CN107226962B - Use of a heterophasic propylene copolymer as a storage container - Google Patents
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- CN107226962B CN107226962B CN201710430125.1A CN201710430125A CN107226962B CN 107226962 B CN107226962 B CN 107226962B CN 201710430125 A CN201710430125 A CN 201710430125A CN 107226962 B CN107226962 B CN 107226962B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/14—Copolymers of propene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F210/00—Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F210/04—Monomers containing three or four carbon atoms
- C08F210/08—Butenes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F210/00—Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F210/14—Monomers containing five or more carbon atoms
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F210/00—Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F210/16—Copolymers of ethene with alpha-alkenes, e.g. EP rubbers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/14—Gas barrier composition
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/10—Applications used for bottles
Abstract
The present application discloses the use of a heterophasic propylene copolymer as storage container for storing a substance susceptible to transformation into the gaseous state or a composition comprising a substance susceptible to transformation into the gaseous state, the heterophasic propylene copolymer having: (1) the heterophasic propylene copolymer has a xylene solubles content of from 16 wt% to 35 wt% or from 40 wt% to 60 wt%, determined according to ISO 16152; (2) (ii) the heterophasic propylene copolymer has a melt flow rate at 230 ℃ of from 1.0g/min to 10.0g/min, determined according to ISO 1133; (3) the heterophasic propylene copolymer has a comonomer content of from 7.0 wt% to 17.0 wt% or from 8.5 mol% to 21.0 mol%.
Description
Technical Field
The present application relates to the use of a heterophasic propylene copolymer as storage container.
Background
Since chain monoterpene compounds, cyclic monoterpene compounds, tropolone compounds, iridoid compounds and sesquiterpene compounds are volatile oil compounds, in the prior art, the small storage container prepared by an extrusion molding process cannot achieve the purpose of storing the compounds, and particularly, the cyclic monoterpene compounds are usually used for medicines, such as peppermint oil, eucalyptol, camphor, borneol and the like, which need to be stored in small package specifications.
Therefore, there is a need to develop a method for storing chain monoterpene compounds, cyclic monoterpene compounds, tropolone compounds, iridoid compounds and sesquiterpene compounds, which is suitable for extrusion molding process to prepare small-sized storage containers.
Disclosure of Invention
One of the present applications provides the use of a heterophasic propylene copolymer as storage container for storing a substance susceptible to transformation into the gaseous state or a composition comprising a substance susceptible to transformation into the gaseous state, the heterophasic propylene copolymer having:
(1) the heterophasic propylene copolymer has a xylene solubles content of from 16 wt% to 35 wt% or from 40 wt% to 60 wt%, determined according to ISO 16152;
(2) (ii) the heterophasic propylene copolymer has a melt flow rate at 230 ℃ of from 1.0g/min to 10.0g/min, determined according to ISO 1133;
(3) the heterophasic propylene copolymer has a comonomer content of from 7.0 wt% to 17.0 wt% or from 8.5 mol% to 21.0 mol%.
In a specific embodiment, the substance that is easily converted into a gaseous state is selected from at least one of chain monoterpenes, cyclic monoterpenes, tropolones, iridoids, and sesquiterpenes.
In a specific embodiment, the cyclic monoterpene compound is selected from at least one of peppermint oil, eucalyptol, camphor and borneol.
In one embodiment, the substance susceptible to conversion to a gaseous state is present in the composition in a form selected from the group consisting of dispersion in a solution, aggregation in a solution, formation of a suspension, formation of a colloid, and formation in a cyclodextrin inclusion.
In one embodiment, the substance susceptible to transformation into a gaseous state is completely sealed within the storage container in pure form in solid and/or liquid form.
In a specific embodiment, the shape of the storage container is selected from one of a pouch shape, a bottle shape, and a random shape.
In one embodiment, the storage container is loaded in an amount of 0.1 μ g to 10 g.
In a particular embodiment, the storage container is made by extrusion molding of the heterophasic propylene copolymer.
In one embodiment, the extrusion head temperature: 180 ℃ to 190 ℃; rotating speed of the extrusion screw: 11rpm/min to 14 rpm/min; temperature of the die: 160 ℃ to 170 ℃; cycle time: 12s to 16 s.
In one embodiment, the heterophasic propylene copolymer is prepared under the following conditions:
a) polymerizing propylene and olefin monomers at the temperature of 20-42 ℃ for 1-5 hours in the presence of a catalyst system to obtain a polymer I; b) then introducing hydrogen, and continuing to polymerize for 1-3 hours at the temperature of 70-86 ℃ to obtain the multiphase propylene copolymer; wherein the olefin monomer is selected from ethylene and/or CH2＝CHT1α -at least one of olefins, T1Is C2-C20Alkyl, olefin monomer/propylene ratio of 4.0 to 6.0(mol/kmol), said catalyst system being: triethyl aluminum and cyclohexyl methyl dimethoxy silane with the molar ratio of 6.0-7.0 are loaded on an inert carrier; the ratio of hydrogen to propylene is from 0.7 to 1.0 (mol/kmol).
In one embodiment, the inert carrier is selected from silica and/or alumina.
In a specific embodiment, the heterophasic propylene copolymer in the storage container has a thickness of 10 μm or more.
In a specific embodiment, the heterophasic propylene copolymer in the storage container has a thickness of from 200 μm to 300 μm.
In a particular embodiment, the storage container comprises in addition to the heterophasic propylene copolymer layer an additional layer.
In a specific embodiment, the additional layer is made of at least one material selected from the group consisting of polyethylene, polypropylene, polyvinyl chloride, and a metal thin laminated film.
The beneficial effects that this application can produce include:
1) it was found that the heterophasic propylene copolymers provided have the property of being impermeable to solids, liquids and gases, in particular to gases, thus ensuring that the amount of borneol present in the solution in the storage container prepared therefrom is not significantly reduced during a long storage period, ensuring the product quality.
2) The heterophasic propylene copolymers provided herein are particularly suitable for the preparation of storage containers by extrusion process, whereas generally only extrusion process is suitable for the preparation of containers with a smaller volume, and thus the use of the heterophasic propylene copolymers herein for the preparation of products of extrusion process with a smaller volume is particularly suitable for the preparation of products containing chain monoterpenes, cyclic monoterpenes, tropolones, iridoids and sesquiterpenes (volatile substances).
3) The storage container prepared by the extrusion molding process has the advantage of complete sealing, and is more suitable for containing chain monoterpene compounds, cyclic monoterpene compounds, tropolone compounds, iridoid compounds and sesquiterpene compounds (volatile substances).
Detailed Description
The present application will be described in detail with reference to examples, but the present application is not limited to these examples.
The raw materials in the examples of the present application were all purchased commercially, unless otherwise specified.
Heterophasic propylene copolymer production step:
a) polymerizing propylene and olefin monomers at the temperature of 20-42 ℃ for 1-5 hours in the presence of a catalyst system to obtain a polymer I; b) then introducing hydrogen, and continuing to polymerize for 1-3 hours at the temperature of 70-86 ℃ to obtain the multiphase propylene copolymer; wherein the olefin monomer is selected from ethylene and/or CH2＝CHT1α -at least one of olefins, T1Is C2-C20Alkyl, olefin monomer/propylene ratio of 4.0 to 6.0(mol/kmol), said catalyst system being: triethyl aluminum and cyclohexyl methyl dimethoxy silane with the molar ratio of 6.0-7.0 are loaded on an inert carrier of silicon dioxide and/or aluminum oxide; the ratio of hydrogen to propylene is from 0.7 to 1.0 (mol/kmol).
The heterophasic propylene copolymers prepared according to the preparation conditions of table 1 are in turn labelled: 1#, 2#, 3#, 4 #.
TABLE 1
| Preparation conditions | 1# | 2# | 3# | 4# |
| Ratio of olefin monomer/propylene (mol/kmol) | 4.2 | 5.3 | 4.0 | 6.0 |
| Olefin monomer | Ethylene | C4H8 | C12H24 | C22H44 |
| Step a) polymerization temperature (. degree.C.) | 35 | 38 | 20 | 42 |
| Step (ii) ofa) Polymerization time (h) | 2.5 | 3.5 | 1 | 5 |
| Triethylaluminium/cyclohexylmethyldimethoxysilane (mol/mol) | 6.3 | 6.5 | 6.0 | 7.0 |
| Step b) polymerization temperature (. degree.C.) | 79 | 82 | 70 | 86 |
| Step b) polymerization time (h) | 1.5 | 2.5 | 1 | 3 |
| Ratio of hydrogen/propene (mol/kmol) | 0.9 | 0.7 | 0.7 | 1.0 |
Comonomer content determination by13Fourier transform infrared spectrometry calibrated by C-nuclear magnetic resonance spectroscopy. Firstly, the multiphase propylene copolymer is hot-pressed to prepare a film with the thickness of 250 mu m, and then the absorption peak of the propylene-ethylene copolymer monomer is measured by a BRUKER Fourier transform infrared spectrometerPeak area of (a).
Xylene solubles determination: the xylene solubles contents of the heterophasic propylene copolymers # 1, # 2, # 3 and # 4 prepared were, measured at 25 ℃ in the order of 16 wt%, 35 wt%, 40 wt% and 60 wt%, respectively, according to the ISO 16152 requirements.
And (3) melt flow rate measurement: measured according to ISO 1133 at 230 ℃ under a load of 2.16 kg. The melt flow rates of the heterophasic propylene copolymers No. 1, No. 2, No. 3 and No. 4 are respectively 1.0g/min, 4.6g/min, 8.2g/min and 10.0g/min at 230 ℃.
Preparation of storage container:
using a WILLER extrusion blow molding machine, the main process parameters for production are as follows:
temperature of the extrusion head: 180-190 ℃;
extrusion screw speed (revolutions per minute; rpm): 11-14 rpm;
temperature of the die: 160-170 ℃;
cycle time: 12-16 s.
The storage containers prepared from samples 1#, 2#, 3#, and 4# are labeled 5#, 6#, 7#, and 8# in sequence.
Example 1
The borneol solid is respectively sealed in 10 storage containers 5#, 10 storage containers 6#, 10 storage containers 7#, and 10 storage containers 8#, so that the borneol solid is not contacted with the outside, then sampling is carried out once a month, and the amount of the borneol solid in the containers is determined by using gas chromatography to carry out headspace sampling, so that the result is shown in table 2, and the amount of the borneol solid in the containers is not obviously changed and is not obviously different from table 2.
The borneol content was determined using shimadzu GC 2014-C gas chromatograph.
Chromatographic conditions and system applicability test: polyethylene glycol (PEG) -20M is used as a stationary liquid, and the coating concentration is 8%; the column temperature was 120 ℃. + -. 15 ℃. The number of theoretical plates should not be less than 1000 calculated according to the peak of n-octadecane.
And (3) determination of a correction factor: an appropriate amount of n-octadecane was weighed out precisely, and dissolved and diluted with ethyl acetate to prepare a solution containing 2mg per 1mL as an internal standard solution. And precisely weighing about 30mg of borneol reference substance, placing the reference substance into a 10mL measuring flask, adding the internal standard solution to dissolve the reference substance, and diluting the reference substance to the scale. Injecting 1 μ L into gas chromatograph, continuously injecting sample for 5 times, and calculating correction factor according to average peak area.
The determination method comprises the following steps: precisely weighing the product and the internal standard solution, performing headspace sampling, and measuring.
TABLE 2
Example 2
Taking ethanol as a solvent, preparing borneol into 0.06% borneol solution, respectively sealing in 10 storage containers 5#, 10 storage containers 6#, 10 storage containers 7#, and 10 storage containers 8#, so that the borneol solution is not contacted with the outside, then sampling at a fixed time, and detecting the change of the borneol concentration in the solution in the containers by using a gas chromatography, wherein the result is shown in table 3, and the concentration of the borneol solution in the containers is not changed and has no obvious difference as shown in table 3.
The borneol content was determined using shimadzu GC 2014-C gas chromatograph.
Chromatographic conditions and system applicability test: polyethylene glycol (PEG) -20M is used as a stationary liquid, and the coating concentration is 8%; the column temperature was 120 ℃. + -. 15 ℃. The number of theoretical plates should not be less than 1000 calculated according to the peak of n-octadecane.
And (3) determination of a correction factor: an appropriate amount of n-octadecane was weighed out precisely, and dissolved and diluted with ethyl acetate to prepare a solution containing 2mg per 1mL as an internal standard solution. And precisely weighing about 30mg of borneol reference substance, placing the reference substance into a 10mL measuring flask, adding the internal standard solution to dissolve the reference substance, and diluting the reference substance to the scale. Injecting 1 μ L into gas chromatograph, continuously injecting sample for 5 times, and calculating correction factor according to average peak area.
The determination method comprises the following steps: precisely measuring 10mL of the product and 2mL of the internal standard solution, placing in a test tube with a grinding tool plug, shaking the sealing plug, standing for 30 minutes, completely layering, taking 1 μ L of supernatant, injecting into a gas chromatograph, and measuring to obtain the final product.
TABLE 3
Example 3
The method comprises the steps of preparing 0.04% borneol suspension by using water as a solvent, sealing the suspension in 10 storage containers of the substance which is easy to be converted into gas state so as to prevent the borneol suspension from contacting with the outside, then sampling at a fixed time, and detecting the change of the concentration of the borneol in the suspension in the containers by using the gas chromatography method in the embodiment 2, wherein the results are shown in table 4, and the concentration of the borneol suspension in the containers has no obvious change and has no obvious difference from the table 4.
TABLE 4
Example 4
The method comprises the steps of taking water as a solvent, adding sodium carboxymethylcellulose as a matrix, preparing 0.03% borneol into a colloidal solution, sealing the colloidal solution in 10 storage containers of the substance which is easy to be converted into a gas state so as not to contact with the outside, then sampling at a fixed time, and detecting the change of the concentration of the borneol in the colloidal solution in the containers by using the gas chromatography method in the embodiment 2, wherein the results are shown in table 5, and the concentration of the borneol in the colloidal solution in the containers is not obviously changed as can be seen from the table 5.
TABLE 5
Example 5
Using ethanol as solvent, preparing oleum Menthae Dementholatum into 0.08% oleum Menthae Dementholatum solution, sealing in 10 storage containers of the substance which is easily converted into gas state, so as not to contact with outside, sampling at fixed time, and detecting the change of the concentration of oleum Menthae Dementholatum solution in the container by gas chromatography, the results are shown in Table 6. As can be seen from table 6, there was no significant change in the concentration of the peppermint oil solution in the container, and the difference was not significant.
Peppermint oil content was determined using shimadzu GC 2014-C gas chromatograph.
Chromatographic conditions and system applicability test: an elastic quartz capillary column (column length 25nm, inner diameter 0.20mm, film thickness 0.33um) HP-FFAP; temperature programming; the initial temperature is 60 ℃, the temperature is kept for 4 minutes, the temperature is increased to 100 ℃ at the rate of 2 ℃ per minute, then the temperature is increased to 230 ℃ at the rate of 10 ℃ per minute, and the temperature is kept for 1 minute; the injection port temperature is 250 ℃, and the detector temperature is 250 ℃; the split ratio is 10: 1. The number of theoretical plates should not be less than 20000 calculated according to cyclohexanone peak.
And (3) determination of a correction factor: accurately weighing appropriate amount of cyclohexanone, adding n-hexane to prepare solution containing 8mg per 1ml, and shaking up to obtain internal standard solution. And precisely weighing 50mg of (-) -menthone reference substance and 80mg of menthol reference substance, placing the materials into a 25ml measuring flask, precisely adding 2ml of internal standard solution, adding n-hexane to the scale, shaking up, sucking 1ul of the solution, injecting the solution into a gas chromatograph, and calculating a correction factor.
The determination method comprises the following steps: taking about 0.2g of the product, precisely weighing, placing in a 25ml measuring flask, precisely adding 2ml of internal standard solution, adding n-hexane to scale, shaking up, sucking 1uL, injecting into a gas chromatograph, and measuring to obtain the final product.
TABLE 6
Example 6
The method comprises the steps of preparing eucalyptol into eucalyptol solution with the concentration of 0.06% by taking ethanol as a solvent, sealing the eucalyptol solution in 10 storage containers of substances which are easy to convert into gas, enabling the eucalyptol solution not to contact with the outside, sampling at fixed time, detecting the change of the concentration of the eucalyptol solution in the containers by utilizing a gas chromatography, and finding out the result shown in table 7 that the concentration of the eucalyptol solution in the containers has no obvious change and the difference is not obvious from the table 7.
The eucalyptol content was determined using an shimadzu GC 2014-C gas chromatograph.
Chromatographic conditions and system applicability test: polyethylene glycol (PEG) -20M and silicone (OV-17) are used as fixative, and the coating concentration is 10% and 2% respectively; the coated carriers were loaded into the same column (PEG at the inlet end) in a ratio (weight ratio) of 7: 3; the column temperature is 110 +/-5 ℃; the number of theoretical plates is not lower than 2500 calculated according to the eucalyptol peak, and the separation degree of the eucalyptol and adjacent impurity peaks meets the requirement.
And (3) determination of a correction factor: taking a proper amount of cyclohexanone, precisely weighing, adding n-hexane for dissolving and diluting into a solution containing 50mg per 1mL, and taking the solution as an internal standard solution. And precisely weighing about 100mg of eucalyptol reference substance, placing the reference substance into a 10mL measuring flask, precisely adding 2mL of internal standard solution, diluting to a scale with n-hexane, shaking up, injecting 1 mu L of the internal standard solution into a gas chromatograph, continuously injecting the sample for 3-5 times, and calculating a correction factor according to the average peak area.
The determination method comprises the following steps: taking about 100mg of the product, precisely weighing, placing in a 10ml measuring flask, precisely adding 2ml of internal standard solution, dissolving with n-hexane, diluting to scale, and shaking up to obtain a sample solution. Injecting 1 μ L into gas chromatograph, and measuring.
TABLE 7
| Time/month | 0 | 1 | 2 | 3 | 6 | 9 | 12 | 18 | 24 | 36 |
| Eucalyptol concentration 5% | 0.0655 | 0.0651 | 0.0653 | 0.0650 | 0.0648 | 0.0651 | 0.0647 | 0.0649 | 0.0650 | 0.0646 |
| Concentration/% of eucalyptol 6# | 0.0655 | 0.0653 | 0.0651 | 0.0648 | 0.0652 | 0.0650 | 0.0647 | 0.0644 | 0.0648 | 0.0645 |
| 7# eucalyptol concentration/%) | 0.0655 | 0.0652 | 0.0650 | 0.0648 | 0.0645 | 0.0647 | 0.0649 | 0.0646 | 0.0643 | 0.0641 |
| Concentration/% of eucalyptol # 8 | 0.0655 | 0.0651 | 0.0649 | 0.0646 | 0.0643 | 0.0647 | 0.0645 | 0.0643 | 0.0641 | 0.0638 |
Example 7
Using ethanol as a solvent, preparing camphor into 0.09% camphor solution, sealing the camphor solution in 10 storage containers of the substances which are easy to be converted into gas state so as to prevent the camphor solution from contacting with the outside, then sampling at a fixed time, and detecting the change of the concentration of the camphor solution in the containers by using gas chromatography, wherein the result is shown in table 8, and the camphor solution concentration in the containers has no significant change and has no significant difference from the table 8.
Camphor content was determined using shimadzu GC 2014-C gas chromatograph.
Chromatographic conditions and system applicability test: polyethylene glycol (PEG) -20M is used as a stationary liquid, and the coating concentration is 10%; the column temperature is 140 ℃, the number of theoretical plates is not lower than 1000 calculated according to the peak of camphor, and the separation degree of the peak of camphor and the peak of the internal standard substance is more than 2.
And (3) determination of a correction factor: taking a proper amount of camphor, precisely weighing, adding 70% ethanol for dissolving, and preparing a solution containing 20mg per 1ml as an internal standard solution. Taking about 40mg of camphor reference substance, precisely weighing, placing in a 10mL measuring flask, precisely adding 2mL of internal standard solution, diluting with 70% ethanol to scale, shaking up, taking 1 μ L, injecting into a gas chromatograph, continuously injecting for 3-5 times, and calculating correction factor according to average peak area.
The determination method comprises the following steps: precisely measuring 1mL of the product, placing the product in a 10mL measuring flask, precisely adding 2mL of internal standard solution, dissolving the internal standard solution with 70% ethanol, diluting to scale, and shaking up to obtain a test solution. Injecting 1 μ L into gas chromatograph, and measuring.
TABLE 8
Example 8
The method comprises the steps of preparing 0.06 percent borneol solution from borneol by taking ethanol as a solvent, sealing the solution in 10 storage containers of the substance which is easy to be converted into gas state so as not to contact with the outside, then sampling at a fixed time, and detecting the change of the concentration of the borneol solution in the containers by using a gas chromatography, wherein the result is shown in table 9, and the concentration of the borneol solution in the containers has no obvious change and has no obvious difference from the result shown in table 9.
The borneol content was determined using shimadzu GC 2014-C gas chromatograph.
Chromatographic conditions and system applicability test: polyethylene glycol (PEG) -20M is used as a stationary liquid, and the coating concentration is 8%; the column temperature was 120 ℃. + -. 15 ℃. The number of theoretical plates is not less than 1000 calculated according to the peak of n-octadecane;
and (3) determination of a correction factor: an appropriate amount of n-octadecane was weighed out precisely, and dissolved and diluted with ethyl acetate to prepare a solution containing 2mg per 1mL as an internal standard solution. And precisely weighing about 30mg of borneol reference substance, placing the reference substance into a 10mL measuring flask, adding the internal standard solution to dissolve the reference substance, and diluting the reference substance to the scale. Injecting 1 μ L into gas chromatograph, continuously injecting sample for 5 times, and calculating correction factor according to average peak area.
The determination method comprises the following steps: precisely measuring 10mL of the product and 2mL of the internal standard solution, placing in a test tube with a grinding tool plug, shaking the sealing plug, standing for 30 minutes, completely layering, taking 1 μ L of supernatant, injecting into a gas chromatograph, and measuring to obtain the final product.
TABLE 9
Comparative example 1
The packaging is carried out by utilizing the extrusion of the isotactic polypropylene copolymer, but the extrusion temperature of the isotactic polypropylene copolymer is more than 220 ℃, and the rigidity is large, so that a container cannot be extruded and molded.
Comparative example 2
By using aluminium foil
The laminated film is packed by being vacuumed and closely adsorbed to the polyethylene terephthalate alcohol, but the container cannot be extrusion-molded because the polyethylene terephthalate alcohol is a highly crystalline polymer.
Although the present application has been described with reference to a few embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application as defined by the appended claims.
Claims (8)
1. Use of a heterophasic propylene copolymer as a storage container for the storage of peppermint oil, eucalyptol and camphor, the heterophasic propylene copolymer having:
(1) the heterophasic propylene copolymer has a xylene solubles content of from 16 wt% to 35 wt% or from 40 wt% to 60 wt%, determined according to ISO 16152;
(2) (ii) the heterophasic propylene copolymer has a melt flow rate at 230 ℃ of from 1.0g/min to 10.0g/min, determined according to ISO 1133;
(3) the heterophasic propylene copolymer has a comonomer content of from 7.0 wt% to 17.0 wt% or from 8.5 mol% to 21.0 mol%;
the storage container is made by extrusion molding of the heterophasic propylene copolymer;
the storage container is filled in an amount of 0.1. mu.g to 10 g.
2. The use according to claim 1,
the peppermint oil, eucalyptol and camphor are completely sealed within the storage container in pure form in solid and/or liquid form.
3. The use according to claim 1, wherein the shape of the storage container is selected from one of a pouch, a bottle, and a random shape.
4. Use according to claim 1, wherein the extrusion head temperature is: 180 ℃ to 190 ℃; rotating speed of the extrusion screw: 11rpm/min to 14 rpm/min; temperature of the die: 160 ℃ to 170 ℃; cycle time: 12s to 16 s.
5. Use according to any one of claims 1 to 4, wherein the heterophasic propylene copolymer is prepared under the following conditions:
a) polymerizing propylene and olefin monomers at the temperature of 20-42 ℃ for 1-5 hours in the presence of a catalyst system to obtain a polymer I; b) then introducing hydrogen, and continuing to polymerize for 1-3 hours at the temperature of 70-86 ℃ to obtain the multiphase propylene copolymer; wherein the olefin monomer is selected from ethylene and/or CH2＝CHT1α -at least one of olefins, T1Is C2-C20Alkyl, olefin monomer/propylene ratio of 4.0 to 6.0mol/kmol, said catalyst system being: triethyl aluminum and cyclohexyl methyl dimethoxy silane with the molar ratio of 6.0-7.0 are loaded on an inert carrier; the ratio of hydrogen to propylene is from 0.7 to 1.0 mol/kmol.
6. Use according to any one of claims 1 to 5, wherein the heterophasic propylene copolymer in the storage container has a thickness of 10 μm or more.
7. Use according to any one of claims 1 to 5, wherein the heterophasic propylene copolymer in the storage container has a thickness of from 200 μm to 300 μm.
8. Use according to any of claims 1 to 7, wherein the storage container comprises in addition to the heterophasic propylene copolymer layer an additional layer; the material used for the additional layer is selected from at least one of polyethylene, polypropylene, polyvinyl chloride and metal thin laminated film.
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|---|---|---|---|---|
| EP2452975A1 (en) * | 2010-11-12 | 2012-05-16 | Borealis AG | Soft heterophasic propylene copolymers |
| WO2013000767A1 (en) * | 2011-06-27 | 2013-01-03 | Borealis Ag | Multi-layer biaxially oriented polymer film |
| WO2014187686A1 (en) * | 2013-05-22 | 2014-11-27 | Borealis Ag | Polypropylene for film applications |
| WO2016162359A1 (en) * | 2015-04-10 | 2016-10-13 | Borealis Ag | Composition based on pp random copolymers and elastomers |
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| EP2452975A1 (en) * | 2010-11-12 | 2012-05-16 | Borealis AG | Soft heterophasic propylene copolymers |
| WO2013000767A1 (en) * | 2011-06-27 | 2013-01-03 | Borealis Ag | Multi-layer biaxially oriented polymer film |
| WO2014187686A1 (en) * | 2013-05-22 | 2014-11-27 | Borealis Ag | Polypropylene for film applications |
| WO2016162359A1 (en) * | 2015-04-10 | 2016-10-13 | Borealis Ag | Composition based on pp random copolymers and elastomers |
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