CN1288910A - Resin for blow-moulded polyethylene products and blow-moulded polyethylene product using said resin - Google Patents
Resin for blow-moulded polyethylene products and blow-moulded polyethylene product using said resin Download PDFInfo
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- CN1288910A CN1288910A CN00126490A CN00126490A CN1288910A CN 1288910 A CN1288910 A CN 1288910A CN 00126490 A CN00126490 A CN 00126490A CN 00126490 A CN00126490 A CN 00126490A CN 1288910 A CN1288910 A CN 1288910A
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- lldpe
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- 239000011347 resin Substances 0.000 title claims abstract description 45
- 229920005989 resin Polymers 0.000 title claims abstract description 45
- -1 polyethylene Polymers 0.000 title abstract description 27
- 239000004698 Polyethylene Substances 0.000 title abstract description 25
- 229920000573 polyethylene Polymers 0.000 title abstract description 25
- 229920000092 linear low density polyethylene Polymers 0.000 claims abstract description 88
- 239000004707 linear low-density polyethylene Substances 0.000 claims abstract description 88
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000005977 Ethylene Substances 0.000 claims abstract description 24
- NNBZCPXTIHJBJL-UHFFFAOYSA-N decalin Chemical compound C1CCCC2CCCCC21 NNBZCPXTIHJBJL-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000002904 solvent Substances 0.000 claims abstract description 23
- 239000004711 α-olefin Substances 0.000 claims description 27
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 21
- 229920000089 Cyclic olefin copolymer Polymers 0.000 claims description 19
- 239000010410 layer Substances 0.000 claims description 19
- 238000012360 testing method Methods 0.000 claims description 13
- 238000000748 compression moulding Methods 0.000 claims description 9
- 239000002356 single layer Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 6
- 235000013305 food Nutrition 0.000 claims description 5
- 238000006116 polymerization reaction Methods 0.000 abstract description 11
- 125000004432 carbon atom Chemical group C* 0.000 abstract description 8
- 150000001336 alkenes Chemical class 0.000 abstract description 4
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 abstract description 4
- 239000002685 polymerization catalyst Substances 0.000 abstract 1
- PXXNTAGJWPJAGM-UHFFFAOYSA-N vertaline Natural products C1C2C=3C=C(OC)C(OC)=CC=3OC(C=C3)=CC=C3CCC(=O)OC1CC1N2CCCC1 PXXNTAGJWPJAGM-UHFFFAOYSA-N 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 description 20
- 238000001125 extrusion Methods 0.000 description 13
- 241000251730 Chondrichthyes Species 0.000 description 10
- 238000007664 blowing Methods 0.000 description 10
- 230000000703 anti-shock Effects 0.000 description 8
- 229920001577 copolymer Polymers 0.000 description 7
- 229910052799 carbon Inorganic materials 0.000 description 6
- 239000004793 Polystyrene Substances 0.000 description 5
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000005469 granulation Methods 0.000 description 4
- 230000003179 granulation Effects 0.000 description 4
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 description 3
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 description 3
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 description 3
- 238000006555 catalytic reaction Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 235000010746 mayonnaise Nutrition 0.000 description 3
- 239000008268 mayonnaise Substances 0.000 description 3
- 229920002223 polystyrene Polymers 0.000 description 3
- RFFLAFLAYFXFSW-UHFFFAOYSA-N 1,2-dichlorobenzene Chemical compound ClC1=CC=CC=C1Cl RFFLAFLAYFXFSW-UHFFFAOYSA-N 0.000 description 2
- ZGEGCLOFRBLKSE-UHFFFAOYSA-N 1-Heptene Chemical compound CCCCCC=C ZGEGCLOFRBLKSE-UHFFFAOYSA-N 0.000 description 2
- AFFLGGQVNFXPEV-UHFFFAOYSA-N 1-decene Chemical compound CCCCCCCCC=C AFFLGGQVNFXPEV-UHFFFAOYSA-N 0.000 description 2
- RYPKRALMXUUNKS-UHFFFAOYSA-N 2-Hexene Natural products CCCC=CC RYPKRALMXUUNKS-UHFFFAOYSA-N 0.000 description 2
- RWNKSTSCBHKHTB-UHFFFAOYSA-N Hexachloro-1,3-butadiene Chemical compound ClC(Cl)=C(Cl)C(Cl)=C(Cl)Cl RWNKSTSCBHKHTB-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000007334 copolymerization reaction Methods 0.000 description 2
- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Natural products CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 2
- GQEZCXVZFLOKMC-UHFFFAOYSA-N 1-hexadecene Chemical compound CCCCCCCCCCCCCCC=C GQEZCXVZFLOKMC-UHFFFAOYSA-N 0.000 description 1
- 238000001644 13C nuclear magnetic resonance spectroscopy Methods 0.000 description 1
- WEPNJTDVIIKRIK-UHFFFAOYSA-N 2-methylhept-2-ene Chemical compound CCCCC=C(C)C WEPNJTDVIIKRIK-UHFFFAOYSA-N 0.000 description 1
- UIIMVYYDGLHIAO-UHFFFAOYSA-N 2-methylnon-2-ene Chemical compound CCCCCCC=C(C)C UIIMVYYDGLHIAO-UHFFFAOYSA-N 0.000 description 1
- KNIRLWRQSSLZCZ-UHFFFAOYSA-N 3-ethyloct-3-ene Chemical compound CCCCC=C(CC)CC KNIRLWRQSSLZCZ-UHFFFAOYSA-N 0.000 description 1
- YHQXBTXEYZIYOV-UHFFFAOYSA-N 3-methylbut-1-ene Chemical compound CC(C)C=C YHQXBTXEYZIYOV-UHFFFAOYSA-N 0.000 description 1
- RGTDIFHVRPXHFT-UHFFFAOYSA-N 3-methylnon-3-ene Chemical compound CCCCCC=C(C)CC RGTDIFHVRPXHFT-UHFFFAOYSA-N 0.000 description 1
- LDTAOIUHUHHCMU-UHFFFAOYSA-N 3-methylpent-1-ene Chemical compound CCC(C)C=C LDTAOIUHUHHCMU-UHFFFAOYSA-N 0.000 description 1
- YCTDZYMMFQCTEO-UHFFFAOYSA-N 3-octene Chemical compound CCCCC=CCC YCTDZYMMFQCTEO-UHFFFAOYSA-N 0.000 description 1
- YOSVKFVIDJCPBC-UHFFFAOYSA-N C=CCCCC.CC1=C(C(=O)O)C=CC=C1C(=O)O Chemical compound C=CCCCC.CC1=C(C(=O)O)C=CC=C1C(=O)O YOSVKFVIDJCPBC-UHFFFAOYSA-N 0.000 description 1
- OEANSHQKEMMQQJ-UHFFFAOYSA-N C=CCCCCCCC.CC1=C(C(=O)O)C=CC=C1C(=O)O Chemical compound C=CCCCCCCC.CC1=C(C(=O)O)C=CC=C1C(=O)O OEANSHQKEMMQQJ-UHFFFAOYSA-N 0.000 description 1
- DPSMVUDHLNREAG-UHFFFAOYSA-N CCCCCC=C.CN(C)C Chemical compound CCCCCC=C.CN(C)C DPSMVUDHLNREAG-UHFFFAOYSA-N 0.000 description 1
- 241001293164 Eutrema japonicum Species 0.000 description 1
- 235000007688 Lycopersicon esculentum Nutrition 0.000 description 1
- 239000004902 Softening Agent Substances 0.000 description 1
- 240000003768 Solanum lycopersicum Species 0.000 description 1
- 235000000760 Wasabia japonica Nutrition 0.000 description 1
- 239000011954 Ziegler–Natta catalyst Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- GVRWIAHBVAYKIZ-UHFFFAOYSA-N dec-3-ene Chemical compound CCCCCCC=CCC GVRWIAHBVAYKIZ-UHFFFAOYSA-N 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- VXNZUUAINFGPBY-UHFFFAOYSA-N ethyl ethylene Natural products CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 235000008960 ketchup Nutrition 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical group CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 235000015067 sauces Nutrition 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/04—Extrusion blow-moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
- B65D1/0207—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by material, e.g. composition, physical features
- B65D1/0215—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by material, e.g. composition, physical features multilayered
-
- 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
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Laminated Bodies (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
A resin for a polyethylene blow molded article comprises linear low-density polyethylene having a density (ASTM D 1505) of not more than 0.930 g/cm, an intrinsic viscosity (eta), as measured in a decalin solvent at 135 DEG C, of not less than 1.6 dl/g and a molecular weight distribution (Mw/Mn), as measured by GPC, of not less than 4. The linear low-density polyethylene is obtained by, for example, two-stage polymerization of ethylene and an a-olefin of 3 to 20 carbon atoms in the presence of an olefin polymerization catalyst. The polyethylene blow molded article of the invention has a layer comprising the above-mentioned resin of the invention. The resin for a polyethylene blow molded article can provide a single-layer- or multi-layer polyethylene blow molded article, e.g., soft bottle having good appearance free from sharkskin and excellent drop impact resistance.
Description
The present invention relates to a kind of blow moulded polyethyene goods that are used for the resin of blow moulded polyethyene goods and use this resin.More particularly, the present invention relates to a kind of blow moulded polyethyene goods that are used to have the resin of good anti-shock of a fall and no shark skin shape appearance and suitable work such as the blow moulded polyethyene goods of the food product containers of the soft bottle of mayonnaise and use this resin.
Hp-ldpe that the alpha-olefin that uses ethene and 3 or more a plurality of carbon atoms up to now makes through copolymerization with single stage method in the presence of Ziegler-Natta catalyst or LLDPE bottle be widely used as the food product containers such as the soft bottle that holds mayonnaise already.
Yet, use the bottle of hp-ldpe not have enough anti-shock of a fall, use the bottle of LLDPE to have shark skin shape surface simultaneously, thereby do not have satisfactory appearance.
In this case, the present inventor has carried out conscientious research to address these problems, they find that the soft bottle with good appearance and good anti-shock of a fall can be made by LLDPE as a result, described polyethylene is that ethene and the alpha-olefin that contains 3-20 carbon atom make through two-stage polymerization in the presence of olefin polymerization catalysis such as hitherto known Z-type catalyst, and this poly density (ASTM D 1505) is not more than 0.930g/cm
3, the limiting viscosity (η) that records in 135 ℃ naphthalane solvent is not less than 1.6dl/g and the molecular weight distribution (Mw/Mn) that recorded by GPC is not less than 4.
The invention is intended to solve this problem relevant with above-mentioned prior art, an object of the present invention is to provide a kind of resin that is used for the blow moulded polyethyene goods, this resin can make has excellent appearance and anti-shock of a fall and the suitable blow moulded polyethyene goods of making single or multiple lift container such as soft bottle.Another object of the present invention provides a kind of blow moulded polyethyene goods of being made by this resin.
The resin that is used for blow moulded polyethyene goods of the present invention comprises density (ASTM D 1505) and is not more than 0.930g/cm
3, the limiting viscosity (η) that records in 135 ℃ naphthalane solvent is not less than 1.6dl/g and the molecular weight distribution (Mw/Mn) that recorded by GPC is not less than 4 LLDPE (A).
LLDPE (A) can be the linear, low density ethylene/alpha-olefin copolymer that ethene and the alpha-olefin that contains 3-20 carbon atom make through two-stage polymerization in the presence of olefin polymerization catalysis; Perhaps it can be the blend of linear ethylene/alpha-olefin copolymer (b) of the linear ethylene/alpha-olefin copolymer (a) of 5-95 weight % and 5-95 weight %, and the density of described multipolymer (a) (ASTM D 1505) is 0.860-0.975g/cm
3, the limiting viscosity (η) that records in 135 ℃ naphthalane solvent is 1.0-6.0 for 0.01-1.80dl/g and the molecular weight distribution (Mw/Mn) that recorded by GPC, the density of described multipolymer (b) (ASTM D 1505) is 0.860-0.975g/cm
3, the limiting viscosity (η) that records in 135 ℃ naphthalane solvent is 1.0-6.0 for 1.81-10.0dl/g and the molecular weight distribution (Mw/Mn) that recorded by GPC.
LLDPE that can the present invention is used (A) is blow molded into monolayer bottles (internal capacity: 780 milliliters, tare weight: 25 grams), this bottle drop height in the test of 5 repeated fall in-18 ℃ environment is not less than 1.5 meters and the ethylene glycol that pours into and does not spill in bottle.
Blow moulded polyethyene goods of the present invention have one deck and contain the above-mentioned layer that is used for the resin of blow moulded polyethyene goods.
Blow moulded polyethyene goods of the present invention can have multilayered structure.
Blow moulded polyethyene goods of the present invention should be used as food product containers.
Blow moulded polyethyene goods of the present invention can be a kind of goods that one deck contains the layer of LLDPE (A) that have, and the stretching yield stress (ASTM D 638) of the pressed sheet of 2 mm thick that it is made through compression moulding is to be not more than 0.6 millimeter part for being not more than 15MPa and containing all total thickness that constitute the layer of blow-molded articles.This blow moulded polyethyene goods are commonly referred to soft bottle.
Below detailed description is used for the resin of blow moulded polyethyene goods of the present invention and the blow moulded polyethyene goods of this resin of use.
The resin that is used for blow moulded polyethyene goods of the present invention comprises the used LLDPE (A) of preparation blow moulded polyethyene goods of the present invention.
Blow moulded polyethyene goods of the present invention have one deck and contain density, limiting viscosity and molecular weight distribution (Mw/Mn) layer of the LLDPE in specified range (A) respectively.This blow-molded article can have the two-layer or more multi-layered multilayered structure of single layer structure.
LLDPE (A)
The used LLDPE (A) of the present invention is ethene and the multipolymer that contains the alpha-olefin of 3-20 carbon atom, and its density (ASTM D 1505) is not more than 0.930g/cm
3, be generally 0.860-0.930g/cm
3, be preferably 0.900-0.930g/cm
3, 0.915-0.925g/cm more preferably
3The limiting viscosity (η) that records in 135 ℃ naphthalane solvent is not less than 1.6dl/g, be generally 1.6-10.0dl/g, be preferably 1.6-4.0dl/g, more preferably 1.8-2.5dl/g and the molecular weight distribution (Mw/Mn) that recorded by GPC are not less than 4, are generally 4-20, be preferably 4.5-13, more preferably 5.0-10.0.When the LLDPE (A) of using density, limiting viscosity and molecular weight distribution (Mw/Mn) in above-mentioned scope, can obtain to have the blow moulded polyethyene goods such as the soft bottle of good appearance and good anti-shock of a fall.
The GPC-150C that uses Millipore Co. to make measures molecular weight distribution (Mw/Mn) as follows.
In the diameter of post is that 72 millimeters and length are in 600 millimeters the TSK GNH HT separator column, at column temperature is that 140 ℃ and sample injection rate are to use orthodichlorobenzene (available from WakoJunyaku Kogyo K.K.) as moving phase and use the BHT of 0.025 weight % (available from Takeda ChemicalIndustries, (concentration: 0.1 weight %) speed with 1.0 ml/min moves Ltd.) to make sample as antioxidant under the condition of 500 microlitres.Use Differential Scanning Calorimeter as detector.As polystyrene standard, use polystyrene available from TOSOHK.K. as Mw＜1000 and Mw＞4 * 10
6Polystyrene, use polystyrene available from PressureChemical Co. as 1000≤Mw≤4 * 10
6Polystyrene.
The example that contains the alpha-olefin of 3-20 carbon atom comprises propylene, 1-butylene, the 1-amylene, 2-methyl-1-butene alkene, 3-methyl-1-butene, the 1-hexene, the 3-Methyl-1-pentene, 4-methyl-1-pentene, 3,3-dimethyl-1-butylene, the 1-heptene, methyl isophthalic acid-hexene, dimethyl-1-amylene, trimethylammonium-1-butylene, ethyl-1-amylene, the 1-octene, Methyl-1-pentene, dimethyl-1-hexene, trimethylammonium-1-amylene, ethyl-1-hexene, methylethyl-1-amylene, diethyl-1-butylene, propyl group-1-amylene, 1-decene, methyl isophthalic acid-nonene, dimethyl-1-octene, trimethylammonium-1-heptene, ethyl-1-octene, methylethyl-1-heptene, diethyl-1-hexene, 1-dodecylene and cetene (1-hexadodecene).
These alpha-olefins can be separately or two or more combine use.
The used LLDPE (A) of the present invention is preferably ethylene/propene copolymer, ethene/butene-1 copolymer, ethylene/pentene-1 copolymer, ethene/1-hexene copolymer, ethene/4 methyl 1 pentene copolymer or ethene/1-octene copolymer.
In LLDPE (A), be generally 65-99 weight % from the unitary amount of the formation of ethene, be preferably 70-98 weight %, 75-96 weight % more preferably, come the unitary amount of formation of the alpha-olefin of a self-contained 3-20 carbon atom to be generally 1-35 weight %, be preferably 2-30 weight %, more preferably 4-25 weight %.
Measuring temperature is that 120 ℃, survey frequency are that 25.05MHz, spectrum width are 1500Hz, pulse repetition time to be that 4.2 seconds and pulse width are under the condition of 6 microseconds, and about 200 milligrams of ethylene/alpha-olefin copolymers are dissolved in diameter equably is the sample that makes in 1 milliliter of hexachlorobutadiene of sample hose of 10 millimeters by measuring usually
13C-NMR composes to determine the composition of ethylene/alpha-olefin copolymer.
LLDPE (A) with above-mentioned performance can make by copolymerization of ethylene in the presence of olefin polymerization catalysis such as hitherto known Z-type catalyst and the alpha-olefin that contains 3-20 carbon atom.
LLDPE (A) can make by the ethylene/alpha-olefin copolymer of two or more above-mentioned acquisitions of blend.
The blend of multipolymer can use forcing machine to carry out, and it can make two or more ethylene/alpha-olefin copolymers with the two-stage polymerization method continuously in a polymerization reactor, randomly carry out with the forcing machine granulation subsequently.
The used LLDPE (A) of the present invention for example is the blend of following two kinds of multipolymers better,
Linear ethylene/alpha-olefin copolymer (a) of 5-95 weight %, its density (ASTM D 1505) is 0.860-0.975g/cm
3, the limiting viscosity (η) that in 135 ℃ naphthalane solvent, records for 0.01-1.80dl/g and the molecular weight distribution (Mw/Mn) that records by GPC for 1.0-6.0 and
Linear ethylene/alpha-olefin copolymer (b) of 5-95 weight %, its density (ASTM D 1505) is 0.860-0.975g/cm
3, the limiting viscosity (η) that records in 135 ℃ naphthalane solvent is 1.0-6.0 for 1.81-10.0dl/g and the molecular weight distribution (Mw/Mn) that recorded by GPC.
Linear ethylene/alpha-olefin copolymer (a) can be separately or two or more combine use, same linear ethylene/alpha-olefin copolymer (b) also can be separately or two or more combine use.
LLDPE that can the present invention is used (A) is blow molded into monolayer bottles (internal capacity: 780 milliliters, tare weight: 25 grams), this bottle drop height in the test of 5 repeated fall in-18 ℃ environment is not less than that 1.5 meters and the ethylene glycol that pours into are non-leakage to be gone out in bottle.In this drop shutter test, the bottle that fills ethylene glycol is repeated to drop at the bottom of the same height on the ground 5 times down.If ethylene glycol does not spill, then bottle passes through drop shutter test.
The resin that is used for blow moulded polyethyene goods of the present invention can comprise the various additives except LLDPE (A), and it is measured to purpose of the present invention is not had disadvantageous effect.
The example of additive comprises filler, Weather stablizer, thermo-stabilizer, static inhibitor, slipproofing agent, antifogging agent, lubricant, pigment, dyestuff, nucleator, softening agent, fire retardant and hydrochloric acid absorbent.
The blow moulded polyethyene goods
Blow moulded polyethyene goods of the present invention have the layer that one deck contains LLDPE (A), and it can be single layer structure or multilayered structure.Usually, the blow-molded article of single layer structure is as monolayered vessel, and the blow-molded article of multilayered structure is as laminated vessel.
When laminated vessel of the present invention for example had three-decker, the surfaces externally and internally layer of container can be made by LLDPE (A), and the middle layer between these upper layers can be made by the resin such as the ethylene/vinyl alcohol copolymer.
Blow moulded polyethyene goods of the present invention can be made by hitherto known blow moiding method.The various methods that are used for blowing are arranged, these methods generally can be divided into extrusion blow molded, two step blowing and injection mouldings.For the present invention, extrusion blow molded is preferred especially the employing.
Be used for the resin of blow moulded polyethyene goods of the present invention by employing, can obtain to have the blow moulded polyethyene goods (as soft bottle) of the single or multiple lift structure of the good appearance on no shark skin shape surface and good anti-shock of a fall.
Blow moulded polyethyene goods of the present invention have the layer that one deck contains the invention described above resin, and these goods have the good appearance on no shark skin shape surface and good anti-shock of a fall like this.
Therefore, blow moulded polyethyene goods of the present invention are suitable for the container of doing such as food such as mayonnaise, tomato ketchup, Shan Yu sauce or wasabis.
Embodiment
The present invention further describes with reference to following embodiment, but what should understand is that the present invention is not limited to these embodiment.
Preparation embodiment 1
Preparation LLDPE (LLDPE (1))
In polymerization reactor,, they are carried out granulation, make density (ASTM D 1505) and be 0.920g/cm continuously through two kinds of polyethylene of solution polymerization (a1) and polyethylene (b1)
3, the limiting viscosity (η) that records in 135 ℃ naphthalane solvent is 5 LLDPE (LLDPE (1)) for 2.1dl/g and the molecular weight distribution (Mw/Mn) that recorded by GPC.
Polyethylene (a1) is that a kind of density (ASTM D 1505) is 0.920g/cm
3, the limiting viscosity (η) that records in 135 ℃ naphthalane solvent is linear ethylene/alpha-olefin copolymer of 2.3 for 0.5dl/g and the molecular weight distribution (Mw/Mn) that recorded by GPC.
Polyethylene (b1) is that a kind of density (ASTM D 1505) is 0.920g/cm
3, the limiting viscosity (η) that records in 135 ℃ naphthalane solvent is linear ethylene/alpha-olefin copolymer of 2.8 for 3.6dl/g and the molecular weight distribution (Mw/Mn) that recorded by GPC.
Polyethylene (a1) is 50/50 with the weight ratio ((a1)/(b1)) of polyethylene (b1).
Preparation embodiment 2
Preparation LLDPE (LLDPE (2))
In polymerization reactor,, they are carried out granulation, make density (ASTM D 1505) and be 0.920g/cm continuously through two kinds of polyethylene of solution polymerization (a2) and polyethylene (b2)
3, the limiting viscosity (η) that records in 135 ℃ naphthalane solvent is 5 LLDPE (LLDPE (2)) for 1.8dl/g and the molecular weight distribution (Mw/Mn) that recorded by GPC.
Polyethylene (a2) is that a kind of density (ASTM D 1505) is 0.920g/cm
3, the limiting viscosity (η) that records in 135 ℃ naphthalane solvent is linear ethylene/alpha-olefin copolymer of 2.3 for 0.5dl/g and the molecular weight distribution (Mw/Mn) that recorded by GPC.
Polyethylene (b2) is that a kind of density (ASTM D 1505) is 0.920g/cm
3, the limiting viscosity (η) that records in 135 ℃ naphthalane solvent is linear ethylene/alpha-olefin copolymer of 2.8 for 3.1dl/g and the molecular weight distribution (Mw/Mn) that recorded by GPC.
Polyethylene (a2) is 50/50 with the weight ratio ((a2)/(b2)) of polyethylene (b2).
Preparation embodiment 3
Preparation LLDPE (LLDPE (3))
In polymerization reactor,, they are carried out granulation, make density (ASTM D 1505) and be 0.920g/cm continuously through two kinds of polyethylene of solution polymerization (a3) and polyethylene (b3)
3, the limiting viscosity (η) that records in 135 ℃ naphthalane solvent is 4 LLDPE (LLDPE (3)) for 1.6dl/g and the molecular weight distribution (Mw/Mn) that recorded by GPC.
Polyethylene (a3) is that a kind of density (ASTM D 1505) is 0.920g/cm
3, the limiting viscosity (η) that records in 135 ℃ naphthalane solvent is linear ethylene/alpha-olefin copolymer of 2.3 for 0.5dl/g and the molecular weight distribution (Mw/Mn) that recorded by GPC.
Polyethylene (b3) is that a kind of density (ASTM D 1505) is 0.920g/cm
3, the limiting viscosity (η) that records in 135 ℃ naphthalane solvent is linear ethylene/alpha-olefin copolymer of 2.5 for 2.7dl/g and the molecular weight distribution (Mw/Mn) that recorded by GPC.
Polyethylene (a3) is 50/50 with the weight ratio ((a3)/(b3)) of polyethylene (b3).
Preparation embodiment 4
Preparation LLDPE (LLDPE (4))
(ASTM D 1505) is 0.920g/cm through solution polymerization density
3, the limiting viscosity (η) that records in 135 ℃ naphthalane solvent is 3 LLDPE (LLDPE (4)) for 1.8dl/g and the molecular weight distribution (Mw/Mn) that recorded by GPC.
Preparation embodiment 5
Preparation LLDPE (LLDPE (5))
(ASTM D 1505) is 0.935g/cm through solution polymerization density
3, the limiting viscosity (η) that records in 135 ℃ naphthalane solvent is 5 LLDPE (LLDPE (5)) for 2.1dl/g and the molecular weight distribution (Mw/Mn) that recorded by GPC.
Embodiment 1
Use extrusion blow molded machine (to make by Nippon Seiko K.K., model: JEB-15) blowing prepares the LLDPE (LLDPE (1)) that embodiment 1 makes under following blowing conditions, and obtaining internal capacity and be 780 milliliters and weight is the bottles (individual layer blow-molded article) of 25 grams.
Blowing conditions
The resin temperature of LLDPE (LLDPE (1)): 200 ℃
Resin pressure: 320kg/m
2
Resin extruded speed: 50kg/hr
Die temperature: 20 ℃
Bottle to above-mentioned acquisition carries out the repeated fall test as follows.The results are shown in Table 1.
Testing method
At internal capacity is that 780 milliliters and weight are to pour into ethylene glycol in the monolayer bottles of 25 grams.In-18 ℃ environment, with bottle repeated fall 5 times down at the bottom of the given height.In 5 repeated fall tests, measure the maximum drop height that ethylene glycol does not spill in the bottle, this maximum drop height is regarded as the index of the anti-shock of a fall of bottle.The ground that bottle falls is concrete floor, and horizontal positioned thickness is 2 millimeters or thicker iron plate thereon.
Press ASTM D1928 compression moulding LLDPE (LLDPE (1)) then, make thickness and be 2 millimeters pressed sheet.Press the stretching yield stress that ASTM D638 measures pressed sheet.The results are shown in Table 1.
The above-mentioned bottle that makes does not have shark skin shape surface, demonstrates good surface appearance.
Embodiment 2
Undertaken by embodiment 1 identical mode extrusion blow molded, the LLDPE (LLDPE (1)) that the LLDPE (LLDPE (2)) that different is makes with preparation embodiment 2 replaces preparation embodiment 1 to make.So just having obtained internal capacity and be 780 milliliters and weight is the bottles (individual layer blow-molded article) of 25 grams.
Extrusion blow molded condition is as follows.
Blowing conditions
The resin temperature of LLDPE (LLDPE (2)): 200 ℃
Resin pressure: 280kg/m
2
Resin extruded speed: 50kg/hr
Die temperature: 20 ℃
Bottle to above-mentioned acquisition carries out the repeated fall test as stated above.The results are shown in Table 1.
Press ASTM D1928 compression moulding LLDPE (LLDPE (2)) then, make thickness and be 2 millimeters pressed sheet.Press the stretching yield stress that ASTM D638 measures pressed sheet.The results are shown in Table 1.
The above-mentioned bottle that makes does not have shark skin shape surface, demonstrates good surface appearance.
Embodiment 3
Undertaken by embodiment 1 identical mode extrusion blow molded, the LLDPE (LLDPE (1)) that the LLDPE (LLDPE (3)) that different is makes with preparation embodiment 3 replaces preparation embodiment 1 to make.So just having obtained internal capacity and be 780 milliliters and weight is the bottles (individual layer blow-molded article) of 25 grams.
Extrusion blow molded condition is as follows.
Blowing conditions
The resin temperature of LLDPE (LLDPE (3)): 200 ℃
Resin pressure: 250kg/m
2
Resin extruded speed: 50kg/hr
Die temperature: 20 ℃
Bottle to above-mentioned acquisition carries out the repeated fall test as stated above.The results are shown in Table 1.
Press ASTM D1928 compression moulding LLDPE (LLDPE (3)) then, make thickness and be 2 millimeters pressed sheet.Press the stretching yield stress that ASTM D638 measures pressed sheet.The results are shown in Table 1.
The above-mentioned bottle that makes does not have shark skin shape surface, demonstrates good surface appearance.
Comparative Examples 1
Undertaken extrusion blow moldedly by embodiment 1 identical mode, different is is 0.920g/cm with density (ASTM D 1505)
3, the limiting viscosity (η) that records in 135 ℃ naphthalane solvent is the LLDPE (LLDPE (1)) that 5 hp-ldpe (HPLDPE) replaces preparation embodiment 1 to make for 1.3dl/g and the molecular weight distribution (Mw/Mn) that recorded by GPC.So just having obtained internal capacity and be 780 milliliters and weight is the bottles (individual layer blow-molded article) of 25 grams.
Extrusion blow molded condition is as follows.
Blowing conditions
The resin temperature of hp-ldpe (HPLDPE): 200 ℃
Resin pressure: 300kg/m
2
Resin extruded speed: 50kg/hr
Die temperature: 20 ℃
Bottle to above-mentioned acquisition carries out the repeated fall test as stated above.The results are shown in Table 1.
Press ASTM D1928 compression moulding hp-ldpe (HPLDPE) then, make thickness and be 2 millimeters pressed sheet.Press the stretching yield stress that ASTM D638 measures pressed sheet.The results are shown in Table 1.
The above-mentioned bottle that makes does not have shark skin shape surface, demonstrates good surface appearance.
Comparative Examples 2
Undertaken by embodiment 1 identical mode extrusion blow molded, the LLDPE (LLDPE (1)) that the LLDPE (LLDPE (4)) that different is makes with preparation embodiment 4 replaces preparation embodiment 1 to make.So just having obtained internal capacity and be 780 milliliters and weight is the bottles (individual layer blow-molded article) of 25 grams.
Extrusion blow molded condition is as follows.
Blowing conditions
The resin temperature of LLDPE (LLDPE (4)): 210 ℃
Resin pressure: 400kg/m
2
Resin extruded speed: 50kg/hr
Die temperature: 20 ℃
Bottle to above-mentioned acquisition carries out the repeated fall test as stated above.The results are shown in Table 1.
Press ASTM D1928 compression moulding LLDPE (LLDPE (4)) then, make thickness and be 2 millimeters pressed sheet.Press the stretching yield stress that ASTM D638 measures pressed sheet.The results are shown in Table 1.
The above-mentioned bottle that makes has shark skin shape surface.
Comparative Examples 3
Undertaken by embodiment 1 identical mode extrusion blow molded, the LLDPE (LLDPE (1)) that the LLDPE (LLDPE (5)) that different is makes with preparation embodiment 5 replaces preparation embodiment 1 to make.So just having obtained internal capacity and be 780 milliliters and weight is the bottles (individual layer blow-molded article) of 25 grams.
Extrusion blow molded condition is as follows.
Blowing conditions
The resin temperature of LLDPE (LLDPE (5)): 210 ℃
Resin pressure: 400kg/m
2
Resin extruded speed: 50kg/hr
Die temperature: 20 ℃
Bottle to above-mentioned acquisition carries out the repeated fall test as stated above.The results are shown in Table 1.
Press ASTM D1928 compression moulding LLDPE (LLDPE (5)) then, make thickness and be 2 millimeters pressed sheet.Press the stretching yield stress that ASTM D638 measures pressed sheet.The results are shown in Table 1.
The above-mentioned bottle that makes does not have shark skin shape surface, demonstrates good surface appearance.
Table 1
(*) stretching yield stress: the stretching yield stress of the pressed sheet of 2 mm thick that obtain by compression moulding (line style) new LDPE (film grade)
Claims (7)
1. resin that is used for the blow moulded polyethyene goods, it comprises density (ASTM D 1505) and is not more than 0.930g/cm
3, the limiting viscosity (η) that records in 135 ℃ naphthalane solvent is not less than 1.6dl/g and the molecular weight distribution (Mw/Mn) that recorded by GPC is not less than 4 LLDPE (A).
2. the resin that is used for the blow moulded polyethyene goods as claimed in claim 1, wherein LLDPE (A) is the blend of following two kinds of multipolymers:
Linear ethylene/alpha-olefin copolymer (a) of 5-95 weight %, its density (ASTM D 1505) is 0.860-0.975g/cm
3, the limiting viscosity (η) that in 135 ℃ naphthalane solvent, records for 0.01-1.80dl/g and the molecular weight distribution (Mw/Mn) that records by GPC for 1.0-6.0 and
Linear ethylene/alpha-olefin copolymer (b) of 5-95 weight %, its density (ASTM D 1505) is 0.860-0.975g/cm
3, the limiting viscosity (η) that records in 135 ℃ naphthalane solvent is 1.0-6.0 for 1.81-10.0dl/g and the molecular weight distribution (Mw/Mn) that recorded by GPC.
3. the resin that is used for the blow moulded polyethyene goods as claimed in claim 1 or 2, wherein LLDPE (A) is to be blow molded into monolayer bottles (internal capacity: 780 milliliters, tare weight: LLDPE 25 grams), the described bottle drop height in 5 repeated fall tests in-18 ℃ environment is not less than 1.5 meters and the ethylene glycol that pours into and does not spill in bottle.
4. blow moulded polyethyene goods, it has one deck and contains right and require each described layer that is used for the resin of blow moulded polyethyene goods in 1 to 3.
5. blow moulded polyethyene goods as claimed in claim 4, it has multilayered structure.
6. as claim 4 or 5 described blow moulded polyethyene goods, it is as food product containers.
7. as each described blow moulded polyethyene goods of claim 4 to 6, it has the layer that one deck contains LLDPE (A), and the stretching yield stress (ASTM D638) of the pressed sheet of 2 mm thick that it is made through compression moulding is to be not more than 0.6 millimeter part for being not more than 15MPa and containing all total thickness that constitute the layer of blow-molded articles.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24732399 | 1999-09-01 | ||
| JP247323/99 | 1999-09-01 | ||
| JP247323/1999 | 1999-09-01 | ||
| JP2000234146A JP4430799B2 (en) | 1999-09-01 | 2000-08-02 | Polyethylene hollow molded body resin and polyethylene hollow molded body using the resin |
| JP234146/2000 | 2000-08-02 | ||
| JP234146/00 | 2000-08-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1288910A true CN1288910A (en) | 2001-03-28 |
| CN1300233C CN1300233C (en) | 2007-02-14 |
Family
ID=26538211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001264907A Expired - Fee Related CN1300233C (en) | 1999-09-01 | 2000-09-01 | Resin for blow-moulded polyethylene products and blow-moulded polyethylene product using said resin |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP4430799B2 (en) |
| KR (1) | KR100610171B1 (en) |
| CN (1) | CN1300233C (en) |
| ID (1) | ID29316A (en) |
| TW (1) | TW553952B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106633325A (en) * | 2015-10-28 | 2017-05-10 | 中国石油化工股份有限公司 | Polyethylene composition and durable film |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EA022658B1 (en) * | 2010-05-13 | 2016-02-29 | Юнилевер Нв | Injection molded tube |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6016880A (en) * | 1983-07-08 | 1985-01-28 | 今野 富夫 | Manufacture of heat insulating concrete board |
| JPH07116251B2 (en) * | 1985-03-11 | 1995-12-13 | 東ソー株式会社 | Method for producing modified polyethylene |
| JP3355534B2 (en) * | 1992-09-10 | 2002-12-09 | 住友化学工業株式会社 | Ethylene-α-olefin copolymer and molded article molded using the copolymer |
| JPH1180259A (en) * | 1997-09-10 | 1999-03-26 | Tosoh Corp | Polyethylene resin for large blow-molded product, its production and large blow-molded container |
-
2000
- 2000-08-02 JP JP2000234146A patent/JP4430799B2/en not_active Expired - Lifetime
- 2000-08-23 KR KR1020000048952A patent/KR100610171B1/en not_active IP Right Cessation
- 2000-08-31 ID IDP20000736D patent/ID29316A/en unknown
- 2000-08-31 TW TW089117751A patent/TW553952B/en not_active IP Right Cessation
- 2000-09-01 CN CNB001264907A patent/CN1300233C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106633325A (en) * | 2015-10-28 | 2017-05-10 | 中国石油化工股份有限公司 | Polyethylene composition and durable film |
| CN106633325B (en) * | 2015-10-28 | 2019-04-16 | 中国石油化工股份有限公司 | A kind of polyethylene composition and durable membrane |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001139630A (en) | 2001-05-22 |
| TW553952B (en) | 2003-09-21 |
| CN1300233C (en) | 2007-02-14 |
| ID29316A (en) | 2001-08-16 |
| KR100610171B1 (en) | 2006-08-09 |
| KR20010050173A (en) | 2001-06-15 |
| JP4430799B2 (en) | 2010-03-10 |
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