CN103210038A - Polypropylene resin composition for thin wall injection molding, molded article and container - Google Patents
Polypropylene resin composition for thin wall injection molding, molded article and container Download PDFInfo
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- CN103210038A CN103210038A CN2011800551899A CN201180055189A CN103210038A CN 103210038 A CN103210038 A CN 103210038A CN 2011800551899 A CN2011800551899 A CN 2011800551899A CN 201180055189 A CN201180055189 A CN 201180055189A CN 103210038 A CN103210038 A CN 103210038A
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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
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- C—CHEMISTRY; METALLURGY
- 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
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0083—Nucleating agents promoting the crystallisation of the polymer matrix
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
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- 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
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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
- C08F255/00—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00
- C08F255/02—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00 on to polymers of olefins having two or three carbon atoms
- C08F255/04—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00 on to polymers of olefins having two or three carbon atoms on to ethene-propene copolymers
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- C—CHEMISTRY; METALLURGY
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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- C—CHEMISTRY; METALLURGY
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/05—Alcohols; Metal alcoholates
- C08K5/053—Polyhydroxylic alcohols
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- C—CHEMISTRY; METALLURGY
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
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- C—CHEMISTRY; METALLURGY
- 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
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
- C08K5/521—Esters of phosphoric acids, e.g. of H3PO4
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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
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/06—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0001—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2823/00—Use of polyalkenes or derivatives thereof as mould material
- B29K2823/10—Polymers of propylene
- B29K2823/12—PP, i.e. polypropylene
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
Abstract
This polypropylene resin composition for thin wall injection molding comprises a propylene resin material and a clarifying nucleating agent, the limiting viscosity of xylene solubles being 0.9-1.3 dl/g, and the melt flow rate measured under conditions of a temperature of 230 DEG C and a load of 21.6 N being 30-70 g/10 mins. In addition, the propylene resin material is an ethylene propylene copolymer with an ethylene unit of 1.2 mass% or less that is polymerized or an ethylene 1-butene copolymer with an ethylene unit of 74-86 mass% polymerized under the presence of homopolypropylene. Further, the ethylene 1-butene copolymer content is 22-32 mass% when the polypropylene resin composition for thin wall injection molding is 100 mass%. According to the present invention, a polypropylene resin composition for thin wall injection molding which has excellent blush resistance, low temperature impact strength and thin wall moldability can be provided.
Description
Technical field
The present invention relates to be applicable to the injection molding polypropylene resin composite of thin-walled.In addition, the present invention relates to the moulding product that to obtain after the above-mentioned polypropylene resin composite injection molding and the container that uses these moulding product.
The application based on and require Japanese patent application 2010-257864 number right of priority proposing on November 18th, 2010, its content quotation is in this.
Background technology
Owing to being polypropylene resin composite cheapness and the mechanical properties excellence of principal constituent with the polypropylene, therefore be used to various purposes, also be widely used in containers for food use etc.Moulding product such as containers for food use form by the injection molding manufacturing, require to make its thin-walled property in order to make the lightweight of moulding product.
As the polypropylene resin composite for the manufacture of container, the resin combination that contains polypropylene and ethene/butene-1 copolymer is disclosed in the patent documentation 1.
The resin combination that contains polypropylene, ethylene/propene copolymer and nucleator is disclosed in the patent documentation 2.
The resin combination that contains polypropylene, high density polyethylene(HDPE) and lubricant is disclosed in the patent documentation 3.
The prior art document
Patent documentation
Patent documentation 1: the spy opens flat 7-3087 communique
Patent documentation 2: the spy opens flat 9-31264 communique
Patent documentation 3: the spy opens flat 10-139977 communique
Summary of the invention
The technical problem that invention will solve
But, after the resin combination thin-walled injection molding sometimes of record moulding product when taking out, mould can be produced flexing (seat in the wrong (buckling)) in the patent documentation 1, and, owing to contraction produces depression (so-called " shrink mark ").For occurring the bad resin combination of aforesaid moulding in the injection molding, owing to be necessary to increase the thickness of moulding product, therefore be not suitable for the moulding of thin-walled.
By the moulding product that obtain of resin combination of record in the patent documentation 2, the shock strength the when transparency and low temperature is insufficient, and has the tendency of easy albefaction when being applied in impact.
The transparency and shaping thin wall can reduce the resin combination of record sometimes in the patent documentation 3.
The object of the present invention is to provide the thin-walled injection molding polypropylene resin composite of the transparency, anti-albefaction, low temperature impact strength and shaping thin wall excellence.And, be purpose with moulding product and the container that the transparency, anti-albefaction, low temperature impact strength excellence are provided.
The technical scheme of technical solution problem
Thin-walled injection molding polypropylene resin composite of the present invention is the thin-walled injection molding polypropylene resin composite that contains propylene resin material and transparence nucleator, wherein, the limiting viscosity of xylene soluble composition in 135 ℃ naphthane is 0.9dl/g～1.3dl/g, according to JIS K 7210,230 ℃ of temperature, the melt flow rate (MFR) that records is 30g/10 minute～70g/10 minute under the condition of load 21.6N, the aforesaid propylene resinous materials be ethene unit be ethylene/propene copolymer below the 1.2 quality % or homo-polypropylene in the presence of, making ethene unit is the product that ethene/the butene-1 copolymer polymerization obtains of 74 quality %～86 quality %, when being 100 quality % with thin-walled injection molding polypropylene resin composite, the content of ethene/butene-1 copolymer is 22 quality %～32 quality %.
Thin-walled injection molding of the present invention is with in the polypropylene resin composite, and with respect to propylene resin material 100 mass parts, the content of transparence nucleator is preferably 0.01 mass parts～0.5 mass parts.
Moulding product of the present invention carry out above-mentioned thin-walled injection molding to obtain after the injection molding with polypropylene resin composite.
Container of the present invention has above-mentioned moulding product.
The invention effect
The thin-walled injection molding of the present invention polypropylene resin composite transparency, anti-albefaction, low temperature impact strength and shaping thin wall excellence.
Moulding product of the present invention and container transparent, anti-albefaction, low temperature impact strength excellence.
Embodiment
Thin-walled injection molding of the present invention contains propylene resin material and transparence nucleator with polypropylene resin composite (below be reduced to " resin combination ").
In the resin combination of the present invention, the limiting viscosity of xylene soluble composition in 135 ℃ naphthane is 0.9dl/g～1.3dl/g, more preferably 0.95dl/g～1.15dl/g.If the limiting viscosity of this resin combination surpasses above-mentioned higher limit, then has the tendency that anti-albefaction and the transparency reduce.The limiting viscosity of resin combination depends on the viscosity of propylene resin material to a great extent, and makes limiting viscosity be difficult to make less than the propylene resin material of above-mentioned lower value.
And the melt flow rate (MFR) of resin combination (MFR) is 30g/10 minute～70g/10 minute, is preferably 40g/10 minute～60g/10 minute.Herein, MFR is according to JIS K7210, the value that records under the condition of 230 ℃ of temperature, load 21.6N.If the MFR of this resin combination is less than above-mentioned lower value, then shaping thin wall reduction if surpass above-mentioned higher limit, then is difficult to make the propylene resin material, and low temperature impact strength descends.
(propylene resin material)
The propylene resin material is in polymerization reactor, in the presence of ethylene/propene copolymer or homo-polypropylene, makes ethene/butene-1 copolymer polymerization and the reaction mixed type polypropylene that obtains.Wherein, ethene/butene-1 copolymer is rubber constituent.
By in the presence of ethylene/propene copolymer or homo-polypropylene, make ethene/butene-1 copolymer polymerization, not only improved productivity but also improved dispersiveness, therefore also improved the rerum natura balance.
The aforesaid propylene resinous materials can form by multistage polymerization manufacturing.For example, in first step polymerization reactor, make homo-polypropylene or ethylene/propene copolymer polymerization, when the homo-polypropylene that obtains or ethylene/propene copolymer are supplied with second stage polymerization reactor, in the polymerization reactor of the second stage, make ethene/butene-1 copolymer polymerization, can access the propylene resin material thus.In this method, in the polymerization reactor of the second stage, homo-polypropylene or ethylene/propene copolymer are mixed with the ethene/butene-1 copolymer of generation.
Multistage polymerization is not limited in aforesaid method, can make the polymerization in a plurality of polymerization reactors of homo-polypropylene or ethylene/propene copolymer, also can make the polymerization in a plurality of polymerization reactors of ethene/butene-1 copolymer.
Can use known olefin polymerization catalysis as the catalyzer that is used for polymerization, wherein, based on can easily making the propylene resin material that presents required rerum natura, be preferably Ziegler-Natta catalyst.
In addition, during polymerization, in order to regulate molecular weight, can add hydrogen as required.
The quality molecular-weight average of propylene resin material is preferably 160,000～210,000.If the quality molecular-weight average of propylene resin material in above-mentioned scope, then could easily make the MFR of resin combination reach 30g/10 minute～70g/10 minute.
Ethene unit content in the ethylene/propene copolymer is preferably below the 1.2 quality %, more preferably 0 quality %～0.6 quality %.If the ethene unit content in the ethylene/propene copolymer surpasses above-mentioned higher limit, then reduce rigidity, the shaping thin wall of the resin combination that obtains sometimes.
Ethene unit content in ethene/butene-1 copolymer is preferably 74 quality %～86 quality %, more preferably 80 quality %～85 quality %.When if the ethene unit content in ethene/butene-1 copolymer surpasses above-mentioned higher limit, the tendency that then has the low temperature impact strength decline of the resin combination that obtains, if less than above-mentioned lower value, then exist and be difficult to make the tendency of propylene resin material, and can reduce rigidity, the transparency, the shaping thin wall of resin combination.
When resin combination was set at 100 quality %, the content of the ethene/butene-1 copolymer in the resin combination was 22 quality %～32 quality %, was preferably 25 quality %～30 quality %.If the content of ethene/butene-1 copolymer surpasses above-mentioned higher limit, then there is the tendency that is difficult to make the propylene resin material, if during less than above-mentioned lower value, the tendency that then exists the low temperature impact strength of the resin combination that obtains to descend.
(transparence nucleator)
The transparence nucleator promotes to form the polypropylene nucleus, and improves the transparency of the resin combination that obtains.Owing to contain the transparence nucleator, can easily make haze value (JIS K7105,1mm are thick) is below 30%.In the situation that does not contain the transparence nucleator, not only the transparency reduces, but also the infringement shaping thin wall.
As the concrete example of transparence nucleator, can list metal-salt, aromatic phosphoric acid ester compound, silicon-dioxide, talcum of Sorbitol Powder compound, carboxylic acid etc.From the little viewpoint of peculiar smell, be preferably the aromatic phosphoric acid ester compound.
As the Sorbitol Powder compound, for example can list: Sorbitol dibenzal, 1,3,2,4-two-(methyl benzylidene) sorbyl alcohol, 1,3,2,4-(ethyl benzylidene) sorbyl alcohol, 1,3,2,4-(methoxyl group benzylidene) sorbyl alcohol, 1,3,2,4-(oxyethyl group benzylidene) sorbyl alcohol, 1,2,3-three deoxidations-4,6-5,7-pair-o-[(4-propyl group phenyl) methylene radical] nonyl alcohol (1,2,3-trideoxy-4,6-5,7-bis-o-[(4-propylphenyl) methylene] nonitol) etc.
As the metal-salt of carboxylic acid, for example can list: hexanodioic acid sodium, Potassium Adipate, hexanodioic acid aluminium, sebacic acid sodium, sebacic acid potassium, sebacic acid aluminium, Sodium Benzoate, aluminum benzoate, two-right-p t butylbenzoic acid aluminium, two-right-p t butylbenzoic acid titanium, two-right-p t butylbenzoic acid chromium, hydroxyl-two-p t butylbenzoic acid aluminium etc.
In addition, can use the triaminobenzene derivative as the transparence nucleator.
With respect to propylene resin material 100 mass parts, the content of transparence nucleator is preferably 0.01 mass parts～0.5 mass parts, more preferably 0.1 mass parts～0.4 mass parts.But when the transparence nucleator was the triaminobenzene derivative, the content of transparence nucleator was preferably 0.01 mass parts～0.02 mass parts.If the content of transparence nucleator more than above-mentioned lower value, then can further improve the transparency of the moulding product that obtained by resin combination, if below above-mentioned higher limit, then can suppress peculiar smell.
(other polymkeric substance)
As required, can contain other polymkeric substance in the resin combination.
As other polymkeric substance, can use known thermoplastic resin or heat-curing resin.
As thermoplastic resin, for example can list the multipolymer of the alpha-olefin of ethene or alpha-olefin homo, ethene or carbon number 3～10, above-mentioned mixture, nylon, polycarbonate, polyphenylene oxide, petroleum resin etc.
As ethene or alpha-olefin homo, particularly can list the combination of high density polyethylene(HDPE), Low Density Polyethylene, polypropylene, poly-1-butylene, poly--the 1-amylene, poly--the 1-hexene, poly-(3-Methyl-1-pentene), poly-(3-methyl-1-butene), poly-(4-methyl-1-pentene), poly--the 1-hexene, poly 1-heptene, poly--the 1-octene, poly--1-decene, polystyrene and these materials.This wherein is preferably polypropylene.
(additive)
Can contain for example additives conducts such as antioxidant, hydrochloric acid absorbent, thermo-stabilizer, photostabilizer, UV light absorber, internal lubricant, exterior lubricant, static inhibitor, fire retardant, dispersion agent, copper(greening)inhibitor, neutralizing agent, plasticizer, whipping agent, kilfoam, linking agent, superoxide composition arbitrarily in the resin combination of the present invention.
(manufacture method)
Above-mentioned resin combination can be by carrying out fusion with propylene resin material and transparence nucleator, and other polymkeric substance of fusion, additive as required, utilize known mixing rolls such as single screw extrusion machine, twin screw extruder, banbury mixers, kneader, roller mill to carry out the melting mixing manufacturing afterwards and form.
(moulding product)
Above-mentioned resin combination is processed to thin molded article by injection molding.Herein, thin-walled refers to that the thickness of moulding product is below the 1.0mm.Though thin molded article is light, be difficult to moulding and cause the mechanical properties deficiency easily, but resin combination of the present invention is owing to containing the aforesaid propylene resinous materials, thereby be applicable to thin-walled injection molding, and produce enough mechanical properties.
Condition during injection molding limits especially, can select with kind and the suitable scale of the injection moulding machine of size, use according to the shape of target moulding product, and mold temperature is preferably 200 ℃～260 ℃.If mold temperature more than above-mentioned lower value, then can be guaranteed enough formabilities, if below above-mentioned higher limit, then can prevent the thermal degradation when of resin combination.
[embodiment]
In following examples and the comparative example, " % " refers to " quality % ", and " part " refers to " mass parts ".
(embodiment 1～embodiment 8, comparative example 1～comparative example 14)
Utilization has the poly-unit of common level Four polymerization reactor series connection, in preceding two-stage polymerization reactor, make homo-polypropylene or ethylene/propene copolymer polymerization, again above-mentioned substance is supplied with back two-stage polymerization reactor, in the two-stage polymerization reactor of back, made ethene/1-butylene polymkeric substance (being labeled as " C2C4 " in the table 1) or ethylene/propylene polymers (being labeled as " C2C3 " in the table 1) polymerization.At this moment, by regulating ethene feed rate, hydrogen feed rate, polymerization temperature, polymerization pressure, catalyzer addition, obtain the material of propylene resin shown in the table 1.
Fusion transparence nucleator (Millad3988 of Milliken Co.'s system) is 0.2 part in 100 parts of this propylene resin materials, utilizes forcing machine to carry out melting mixing at 230 ℃, obtains resin combination.
(comparative example 15)
With 74 parts of homo-polypropylene (PMB02A of three upright plastic cement company limited (SunAllomer Ltd.) systems), 26 parts of ethene/butene-1 copolymers and 0.2 part of fusion of transparence nucleator (Millad3988 of Milliken Co.'s system), utilize forcing machine to carry out melting mixing at 230 ℃, obtain resin combination.
(comparative example 16)
Directly use high density polyethylene(HDPE) (the corporate system J300 of Asahi Chemical Industry).
Table 1
Table 2
Table 3
Shock-resistance, shaping thin wall evaluation under the melt flow rate (MFR) of each resin combination (MFR), productivity, the transparency, anti-albefaction, bending elastic modulus, the low temperature are as follows.Evaluation result is shown in table 1～table 3.
〈MFR〉
MFR is according to JIS K7210, the value that records under the condition of 230 ℃ of temperature, load 21.6N.
＜productivity 〉
Based on following benchmark the productivity of resin combination is estimated.
◎: in polymerization reactor, can produce continuously, and production rate is fast.
Zero: in polymerization reactor, can produce continuously, and production rate is moderate.
△: though in polymerization reactor, can produce continuously, must reduce production rate.
*: in polymerization reactor, can not produce continuously.
＜transparency 〉
Under 230 ℃ of mold temperatures, with each resin combination injection molding, be made into the thick tabular test film of 1mm.Use this test film, according to JIS K7105, utilize haze measurement device (color technical institute HM-150 type processed in (strain) village) that mist degree is measured.The more little transparency of haze value is more excellent.
＜shock-resistance under the low temperature, anti-albefaction 〉
Under 230 ℃ of mold temperatures, with each resin combination injection molding, be made into the thick tabular test film of 1mm.Use this test film, under-20 ℃ of environment, by face shock strength measuring apparatus (the Hydro Shot(Ha イ De ロ シ ョ ッ ト of Shimadzu Seisakusho Ltd.'s system)) the opposite shock strength measures.
In addition, except temperature is set at 0 ℃, carry out measuring identical operations with above-mentioned shock strength, test film is applied impact, according to following benchmark anti-albefaction is estimated.
Zero: do not find albefaction.
*: find albefaction.
＜bending elastic modulus 〉
Measure according to ISO178.
＜shaping thin wall 〉
230 ℃ of mold temperatures, injection speed 200mm/ under second with each resin combination injection molding, what be made into that thickness 0.5mm and opening portion have a flange part has round-ended cylinder shape moulding product.Short penetrate (short shot) by having or not in this moulding process of visual observations, when mould takes out, have or not flexing, flange part to have or not shrink mark, and estimate according to following benchmark.
Have or not short penetrating
Zero: do not produce short penetrating.
△: also produce short penetrating sometimes, but belong to not in-problem degree in the practicality.
*: produce short penetrating.
Have or not flexing
Zero: do not produce flexing during taking-up.
△: also produce flexing during taking-up sometimes, but belong to not in-problem degree in the practicality.
*: produce flexing during taking-up.
Have or not shrink mark
Zero: flange part does not produce shrink mark.
△: flange part produces little shrink mark, but belongs to not in-problem degree in the practicality.
*: flange part produces big shrink mark.
In the resin combination transparency of embodiment 1～embodiment 8, anti-albefaction, low temperature impact strength and the shaping thin wall any is all excellent.
Being difficult to the production rubber constituent is the resin combination of the comparative example 1 of ethylene/propene copolymer.
Rubber constituent is that the ethene unit of ethylene/propene copolymer and ethylene/propene copolymer is the resin combination of 35% comparative example 2, be difficult to make the propylene resin material by polymerization, and the transparency, anti-albefaction is low.
The resin combination that rubber constituent is that the content of ethylene/propene copolymer and ethylene/propene copolymer is 18%, the ethene unit of ethylene/propene copolymer is 32% comparative example 3, transparent, anti-albefaction, low temperature impact strength are low.
The resin combination that rubber constituent is that the content of ethylene/propene copolymer and ethylene/propene copolymer is 20%, the ethene unit of ethylene/propene copolymer is 40% comparative example 4, transparent, anti-albefaction, low temperature impact strength are low.
Contain ethene unit and be the resin combination of the comparative example 5 of ethene/butene-1 copolymer of 2.2%, the low and rigidity of productivity, shaping thin wall are low.
The ethene unit of ethene/butene-1 copolymer is the resin combination of 90% comparative example 6, and low temperature impact strength is low.
The ethene unit of ethene/butene-1 copolymer is the resin combination of 70% comparative example 7, is difficult to make the propylene resin material by polymerization.
Ethene/butene-1 copolymer content is the resin combination of 20% comparative example 8, and low temperature impact strength is low.
Be difficult to make ethene/butene-1 copolymer content and be the resin combination of 35% comparative example 9.
Limiting viscosity is the resin combination of the comparative example 10 of 1.4dl/g, be difficult to make the propylene resin material by polymerization, and the transparency, anti-albefaction is low.
Limiting viscosity is the resin combination of the comparative example 11 of 0.7dl/g, is difficult to make the propylene resin material by polymerization.
MFR is the resin combination of 75g/10 minute comparative example 12, be difficult to make the propylene resin material by polymerization, and low temperature impact strength is low.
MFR is the resin combination of 20g/10 minute comparative example 13, and shaping thin wall is low.
The resin combination that does not contain the comparative example 14 of transparence nucleator, the transparency, shaping thin wall is low.
The resin combination of the comparative example 15 that polypropylene and ethene/butene-1 copolymer are mixed, the low and low temperature impact strength of productivity, shaping thin wall are low.
Use the resin combination of the comparative example 16 of high density polyethylene(HDPE), the transparency, shaping thin wall are low.
[industrial utilizability]
Thin-walled injection molding polypropylene resin composite of the present invention can be applicable to various packaging vessels such as containers for food use, cosmetics containers, the lid of bottle class etc.
Claims (4)
1. a thin-walled injection molding polypropylene resin composite is characterized in that,
Described thin-walled injection molding contains propylene resin material and transparence nucleator with polypropylene resin composite, wherein,
The limiting viscosity of xylene soluble composition in 135 ℃ naphthane is 0.9dl/g～1.3dl/g, and according to JIS K7210, the melt flow rate (MFR) that records is 30g/10 minute～70g/10 minute under the condition of 230 ℃ of temperature, load 21.6N,
Described propylene resin material be ethene unit be ethylene/propene copolymer below the 1.2 quality % or homo-polypropylene in the presence of, making ethene unit is that ethene/butene-1 copolymer polymerization of 74 quality %～86 quality % gets,
When being 100 quality % with thin-walled injection molding polypropylene resin composite, the content of ethene/butene-1 copolymer is 22 quality %～32 quality %.
2. according to the thin-walled injection molding polypropylene resin composite of claim 1, it is characterized in that,
With respect to propylene resin material 100 mass parts, the content of transparence nucleator is 0.01 mass parts～0.5 mass parts.
3. moulding product is characterized in that,
Described moulding product are that claim 1 or 2 described thin-walled injection moldings are carried out obtaining after the injection molding with polypropylene resin composite.
4. a container is characterized in that,
Described container has the described moulding product of claim 3.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010257864A JP5665497B2 (en) | 2010-11-18 | 2010-11-18 | Thin-wall injection molding polypropylene resin composition, molded product and container |
| JP2010-257864 | 2010-11-18 | ||
| PCT/JP2011/076671 WO2012067231A1 (en) | 2010-11-18 | 2011-11-18 | Polypropylene resin composition for thin wall injection molding, molded article and container |
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| Publication Number | Publication Date |
|---|---|
| CN103210038A true CN103210038A (en) | 2013-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011800551899A Pending CN103210038A (en) | 2010-11-18 | 2011-11-18 | Polypropylene resin composition for thin wall injection molding, molded article and container |
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| Country | Link |
|---|---|
| JP (1) | JP5665497B2 (en) |
| KR (1) | KR20140021517A (en) |
| CN (1) | CN103210038A (en) |
| TW (1) | TW201233721A (en) |
| WO (1) | WO2012067231A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6095947B2 (en) * | 2012-11-02 | 2017-03-15 | サンアロマー株式会社 | Polypropylene resin composition for compression molding and molded product |
| TWI477575B (en) * | 2013-01-29 | 2015-03-21 | Esd tippy tape | |
| JP2015209497A (en) * | 2014-04-25 | 2015-11-24 | サンアロマー株式会社 | Polypropylene resin composition for injection molding, and molded article |
| JP6581427B2 (en) * | 2015-08-06 | 2019-09-25 | サンアロマー株式会社 | Polypropylene resin composition and injection molded product |
| WO2023000262A1 (en) * | 2021-07-22 | 2023-01-26 | 呈和科技股份有限公司 | Polypropylene thin-wall injection molding material and thin-wall injection molded article made therefrom |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1130915A (en) * | 1994-04-11 | 1996-09-11 | 三井石油化学工业株式会社 | Process for producing propylene polymer composition, and propylene polymer composition |
| JP2004217896A (en) * | 2002-12-26 | 2004-08-05 | Sunallomer Ltd | Polypropylene-based resin composition |
| JP2005068239A (en) * | 2003-08-21 | 2005-03-17 | Sunallomer Ltd | Polypropylene resin composition |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1243188B (en) * | 1990-08-01 | 1994-05-24 | Himont Inc | POLYOLEFINIC ELASTOPLASTIC COMPOSITIONS |
| JP4058159B2 (en) * | 1998-04-21 | 2008-03-05 | 日本ポリプロ株式会社 | Propylene resin composition for injection molding |
| JP2005187713A (en) * | 2003-12-26 | 2005-07-14 | Toyota Motor Corp | Instrument panel |
-
2010
- 2010-11-18 JP JP2010257864A patent/JP5665497B2/en active Active
-
2011
- 2011-11-18 WO PCT/JP2011/076671 patent/WO2012067231A1/en active Application Filing
- 2011-11-18 KR KR1020137012280A patent/KR20140021517A/en not_active Application Discontinuation
- 2011-11-18 CN CN2011800551899A patent/CN103210038A/en active Pending
- 2011-11-18 TW TW100142284A patent/TW201233721A/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1130915A (en) * | 1994-04-11 | 1996-09-11 | 三井石油化学工业株式会社 | Process for producing propylene polymer composition, and propylene polymer composition |
| JP2004217896A (en) * | 2002-12-26 | 2004-08-05 | Sunallomer Ltd | Polypropylene-based resin composition |
| JP2005068239A (en) * | 2003-08-21 | 2005-03-17 | Sunallomer Ltd | Polypropylene resin composition |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20140021517A (en) | 2014-02-20 |
| JP2012107136A (en) | 2012-06-07 |
| WO2012067231A1 (en) | 2012-05-24 |
| JP5665497B2 (en) | 2015-02-04 |
| TW201233721A (en) | 2012-08-16 |
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