CN102796485A - Reactive polyurethane hot-melt adhesive and preparation method thereof - Google Patents
Reactive polyurethane hot-melt adhesive and preparation method thereof Download PDFInfo
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- CN102796485A CN102796485A CN2012103338345A CN201210333834A CN102796485A CN 102796485 A CN102796485 A CN 102796485A CN 2012103338345 A CN2012103338345 A CN 2012103338345A CN 201210333834 A CN201210333834 A CN 201210333834A CN 102796485 A CN102796485 A CN 102796485A
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- reactive polyurethane
- hot melt
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Abstract
The invention relates to a reactive polyurethane hot-melt adhesive and a preparation method thereof, particularly a moisture reactive hot-melt adhesive for edge sealing in furniture and construction industries and a preparation method thereof, belonging to the technical field of moisture reactive hot-melt adhesives. The preparation method comprises the following steps: taking polyalkaneneglycol, olefin unsaturated monomer polymer and tackifying resin, dehydrating in vacuum, adding isocyanate, reacting under normal pressure in a nitrogen atmosphere, and reacting in vacuum; and after the reaction finishes, and filling the product into a container made of aluminum, tin or composite film thereof, thereby obtaining the product reactive polyurethane hot-melt adhesive. The invention provides a moisture reactive hot-melt adhesive for edge sealing in furniture and construction industries and a preparation method thereof. The reactive hot-melt adhesive has excellent early strength, and excellent adhesive effect on edge sealing of low-surface-energy plastics.
Description
Technical field
The present invention relates to a kind of reactive polyurethane hot melt and preparation method thereof, particularly be used for moisture-reactive polyurethane hot-melt glue of furniture and building trade edge sealing and preparation method thereof, belong to moisture-reactive polyurethane hot-melt glue technical field.
Background technology
Reactive polyurethane hot melt is known for the people chief phase; It refers to the solvent-free tackiness agent that contains the carbamate group; At room temperature be solid-state; Use after the fusion at a certain temperature, in moisture, not only can cool off and solidify by physics, also can react and crosslinking curing through isocyanate groups and the aqueous vapor that exists.
Yet this reactive hot-melt has very big shortcoming.The edge sealing technology can be used plastics usually in furniture and the building trade, and when the surface energy of plastics was lower than 38 dyne, present known moisture-reactive polyurethane hot-melt glue did not have effect.When employed elasticity of plastics was big simultaneously, employed this hot melt adhesive can flick when edge sealing usually at present, and this phenomenon is based on reactive polyurethane hot melt can't satisfy the requirement of edge sealing process for the tackiness agent early strength under the technology status at present.
Summary of the invention
The purpose of this invention is to provide a kind of suitable reactive polyurethane hot melt, it overcomes existing technical disadvantages and has excellent initial intensity, and the edge sealing for the low surface energy plastics has remarkable bond effect simultaneously.
According to technical scheme provided by the invention; A kind of reactive polyurethane hot melt; Formula rate is following by weight: 10 ~ 40 parts of isocyanic ester, 30 ~ 60 parts of polyalkylene glycols, 10 ~ 30 parts in the polymkeric substance of olefines unsaturated monomer and verivate thereof, 5 ~ 15 parts of tackifying resins;
Get the polymkeric substance and the tackifying resin of polyalkylene glycol, olefines unsaturated monomer and verivate thereof; Under vacuum, dewater; Add isocyanic ester then; Normal pressure nitrogen down reaction continued adds in the vacuum and reacts, and after reaction finishes product is packed in the container of being processed by aluminium, tin or its composite package, promptly obtains the product reactive polyurethane hot melt.
Said isocyanic ester is one or both in tolylene diisocyanate, the methyl diphenylene diisocyanate.
Said methyl diphenylene diisocyanate is 4,4 '-2,4-methyl diphenylene diisocyanate, 2, the methyl diphenylene diisocyanate of 2 '-methyl diphenylene diisocyanate or carbodiimide modified.
Said polyalkylene glycol is oxyethane, 1,2 epoxy prapane, 1,2-butylene oxide ring, 2, one or more in 3-butylene oxide ring, THF or its polymkeric substance.
The molecular-weight average of said polyalkylene glycol is 1000 ~ 8000.
The polymkeric substance of said olefines unsaturated monomer and verivate thereof be ethene, vinyl acetate between to for plastic, vinyl propionate, vinylformic acid, methylacrylic acid, carbonatoms be 1 ~ 12 the basic acrylic acid alkyl fat of first (second) and in the polymkeric substance of one or more materials; Its melting index is 5 ~ 50.
Contain carbonyl in said olefines unsaturated monomer and the verivate thereof.
Said tackifying resin is one or more in the modified resin of Gum Rosin, terpenic phenolic modified resin, hydrocarbon resin or a-vinyl toluene.
Said reactive polyurethane hot melt, formula rate are following by weight: 15 ~ 25 parts of isocyanic ester, 35 ~ 50 parts of polyalkylene glycols, 15 ~ 25 parts in the polymkeric substance of olefines unsaturated monomer, 5 ~ 12 parts of tackifying resins.
The preparation method of said reactive polyurethane hot melt; Step is following by weight: get 30 ~ 60 parts of polyalkylene glycols; 10 ~ 30 parts in the polymkeric substance of olefines unsaturated monomer and verivate thereof, 5 ~ 15 parts of tackifying resins; Under 120 ~ 140 ℃ with the reactant of constant volume vacuum tightness 0 ~-0.1MPa under dehydration 120 ~ 150min, be cooled to 70 ~ 75 ℃; Getting isocyanic ester joins in the said mixture for 10 ~ 40 parts; Normal pressure reacts 40 ~ 45min under nitrogen protection; Mixture is inserted 0 ~-reaction 50 ~ 55min continued in the 0.1MPa vacuum; After reaction finishes product is packed in the container of being processed by aluminium, tin or its composite package, promptly obtain the product reactive polyurethane hot melt.
The present invention has following advantage: the reactive polyurethane hot melt according to method preparation of the present invention has overcome the insufficient drawback of existing reactive polyurethane hot melt tackiness agent early strength; A kind of moisture-reactive polyurethane hot-melt glue that is used for furniture and building trade edge sealing and preparation method thereof is provided; It has excellent initial intensity; Higher creep resistant, good is heat-resisting, moisture resistance properties.Edge sealing for the low surface energy plastics has remarkable bond effect simultaneously.
Embodiment
Embodiment 1
Get 30 parts of 1,2 epoxy prapanes, 5 parts of polymkeric substance, the terpenic phenolic modified resins of 2 parts of ethene and 8 parts of vinyl propionates, under 140 ℃ with the reactant of constant volume vacuum tightness 0 ~-the 0.1MPa 120min that dewaters down, be cooled to 75 ℃; Getting diphenylmethyl based isocyanate (MDI) joins in the said mixture for 10 parts; Normal pressure reacts 45min under nitrogen protection; Mixture is inserted 0 ~-reaction 50min continued in the 0.1MPa vacuum; After reaction finishes product is packed in the container of being processed by aluminium, tin or its composite package, promptly obtain the product reactive polyurethane hot melt.
Detection method:
Viscosity: with Brook field viscometer determining viscosity, rotor 27# to assigned temperature and preserved value 15 minutes, reads the pipe heating that hot melt adhesive is housed 20 minutes displayed value and is viscosity.
Measure NCO%: with sample and known, excessive Di-n-Butyl Amine reacts in acetone, returns with HCL then and drips to confirm NCO%.
Embodiment 2
Gather propyl group glycol (PPG 4000 DOW Chemicals) 200g
Elvaloy resin HP441 (Du Pont's chemistry) 100g
A-vinyl toluene monomer resin SA 100 (Arizona chemistry) 50g
Pure MDI Isonate (DOW Chemical) 75g
Get and gather propyl group glycol 200g, Elvaloy resin HP441 100g, a-vinyl toluene monomer resin SA 100 50g, under 120 ℃ with the reactant of constant volume vacuum tightness 0 ~-0.1MPa under dehydration 150min, be cooled to 70 ~ 72 ℃; Getting pure MDI Isonate 75g joins in the said mixture; Normal pressure reacts 42min under nitrogen protection; Mixture is inserted-continue reaction 55min in the 0.1MPa vacuum; After reaction finishes product is packed in the container of being processed by aluminium, tin or its composite package, promptly obtain the product reactive polyurethane hot melt.
Viscosity 17000mpa.s (140 ° of C)
NCO%?1.4%
Embodiment 3
Gather propyl group glycol (PPG 8000 DOW Chemicals) 250g
Elvaloy resin HP6611 (Du Pont's chemistry) 80g
A-vinyl toluene monomer resin SA 120 (Arizona chemistry) 70g
Pure MDI Isonate (DOW Chemical) 95g
Get and gather propyl group glycol 250g, Elvaloy resin HP6611 80g, a-vinyl toluene monomer resin SA 120 70g, under 130 ℃ with the reactant of the constant volume 130min that under vacuum tightness-0.1MPa, dewaters, be cooled to 72 ℃; Getting pure MDI Isonate 95g joins in the said mixture; Normal pressure reacts 42min under nitrogen protection; Mixture is inserted 0 ~-reaction 53min continued in the 0.1MPa vacuum; After reaction finishes product is packed in the container of being processed by aluminium, tin or its composite package, promptly obtain the product reactive polyurethane hot melt.
Viscosity 23500mpa.s (140 ° of C)
NCO%?0.9%。
Claims (9)
1. a reactive polyurethane hot melt is characterized in that formula rate is following by weight: 10 ~ 40 parts of isocyanic ester, 30 ~ 60 parts of polyalkylene glycols, 10 ~ 30 parts in the polymkeric substance of olefines unsaturated monomer and verivate thereof, 5 ~ 15 parts of tackifying resins;
Get the polymkeric substance and the tackifying resin of polyalkylene glycol, olefines unsaturated monomer and verivate thereof; Under vacuum, dewater; Add isocyanic ester then; Normal pressure nitrogen down reaction continued adds in the vacuum and reacts, and after reaction finishes product is packed in the container of being processed by aluminium, tin or its composite package, promptly obtains the product reactive polyurethane hot melt.
2. reactive polyurethane hot melt according to claim 1, it is characterized in that: said isocyanic ester is one or both in tolylene diisocyanate, the methyl diphenylene diisocyanate.
3. like the said reactive polyurethane hot melt of claim 2; It is characterized in that: said methyl diphenylene diisocyanate is 4; 4 '-2,4-methyl diphenylene diisocyanate, 2, the methyl diphenylene diisocyanate of 2 '-methyl diphenylene diisocyanate or carbodiimide modified.
4. reactive polyurethane hot melt according to claim 1, it is characterized in that: said polyalkylene glycol is oxyethane, 1,2 epoxy prapane, 1,2-butylene oxide ring, 2, one or more in 3-butylene oxide ring, THF or its polymkeric substance.
5. reactive polyurethane hot melt according to claim 1, it is characterized in that: the molecular-weight average of said polyalkylene glycol is 1000 ~ 8000.
6. reactive polyurethane hot melt according to claim 1 is characterized in that: the polymkeric substance of said olefines unsaturated monomer and verivate thereof is that ethene, vinyl acetate between to for plastic, vinyl propionate, vinylformic acid, methylacrylic acid, carbonatoms are the polymkeric substance of one or more materials in 1 ~ 12 the basic acrylic acid alkyl fat of first (second); Its melting index is 5 ~ 50.
7. reactive polyurethane hot melt according to claim 1 is characterized in that: said tackifying resin is one or more in the modified resin of Gum Rosin, terpenic phenolic modified resin, hydrocarbon resin or a-vinyl toluene.
8. reactive polyurethane hot melt according to claim 1 is characterized in that formula rate is following by weight: 15 ~ 25 parts of isocyanic ester, 35 ~ 50 parts of polyalkylene glycols, 15 ~ 25 parts in the polymkeric substance of olefines unsaturated monomer, 5 ~ 12 parts of tackifying resins.
9. the preparation method of the said reactive polyurethane hot melt of claim 1; It is characterized in that step is following by weight: get 30 ~ 60 parts of polyalkylene glycols; 10 ~ 30 parts in the polymkeric substance of olefines unsaturated monomer and verivate thereof, 5 ~ 15 parts of tackifying resins; Under 120 ~ 140 ℃ with the reactant of constant volume vacuum tightness 0 ~-0.1MPa under dehydration 120 ~ 150min, be cooled to 70 ~ 75 ℃; Getting isocyanic ester joins in the said mixture for 10 ~ 40 parts; Normal pressure reacts 40 ~ 45min under nitrogen protection; Mixture is inserted 0 ~-reaction 50 ~ 55min continued in the 0.1MPa vacuum; After reaction finishes product is packed in the container of being processed by aluminium, tin or its composite package, promptly obtain the product reactive polyurethane hot melt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103338345A CN102796485A (en) | 2012-09-11 | 2012-09-11 | Reactive polyurethane hot-melt adhesive and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012103338345A CN102796485A (en) | 2012-09-11 | 2012-09-11 | Reactive polyurethane hot-melt adhesive and preparation method thereof |
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| CN102796485A true CN102796485A (en) | 2012-11-28 |
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| CN2012103338345A Pending CN102796485A (en) | 2012-09-11 | 2012-09-11 | Reactive polyurethane hot-melt adhesive and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103045154A (en) * | 2013-01-21 | 2013-04-17 | 无锡市万力粘合材料有限公司 | Polyurethane hot melt adhesive for carpentry coating and preparation method thereof |
| CN103881595A (en) * | 2014-03-13 | 2014-06-25 | 魏根成 | Hot-melt adhesive film for plywood and preparation method thereof |
| CN106893063A (en) * | 2017-05-04 | 2017-06-27 | 无锡市万力粘合材料股份有限公司 | A kind of no-solvent type mirror surface leather and preparation method thereof |
| CN107254028A (en) * | 2017-06-09 | 2017-10-17 | 重庆市恒安化工有限公司 | Novel alkyl phenol resin viscosified for polyurethane adhesive and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10114859A (en) * | 1996-10-09 | 1998-05-06 | Sanyo Chem Ind Ltd | Composite resin composition and reactive hot melt adhesive |
| CN1437623A (en) * | 2000-04-21 | 2003-08-20 | 国家淀粉及化学投资控股公司 | Polyurethane hot melt adhesives with acrylic copolymers and thermoplastic resins |
| CN1594481A (en) * | 2004-06-24 | 2005-03-16 | 淄博海特曼化工有限公司 | Solvent-free high-strength polyurethane cementing sealing glue and method for making same |
| US20060084755A1 (en) * | 2004-10-19 | 2006-04-20 | Good David J | Reactive hot melt adhesive with block acrylic copolymer |
-
2012
- 2012-09-11 CN CN2012103338345A patent/CN102796485A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10114859A (en) * | 1996-10-09 | 1998-05-06 | Sanyo Chem Ind Ltd | Composite resin composition and reactive hot melt adhesive |
| CN1437623A (en) * | 2000-04-21 | 2003-08-20 | 国家淀粉及化学投资控股公司 | Polyurethane hot melt adhesives with acrylic copolymers and thermoplastic resins |
| CN1594481A (en) * | 2004-06-24 | 2005-03-16 | 淄博海特曼化工有限公司 | Solvent-free high-strength polyurethane cementing sealing glue and method for making same |
| US20060084755A1 (en) * | 2004-10-19 | 2006-04-20 | Good David J | Reactive hot melt adhesive with block acrylic copolymer |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103045154A (en) * | 2013-01-21 | 2013-04-17 | 无锡市万力粘合材料有限公司 | Polyurethane hot melt adhesive for carpentry coating and preparation method thereof |
| CN103881595A (en) * | 2014-03-13 | 2014-06-25 | 魏根成 | Hot-melt adhesive film for plywood and preparation method thereof |
| CN103881595B (en) * | 2014-03-13 | 2015-08-19 | 魏根成 | A kind of glued board melt viscosity agent film and preparation method thereof |
| CN106893063A (en) * | 2017-05-04 | 2017-06-27 | 无锡市万力粘合材料股份有限公司 | A kind of no-solvent type mirror surface leather and preparation method thereof |
| CN106893063B (en) * | 2017-05-04 | 2020-04-03 | 无锡市万力粘合材料股份有限公司 | Solvent-free mirror leather and preparation method thereof |
| CN107254028A (en) * | 2017-06-09 | 2017-10-17 | 重庆市恒安化工有限公司 | Novel alkyl phenol resin viscosified for polyurethane adhesive and preparation method thereof |
| CN107254028B (en) * | 2017-06-09 | 2019-05-21 | 重庆市恒安化工有限公司 | Alkyl phenol resin and preparation method thereof for polyurethane adhesive thickening |
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Application publication date: 20121128 |