CN104449539A - Water-based polyurethane adhesive and preparation method thereof - Google Patents
Water-based polyurethane adhesive and preparation method thereof Download PDFInfo
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- CN104449539A CN104449539A CN201410752323.6A CN201410752323A CN104449539A CN 104449539 A CN104449539 A CN 104449539A CN 201410752323 A CN201410752323 A CN 201410752323A CN 104449539 A CN104449539 A CN 104449539A
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Abstract
The invention discloses a water-based polyurethane adhesive and a preparation method thereof, relating to a high-molecular compound obtained in reaction, in which an ether bond is formed in a high-molecular main chain. The water-based polyurethane adhesive disclosed by the invention is used for solving the problems of being great in smell, easy to volatilize and severe in environmental pollution in the existing polyurethane adhesive. The water-based polyurethane adhesive disclosed by the invention is prepared from the following components in parts by weight: 100-300 parts of polyether polyol, 15-80 parts of isocyanate, 10-45 parts of chain extender, 10-40 parts of dimethylolpropionic acid, 15-45 parts of N-methyl-pyrrolidinone, and 5-20 parts of triethylamine. The water-based polyurethane adhesive prepared by the invention is safe, environment-friendly and healthy.
Description
Technical field
The present invention relates to a kind of macromolecular compound be obtained by reacting forming ehter bond in high polymer main chain, specifically, relate to a kind of Aqueous Polyurethane Adhesives and preparation method thereof.
Background technology
The advantages such as adhesive for polyurethane has the performances such as soft durometer, and controllability is good, low temperature resistant, and snappiness is good, and bonding strength is large, can bonded metal, the multiple material such as nonmetal, and purposes is more and more wider.But, at present in whole adhesive for polyurethane field based on solvent borne polyurethane sizing agent, its shortcoming is that organic solvent smell is large, volatile, cause during use atmospheric pollution, inflammable, more or less there is toxicity etc.Along with awareness of safety and the environmental consciousness enhancing of people, polyurethane material researchist in various countries' spends sizable energy to carry out the R and D of Aqueous Polyurethane Adhesives in recent years.
Aqueous polyurethane is the binary colloidal system that a kind of polyurethane particles is scattered in water.Aqueous polyurethane is medium with water, have safety, do not burn, non-harmful particular advantages.Coating, tackiness agent, hide finishes, textile auxiliary agent, paper industry auxiliary agent and electronic material etc. and Application Areas is widely used as also in continuous expansion in some country.Because the over-all properties of Aqueous Polyurethane Adhesives is superior, be subject to domestic and international extensive concern in recent years, the development research of high-performance water-based polyurethane sizing agent becomes hot subject.
Summary of the invention
For solving the problem, the invention provides the Aqueous Polyurethane Adhesives and preparation method thereof of a kind of safety, environmental protection.
Aqueous Polyurethane Adhesives of the present invention, is prepared from by the component of following weight part: polyether glycol 100 ~ 300 parts, isocyanic ester 15 ~ 80 parts, chainextender 10 ~ 45 parts, dimethylol propionic acid 0.5 ~ 5 part, N-Methyl pyrrolidone 15 ~ 45 parts, triethylamine 5 ~ 20 parts.
Preferably, described polyether glycol is by ethylene glycol or propylene glycol as initiator, and obtain with propylene oxide reaction, molecular weight is 1000-3000, and hydroxyl value is 35-120.
Preferably, described isocyanic ester is ditan-4,4 vulcabond.
Preferably, described chainextender is glycol ether.
Aqueous Polyurethane Adhesives adopts following method steps to obtain:
(1) polyether glycol is dewatered: heat up 120 ~ 140 DEG C, dehydrated under vacuum 1 ~ 2 hour;
(2) temperature is down to 60 ~ 70 DEG C, the polyether glycol after dehydration and isocyanate reaction 1 hour, obtained prepolymer;
(3) the N-Methyl pyrrolidone solution being dissolved with dimethylol propionic acid is added drop-wise in (2), control temperature 70 ~ 80 DEG C, reacts 1 hour, DMPA content 3% ~ 8% used;
(4) add small molecule chain extender glycol ether at 70 ~ 80 DEG C and react 1 hour, stop heating, obtained performed polymer;
(5) added by performed polymer under normal temperature in the water being dissolved with triethylamine and disperse, emulsification obtains aqueous polyurethane dispersion.
Compared with prior art, the invention has the beneficial effects as follows:
(1) preparation method is scientific and reasonable, simple possible;
(2) obtained product safety, nontoxic, nonflammable, environmental pollution is little;
(3) obtained product excellent property in low temperature resistant, snappiness, cohesiveness etc.
Embodiment
Below in conjunction with embodiment, the present invention is further explained:
Embodiment 1
A kind of Aqueous Polyurethane Adhesives, is prepared from by the component of following weight part:
Polyether glycol 100 parts, ditan-4,4 vulcabond (MDI) 25 parts, chainextender glycol ether (DEG): 20 parts, dimethylol propionic acid (DMPA) 1 part, N-Methyl pyrrolidone (NMP) 20 parts, triethylamine 10 parts.
Polyether glycol is by ethylene glycol or propylene glycol as initiator, and obtain with propylene oxide reaction, molecular weight is 1000-3000, and hydroxyl value is 35-120.
Its preparation method is:
(1) first to heat up 120 DEG C of dehydrated under vacuum 2h to polyether glycol, moisture content is less than 0.5%;
(2) stop vacuumizing, be cooled to 60 DEG C in a nitrogen environment, add MDI and react 1h;
(3) the N-Methyl pyrrolidone solution being dissolved with dimethylol propionic acid is dripped, temperature control 70 DEG C, reaction 1h;
(4) add small molecule chain extender DEG at 70 ~ 80 DEG C and react 1h, stop heating;
(5) added by performed polymer under normal temperature in the water being dissolved with triethylamine and disperse, high-speed stirring emulsification pretreatment obtains aqueous polyurethane dispersion.
Embodiment 2
A kind of Aqueous Polyurethane Adhesives, is prepared from by the component of following weight part:
Polyether glycol 200 parts, ditan-4,4 vulcabond 50 parts, chainextender glycol ether: 40 parts, dimethylol propionic acid 1.5 parts, N-Methyl pyrrolidone 30 parts, triethylamine 15 parts.
Polyether glycol is by ethylene glycol or propylene glycol as initiator, and obtain with propylene oxide reaction, molecular weight is 1000-3000, and hydroxyl value is 35-120.
Its preparation method is:
(1) first to heat up 130 DEG C of dehydrated under vacuum 2h to polyether glycol, moisture content is less than 0.5%;
(2) stop vacuumizing, be cooled to 70 DEG C in a nitrogen environment, add MDI and react 1h;
(3) the N-Methyl pyrrolidone solution being dissolved with dimethylol propionic acid is dripped, temperature control 80 DEG C, reaction 1h;
(4) add small molecule chain extender reaction 1h at 70 ~ 80 DEG C, stop heating;
(5) added by performed polymer under normal temperature in the water being dissolved with triethylamine and disperse, high-speed stirring emulsification pretreatment obtains aqueous polyurethane dispersion.
Embodiment 3
A kind of Aqueous Polyurethane Adhesives, is prepared from by the component of following weight part:
Polyether glycol 100 parts, ditan-4,4 vulcabond 75 parts, chainextender glycol ether: 45 parts, dimethylol propionic acid 1.8 parts, N-Methyl pyrrolidone (NMP) 35 parts, triethylamine 20 parts.
Polyether glycol is by ethylene glycol or propylene glycol as initiator, and obtain with propylene oxide reaction, molecular weight is 1000-3000, and hydroxyl value is 35-120.
Its preparation method is:
(1) first to heat up 140 DEG C of dehydrated under vacuum 1h to polyether glycol, moisture content is less than 0.5%;
(2) stop vacuumizing, be cooled to 65 DEG C in a nitrogen environment, add MDI and react 1h;
(3) the N-Methyl pyrrolidone solution being dissolved with dimethylol propionic acid is dripped, temperature control 70 DEG C, reaction 1h;
(4) add small molecule chain extender reaction 1h at 70 ~ 80 DEG C, stop heating;
(5) added by performed polymer under normal temperature in the water being dissolved with triethylamine and disperse, high-speed stirring emulsification pretreatment obtains aqueous polyurethane dispersion.
Claims (7)
1. an Aqueous Polyurethane Adhesives, is characterized in that, is prepared from by the component of following weight part: polyether glycol 100 ~ 300 parts, isocyanic ester 15 ~ 80 parts, chainextender 10 ~ 45 parts, dimethylol propionic acid 10 ~ 40 parts, N-Methyl pyrrolidone 15 ~ 45 parts, triethylamine 5 ~ 20 parts.
2. Aqueous Polyurethane Adhesives according to claim 1, is characterized in that, described polyether glycol is by ethylene glycol or propylene glycol as initiator, and obtain with propylene oxide reaction, molecular weight is 1000-3000, and hydroxyl value is 35-120.
3. Aqueous Polyurethane Adhesives according to claim 1, is characterized in that, described isocyanic ester is ditan-4,4 vulcabond.
4. Aqueous Polyurethane Adhesives according to claim 1, is characterized in that, described chainextender is glycol ether.
5. the preparation method of Aqueous Polyurethane Adhesives according to the arbitrary claim of Claims 1 to 4, is characterized in that, comprise the following steps:
(1) polyether glycol is dewatered;
(2) by the polyether glycol after dehydration and isocyanate reaction, obtained prepolymer;
(3) the N-Methyl pyrrolidone solution being dissolved with dimethylol propionic acid is added drop-wise to reaction in (2);
(4) add small molecule chain extender glycol ether and react to obtain performed polymer;
(5) added by performed polymer in the water being dissolved with triethylamine and disperse, emulsification obtains aqueous polyurethane dispersion.
6. the preparation method of Aqueous Polyurethane Adhesives according to claim 5, it is characterized in that, step (1), at 120 ~ 140 DEG C, is carried out under vacuum condition.
7. the preparation method of Aqueous Polyurethane Adhesives according to claim 5, it is characterized in that, step (2), (3), (4) are carried out at 60 ~ 80 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410752323.6A CN104449539A (en) | 2014-12-09 | 2014-12-09 | Water-based polyurethane adhesive and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410752323.6A CN104449539A (en) | 2014-12-09 | 2014-12-09 | Water-based polyurethane adhesive and preparation method thereof |
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| CN104449539A true CN104449539A (en) | 2015-03-25 |
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| CN201410752323.6A Pending CN104449539A (en) | 2014-12-09 | 2014-12-09 | Water-based polyurethane adhesive and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107267107A (en) * | 2017-05-29 | 2017-10-20 | 北华大学 | A kind of preparation method of environment-friendly water-based polyurethane adhesive |
| CN109306256A (en) * | 2017-07-26 | 2019-02-05 | 刘若慧 | Aqueous Polyurethane Adhesives and preparation method thereof |
| TWI705095B (en) * | 2015-09-08 | 2020-09-21 | 德商漢高股份有限及兩合公司 | Cold seal adhesives based on aqueous polyurethane dispersions |
| CN113736062A (en) * | 2021-09-14 | 2021-12-03 | 烟台宜彬新材料科技有限公司 | Waterborne polyurethane emulsion for nylon fastener tape and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002155260A (en) * | 2000-09-11 | 2002-05-28 | Toppan Printing Co Ltd | Adhesive for dry lamination and laminated package material using the same |
| CN103073692A (en) * | 2013-01-31 | 2013-05-01 | 烟台前进化工有限公司 | Producing method of water-base polyurethane |
-
2014
- 2014-12-09 CN CN201410752323.6A patent/CN104449539A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002155260A (en) * | 2000-09-11 | 2002-05-28 | Toppan Printing Co Ltd | Adhesive for dry lamination and laminated package material using the same |
| CN103073692A (en) * | 2013-01-31 | 2013-05-01 | 烟台前进化工有限公司 | Producing method of water-base polyurethane |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI705095B (en) * | 2015-09-08 | 2020-09-21 | 德商漢高股份有限及兩合公司 | Cold seal adhesives based on aqueous polyurethane dispersions |
| CN107267107A (en) * | 2017-05-29 | 2017-10-20 | 北华大学 | A kind of preparation method of environment-friendly water-based polyurethane adhesive |
| CN109306256A (en) * | 2017-07-26 | 2019-02-05 | 刘若慧 | Aqueous Polyurethane Adhesives and preparation method thereof |
| CN113736062A (en) * | 2021-09-14 | 2021-12-03 | 烟台宜彬新材料科技有限公司 | Waterborne polyurethane emulsion for nylon fastener tape and preparation method thereof |
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Application publication date: 20150325 |
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