CN105219317A - A kind of medical polyacrylate pressure-sensitive adhesive of environmental protection sticks agent - Google Patents
A kind of medical polyacrylate pressure-sensitive adhesive of environmental protection sticks agent Download PDFInfo
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- CN105219317A CN105219317A CN201510770921.0A CN201510770921A CN105219317A CN 105219317 A CN105219317 A CN 105219317A CN 201510770921 A CN201510770921 A CN 201510770921A CN 105219317 A CN105219317 A CN 105219317A
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Abstract
The present invention relates to a kind of medical pressure-sensing gluing agent of environmental protection, it comprises soft monomer, hard monomer, functional monomer, tackifying resin, initiator, the compound containing epoxide group, solvent, and the second-order transition temperature of wherein said soft monomer is-65 to-70 DEG C.Wherein soft monomer can be ethyl propenoate, butyl acrylate, Isooctyl acrylate monomer, ethyl acrylate etc., hard monomer can be methyl methacrylate, methyl acrylate, vinylbenzene, vinyl-acetic ester, vinyl cyanide etc., compound containing epoxide group can be propylene oxide, butylene oxide ring, propanepoxy resin, four phenolic group epoxy resin, naphthols novolac epoxy resin, vinyl cyclohexene dioxide epoxy resin etc., and solvent can be ethyl acetate, normal hexane, heptane, methyl alcohol, Virahol, butanone etc.Product of the present invention can be used for medicine and hygiene fields.
Description
Technical field
The present invention relates to a kind of medical pressure-sensitive adhesive agent, belong to polymeric material field.
Background technology
Pressure-sensitive adhesive agent is the sizing agent that a class just can bond with adherend at external force slighter compress, have sticky easily, to take off be not difficult, shell and the character of not damaging, also referred to as non-setting adhesive, become the product that in sizing agent, consumption is maximum, range of application is the widest with the performance of its uniqueness and feature, its goods almost spread all over the every field such as packaging, automobile, transport, communication, electrical equipment, building materials, machinery, aviation, light industry, health.Wherein, simple, bonding scope is wide, weathering resistance is good, photostabilization is strong, oil-proofness is excellent owing to filling a prescription for polyacrylate(s) pressure sensitive adhesive, water-tolerant, do not exist and be separated and the phenomenon such as migration, and it is easy to operate, the reasons such as price is lower, become main products with fastest developing speed in pressure sensitive adhesive, its goods comprise pressure-sensitive tape, pressure-sensitive adhesive label paper and pressure-sensitive adhesive sheet etc., and medical adhesive tape is important product category.
Polyacrylate pressure-sensitive sticks agent can be divided into solvent-borne type, emulsion-type, hot-melting type, water-soluble etc., wherein solvent type polyacrylate pressure-sensitive adhesive agent (solventbasedacrylicpressuresensitiveadhesive) is common one, and it carries out radical polymerization in organic solvent by acrylate monomer and obtains glutinous thick liquid, adds or do not add other additives and formed.The agent of solvent type polyacrylate pressure-sensitive adhesive has that wettability is good, initial bonding strength is large, drying rate is fast, water tolerance and the plurality of advantages such as lower temperature resistance is good, is widely used in the fields such as medical adhesive tape, Pressuresensitive Label and double sticky tape.The main drawback of solvent type polyacrylate pressure-sensitive adhesive agent to be in formula and manufacturing process with an organic solvent, can pollute environment and goods, in today that environmental requirement improves constantly, it is made to be difficult to be applied to the fields such as automobile, aircraft, food and medical label, sanitary material.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, provide a kind of medical polyacrylate pressure-sensitive adhesive of environmental protection to stick agent.
The medical polyacrylate pressure-sensitive adhesive that present invention also offers a kind of environmental protection sticks the preparation method of agent.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of medical polyacrylate pressure-sensitive adhesive of environmental protection sticks agent, it is characterized in that, this pressure-sensitive adhesive agent comprises soft monomer, hard monomer, functional monomer, tackifying resin, initiator, the compound containing epoxide group, solvent, and the second-order transition temperature of wherein said soft monomer is-65 to-70 DEG C.
Stick in agent at the medical polyacrylate pressure-sensitive adhesive of described environmental protection, preferred described soft monomer is one or more the mixture in ethyl propenoate, butyl acrylate, Isooctyl acrylate monomer, ethyl acrylate.
Stick in agent at the medical polyacrylate pressure-sensitive adhesive of described environmental protection, preferred described hard monomer is one or more the mixture in methyl methacrylate, methyl acrylate, vinylbenzene, vinyl-acetic ester, vinyl cyanide.
Stick in agent at the medical polyacrylate pressure-sensitive adhesive of described environmental protection, preferred described functional monomer is one or more the mixture in vinylformic acid, methacrylic acid, Hydroxyethyl acrylate, Propylene glycol monoacrylate, Rocryl 410, Dimethylaminoethyl Methacrylate, acrylamide, maleic anhydride.
Stick in agent at the medical polyacrylate pressure-sensitive adhesive of described environmental protection, preferred described tackifying resin is one or more the mixture in rosin, polymerized rosin, esterase, rosin pentaerythritol ester, hydrogenated rosin glyceride, terpine resin.
Stick in agent at the medical polyacrylate pressure-sensitive adhesive of described environmental protection, preferred described initiator is one or more the mixture in dibenzoyl peroxide, dicumyl peroxide, peroxidized t-butyl perbenzoate, peroxydicarbonate or N, N-dihydroxyalkyl para-totuidine.
Stick in agent at the medical polyacrylate pressure-sensitive adhesive of described environmental protection, preferably the described compound containing epoxide group can be one or more the mixture in propylene oxide, butylene oxide ring, propanepoxy resin, four phenolic group epoxy resin, naphthols novolac epoxy resin, vinyl cyclohexene dioxide epoxy resin.
Stick in agent at the medical polyacrylate pressure-sensitive adhesive of described environmental protection, preferred described solvent is one or more the mixture in ethyl acetate, normal hexane, heptane, methyl alcohol, Virahol, butanone.
Stick in agent at the medical polyacrylate pressure-sensitive adhesive of described environmental protection, each component is with the consumption of parts by weight is respectively 30-60 part soft monomer, 10-25 part hard monomer, 5-10 part functional monomer, 5-15 part tackifying resin, 0.01-0.5 part initiator, 1-5 part contain epoxide group compound, 20-40 part solvent;
Preferred 35-50 part soft monomer, 10-20 part hard monomer, 5-7 part functional monomer, 8-12 part tackifying resin, 0.01-0.1 part initiator, 1-3 part contain compound, 25-35 part solvent of epoxide group;
More preferably 40-50 part soft monomer, 15-20 part hard monomer, 6-7 part functional monomer, 10-12 part tackifying resin, 0.01-0.1 part initiator, 1-3 part contain compound, 25-30 part solvent of epoxide group;
Most preferably 40-45 part soft monomer, 15-18 part hard monomer, 6-7 part functional monomer, 10-11 part tackifying resin, 0.05-0.1 part initiator, 1-2 part contain compound, 28-30 part solvent of epoxide group.
Stick in agent at medical polyacrylate pressure-sensitive adhesive of the present invention, each component, by mutually acting synergistically, enhances effect of sizing agent, obtains the sizing agent of good quality of the present invention.Wherein the polymkeric substance of soft monomer provides the visco-elasticity of sizing agent, determines tack height and the clinging power size of sizing agent; The polymkeric substance of hard monomer is comparatively hard, can improve the force of cohesion of sizing agent; For sizing agent molecular chain provides functional functional group after functional monomer participates in copolymerization, to make sizing agent molecule can produce crosslinked with the material such as urethane, organic metal chelate complex, improve clinging power and the force of cohesion of sizing agent.Compound containing epoxide group can react with organic solvent molecule, thus to reduce in goods residual solvent to the pollution of environment.In addition, second-order transition temperature T
gthe important references index of design sizing agent formula, T
glow, sizing agent molecule is soft, is easy to moistening adherend, and tack is strong, but T
gtoo low, then multipolymer is too soft, easily cannot normally use because of gummosis.The present invention optimizes the T of soft monomer in pressure-sensitive adhesive agent
gat-65 to-70 DEG C, make sizing agent also can obtain the initial bonding strength met the demands when solvent load is less, the solvent load indirectly reduced, realizes the object of environmental protection.
The preparation method that the medical polyacrylate pressure-sensitive adhesive of environmental protection of the present invention sticks agent is:
Each component of corresponding weight is prepared by formula, soft monomer is slowly warming up between 70 DEG C to 90 DEG C, again the mixture that hard monomer, functional monomer, initiator stir slowly is instilled in soft monomer, drip off in 2 hours, continue back flow reaction 3 hours afterwards, be cooled to 50 DEG C, add the mixture of tackifying resin, compound containing epoxide group, solvent, be incubated discharging after 2 hours, coated article post-heating is to 130-140 DEG C and be incubated 1-2 minute.
Compared with prior art, the medical polyacrylate pressure-sensitive adhesive of gained environmental protection of the present invention sticks the advantage of agent and is:
(1) organic solvent usage quantity is little, reduces the pollution to environment, has good environmental protection character;
(2) by selecting, there is specific T
greaction raw materials, the initial bonding strength making sizing agent not need too much solvent to obtain to meet the demands and other adhesiveproperties, decrease the usage quantity of organic solvent indirectly;
(3) by using the compound containing epoxide group to consume solvent, reduce further the disadvantageous effect of organic solvent to environment.
Embodiment
In order to deepen the understanding of the present invention, below in conjunction with embodiment, the invention will be further described.
Embodiment 1
The medical polyacrylate pressure-sensitive adhesive preparing environmental protection by aforementioned preparation method of the present invention sticks agent, and wherein with weight parts, soft monomer is 20 parts of ethyl propenoates, 15 parts of butyl acrylates, 10 parts of ethyl acrylates, its T
gfor-70 DEG C, hard monomer is 10 parts of methyl methacrylates, 5 parts of methyl acrylates, functional monomer is 3 parts of methacrylic acids, 2 parts of Hydroxyethyl acrylates, 2 parts of acrylamides, initiator is 0.03 part of dibenzoyl peroxide, 0.02 part of dicumyl peroxide, tackifying resin is 3 parts of esterases, 2 parts of rosin pentaerythritol esters, 5 parts of terpine resins, compound containing epoxide group is 1 part of propylene oxide, 0.5 part of butylene oxide ring, and solvent is 20 parts of ethyl acetate, 5 parts of methyl alcohol, 5 parts of Virahols.Prepare the properties of rear test products.
Embodiment 2
The medical polyacrylate pressure-sensitive adhesive preparing environmental protection by aforementioned preparation method of the present invention sticks agent, and wherein with weight parts, soft monomer is 20 parts of ethyl propenoates, 15 parts of Isooctyl acrylate monomers, 10 parts of ethyl acrylates, its T
gfor-68 DEG C, hard monomer is 10 parts of methyl methacrylates, 5 parts of vinylbenzene, functional monomer is 3 parts of methacrylic acids, 2 parts of Hydroxyethyl acrylates, 2 parts of maleic anhydrides, initiator is 0.03 part of dibenzoyl peroxide, 0.02 part of peroxidized t-butyl perbenzoate, tackifying resin is 5 parts of esterases, 5 parts of terpine resins, compound containing epoxide group is 1 part of propylene oxide, 0.5 part of butylene oxide ring, and solvent is 20 parts of ethyl acetate, 5 parts of methyl alcohol, 5 parts of Virahols.Prepare the properties of rear test products.
Embodiment 3
The medical polyacrylate pressure-sensitive adhesive preparing environmental protection by aforementioned preparation method of the present invention sticks agent, and wherein with weight parts, soft monomer is 20 parts of butyl acrylates, 15 parts of Isooctyl acrylate monomers, 10 parts of ethyl acrylates, its T
gfor-66 DEG C, hard monomer is 5 parts of methyl methacrylates, 10 parts of vinylbenzene, functional monomer is 2 parts of methacrylic acids, 3 parts of Hydroxyethyl acrylates, 2 parts of acrylamides, initiator is 0.03 part of dibenzoyl peroxide, 0.02 part of dicumyl peroxide, tackifying resin is 5 parts of esterases, 2 parts of rosin pentaerythritol esters, 3 parts of terpine resins, compound containing epoxide group is 1 part of propylene oxide, 0.5 part of butylene oxide ring, and solvent is 20 parts of ethyl acetate, 5 parts of methyl alcohol, 5 parts of Virahols.Prepare the properties of rear test products.
Embodiment 4
The medical polyacrylate pressure-sensitive adhesive preparing environmental protection by aforementioned preparation method of the present invention sticks agent, and wherein with weight parts, soft monomer is 15 parts of ethyl propenoates, 10 parts of butyl acrylates, 10 parts of different monooctyl esters of propylene, 10 parts of ethyl acrylates, its T
gfor-65 DEG C, hard monomer is 10 parts of methyl acrylates, 5 parts of vinyl-acetic esters, functional monomer is 3 parts of Hydroxyethyl acrylates, 2 parts of acrylamides, 2 parts of maleic anhydrides, initiator is 0.03 part of dicumyl peroxide, 0.01 part of peroxidized t-butyl perbenzoate, tackifying resin is 5 parts of esterases, 5 parts of rosin pentaerythritol esters, compound containing epoxide group is 1 part of propylene oxide, 0.5 part of butylene oxide ring, and solvent is 20 parts of ethyl acetate, 5 parts of methyl alcohol, 5 parts of Virahols.Prepare the properties of rear test products.
Embodiment 5
The medical polyacrylate pressure-sensitive adhesive preparing environmental protection by aforementioned preparation method of the present invention sticks agent, and wherein with weight parts, soft monomer is 10 parts of ethyl propenoates, 15 parts of butyl acrylates, 10 parts of different monooctyl esters of propylene, 10 parts of ethyl acrylates, its T
gfor-68 DEG C, hard monomer is 5 parts of methyl acrylates, 10 parts of vinyl-acetic esters, functional monomer is 2 parts of Hydroxyethyl acrylates, 2 parts of acrylamides, 3 parts of maleic anhydrides, initiator is 0.02 part of dibenzoyl peroxide, 0.03 part of dicumyl peroxide, tackifying resin is 5 parts of rosin pentaerythritol esters, 5 parts of terpine resins, compound containing epoxide group is 1 part of propylene oxide, 0.5 part of butylene oxide ring, and solvent is 20 parts of ethyl acetate, 5 parts of methyl alcohol, 5 parts of Virahols.Prepare the properties of rear test products.
Comparative example 1
The medical polyacrylate pressure-sensitive adhesive preparing environmental protection by aforementioned preparation method of the present invention sticks agent, and wherein with weight parts, soft monomer is 30 parts of ethyl propenoates, 15 parts of butyl acrylates, its T
gfor-35 DEG C, hard monomer is 10 parts of methyl methacrylates, 5 parts of methyl acrylates, functional monomer is 3 parts of methacrylic acids, 2 parts of Hydroxyethyl acrylates, 2 parts of acrylamides, initiator is 0.03 part of dibenzoyl peroxide, 0.02 part of dicumyl peroxide, tackifying resin is 5 parts of esterases, 5 parts of terpine resins, compound containing epoxide group is 1 part of propylene oxide, 0.5 part of butylene oxide ring, and solvent is 20 parts of ethyl acetate, 15 parts of methyl alcohol, 15 parts of Virahols.Prepare the properties of rear test products.
Comparative example 2
The medical polyacrylate pressure-sensitive adhesive preparing environmental protection by aforementioned preparation method of the present invention sticks agent, and wherein with weight parts, soft monomer is 20 parts of butyl acrylates, 15 parts of Isooctyl acrylate monomers, 10 parts of ethyl acrylates, its T
gfor-66 DEG C, hard monomer is 10 parts of methyl methacrylates, 5 parts of methyl acrylates, functional monomer is 3 parts of methacrylic acids, 2 parts of Hydroxyethyl acrylates, 2 parts of acrylamides, initiator is 0.03 part of dibenzoyl peroxide, 0.02 part of dicumyl peroxide, tackifying resin is 5 parts of esterases, 5 parts of terpine resins, solvent is 20 parts of ethyl acetate, 5 parts of methyl alcohol, 5 parts of Virahols, does not use the compound containing epoxide group.Prepare the properties of rear test products.
In embodiment 1-5 (EX1-EX5) and comparative example 1-2 (CEX1-CEX2), the outward appearance of glue is observed by range estimation, initial bonding strength is tested according to GB/T4852-2002,180 ° of peeling forces are tested according to GB/T2792-1998, and hold tack is tested according to GB/T4851-1998.For the degree of dissolvent residual in pressure-sensitive adhesive agent goods, reflected by VOC (volatile organic compounds, Volatileorganiccompounds).Test result is as shown in table 1.
Table 1
| Performance | EX1 | EX2 | EX3 | EX4 | EX5 | CEX1 | CEX2 |
| Outward appearance | Evenly | Evenly | Evenly | Evenly | Evenly | Evenly | Evenly |
| Initial bonding strength (ball #) | 10 | 10 | 10 | 10 | 10 | 8 | 10 |
| 180 ° of peeling forces (N/25mm) | 24.28 | 23.56 | 24.99 | 25.22 | 24.79 | 19.40 | 21.73 |
| Hold tack (min) | >7000 | >7000 | >7000 | >7000 | >7000 | >7000 | >7000 |
| VOC(μg/m 3) | 140 | 160 | 150 | 170 | 150 | 480 | 710 |
As can be seen from the contrast of embodiment 1-5 and comparative example 1-2, meet in the embodiment 1-5 of the scope that the application limits, gained pressure sensitive adhesive also obtain the initial bonding strength met the demands, 180 ° of performances such as peeling force, hold tack when not using multi-solvent, and solvent evaporates amount is low, little to the pollution of environment.And use T in comparative example 1
ghigher soft monomer, then need to use more solvent just can obtain the glue of appearance uniform, this causes its solvent evaporates amount higher, and has a negative impact to initial bonding strength.Comparative example 2 does not use the compound containing epoxide group, and its solvent evaporates amount is high, to bad environmental, is unfavorable for its product to be used for medical industry.
It is emphasized that embodiment of the present invention is illustrative, instead of determinate.Therefore; the present invention is not limited to the embodiment described in embodiment; any those of ordinary skill in the art are in the technical scope disclosed by the present invention, and the change can expected without creative work or replacement, all should be encompassed within protection scope of the present invention.
Claims (10)
1. the medical polyacrylate pressure-sensitive adhesive of an environmental protection sticks agent, it is characterized in that, this pressure-sensitive adhesive agent comprises soft monomer, hard monomer, functional monomer, tackifying resin, initiator, the compound containing epoxide group, solvent, and the second-order transition temperature of wherein said soft monomer is-65 to-70 DEG C.
2. pressure-sensitive adhesive agent according to claim 1, wherein said soft monomer is one or more the mixture in ethyl propenoate, butyl acrylate, Isooctyl acrylate monomer, ethyl acrylate.
3. the pressure-sensitive adhesive agent according to any one of claim 1-2, wherein said hard monomer is one or more the mixture in methyl methacrylate, methyl acrylate, vinylbenzene, vinyl-acetic ester, vinyl cyanide.
4. the pressure-sensitive adhesive agent according to any one of claim 1-3, wherein said functional monomer is one or more the mixture in vinylformic acid, methacrylic acid, Hydroxyethyl acrylate, Propylene glycol monoacrylate, Rocryl 410, Dimethylaminoethyl Methacrylate, acrylamide, maleic anhydride.
5. the pressure-sensitive adhesive agent according to any one of claim 1-4, wherein said tackifying resin is one or more the mixture in rosin, polymerized rosin, esterase, rosin pentaerythritol ester, hydrogenated rosin glyceride, terpine resin.
6. the pressure-sensitive adhesive agent according to any one of claim 1-5, wherein said initiator is one or more the mixture in dibenzoyl peroxide, dicumyl peroxide, peroxidized t-butyl perbenzoate, peroxydicarbonate or N, N-dihydroxyalkyl para-totuidine.
7. the pressure-sensitive adhesive agent according to any one of claim 1-6, the wherein said compound containing epoxide group can be one or more the mixture in propylene oxide, butylene oxide ring, propanepoxy resin, four phenolic group epoxy resin, naphthols novolac epoxy resin, vinyl cyclohexene dioxide epoxy resin.
8. the pressure-sensitive adhesive agent according to any one of claim 1-7, wherein said solvent is one or more the mixture in ethyl acetate, normal hexane, heptane, methyl alcohol, Virahol, butanone.
9. the pressure-sensitive adhesive agent according to any one of claim 1-8, wherein each component is with the consumption of parts by weight is respectively 30-60 part soft monomer, 10-25 part hard monomer, 5-10 part functional monomer, 5-15 part tackifying resin, 0.01-0.5 part initiator, 1-5 part contain epoxide group compound, 20-40 part solvent;
Preferred 35-50 part soft monomer, 10-20 part hard monomer, 5-7 part functional monomer, 8-12 part tackifying resin, 0.01-0.1 part initiator, 1-3 part contain compound, 25-35 part solvent of epoxide group;
More preferably 40-50 part soft monomer, 15-20 part hard monomer, 6-7 part functional monomer, 10-12 part tackifying resin, 0.01-0.1 part initiator, 1-3 part contain compound, 25-30 part solvent of epoxide group;
Most preferably be 40-45 part soft monomer, compound, 28-30 part solvent that 15-18 part hard monomer, 6-7 part functional monomer, 10-11 part tackifying resin, 0.05-0.1 part initiator, 1-2 part contain epoxide group.
10. the medical polyacrylate pressure-sensitive adhesive of the environmental protection according to any one of claim 1-9 sticks the preparation method of agent, comprise and soft monomer is slowly warming up between 70 DEG C to 90 DEG C, again the mixture that hard monomer, functional monomer, initiator stir slowly is instilled in soft monomer, drip off in 2 hours, continue back flow reaction 3 hours afterwards, be cooled to 50 DEG C, add the mixture of tackifying resin, compound containing epoxide group, solvent, be incubated discharging after 2 hours, coated article post-heating is to 130-140 DEG C and be incubated 1-2 minute.
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| CN106361821A (en) * | 2016-09-28 | 2017-02-01 | 四川三和医用材料有限公司 | Inflammation resisting, sterilizing, wind dispelling and dampness eliminating plaster |
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