WO2017169526A1 - 血小板保存容器用の組成物、血小板保存容器用のシート及び血小板保存容器 - Google Patents
血小板保存容器用の組成物、血小板保存容器用のシート及び血小板保存容器 Download PDFInfo
- Publication number
- WO2017169526A1 WO2017169526A1 PCT/JP2017/008668 JP2017008668W WO2017169526A1 WO 2017169526 A1 WO2017169526 A1 WO 2017169526A1 JP 2017008668 W JP2017008668 W JP 2017008668W WO 2017169526 A1 WO2017169526 A1 WO 2017169526A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- storage container
- composition
- platelet storage
- sheet
- platelet
- Prior art date
Links
Classifications
-
- 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
- C08L23/06—Polyethene
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
- A61J1/14—Details; Accessories therefor
- A61J1/1468—Containers characterised by specific material properties
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
- A61J1/05—Containers specially adapted for medical or pharmaceutical purposes for collecting, storing or administering blood, plasma or medical fluids ; Infusion or perfusion containers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
- A61J1/05—Containers specially adapted for medical or pharmaceutical purposes for collecting, storing or administering blood, plasma or medical fluids ; Infusion or perfusion containers
- A61J1/10—Bag-type containers
-
- 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
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/02—Wrappers or flexible covers
-
- 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
-
- 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
-
- 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
- C08L23/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
- C08L23/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K35/00—Medicinal preparations containing materials or reaction products thereof with undetermined constitution
- A61K35/12—Materials from mammals; Compositions comprising non-specified tissues or cells; Compositions comprising non-embryonic stem cells; Genetically modified cells
- A61K35/14—Blood; Artificial blood
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K35/00—Medicinal preparations containing materials or reaction products thereof with undetermined constitution
- A61K35/12—Materials from mammals; Compositions comprising non-specified tissues or cells; Compositions comprising non-embryonic stem cells; Genetically modified cells
- A61K35/14—Blood; Artificial blood
- A61K35/16—Blood plasma; Blood serum
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/02—Applications for biomedical use
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/04—Thermoplastic elastomer
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2314/00—Polymer mixtures characterised by way of preparation
- C08L2314/06—Metallocene or single site catalysts
Definitions
- the present invention relates to a platelet storage container composition
- a platelet storage container composition comprising a thermoplastic elastomer composition that is excellent in flexibility, transparency, heat resistance, strength, moldability, and particularly capable of forming a container having excellent gas permeability, and the composition.
- the present invention relates to a sheet formed from a product and a platelet storage container.
- the present applicants have proposed an invention comprising an elastomeric resin composition in which the platelet function due to elution of a plasticizer (such as DDP) is not hindered as in a conventional container comprising a soft vinyl chloride resin. That is, in Patent Document 1 (Japanese Patent Laid-Open No. 8-188687), gas permeability and biocompatibility comprising an elastomer composition which is excellent in flexibility, transparency, heat resistance, strength, moldability, non-toxic and odorless. An invention of a medical container excellent in platelet preservation was disclosed.
- the medical container is composed of the following four-component elastomer composition (e), (f), (g), (h).
- Block copolymer 30 to 85% by weight
- Patent Document 1 has been made by paying attention to the close relationship between the storage stability of platelets and gas permeability, and the applicants of Examples 6 and 10 have high gas permeability.
- the pH of the medical container is less decreased even when the platelet storage period is long, the platelet aggregation ability is less likely to be decreased, and the deformability of the platelet is decreased.
- % HSR low osmotic pressure shock
- platelets are stored and used as a platelet preparation.
- the expiration date of such platelet preparations is currently 3 days in Japan, but internationally, 5 to 7 days have already become mainstream.
- most platelet preparations are 10-unit preparations (platelet number 2.0 ⁇ 10 11 , capacity 200 ⁇ 40 mL), but in overseas markets, high-unit large-capacity (for example, 10 to 30 units, 250
- high-unit large-capacity for example, 10 to 30 units, 250
- platelet storage ⁇ 350 mL
- a new platelet storage container that enables longer-term storage, high-unit storage, and large-capacity storage is essential for platelet storage in the future, and there is a strong demand for medical personnel in Japan. .
- the platelet storage container made of the obtained polymer composition has a very high oxygen gas (O 2 ) permeability by adding a specific amount of the copolymer having I found it. That is, it has been found that the polymer composition can significantly improve the gas permeability of the platelet storage container as compared with the container disclosed in Patent Document 1.
- the present invention has been made based on such knowledge.
- a composition for a platelet storage container comprising an elastomer composition having a high gas permeability capable of storing platelets for a long period of time,
- An invention of a molded sheet for a platelet storage container is provided. Furthermore, in the present invention, by specifying a copolymer having specific physical properties and using it in a specific amount ratio, it is expected that the blending properties are improved, and the sheet physical properties are reduced and good heat-sealing properties are obtained.
- a composition for a platelet storage container comprising: (a) at least one polymer block A mainly composed of at least two vinyl aromatic compounds; 30 to 40% by weight of a block copolymer obtained by hydrogenating a block copolymer comprising a polymer block B mainly composed of a conjugated diene compound of (B) obtained by copolymerizing ethylene and an ⁇ -olefin having 3 to 12 carbon atoms using a metallocene catalyst, and having a density of 0.860 to 0.900 g / cm 3 and a differential scanning calorimetry (DSC ), The maximum melting peak temperature (Tp) of 90 ° C.
- compositions are provided.
- a sheet formed from the composition of (a), (b) and (c) described in [1] above has a thickness of 150 to 400 ⁇ m per unit thickness.
- the oxygen permeability is 850 ml ⁇ mm / m 2 ⁇ day ⁇ atm or more
- the carbon dioxide permeability is 4500 ml ⁇ mm / m 2 ⁇ day ⁇ atm or more
- the oxygen to carbon dioxide permeability ratio (CO 2 / O 2 ) Is 6.0 or less
- the sheet for a platelet storage container according to [2] which has a 100% modulus of 2.7 to 5 MPa and a breaking strength of 20 MPa or more.
- a platelet storage container formed in a bag shape from the sheet for platelet storage container according to [2] or [3].
- platelets formed into a bottle shape by molding the composition of (a), (b) and (c) described in [1] into a tube shape or a bottle shape.
- a storage container is provided.
- the sheet-shaped molded body is excellent in strength (physical properties), moldability, and platelet-resistant adhesion, particularly oxygen permeability.
- the balance of carbon dioxide and oxygen permeation ratio (CO 2 / O 2 ) is maintained within a preferable range regardless of the high oxygen permeability, so that the long-term storage of platelets can be further increased in high units. It can be expected that it can be maintained stably.
- composition for a platelet storage container of the present invention is: (a) a styrene-butadiene hydrogenated block copolymer, It consists of a three-component resin composition of each component of (b) ethylene copolymer and (c) methylpentene copolymer.
- the hydrogenated block copolymer of component (a) is mainly composed of a polymer block A mainly composed of at least two vinyl aromatic compounds such as styrene and at least one conjugated diene compound such as butadiene.
- a block copolymer consisting of polymer block B typically obtained by hydrogenating a styrene butadiene block copolymer.
- ABA, BABA, ABABABA, BABABA, (AB) 4 -Si, (BABB) It has a structure (repeating unit) such as 4- Si, (BAB) 4 -Sn (wherein Si is a silicon atom and Sn is a tin atom).
- the structure of a hydrogenated block copolymer that is particularly suitable for obtaining a molded article having excellent flexibility and workability and little anisotropy is a polymer block B mainly composed of a conjugated diene compound at at least one polymerization terminal.
- Si is a silicon atom
- Sn is a tin atom.
- the polymer block A mainly composed of vinyl aromatic compounds such as styrene and the polymer block B mainly composed of conjugated diene compounds such as butadiene are vinyl aromatic compounds or conjugated diene compounds in the respective polymer blocks. May be random or depadded (in which the monomer component increases or decreases along the molecular chain), a partial block, or any combination thereof, and the polymer block A and the polymer block B are respectively When there are two or more, each polymer block may have the same structure or a different structure.
- the number average molecular weight of the hydrogenated block copolymer in the present invention is in the range of 50,000 to 250,000, preferably 70,000 to 200,000. If the number average molecular weight is less than 50,000, the strength and oil resistance are not sufficient, and if it exceeds 250,000, the moldability deteriorates. Further, the molecular weight distribution of the copolymer [the ratio (Mw / Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) is 10 or less, preferably 5 or less, more preferably 2 or less. In the examples described later, those satisfying these physical properties are used.
- the ethylene copolymer used as the component (b) of the present invention is a copolymer of ethylene and ⁇ -olefin (hereinafter sometimes simply referred to as “polyethylene”), Those obtained by polymerizing ⁇ -olefin using a metallocene catalyst are used. Polyethylene produced using the catalyst has a narrow molecular weight distribution, so that the growth of crystal nuclei proceeds uniformly, and the lamellar structure of the crystal is thin and uniform, so that the gas permeability is high.
- the density of the ethylene copolymer is 0.860 to 0.900 g / cm 3 , preferably 0.870 to 0.890 g / cm 3 . If the density is less than 0.860, the strength is lowered, the surface of the molded product is sticky, and the appearance is impaired. Further, if the density exceeds 0.900 g / cm 3 , the oxygen permeability is lowered, which is not preferable.
- the maximum melting peak temperature (Tmp) by differential scanning calorimetry (DSC) of the ethylene copolymer is 90 ° C. or less.
- the maximum melting peak temperature is preferably the maximum peak temperature of the thermogram obtained when the temperature is increased at a rate of 4 ° C./min using a differential scanning calorimeter.
- the maximum melting peak temperature (Tmp) of the ethylene copolymer by differential scanning calorimetry (DSC) is 90 ° C. or less. It is because it is preferable. In the examples described later, those satisfying these physical properties are used.
- methylpentene copolymer ((C) methylpentene copolymer)
- a methylpentene homopolymer [poly (methylpentene)] or methylpentene mainly composed of methylpentene and ethylene, propylene, etc. Both of these copolymers with ⁇ -olefins.
- These homopolymers and copolymers can be used alone or as a mixture of a homopolymer and a copolymer.
- the methylpentene polymer as the component (c) is preferably one having an MFR (Melt Flow Rate) of 3 to 20 g / 10 min and a density ⁇ of 800 to 900 g / cm 3 .
- MFR Melt Flow Rate
- Tm melting point measured by DSC in the range of 180 ° C. or lower, preferably 130 ° C. or lower are preferable because of excellent gas permeability. In the examples described later, those satisfying these physical properties are used.
- (a) styrene-butadiene hydrogenated block copolymer, (b) ethylene copolymer and (c) methylpentene copolymer having the above physical properties are all readily available on the market. Can do.
- the amount of component (a) hydrogenated block copolymer is 30 to 40% by weight. If it is less than 30% by weight, the mixing property is deteriorated.
- the amount of component (b) ethylene copolymer is 35 to 65% by weight. If it is less than 35% by weight, the anti-centrifugal strength and breaking strength are lowered, and if it exceeds 65% by weight, the sheet becomes sticky.
- the amount of the component (c) methylpentene copolymer is 5 to 25% by weight, preferably 5 to 15% by weight. If it is less than 5% by weight, the gas permeability described later is lowered, and if it exceeds 25% by weight, the sheet becomes hard and difficult to seal, and the transparency is lost.
- the method for producing a resin composition having the above composition is not particularly limited, and is known in the prior art for blending resin components (polymer components). Any known method may be used. In order to obtain the most homogeneous blend, a melt kneading method using various kneaders such as a mixing roll, a kneader, a Banbury mixer and an extruder is preferable.
- these blends are preferably dry blended in advance using a mixer such as a Henschel mixer and a tumbler, and the mixture is melt-kneaded to obtain a homogeneous elastomer composition, which is preferable.
- the resin composition of the present invention may contain an appropriate amount of plasticizer, silicone oil, anti-blocking agent, ultraviolet absorber, lubricant, processing aid, etc. in addition to the essential components described above. is there.
- the elastomer composition of the present invention prepared as described above into a medical container it is first formed into a sheet by a method of inflation, T-die, calender molding, and the two sheets are stacked to form a bag shape (bag shape) ), Heat sealing (heat sealing), or directly forming into a container shape by injection molding or blow molding.
- the resin composition of the present invention was molded into a sheet, and thereby a platelet storage container formed into a bag shape and a hollow molded storage container were made of other containers of the same material or other materials. It can also be used as a multiple bag by connecting with a container and a tube.
- the thickness of the sheet formed from the composition of the present invention is preferably set in the range of 150 to 400 ⁇ m, preferably 250 to 350 ⁇ m. If the thickness L of the sheet is less than 150 ⁇ m, the physical properties of the sheet are not sufficient and partial stretching of the sheet and pinholes are caused at the time of centrifugation. If the thickness L exceeds 400 ⁇ m, it is difficult to mold, and even if molded, it becomes too thick and the flexibility is impaired, and the oxygen permeability necessary for platelet preservation is lowered, which is not preferable.
- the sheet molded from the composition of the present invention has a 100% modulus of 2.7 to 5.0 MPa, a breaking strength of 20 MPa or more, and an elongation of 550 to 750% in terms of tensile properties. Has sufficient tensile properties required.
- the oxygen permeability per unit thickness (PO 2 ) of the sheet formed from the composition of the present invention is PO 2 ⁇ 850 (ml ⁇ mm / m 2 ⁇ 24 h ⁇ atm), and the dioxide per unit thickness.
- the carbon permeability (PCO 2 ) is PCO 2 ⁇ 4500 (ml ⁇ mm / m 2 ⁇ 24 h ⁇ atm), and the permeation ratio of oxygen to carbon dioxide (CO 2 / O 2 ) is CO 2 / O 2 ⁇ 6.0.
- the oxygen transmission rate (PO 2 ) per unit thickness should be 850 (ml ⁇ mm / m 2 ⁇ 24 h ⁇ atm) or more. This is because if it is less than 850 (ml ⁇ mm / m 2 ⁇ 24 h ⁇ atm), the platelet storage stability for a long period of about 20 to 30 which is the subject of the present invention cannot be sufficiently achieved, which is not preferable. .
- the oxygen permeability (PO 2 ) (ml ⁇ mm / m 2 ⁇ 24 h ⁇ atm) of the sheet made of the composition of the present invention is actually 1000 or more, further 1100 or more. Extremely high products are obtained.
- a preferable oxygen permeability PO 2 ⁇ 850 (ml ⁇ mm / m 2 ⁇ 24 h ⁇ atm) can be realized.
- the carbon dioxide permeability (PCO 2 ) per unit thickness is 4500 (ml ⁇ mm / m 2 ⁇ 24 h ⁇ atm) or more, and the oxygen to carbon dioxide permeability ratio (CO 2 / O 2 ) is 6.0. The following is acceptable. When the permeation ratio exceeds this value, the carbon dioxide permeability is unnecessarily higher than the oxygen permeability. Since the amount of gas is small, the amount of carbon dioxide flowing out of the container becomes excessive, and the balance of the amount of carbonic acid buffering action in plasma is lost, leading to an increase in pH.
- the amount of carbon dioxide that escapes from the container and the amount of carbon dioxide produced by the metabolism of platelets are balanced.
- the permeation ratio of oxygen and carbon dioxide is 6.0 or less, preferably 5.5 or less.
- the transmission ratios (CO 2 / O 2 ) of the sheets of the present invention are all 5.5 or less.
- the sheet formed from the composition of the present invention by setting the thickness, PO 2 and PCO 2 within the above ranges, the platelet storage stability, gas permeability, and sheet processability are within these ranges. The best effect is obtained for each of the above.
- the resin components (a), (b) and (c) of the present invention can be formed not only into a sheet but also into a tube shape by, for example, an extruder. Moreover, it can use for injection molding or blow molding, and can also shape
- Platelet adhesion number evaluation test (Table 4) As representative examples, the platelet adhesion number evaluation test of Examples 1 to 5 and Comparative Example was performed.
- the platelet adhesion number test was performed by the following method. That is, 5 mm ⁇ 15 mm of the sheet molded as described above was immersed in 2 mL of a test solution adjusted to a platelet concentration of 3.0 ⁇ 0.2 ⁇ 10 5 cells / ⁇ L, and incubated at 37 ° C. for 1 h, followed by ultrapure After rinsing lightly with water, 5 mL of a 2.5% by weight aqueous solution of glutaraldehyde was added and allowed to stand for 24 hours. After natural drying, SEM observation was performed to count platelets adhering to the surface.
- Table 4 shows the results of the number of platelets adhering to both sides of the test piece sheet 5 mm ⁇ 15 mm. From the results of Table 4, the number of platelets adhering to the test piece was 0.07% or less of the number of platelets in the immersed test solution. Therefore, it was confirmed that in each of Examples 1 to 5 and Comparative Example 1 of the present invention, the platelet count was small and the platelet resistance was excellent. *
- the platelet storage container sheets (Examples 1 to 9) molded using the composition of the present invention are excellent in strength (physical properties), moldability, and platelet-resistant adhesion, particularly in oxygen permeability. Since it is remarkably excellent, it can be expected that long-term storage of high-unit platelets can be maintained continuously and stably.
- O 2 transmittance per unit thickness (PO 2 ) [(ml ⁇ mm / m 2 ⁇ 24 h ⁇ atm)] is at least 850 or more, preferably 1000 or more, more preferably It is noteworthy that 1 represents an unprecedented high value of 1100 or more.
- the CO 2 transmittance (PCO 2 ) is also extremely high, at least 4300 or more, preferably 4800 or more, more preferably 5000 or more.
- the change in pH was 10 units stored in Example 6 (pH: 7.09 ⁇ 7.24), 20 In unit storage (pH: 7.15 ⁇ 7.14) (the same document, Table 5), in 10 unit storage of Example 10 (pH: 6.97 ⁇ 7.16), in 20 unit storage (pH : 7.03 ⁇ 6.91) (the same document, Table 10).
- the present invention has a much higher oxygen transmission rate (PO 2 ) than that of the prior art of the present applicants, and also has a stable PCO 2 / PO 2 balance. Since it is maintained in the preferred range, it can be reasonably expected to be effective not only for storage of 20 units but also for storage of 30 units.
- the anaerobic glycolysis system operates and lactic acid is produced.
- the pH value decreases and the platelet function decreases.
- forming a platelet storage container with a sheet having a high O 2 permeability is extremely important in order to prevent pH reduction. Since the platelet storage container of the present invention has an unprecedented high O 2 permeability (and the CO 2 / O 2 balance is maintained within a preferable range), it can be suitably used as a platelet storage container in a high storage unit. There is expected.
- the sheet-shaped molded body is excellent in strength (physical properties), moldability, and platelet-resistant adhesion, particularly oxygen permeability.
- the balance of carbon dioxide and oxygen permeation ratio (CO 2 / O 2 ) is maintained within a preferable range regardless of the high oxygen permeability, so that the long-term storage of platelets can be further increased in high units. It can be maintained stably and its applicability in the medical industry is extremely large.
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Pharmacology & Pharmacy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Hematology (AREA)
- Mechanical Engineering (AREA)
- Engineering & Computer Science (AREA)
- Medical Preparation Storing Or Oral Administration Devices (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
(e)少なくとも2個のビニル芳香族化合物を主体とする共重合体ブロックAと、少なくとも1個の共役ジエン化合物を主体とする重合体ブロックBとからなるブロック共重合体を水素添加してなるブロック共重合体:30~85重量%、
(f)プロピレン単独共重合体またはプロピレンを主体とする共重合体:5~30重量%、
(g)エチレン共重合体:5~60重量%、
(h)ポリ(メチルペンテン)または、メチルペンテンとα-オレフィンとの共重合体3~20重量%、である。
本発明はかかる知見によりなされるに至ったもので、本発明にしたがえば、血小板の長期保存可能な高いガス透過性を有するエラストマー組成物からなる血小板保存容器用の組成物、当該組成物により成形した血小板保存容器用のシートの発明が提供される。さらに本発明においては、特異な物性を有する共重合体を規定し、特定量比で用いることで、ブレンド性が上がり、シート物性のバラつき低減や良好なヒートシール性へもつながる効果が期待できる。
[1]本発明にしたがえば、血小板保存容器用の組成物であって、当該組成物は、(a)少なくとも2個のビニル芳香族化合物を主体とする重合体ブロックAと、少なくとも1個の共役ジエン化合物を主体とする重合体ブロックBとからなるブロック共重合体を水素添加してなるブロック共重合体30~40重量%と、
(b)エチレンと炭素数3~12のα‐オレフィンとをメタロセン触媒を用いて共重合させて得られ、かつ密度が、0.860~0.900g/cm3、示差走査熱量測定法(DSC)による最大融解ピーク温度(Tp)が90℃以下のポリエチレンが35~65重量%と、
(c)ポリ(メチルペンテン)または、メチルペンテンを主体とするエチレンもしくはα‐オレフィンとの共重合体5~25重量%の組成物からなり、
前記(c)成分は、MFR が3~20g/10分、密度が800~900g /cm3、示差走査熱量測定法(DSC)により測定した融点(Tm)が、180℃以下である血小板保存容器用の組成物が提供される。
成分(a)の水添ブロック共重合体は、スチレンのような少なくとも2個のビニル芳香族化合物を主体とする重合体ブロックAと、ブタジエンのような少なくとも1個の共役ジエン化合物を主体とする重合体ブロックBとから成る、代表的にはスチレンブダジエンブロック共重合体を水素添加して得られるブロック共重合体である。例えば、
A-B-A、B-A-B-A、A-B-A-B-A、B-A-B-A-B、(A-B)4‐Si、(B-A-B)4-Si、(B-A-B)4‐Sn等の構造(繰り返し単位)を有するものである(但し、式中Siはケイ素原子、Snはスズ原子である。)。
B-A-B-A、
B-A-B-A-B、
(B-A-B)4-Si、
(B-A-B)3-Si-R、
(B-A-B)4-Sn、
(B-A-B)3-Sn-R、
(B-A-B)2-Si-R,R´
(A-B),(B-A-B)‐Si‐R,R´
(A-B),(B-A-B)2-Si-R
等の構造(繰り返し単位)を有する水添ブロック共重合体である(但し、式中R,R´はC1~C8のアルキル基であり、R,R´は同一でも異なっても良い。Siはケイ素原子、Snはスズ原子である。)。
本発明の説明で使用される「主体とする」という表現は、該当モノマー単位が重合体ブロックの少なくとも50質量%以上、好ましくは70質量%以上を占めることを意味する。
また当該共重合体の分子量分布[重量平均分子量(Mw)と数平均分子量(Mn)との比(Mw/Mn)は、10以下、好ましくは5以下、さらに好ましくは2以下である。なお後記実施例においてはこれらの物性を充足するものを使用している。
次に本発明の(b)成分として用いられているエチレン共重合体は、エチレンとα‐オレフィンの共重合体(以下、単に「ポリエチレン」と略記することがある。)であって、エチレンとα‐オレフィンをメタロセン触媒を用いて重合して得られるものが使用される。前記触媒を用いて製造されるポリエチレンは、分子量分布が狭いため均一に結晶核の成長が進み、結晶のラメラ構造が薄く均一であるためガス透過性が高くなる。
前記エチレン共重合体の示差走査熱量測定法(DSC)による最大融解ピーク温度(Tmp)は、90℃以下である。ここで最大融解ピーク温度とは、示差走査熱量計を用いて、4℃/minの速度で昇温した時に得られるサーモグラムの最高ピーク温度であることが好ましい。これは本発明の血小板保存用容器の高い酸素透過度を得るためには、当該エチレン共重合体の示差走査熱量測定法(DSC)による最大融解ピーク温度(Tmp)は90℃以下であることが好ましいからである。なお後記実施例においてはこれらの物性を充足するものを使用している。
次に本発明における(c)成分として用いられているメチルペンテン共重合体としては、メチルペンテンの単独重合体[ポリ(メチルペンテン)]または、メチルペンテンを主体とするメチルペンテンとエチレン、プロピレン等のα-オレフィンとの共重合体の両者を意味するものとする。これら単独重合体及び共重合体は、単独で用いるかあるいは単独重合体と共重合体の混合物として使用することができる。
当該(c)成分のメチルペンテン重合体は、MFR(Melt Flow Rate) が 3~20g/10分、密度ρが800~900g/cm3であるものが好ましい。
特にDSCで測定した融点(Tm)が、180℃以下の範囲、好ましくは130℃以下にあるものがガス透過性に優れるので望ましい。後記実施例においてはこれらの物性を充足するものを使用している。
なお、上記物性を有する(a)スチレン‐ブタジエン水添ブロック共重合体、(b)エチレン共重合体及び(c)メチルペンテン共重合体は、全て市販のものを容易に入手して使用することができる。
本発明の樹脂組成物において成分(a)水添ブロック共重合体の配合量は、30~40重量%である。30重量%未満では混合性が悪くなり、40重量%を超えると耐遠心強度、破断強度が低下するので好ましくない。
成分(b)エチレン共重合体の配合量は、35~65重量%である。35重量%未満では耐遠心強度、破断強度が低下し、65重量%を超えるとシートのベタツキが発生するので好ましくない。
成分(c)メチルペンテン共重合体の配合量は、5~25重量%、好ましくは5~15重量%である。
5重量%未満では後述するガス透過性が低下し、25重量%を越えるとシートが硬くなってシールしにくいことや透明度が失われることなど血小板保存容器として成形加工しにくくなるので好ましくない。
上記の組成からなる樹脂組成物(以下エラストマー組成物と称することがある。)を製造する方法としては、特に限定するものではなく、樹脂成分(重合体成分)をブレンドするために従来技術で知られているいかなる方法を使用しても良い。最も均質なブレンド物を得るためには、例えばミキシングロール、ニーダー、バンバリーミキサー及び押出機のような各種の混練機を使用して溶融混練する方法が好ましい。さらに、溶融混練する前に、これらの配合物をヘンシェルミキサー、タンブラーのような混合機を用いてあらかじめドライブレンドし当該混合物を溶融混練することにより均質なエラストマー組成物が得られるので好ましい。
なお本発明の樹脂組成物には、上記必須主要成分のほかに用途に応じて適量の可塑剤、シリコンオイル、ブロッキング防止剤、紫外線吸収剤、滑剤、加工助剤等を含有することも可能である。
上記のようにして調整した本発明のエラストマー組成物を医療用容器に形成するには、インフレーション、Tダイ、カレンダー成形の方法でまずシート化し、当該2枚のシートを重ねて袋形状(バッグ状)にして熱溶着(ヒートシール)したり、或いは射出成形やブロー成形法により直接容器形状に中空成形したりする方法などが採用できる。
以上のようにして、本発明の樹脂組成物をシートに成形し、これにより袋状に形成した血小板保存容器や中空成形した保存容器は、同材質の他の容器や、他の材質で出来た容器とチューブで接続して多連バッグとして使用することもできる。
本発明の組成物より成形したシートの厚さは、150~400μm、好ましくは250~350μmの範囲に設定されることが好ましい。
シートの厚みLが150μm未満ではシートの物性が充分でなく遠心時にシートの部分的延伸、ピンホールを引き起こして好ましくない。
厚みLが400μmを越えると成形困難であり、成形しても厚くなりすぎて柔軟性が損なわれ、血小板保存性の上で必要な酸素透過性が低くなってしまい好ましくない。
また本発明の組成物より成形したシートは、引張物性に関しては、100%モジュラスが2.7~5.0MPa、破断強度が20MPa以上、伸びが550~750%であり、血小板保存容器用シートに要求される充分な引張物性を有する。
本発明の組成物により成形したシートについての、単位厚さ当たりの酸素透過率(PO2 )はPO2 ≧850(ml・mm/m2 ・24h・atm)で、かつ単位厚さ当たりの二酸化炭素透過率(PCO2 )は、PCO2 ≧4500(ml・mm/m2 ・24h・atm)であり、酸素と二酸化炭素の透過比(CO2/O2)は、CO2/O2≦6.0である。
このように本発明においては、好ましい酸素透過率PO2≧850(ml・mm/m2 ・24h・atm)のものが実現できる。
(a)スチレン-ブタジエンブロック共重合体、(b)エチレン共重合体、(c)メチルペンテン共重合体の各成分を表1に示すように各種組成(実施例1から9)にブレンドした樹脂組成物を準備し、これを250-350μmの範囲の種々の厚さのシートに成形し、このシートを用いて次の各種試験((1)ガス透過試験、(2)物性試験、(3)シール強度試験、(4)血小板付着数評価試験)を行い、結果を表1から表4に示した。なお、(c)メチルペンテン共重合体としてMFR:15g /10分、ρ:850g /cm3のものを使用した。
また比較例1として、表1に示すように、(c)メチルペンテン共重合体を含まない原料であってその代わりにポリプロピレンを配合した樹脂組成物を、実施例1から9と同様に成形し、各種試験を行った結果を、合わせて表1から表4に示した。
上記方法で作製したシートをJIS K7126-1に準拠して測定装置GTR-31A(GTRテック社製)を用いて、P:単位厚さ当たりのガス透過率(ml・mm/m2 ・24h・atm)を温度23℃で測定し、結果を表2に示した。表2の結果より、本発明の実施例1から9は比較例1と比較して酸素と炭酸ガス透過率がずっと良好であることが確認できた。また、酸素と二酸化炭素の透過比(CO2/O2)が安定期に6.0以下、さらには5.5以下であることが確認された。なお、この酸素透過率(及び炭酸ガス透過率)は、本出願人が先に開示した特許文献1のものより遙かに高い値を示すものであることについては、後述する考察において詳細に検討を行った。
JIS K6301及び JIS K7127に準拠して100%モジュラス、引張破断強度及び伸びを測定した。結果を表1に示した。表1の結果より、本発明の実施例1から9と比較例は、同程度の値を示し、ともに引張応力が大きく引張強度が優れていることが確認できた。すなわち、すべての実施例のシートにおいて、これらは本発明で好ましい100%モジュラスが2.7~5MPa、伸びが550~750%、破断強度が20MPa以上という好ましい範囲のものであることが確認された。
代表例として実施例1~5と比較例の2枚のシートを熱溶着し、引張試験を行うことによりシール強度を調べた。結果を表3に示した。表3の結果より、本発明の実施例1~5と比較例はともにシール強度が大きく引張強度が優れていることが確認できた。特に約220℃付近でシール強度は最大となる。ただし、実施例4と5はこのシール強度の値を示すのにシール温度を高温にする必要があることに留意した。
代表例として実施例1~5と比較例の血小板付着数評価試験を実施した。
血小板付着数試験は以下の方法により行った。すなわち、血小板濃度を3.0±0.2×105個/μLに調整した試験液2mL中に、上記のようにして成形したシート5mm×15mmを浸し、37℃-1hインキュベートしたのち超純水で軽くすすいだ後2.5重量%のグルタルアルデヒド水溶液5mLを加えて24時間静置した。自然乾燥後、SEM観察を行って表面に付着した血小板をカウントした。
以上の実施例の結果から、特に本発明のO2透過率(及びCO2透過率)について検討する。
表2より、実施例1-9において、単位厚みあたりのO2透過率(PO2)[(ml・mm/m2 ・24h・atm)]は、少なくとも850以上、好ましくは1000以上、更に好ましくは1100以上という従来にない高い数値を示すことが特筆される。又CO2の透過率(PCO2)も、少なくとも4300以上、好ましくは4800以上、さらに好ましくは5000以上と極めて高い。
本出願人らが先に開示した引用文献1においては、その代表的な実施例6においてO2透過率(PO2)とCO2透過率(PCO2)は、PO2=703、PCO2=3194であり(引用文献1、表1)、同様に実施例10においては、PO2=545、PCO2=2454(同文献、表7)と、本実施例の最大透過率PO2=1100、PCO2=5000と比較するとはるかに低い。
この結果を踏まえると、本発明は、本出願人らの先行技術である特許文献1のものよりはるかに高い酸素透過率(PO2)を有し、しかもPCO2/PO2バランスも安定的に好ましい範囲に維持されているのであるから、20単位の保存はもちろん30単位の保存にも効果的であることが合理的に期待できる。
Claims (5)
- 血小板保存容器用の組成物であって、当該組成物は、(a)少なくとも2個のビニル芳香族化合物を主体とする重合体ブロックAと、少なくとも1個の共役ジエン化合物を主体とする重合体ブロックBとからなるブロック共重合体を水素添加してなるブロック共重合体30~40重量%と、
(b)エチレンと炭素数3~12のα‐オレフィンとをメタロセン触媒を用いて共重合させて得られ、かつ密度が、0.860~0.900g/cm3、示差走査熱量測定法(DSC)による最大融解ピーク温度(Tp)が90℃以下のポリエチレンが35~65重量%と、
(c)ポリ(メチルペンテン)または、メチルペンテンを主体とするエチレンもしくはα‐オレフィンとの共重合体5~25重量%の組成物からなり、
前記(c)成分は、MFR が3~20g/10分、密度が800~900g /cm3、示差走査熱量測定法(DSC)により測定した融点(Tm)が、180℃以下である、ことを特徴とする血小板保存容器用の組成物。 - 請求項1に記載の(a)、(b)及び(c)の組成物より成形したシートの厚さが150~400μmで、単位厚さ当たりの酸素透過率が850ml・mm/m2・day・atm以上でかつ二酸化炭素透過率が4500ml・mm/m2・day・atm以上であり、かつ酸素と二酸化炭素の透過比(CO2/O2)が6.0以下である、ことを特徴とする血小板保存容器用のシート。
- 100%モジュラスが2.7~5MPa、破断強度が20MPa以上、伸びが550~750%である、ことを特徴とする請求項2に記載の血小板保存容器用のシート。
- 請求項2または3に記載の血小板保存容器用のシートより袋状に形成した、ことを特徴とする血小板保存容器。
- 請求項1に記載の(a)、(b)及び(c)の組成物をチューブ状またはボトル状に成形し、これによりボトル形状に形成した、ことを特徴とする血小板保存容器。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018508861A JPWO2017169526A1 (ja) | 2016-03-28 | 2017-03-06 | 血小板保存容器用の組成物、血小板保存容器用のシート及び血小板保存容器 |
US16/089,398 US20190105228A1 (en) | 2016-03-28 | 2017-03-06 | Composition for platelet storage container, sheet for platelet storage container, and platelet storage container |
EP17774071.9A EP3437620A4 (en) | 2016-03-28 | 2017-03-06 | COMPOSITION FOR BLOOD STORAGE RESERVOIR, FOIL FOR STORAGE STORAGE TANK AND BLOOD STORAGE TANK |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016-064017 | 2016-03-28 | ||
JP2016064017 | 2016-03-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2017169526A1 true WO2017169526A1 (ja) | 2017-10-05 |
Family
ID=59963012
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2017/008668 WO2017169526A1 (ja) | 2016-03-28 | 2017-03-06 | 血小板保存容器用の組成物、血小板保存容器用のシート及び血小板保存容器 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20190105228A1 (ja) |
EP (1) | EP3437620A4 (ja) |
JP (1) | JPWO2017169526A1 (ja) |
WO (1) | WO2017169526A1 (ja) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62246950A (ja) * | 1986-04-21 | 1987-10-28 | Mitsui Petrochem Ind Ltd | 医療器具用樹脂組成物 |
JPH11189689A (ja) * | 1997-12-26 | 1999-07-13 | Jsr Corp | 熱可塑性エラストマー組成物 |
JP2002017817A (ja) * | 2000-07-04 | 2002-01-22 | Kawasumi Lab Inc | 医療用具 |
WO2010023906A1 (ja) * | 2008-09-01 | 2010-03-04 | 三井化学株式会社 | シンジオタクティック構造を有する4-メチルペンテン-1系重合体 |
JP2015189872A (ja) * | 2014-03-28 | 2015-11-02 | 三井化学株式会社 | 樹脂組成物、成形体、パイプおよびコイル巻きパイプ |
JP2016121322A (ja) * | 2014-09-12 | 2016-07-07 | 三井化学株式会社 | フィルム及び積層フィルム |
JP2016150953A (ja) * | 2015-02-16 | 2016-08-22 | 三井化学株式会社 | 成形体、食品容器本体及び食品容器用蓋 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4496361A (en) * | 1981-08-05 | 1985-01-29 | E. I. Du Pont De Nemours And Company | Platelet storage container |
JPH08188687A (ja) * | 1994-09-20 | 1996-07-23 | Kawasumi Lab Inc | エラストマー組成物及び医療用容器 |
-
2017
- 2017-03-06 WO PCT/JP2017/008668 patent/WO2017169526A1/ja active Application Filing
- 2017-03-06 US US16/089,398 patent/US20190105228A1/en not_active Abandoned
- 2017-03-06 JP JP2018508861A patent/JPWO2017169526A1/ja active Pending
- 2017-03-06 EP EP17774071.9A patent/EP3437620A4/en not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62246950A (ja) * | 1986-04-21 | 1987-10-28 | Mitsui Petrochem Ind Ltd | 医療器具用樹脂組成物 |
JPH11189689A (ja) * | 1997-12-26 | 1999-07-13 | Jsr Corp | 熱可塑性エラストマー組成物 |
JP2002017817A (ja) * | 2000-07-04 | 2002-01-22 | Kawasumi Lab Inc | 医療用具 |
WO2010023906A1 (ja) * | 2008-09-01 | 2010-03-04 | 三井化学株式会社 | シンジオタクティック構造を有する4-メチルペンテン-1系重合体 |
JP2015189872A (ja) * | 2014-03-28 | 2015-11-02 | 三井化学株式会社 | 樹脂組成物、成形体、パイプおよびコイル巻きパイプ |
JP2016121322A (ja) * | 2014-09-12 | 2016-07-07 | 三井化学株式会社 | フィルム及び積層フィルム |
JP2016150953A (ja) * | 2015-02-16 | 2016-08-22 | 三井化学株式会社 | 成形体、食品容器本体及び食品容器用蓋 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3437620A4 * |
Also Published As
Publication number | Publication date |
---|---|
JPWO2017169526A1 (ja) | 2019-02-07 |
EP3437620A4 (en) | 2019-11-27 |
US20190105228A1 (en) | 2019-04-11 |
EP3437620A1 (en) | 2019-02-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Grein et al. | Mechanical and optical effects of elastomer interaction in polypropylene modification: Ethylene-propylene rubber, poly-(ethylene-co-octene) and styrene-butadiene elastomers. | |
US20040220323A1 (en) | Injection-moldable transparent thermoplastic elastomer | |
JPS5974153A (ja) | 樹脂組成物 | |
NO782549L (no) | Plastmateriale. | |
BR112013005340B1 (pt) | Folha de múltiplas camadas de resina de propileno, e, bolsa de acondicionamento termotratável | |
EP2407140B1 (en) | Elastomer composition for medical container stopper | |
JP5346642B2 (ja) | 医療容器栓体用複合エラストマー組成物 | |
JP2016089047A (ja) | 熱可塑性エラストマー組成物 | |
WO2017169526A1 (ja) | 血小板保存容器用の組成物、血小板保存容器用のシート及び血小板保存容器 | |
JP7281404B2 (ja) | 医療用保存容器を製造するための樹脂組成物、シートおよび医療用保存容器 | |
JP2019509384A5 (ja) | ||
WO2022153783A1 (ja) | ポリオレフィン系樹脂フィルム及び積層体 | |
JPH08188687A (ja) | エラストマー組成物及び医療用容器 | |
EP1592382A1 (en) | Medical container | |
JP3989670B2 (ja) | 血小板保存用容器 | |
JP2021075690A (ja) | 熱可塑性樹脂組成物、成形体及び積層体 | |
JPH04159344A (ja) | 軟質重合体組成物 | |
Schardl et al. | Potential film applications for syndiotactic polypropylene | |
JPH05163394A (ja) | 透明性と柔軟性に優れたポリプロピレン樹脂組成物 | |
JP7217652B2 (ja) | 樹脂配管 | |
JP2003047642A (ja) | 医療用具 | |
JPS6099154A (ja) | 成形用樹脂組成物 | |
JP3368625B2 (ja) | ポリオレフィン系樹脂製包装材 | |
JP3653674B2 (ja) | 血小板保存バック | |
JPH04221572A (ja) | 医療用具 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 2018508861 Country of ref document: JP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2017774071 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2017774071 Country of ref document: EP Effective date: 20181029 |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 17774071 Country of ref document: EP Kind code of ref document: A1 |