CN108440845A - A kind of impact resistance low temperature PP plastics and preparation method thereof - Google Patents
A kind of impact resistance low temperature PP plastics and preparation method thereof Download PDFInfo
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- CN108440845A CN108440845A CN201810405375.4A CN201810405375A CN108440845A CN 108440845 A CN108440845 A CN 108440845A CN 201810405375 A CN201810405375 A CN 201810405375A CN 108440845 A CN108440845 A CN 108440845A
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- 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
- C08L23/12—Polypropene
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/004—Additives being defined by their length
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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- C08L2207/00—Properties characterising the ingredient of the composition
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Abstract
The invention discloses a kind of impact resistance low temperature PP plastics and preparation method thereof, the impact resistance low temperature PP plastics, including the following raw material：PP, low density polyethylene (LDPE), ethylene propylene copolymer, propylene farnesene copolymer, asphalt base carbon fiber, silochrom, be chopped nylon fiber, antioxidant, lubricant.The low-temperature impact-resistant performance and mechanical property of the impact resistance low temperature PP plastics of the present invention are enhanced.
Description
Technical field
The invention belongs to technical field of polymer, and in particular to a kind of impact resistance low temperature PP plastics and preparation method thereof.
Background technology
Polypropylene, English name：Polypropylene, abbreviation title PP.Its chemical formula is：(C3H6)N.Structural formula is such as
Shown in lower：Polypropylene PP has excellent comprehensive performance, good chemical stability, preferably as one of general-purpose plastics material
Moulding processability and relative moderate price；But PP is there is intensity, modulus, hardness are low, low-temperature impact-resistant intensity difference,
Inprocess shrinkage is big, it is easy to aging the shortcomings of.Therefore, it is modified, allows it to the demand for adapting to product.Each is modified
PP suffers from extensive application in household appliance technical field and automobile-used field.Wollastonite is raphioid fiber, has enhancing to make polypropylene
With, while also substantially increasing polyacrylic wearability, rigidity and heat resistance.
The microstructure of high polymer plays conclusive effect to its performance, and its backbone structure is to chain rigidity, soft
Property influence it is maximum.For isotactic polypropylene（PP）For, in isotactic PP, the configuration for the methyl that dangles is identical and is located at polymer chain
Homonymy, in the configuration of extension, these groups are consumingly mutually exclusive, by forming 31 spirals（That is each spiral circulation
There are 3 chemical repeat units）, the methyl on chain is each other far as possible from this is the configuration of polymeric energy minimum, by this rule
Then repeated arrangement, isotactic PP have high crystallinity, impact resistance poor.Since methyl is arranged in spacial ordering on chain,
C-C key inward turnings on main chain are obstructed, and molecule chain flexibility is small, its impact strength is relatively low.
Therefore, a kind of low temperature excellent with excellent low-temperature impact-resistant intensity and other physical properties of urgent need is moulded with PP
Feed composition.
Invention content
The present invention provides a kind of impact resistance low temperature PP plastics and preparation method thereof, obtained by optimizing component, dosage
Product has excellent low-temperature impact-resistant intensity and other physical properties excellent.
In order to solve the above technical problems, the present invention uses following technical scheme：
A kind of impact resistance low temperature PP plastics, which is characterized in that as unit of mass parts, including the following raw material：PP, low-density are poly-
Ethylene, ethylene-propylene copolymer, propylene-farnesene copolymer, asphalt base carbon fiber, silochrom, be chopped nylon fiber, resists
Oxygen agent, lubricant；The asphalt base carbon fiber, silochrom, be chopped nylon fiber mass ratio be（5-10）:（2-3）:（4-
6）, the quality of the low density polyethylene (LDPE) accounts for PP mass 10-20%, and the propylene content of the ethylene-propylene copolymer is 10-
15%, the farnesene content of the propylene-farnesene copolymer is 10-15%.
Further, the impact resistance low temperature PP plastics, as unit of mass parts, including the following raw material：PP100
Part, 10-20 parts of low density polyethylene (LDPE), 10-20 parts of ethylene-propylene copolymer, propylene -0-20 parts of farnesene copolymer 1, asphaltic base
5-10 parts of carbon fiber, 2-3 parts of silochrom, be chopped 4-6 parts of nylon fiber, 1-2 parts of antioxidant, 2-4 parts of lubricant.
Further, the mass ratio of the asphalt base carbon fiber, silochrom, the nylon fiber that is chopped is 7.5:2.5:5.
Further, silochrom is microspheroidal silochrom, 20-50 mesh.
Further, the length 100-200um of the asphalt base carbon fiber.
Further, the length about 0.3-0.5mm of the chopped nylon fiber.
Further, the antioxidant is polynary hindered phenol type antioxidant.
Further, the lubricant is at least one of calcium stearate, paraffin, polyethylene wax.
A kind of preparation method according to above-mentioned impact resistance low temperature PP plastics, which is characterized in that include the following steps：
（1）Ethylene-propylene copolymer, propylene-farnesene copolymer is polymerize in proportion by emulsion polymerization to be obtained；
（2）By PP, low density polyethylene (LDPE), ethylene-propylene copolymer, propylene-farnesene copolymer, asphalt base carbon fiber, gross porosity
Silica gel, be chopped nylon fiber, antioxidant, and lubricant is kneaded 5-10 minutes in high speed mixing smelting machine in proportion, obtains mixed raw material；
（3）The mixed raw material of step 2 is put into double screw extruder and is reacted, material residence time 1- in machine barrel
2min obtains reaction product,
（4）Finished product will be obtained after reaction product pelletizing, drying.
Further, each area's temperature of the double screw extruder is as follows：One 180-200 DEG C of area, two 200-220 DEG C of areas,
Three 200-220 DEG C of areas, four 200-220 DEG C of areas, five 200-220 DEG C of areas, six 200-220 DEG C of areas, seven 200-220 DEG C of areas, 8th area
200-220 DEG C, nine 200-220 DEG C of areas, 200-210 DEG C of head.
The invention has the advantages that：
The present invention is with ethylene-propylene copolymer, and propylene content 10-15%, in polymerization, introducing propylene is copolymerized, in ethylene
Defect is introduced on chain, destroys the arrangement of isotactic PP and low density polyethylene (LDPE), and there is crystallinity, the fusing point for reducing polymer, change
It has been apt to impact property and heat resistance.Propylene-farnesene copolymer is randomly added by the farnesene monomer that content is 10-15%
Crystallinity, the fusing point for reducing polymer, improve impact property and heat resistance, and effect is equal in isotactic polypropylene chain
Upper introducing defect makes the average isotacticity of resin and isotactic sequence length decline, and the compliance of strand increases.Farnesene has
There is longer length, therefore there is better effect than introducing ethylene, to improve low temperature impact effect.
Low density polyethylene (LDPE) includes linear molecule, has high resiliency, can effectively enhance polymer when squeezing out
Collapse resistance and anisotropy, to increase the elasticity and impact resistance of PP plastics, being added in PP can be mixed
Miscellaneous, so as to improve the distribution of strand, realizing improves cryogenic property.The filler of the present invention includes asphalt base carbon fiber, gross porosity silicon
Glue, be chopped nylon fiber, by coordinating certain proportion, to cooperate with the low temperature impact performance for improving PP plastics.Pitch base carbon
Fiber, silochrom, chopped nylon fiber all has good cryogenic property, and will not deform.Silochrom has larger
Aperture, resin can enter wherein, can preferably be dispersed in resin, further increase cryogenic property, be added separately to
Lead to mechanical properties decrease, since it is desired that there is the fiber of certain elasticity, asphalt base carbon fiber, chopped nylon fiber to have for cooperation
The fiber of different length can realize preferable cooperation.Three is dispersed in resin, can improve low temperature impact properties.
The impact resistance low temperature of the present invention introduces low density polyethylene (LDPE) with PP plastics in PP, ethylene-propylene copolymer, and third
Alkene-farnesene copolymer, and add a certain proportion of asphalt base carbon fiber, silochrom, be chopped nylon fiber prepare it is resistance to
Impact low temperature improves low-temperature impact-resistant performance and other physical properties with synergistic effect, collaboration is played in PP plastic process.
Specific implementation mode
For ease of more fully understanding the present invention, it is illustrated by the following examples, these examples belong to the protection of the present invention
Range, but do not limit the scope of the invention.
It is illustrated below by more specific embodiment.
Impact resistance low temperature PP plastics, which is characterized in that as unit of mass parts, including the following raw material：It is PP100 parts, low
10-20 parts of density polyethylene, 10-20 parts of ethylene-propylene copolymer, propylene -0-20 parts of farnesene copolymer 1, asphaltic base carbon fiber
5-10 parts of dimension, 2-3 parts of silochrom, be chopped 4-6 parts of nylon fiber, 1-2 parts of antioxidant, 2-4 parts of lubricant.
The quality of the low density polyethylene (LDPE) accounts for PP mass 10-20%, and the propylene content of the ethylene-propylene copolymer is
The farnesene content of 10-15%, the propylene-farnesene copolymer are 10-15%.Silochrom is microspheroidal silochrom, 20-
50 mesh.The length 100-200um of the asphalt base carbon fiber.The length about 0.3-0.5mm of the chopped nylon fiber.It is described
Antioxidant be polynary hindered phenol type antioxidant.The lubricant is polyethylene wax.
A kind of preparation method according to above-mentioned impact resistance low temperature PP plastics, which is characterized in that include the following steps：
（1）Ethylene-propylene copolymer, propylene-farnesene copolymer is polymerize in proportion by emulsion polymerization to be obtained；
（2）By PP, low density polyethylene (LDPE), ethylene-propylene copolymer, propylene-farnesene copolymer, asphalt base carbon fiber, gross porosity
Silica gel, be chopped nylon fiber, antioxidant, and lubricant is kneaded 5-10 minutes in high speed mixing smelting machine in proportion, obtains mixed raw material；
（3）The mixed raw material of step 2 is put into double screw extruder and is reacted, material residence time 1- in machine barrel
2min, obtains reaction product, and each area's temperature of the double screw extruder is as follows：One 180-200 DEG C of area, two 200-220 DEG C of areas,
Three 200-220 DEG C of areas, four 200-220 DEG C of areas, five 200-220 DEG C of areas, six 200-220 DEG C of areas, seven 200-220 DEG C of areas, 8th area
200-220 DEG C, nine 200-220 DEG C of areas, 200-210 DEG C of head.
（4）Finished product will be obtained after reaction product pelletizing, drying.
Embodiment 1
Impact resistance low temperature PP plastics, which is characterized in that as unit of mass parts, including the following raw material：PP100 parts, low-density
15 parts of polyethylene, 15 parts of ethylene-propylene copolymer, propylene -5 parts of farnesene copolymer 1,7.5 parts of asphalt base carbon fiber, gross porosity silicon
2.5 parts of glue, be chopped 5 parts of nylon fiber, 1.5 parts of antioxidant, 3 parts of lubricant.
The propylene content of the ethylene-propylene copolymer is 12.5%, and the farnesene of the propylene-farnesene copolymer contains
Amount is 12.5%.Silochrom is microspheroidal silochrom, 20-50 mesh.The length 150um of the asphalt base carbon fiber.It is described
The length about 0.4mm of chopped nylon fiber.The antioxidant is polynary hindered phenol type antioxidant.The lubricant is poly- second
Alkene wax.
A kind of preparation method according to above-mentioned impact resistance low temperature PP plastics, which is characterized in that include the following steps：
（1）Ethylene-propylene copolymer, propylene-farnesene copolymer is polymerize in proportion by emulsion polymerization to be obtained；
（2）By PP, low density polyethylene (LDPE), ethylene-propylene copolymer, propylene-farnesene copolymer, asphalt base carbon fiber, gross porosity
Silica gel, be chopped nylon fiber, antioxidant, and lubricant is kneaded 5-10 minutes in high speed mixing smelting machine in proportion, obtains mixed raw material；
（3）The mixed raw material of step 2 is put into double screw extruder and is reacted, material residence time 1- in machine barrel
2min, obtains reaction product, and each area's temperature of the double screw extruder is as follows：One 180-200 DEG C of area, two 200-220 DEG C of areas,
Three 200-220 DEG C of areas, four 200-220 DEG C of areas, five 200-220 DEG C of areas, six 200-220 DEG C of areas, seven 200-220 DEG C of areas, 8th area
200-220 DEG C, nine 200-220 DEG C of areas, 200-210 DEG C of head.
（4）Finished product will be obtained after reaction product pelletizing, drying.
Embodiment 2
Impact resistance low temperature PP plastics, which is characterized in that as unit of mass parts, including the following raw material：PP100 parts, low-density
10 parts of polyethylene, 20 parts of ethylene-propylene copolymer, propylene -0 part of farnesene copolymer 1,10 parts of asphalt base carbon fiber, gross porosity silicon
2 parts of glue, be chopped 6 parts of nylon fiber, 1 part of antioxidant, 4 parts of lubricant.
The propylene content of the ethylene-propylene copolymer is 15%, the farnesene content of the propylene-farnesene copolymer
It is 10%.Silochrom is microspheroidal silochrom, 20-50 mesh.The length 200um of the asphalt base carbon fiber.It is described to be chopped
The length of nylon fiber about 0.3mm.The antioxidant is polynary hindered phenol type antioxidant.The lubricant is polyethylene
Wax.
Preparation method is same as Example 1.
Embodiment 3
Impact resistance low temperature PP plastics, which is characterized in that as unit of mass parts, including the following raw material：PP100 parts, low-density
20 parts of polyethylene, 10 parts of ethylene-propylene copolymer, propylene -20 parts of farnesene copolymer, 5 parts of asphalt base carbon fiber, silochrom
3 parts, be chopped 4 parts of nylon fiber, 2 parts of antioxidant, 2 parts of lubricant.
The propylene content of the ethylene-propylene copolymer is 10%, the farnesene content of the propylene-farnesene copolymer
It is 15%.Silochrom is microspheroidal silochrom, 20-50 mesh.The length 100um of the asphalt base carbon fiber.It is described to be chopped
The length of nylon fiber about 0.5mm.The antioxidant is polynary hindered phenol type antioxidant.The lubricant is polyethylene
Wax.
Preparation method is same as Example 1.
Comparative example 1
It is essentially identical with the preparation process of embodiment 1, it has only the difference is that being lacked in the raw material of preparation impact resistance low temperature PP plastics
Few low density polyethylene (LDPE), ethylene-propylene copolymer, propylene-farnesene copolymer.
Comparative example 2
It is essentially identical with the preparation process of embodiment 1, it has only the difference is that being lacked in the raw material of preparation impact resistance low temperature PP plastics
Few low density polyethylene (LDPE).
Comparative example 3
It is essentially identical with the preparation process of embodiment 1, have only unlike prepare impact resistance low temperature PP plastics raw material in second
Alkene-propylene copolymer.
Comparative example 4
It is essentially identical with the preparation process of embodiment 1, have only unlike prepare impact resistance low temperature PP plastics raw material in sulphur
Lack propylene-farnesene copolymer.
Comparative example 5
It is essentially identical with the preparation process of embodiment 1, it has only the difference is that being lacked in the raw material of preparation impact resistance low temperature PP plastics
Few asphalt base carbon fiber, silochrom, be chopped nylon fiber.
Comparative example 6
It is essentially identical with the preparation process of embodiment 1, it has only the difference is that being lacked in the raw material of preparation impact resistance low temperature PP plastics
Few asphalt base carbon fiber.
Comparative example 7
It is essentially identical with the preparation process of embodiment 1, it has only the difference is that being lacked in the raw material of preparation impact resistance low temperature PP plastics
Few silochrom.
Comparative example 8
It is essentially identical with the preparation process of embodiment 1, it has only the difference is that being lacked in the raw material of preparation impact resistance low temperature PP plastics
Be chopped nylon fiber less.
Tensile strength presses ASTM D-638 standards, and bending strength presses ASTM D-790 standards, sample preparation test is carried out, -30
Under the conditions of DEG C, low-temperature impact property is tested.
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 | Comparative example 5 | Comparative example 6 | Comparative example 7 | Comparative example 8 | |
| Tensile strength MPa | 48 | 46 | 45 | 23 | 33 | 36 | 38 | 34 | 38 | 37 | 40 |
| Bending strength | 83 | 81 | 82 | 59 | 71 | 73 | 75 | 52 | 68 | 72 | 77 |
| Cantilever beam impact strength（J/m） | 79 | 78 | 76 | 42 | 61 | 58 | 59 | 37 | 62 | 59 | 60 |
As seen from the above table：By the data of embodiment 1-3 and comparative example 1-8 as it can be seen that the filler of the present invention includes pitch base carbon
Fiber, silochrom, be chopped nylon fiber, by coordinating certain proportion, to cooperate with the low-temperature impact resistance for improving PP plastics
Energy.Asphalt base carbon fiber, silochrom, chopped nylon fiber all has good cryogenic property, and will not deform.Gross porosity silicon
There is glue larger aperture, resin can enter wherein, can preferably be dispersed in resin, further increase cryogenic property.
Asphalt base carbon fiber, the nylon fiber that is chopped have the fiber of different length, can realize preferable cooperation.
The above content is it cannot be assumed that present invention specific implementation is confined to these explanations, for the technical field of the invention
Those of ordinary skill for, under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all answers
When being considered as belonging to present invention scope of patent protection determined by the appended claims.
Claims (10)
1. a kind of impact resistance low temperature PP plastics, which is characterized in that including the following raw material：PP, low density polyethylene (LDPE), ethylene-the third
Alkene copolymer, propylene-farnesene copolymer, asphalt base carbon fiber, silochrom, be chopped nylon fiber, antioxidant, lubricant；
The asphalt base carbon fiber, silochrom, be chopped nylon fiber mass ratio be（5-10）:（2-3）:（4-6）, the low-density
The quality of polyethylene accounts for PP mass 10-20%, and the propylene content of the ethylene-propylene copolymer is 10-15%, the propylene-method
The farnesene content of Buddhist nun's alkene copolymer is 10-15%.
2. impact resistance low temperature PP plastics according to claim 1, which is characterized in that as unit of mass parts, including such as
Lower raw material：PP100 parts, 10-20 parts of low density polyethylene (LDPE), 10-20 parts of ethylene-propylene copolymer, propylene-farnesene copolymer
10-20 parts, 5-10 parts of asphalt base carbon fiber, 2-3 parts of silochrom, be chopped 4-6 parts of nylon fiber, 1-2 parts of antioxidant, lubricant
2-4 parts.
3. impact resistance low temperature PP plastics according to claim 1, which is characterized in that the asphalt base carbon fiber, gross porosity
The mass ratio of silica gel, the nylon fiber that is chopped is 7.5:2.5:5.
4. impact resistance low temperature PP plastics according to claim 1, which is characterized in that silochrom is microspheroidal gross porosity silicon
Glue, 20-50 mesh.
5. impact resistance low temperature PP plastics according to claim 1, which is characterized in that the length of the asphalt base carbon fiber
100-200um。
6. impact resistance low temperature PP plastics according to claim 1, which is characterized in that the length of the chopped nylon fiber
About 0.3-0.5mm.
7. impact resistance low temperature PP plastics according to claim 1, which is characterized in that the antioxidant is polynary be obstructed
Phenol type antioxidant.
8. impact resistance low temperature PP plastics according to claim 1, which is characterized in that the lubricant is stearic acid
At least one of calcium, paraffin, polyethylene wax.
9. a kind of preparation method of impact resistance low temperature PP plastics according to claim 1-8, which is characterized in that including with
Lower step：
（1）Ethylene-propylene copolymer, propylene-farnesene copolymer is polymerize in proportion by emulsion polymerization to be obtained；
（2）By PP, low density polyethylene (LDPE), ethylene-propylene copolymer, propylene-farnesene copolymer, asphalt base carbon fiber, gross porosity
Silica gel, be chopped nylon fiber, antioxidant, and lubricant is kneaded 5-10 minutes in high speed mixing smelting machine in proportion, obtains mixed raw material；
（3）The mixed raw material of step 2 is put into double screw extruder and is reacted, material residence time 1- in machine barrel
2min obtains reaction product,
（4）Finished product will be obtained after reaction product pelletizing, drying.
10. the preparation method of impact resistance low temperature PP plastics according to claim 9, which is characterized in that the twin-screw
Each area's temperature of extruder is as follows：One 180-200 DEG C of area, two 200-220 DEG C of areas, three 200-220 DEG C of areas, four 200-220 DEG C of areas,
Five 200-220 DEG C of areas, six 200-220 DEG C of areas, seven 200-220 DEG C of areas, eight 200-220 DEG C of areas, nine 200-220 DEG C of areas, head
200-210℃。
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3086943A1 (en) * | 2018-10-08 | 2020-04-10 | Compagnie Generale Des Etablissements Michelin | COPOLYMER OF ETHYLENE AND BETA-FARNESENE |
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| CN102079881A (en) * | 2010-12-16 | 2011-06-01 | 嘉兴安普铁路配件有限公司 | High intensity thermosetting molecule based composite material and application thereof |
| CN103073782A (en) * | 2011-10-25 | 2013-05-01 | 合肥杰事杰新材料股份有限公司 | Automobile instrument framework material and manufacturing method thereof |
| CN105273304A (en) * | 2014-07-24 | 2016-01-27 | 天津市科润特包装有限公司 | Low-temperature anti-impact modified PP/PE blending material |
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2018
- 2018-04-29 CN CN201810405375.4A patent/CN108440845A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102079881A (en) * | 2010-12-16 | 2011-06-01 | 嘉兴安普铁路配件有限公司 | High intensity thermosetting molecule based composite material and application thereof |
| CN103073782A (en) * | 2011-10-25 | 2013-05-01 | 合肥杰事杰新材料股份有限公司 | Automobile instrument framework material and manufacturing method thereof |
| CN105273304A (en) * | 2014-07-24 | 2016-01-27 | 天津市科润特包装有限公司 | Low-temperature anti-impact modified PP/PE blending material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3086943A1 (en) * | 2018-10-08 | 2020-04-10 | Compagnie Generale Des Etablissements Michelin | COPOLYMER OF ETHYLENE AND BETA-FARNESENE |
| WO2020074804A1 (en) * | 2018-10-08 | 2020-04-16 | Compagnie Generale Des Etablissements Michelin | COPOLYMER OF ETHYLENE AND β-FARNESENE |
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Application publication date: 20180824 |