum
Glutinous agent when the plastic film for selecting surface energy relatively low is as functional layer material, is made using aqueous tetrahydroabietic acid blocked polyurethane
For oiliness adhesive, plastic film and base material can be bonded securely, make base material not easily to fall off.
Specific embodiment
Below in conjunction with the embodiment of the present invention, clear, complete description is carried out to the technical solution in the embodiment of the present invention,
Obviously, described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, those of ordinary skill in the art's all other embodiments obtained without making creative work, all
Belong to the scope of protection of the invention.
The embodiment of the present application first aspect provides a kind of aqueous tetrahydroabietic acid block urethane resin, the aqueous tetrahydrochysene
The structural formula of abietic acid block urethane resin is as follows：
In formula, R1For the polyurethane structural of esterification can occur with carboxylic acid.
Optionally, the R1For hydroxyl-terminated polyurethane structure.
Optionally, the R1Structural formula it is as follows：
In formula, R2For isocyanates and poly-dihydric alcohol polyurethane structural obtained by the reaction, n is whole more than or equal to zero
Number.
Optionally, the poly-dihydric alcohol is polyethylene glycol of the molecular weight between 200-2000.
Optionally, the isocyanates be isophorone diisocyanate, hexamethylene diisocyanate, toluene diisocyanate
One kind in acid esters, methyl diphenylene diisocyanate or biuret polyisocyanate.
A kind of aqueous tetrahydroabietic acid block urethane resin shown in the embodiment of the present application, wherein, the introducing of tetrahydroabietic acid
Adhesion ability, mechanical strength and the stability of aqueous tetrahydroabietic acid block urethane resin are increased, seals aqueous tetrahydroabietic acid
End polyurethane resin is easier to be attached to the plastic film substrates such as oriented polypropylene, blow-molding polyethylene membrane surface, and adhesive force is high,
And the stability after adhering to is high, not easily to fall off.Specifically, tetrahydroabietic acid contains bulky condensed cyclic structure, can greatly carry
High tetrahydroabietic acid block urethane resin is attached the plastic film substrates such as Biaxially oriented polypropylene, blow-molding polyethylene membrane surface
Performance.
A kind of preparation method of aqueous tetrahydroabietic acid block urethane resin of the embodiment of the present application second aspect, including following
Step：
Poly-dihydric alcohol is subjected to vacuum dehydration processing；
Above-mentioned poly-dihydric alcohol with isocyanates is mixed at normal temperatures, obtains polyurethane resin；
Above-mentioned polyurethane resin with tetrahydroabietic acid is mixed, catalyst is added in, is evacuated to 0.1KPa, controlling reaction temperature
And the reaction time, esterification occurs, aqueous tetrahydroabietic acid is made after being esterified termination process with tetrahydroabietic acid and blocks poly- ammonia
Ester resin.
Specifically, by taking polyethylene glycol and isophorone diisocyanate as an example, aqueous tetrahydroabietic acid blocked polyurethane is sketched
The building-up process of resin：
Polyethylene glycol is subjected to vacuum dehydration processing；
Above-mentioned polyethylene glycol with isophorone diisocyanate is mixed, obtains polyurethane resin after being stirred under room temperature, institute
It is for use to state polyurethane resin；
Above-mentioned polyurethane resin and tetrahydroabietic acid are mixed in three-necked flask, the moon is added in through rubber closure with syringe
After cinnamic acid tin esterification catalyst, it is heated to 423K in oil bath, and be evacuated to 0.1KPa, and insulation reaction 4.5 hours -6.5
Hour postcooling, you can obtain aqueous tetrahydroabietic acid block urethane resin.
Specific synthetic route is as follows：
Optionally, the catalyst is phosphoric acid, polyphosphoric acids, organic sulfonic acid, one kind or several in sulfuric acid and tin laurate
Kind.
Optionally, the reaction temperature control is at 120 DEG C -160 DEG C.Less than 120 DEG C tetrahydroabietic acid sealing ends of reaction temperature are poly-
Urethane yield is low, and reaction temperature is higher than 160 DEG C of decomposition that can cause polyethers key, influences the property of aqueous tetrahydroabietic acid blocked polyurethane
Energy.
Optionally, reaction time control was at -6.5 hours 4.5 hours.
The embodiment of the present application second aspect shows a kind of aqueous tetrahydroabietic acid blocked polyurethane preparation method, including that will gather
Dihydric alcohol carries out vacuum dehydration processing；Above-mentioned poly-dihydric alcohol with isocyanates is mixed at normal temperatures, obtains polyurethane tree
Fat；Above-mentioned polyurethane resin with tetrahydroabietic acid is mixed, catalyst is added in, is evacuated to 0.1KPa, controlling reaction temperature and when
Between, esterification occurs, aqueous tetrahydroabietic acid block urethane resin is made after being esterified termination process with tetrahydroabietic acid.This
A kind of aqueous tetrahydroabietic acid blocked polyurethane preparation method that application is implemented to exemplify does not have the introducing of halogen, does not make yet
It is environmentally friendly pollution-free with organic solvents such as toluene, dimethylbenzene.
The embodiment of the present application third aspect shows application of the aqueous tetrahydroabietic acid block urethane resin in coating technique,
Including, above-mentioned aqueous tetrahydroabietic acid block urethane resin is directly applied on plastic film, after drying with paper or aluminizer
Bonding, obtains overlay film.
Application of the aqueous tetrahydroabietic acid block urethane resin in coating technique shown in the embodiment of the present application, used
It is environmentally friendly pollution-free to laminating packaging product noresidue solvent infringement without using organic solvent in journey, and to two-way
There is apparent adhesion effect on the plastic film substrates such as oriented polypropylene, blow-molding polyethylene membrane surface, and adhesive force is high, particularly suitable use
In oiliness adhesive, when the plastic film for selecting surface energy relatively low is as functional layer material, blocked using aqueous tetrahydroabietic acid
Plastic film and base material can be bonded securely as oiliness adhesive, make base material not easily to fall off by polyurethane.
The embodiment of the present application shows a kind of aqueous tetrahydroabietic acid blocked polyurethane, preparation method and its application, and the application is real
A kind of aqueous tetrahydroabietic acid blocked polyurethane exemplified is applied based on Hdyrophilic polyurethane, is blocked by being esterified with tetrahydroabietic acid
It is made after processing, aqueous tetrahydroabietic acid blocked polyurethane does not have the introducing of halogen in preparation process, without using first yet
The organic solvents such as benzene, dimethylbenzene, it is environmentally friendly pollution-free.Aqueous tetrahydroabietic acid blocked polyurethane only needs it is straight when in use
It connects and is coated onto on plastic film, bonded after drying with paper or aluminizer, you can obtain overlay film, therefore need not make in use
It is environmentally friendly pollution-free to laminating packaging product noresidue solvent infringement with organic solvent, and to biaxial stretching polypropylene
There is apparent adhesion effect on the plastic film substrates such as alkene, blow-molding polyethylene membrane surface, and adhesive force is high, is particularly suitable for oily gum
Glutinous agent when the plastic film for selecting surface energy relatively low is as functional layer material, is made using aqueous tetrahydroabietic acid blocked polyurethane
For oiliness adhesive, plastic film and base material can be bonded securely, make base material not easily to fall off.
In order to further illustrate the present invention, a kind of aqueous tetrahydroabietic acid shown in the present invention is blocked with reference to embodiment
Polyurethane, preparation method and its application are described in detail, but they cannot be interpreted as the limit to the scope of the present invention
It is fixed.
The adhesive force test of aqueous tetrahydroabietic acid blocked polyurethane：The aqueous tetrahydroabietic acid blocked polyurethane prepared is done
It into ink, is then printed on BOPP (bidirectional stretching polypropylene film) intaglio plate, places 8 hours, sticked after dry in ink layer
Adhesive tape pulls open adhesive tape, is judged according to fastness effect according to the degree of coming off of ink, does not come off or slight de-
It falls, illustrates strong adhesive force, large area comes off, and illustrates that adhesive force effect is poor.
Judgement (referring to national standard GB/T 7707-2008) for adhesive force relative size：Ink without it is any come off it is aqueous
The adhesive force of tetrahydroabietic acid blocked polyurethane is more than the adhesive force of the slight show-through aqueous tetrahydroabietic acid blocked polyurethane of intaglio plate；It is recessed
The adhesive force of the slight show-through aqueous tetrahydroabietic acid blocked polyurethane of version is more than the aqueous tetrahydroabietic acid envelope that ink small area comes off
Hold the adhesive force of polyurethane；The adhesive force of aqueous tetrahydroabietic acid blocked polyurethane that ink small area comes off significantly takes off more than ink
The adhesive force of aqueous tetrahydroabietic acid blocked polyurethane fallen.
Embodiment 1：
100g polyethylene glycol (having done dehydration) is mixed with 37 grams of isophorone diisocyanate, after being stirred under room temperature
Polyurethane resin is obtained, for use；Polyurethane resin above-mentioned 50g and 35g tetrahydroabietic acids are mixed in three-necked flask；With injection
Device is heated to 140 DEG C and is evacuated in oil bath after rubber closure adds in 2.5g polyphosphoric acids as esterification catalyst
0.1KPa, and 6 hours postcoolings of insulation reaction, obtain aqueous tetrahydroabietic acid blocked polyurethane.
Adhesive force is tested：Above-mentioned aqueous tetrahydroabietic acid blocked polyurethane is made into ink, is then printed on BOPP intaglio plates,
It places 8 hours, sticks adhesive tape in ink layer after drying, adhesive tape is pulled open, it is found that ink comes off without any, illustrate above-mentioned preparation
Aqueous tetrahydroabietic acid blocked polyurethane adhesive force is very strong.
Embodiment 2：
100g polyethylene glycol (having done dehydration) is mixed with 37 grams of isophorone diisocyanate, after being stirred under room temperature
Polyurethane resin is obtained, for use；Polyurethane resin above-mentioned 50g and 35g tetrahydroabietic acids are mixed in three-necked flask；With injection
Device is heated to 120 DEG C and is evacuated in oil bath after rubber closure adds in 2.5g polyphosphoric acids as esterification catalyst
0.1KPa, and 6 hours postcoolings of insulation reaction, obtain aqueous tetrahydroabietic acid blocked polyurethane.
Adhesive force is tested：Above-mentioned aqueous tetrahydroabietic acid blocked polyurethane is made into ink, is then printed on BOPP intaglio plates,
It places 8 hours, sticks adhesive tape in ink layer after drying, adhesive tape is pulled open, it is found that BOPP intaglio plates are slightly show-through, illustrate above-mentioned preparation
Aqueous tetrahydroabietic acid blocked polyurethane strong adhesive force.
Embodiment 3：
100g polyethylene glycol (having done dehydration) is mixed with 37 grams of isophorone diisocyanate, after being stirred under room temperature
Polyurethane resin is obtained, for use；Polyurethane resin above-mentioned 50g and 35g tetrahydroabietic acids are mixed in three-necked flask；With injection
Device is heated to 160 DEG C and is evacuated in oil bath after rubber closure adds in 2.5g polyphosphoric acids as esterification catalyst
0.1KPa, and 6 hours postcoolings of insulation reaction, obtain aqueous tetrahydroabietic acid blocked polyurethane.
Adhesive force is tested：Above-mentioned aqueous tetrahydroabietic acid blocked polyurethane is made into ink, is then printed on BOPP intaglio plates,
It places 8 hours, sticks adhesive tape in ink layer after drying, adhesive tape is pulled open, it is found that ink small area comes off, illustrate above-mentioned preparation
Aqueous tetrahydroabietic acid blocked polyurethane adhesive force is relatively weak.
Embodiment 4：
100g polyethylene glycol (having done dehydration) is mixed with 55g biuret polyisocyanates, after being stirred under room temperature
To polyurethane resin, for use；Polyurethane resin above-mentioned 50g and 52g tetrahydroabietic acids are mixed in three-necked flask；Use syringe
After rubber closure adds in 4g polyphosphoric acids as esterification catalyst, it is heated to 140 DEG C in oil bath and is evacuated to
0.1KPa, and 6 hours postcoolings of insulation reaction, obtain aqueous tetrahydroabietic acid blocked polyurethane.
Adhesive force is tested：Above-mentioned aqueous tetrahydroabietic acid blocked polyurethane is made into ink, is then printed on BOPP intaglio plates,
It places 8 hours, sticks adhesive tape in ink layer after drying, adhesive tape is pulled open, it is found that BOPP intaglio plates are slightly show-through, illustrate above-mentioned preparation
Aqueous tetrahydroabietic acid blocked polyurethane strong adhesive force.
Embodiment 5：
100g polyethylene glycol (having done dehydration) is mixed with 55g biuret polyisocyanates, after being stirred under room temperature
To polyurethane resin, for use；Polyurethane resin above-mentioned 50g and 52g tetrahydroabietic acids are mixed in three-necked flask；Use syringe
After rubber closure adds in 4g polyphosphoric acids as esterification catalyst, it is heated to 120 DEG C in oil bath and is evacuated to
0.1KPa, and 6 hours postcoolings of insulation reaction, obtain aqueous tetrahydroabietic acid blocked polyurethane.
Adhesive force is tested：Above-mentioned aqueous tetrahydroabietic acid blocked polyurethane is made into ink, is then printed on BOPP intaglio plates,
It places 8 hours, sticks adhesive tape in ink layer after drying, adhesive tape is pulled open, it is found that ink small area comes off, illustrate above-mentioned preparation
Aqueous tetrahydroabietic acid blocked polyurethane adhesive force is relatively weak.
Embodiment 6：
100g polyethylene glycol (having done dehydration) is mixed with 55g biuret polyisocyanates, after being stirred under room temperature
To polyurethane resin, for use；Polyurethane resin above-mentioned 50g and 52g tetrahydroabietic acids are mixed in three-necked flask；Use syringe
After rubber closure adds in 4g polyphosphoric acids as esterification catalyst, it is heated to 160 DEG C in oil bath and is evacuated to
0.1KPa, and 6 hours postcoolings of insulation reaction, obtain aqueous tetrahydroabietic acid blocked polyurethane.
Adhesive force is tested：Above-mentioned aqueous tetrahydroabietic acid blocked polyurethane is made into ink, is then printed on BOPP intaglio plates,
It places 8 hours, adhesive tape is sticked in ink layer after drying, it is found that ink significantly comes off, illustrate the aqueous tetrahydroabietic acid of above-mentioned preparation
Blocked polyurethane adhesive force is poor.
Those skilled in the art will readily occur to the present invention its after considering specification and putting into practice invention disclosed herein
Its embodiment.This application is intended to cover the present invention any variations, uses, or adaptations, these modifications, purposes or
Person's adaptive change follows the general principle of the present invention and including undocumented common knowledge in the art of the invention
Or conventional techniques.Description and embodiments are considered only as illustratively, and true scope and spirit of the invention are by following
Claim is pointed out.
It should be understood that the invention is not limited in the step method being described above, and can not depart from
Its range is carry out various modifications and is changed.The scope of the present invention is only limited by appended claim.
Claims (10)
- A kind of 1. aqueous tetrahydroabietic acid block urethane resin, which is characterized in that the aqueous tetrahydroabietic acid blocked polyurethane tree The structural formula of fat is as follows：In formula, R1For the polyurethane structural of esterification can occur with carboxylic acid.
- 2. aqueous tetrahydroabietic acid block urethane resin according to claim 1, which is characterized in that the R1For terminal hydroxy group Polyurethane structural.
- 3. aqueous tetrahydroabietic acid block urethane resin according to claim 2, which is characterized in that the R1Structural formula It is as follows：In formula, R2For isocyanates and poly-dihydric alcohol polyurethane structural obtained by the reaction, n is the integer more than or equal to zero.
- 4. aqueous tetrahydroabietic acid block urethane resin according to claim 3, which is characterized in that the poly-dihydric alcohol is Polyethylene glycol of the molecular weight between 200-2000.
- 5. aqueous tetrahydroabietic acid block urethane resin according to claim 3, which is characterized in that the isocyanates is Isophorone diisocyanate, hexamethylene diisocyanate, toluene di-isocyanate(TDI), methyl diphenylene diisocyanate or One kind in biuret polyisocyanate.
- 6. a kind of preparation method of aqueous tetrahydroabietic acid block urethane resin, is used to prepare such as claim 1-5 any one The aqueous tetrahydroabietic acid block urethane resin, which is characterized in that include the following steps：Poly-dihydric alcohol is subjected to vacuum dehydration processing；Above-mentioned poly-dihydric alcohol with isocyanates is mixed at normal temperatures, obtains polyurethane resin；Above-mentioned polyurethane resin with tetrahydroabietic acid is mixed, catalyst is added in, is evacuated to 0.1KPa, controlling reaction temperature and anti- Between seasonable, esterification occurs, generates aqueous tetrahydroabietic acid block urethane resin.
- 7. according to the method described in claim 6, it is characterized in that, the catalyst be phosphoric acid, polyphosphoric acids, organic sulfonic acid, One or more of sulfuric acid and tin laurate.
- 8. according to the method described in claim 6, it is characterized in that, reaction temperature control is at 120 DEG C -160 DEG C.
- 9. according to the method described in claim 6, it is characterized in that, the time control is reacted at -6.5 hours 4.5 hours.
- 10. application of the aqueous tetrahydroabietic acid block urethane resin in coating technique described in claim 1-5 any one, It is characterised in that it includes above-mentioned aqueous tetrahydroabietic acid block urethane resin is directly applied on plastic film, after drying with paper It opens or aluminizer bonds, obtain overlay film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810027041.8A CN108250397B (en) | 2018-01-11 | 2018-01-11 | Waterborne tetrahydroabietic acid-terminated polyurethane resin, preparation method and application thereof |
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| CN201810027041.8A CN108250397B (en) | 2018-01-11 | 2018-01-11 | Waterborne tetrahydroabietic acid-terminated polyurethane resin, preparation method and application thereof |
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| CN108250397B CN108250397B (en) | 2020-08-11 |
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