WO2012173043A1 - 金型清掃用樹脂組成物 - Google Patents
金型清掃用樹脂組成物 Download PDFInfo
- Publication number
- WO2012173043A1 WO2012173043A1 PCT/JP2012/064709 JP2012064709W WO2012173043A1 WO 2012173043 A1 WO2012173043 A1 WO 2012173043A1 JP 2012064709 W JP2012064709 W JP 2012064709W WO 2012173043 A1 WO2012173043 A1 WO 2012173043A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- resin composition
- cleaning
- ethylene
- mold
- mold cleaning
- Prior art date
Links
Classifications
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/70—Maintenance
- B29C33/72—Cleaning
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/70—Maintenance
- B29C33/72—Cleaning
- B29C33/722—Compositions for cleaning moulds
-
- 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
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
-
- 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
- C08K5/16—Nitrogen-containing compounds
- C08K5/21—Urea; Derivatives thereof, e.g. biuret
-
- 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
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
Definitions
- the present invention relates to a mold cleaning resin composition.
- a sealing molding material containing a curable resin composition typified by an epoxy resin is used and the sealing molding operation of an integrated circuit element or the like is continued for a long time, the inner surface of the molding die is caused by dirt derived from the sealing molding material.
- dirt derived from the sealing molding material There is a problem that stains. If such dirt is left as it is, dirt adheres to the surface of a sealing molded product such as an integrated circuit element. Therefore, it is necessary to remove dirt on the inner surface of the molding die in the sealing molding process. Specifically, every time hundreds of shots of sealing molding are performed, a mold cleaning resin composition is molded instead of the sealing molding material at a rate of several shots, and dirt on the inner surface of the molding mold is removed. ing.
- Such a mold cleaning resin composition has been conventionally proposed.
- an unvulcanized rubber having a blending ratio of ethylene-propylene rubber and butadiene rubber in a base resin of 90/10 to 50/50 parts by weight is unvulcanized.
- Rubber system for mold cleaning in which the elongation after vulcanization of rubber, tensile strength, rubber hardness (durometer hardness), and 90% vulcanization time at a mold temperature of 175 ° C. are defined within a specific range.
- a composition is disclosed. According to this publication, it is said that reduction of voids and chipping can be eliminated together with releasability from the mold.
- This rubber composition for mold cleaning uses, for example, monoethanolamine as a cleaning agent.
- Japanese Patent Laid-Open No. 2-20538 discloses a rubber composition for mold cleaning in which 1 to 70 parts by weight of a urea derivative is contained per 100 parts by weight of an ethylene-propylene rubber. According to this publication, it is described that a cleaning effect is obtained by adding urea derivatives such as diphenylurea and dimethylurea in order to reduce odor during the cleaning operation.
- the shape and structure of sealing molding have been diversified and refined. Therefore, the shape and structure of the molding die are required to be diversified and refined, and at the same time, the conditions in the molding operation, for example, molding conditions such as temperature, and the material of the molding die are being studied. For example, in order to improve wear resistance, a molding die having a hardness increased by using a cemented carbide is widely used.
- the molding die containing cemented carbide in the material had a problem that the molding die was altered by a small amount of cobalt contained in the cemented carbide. This is because the cobalt contained in the cemented carbide is oxidized by applying heat, the bonding strength becomes weak, and the tungsten carbide of the cemented carbide falls off. Further, in a molding die containing a cemented carbide as a material, discoloration of the molding die occurs with cobalt oxidation. When a sealing molding operation is performed with a modified molding die, an appearance defect may occur in a sealing molded product such as an integrated circuit element, and the mold shape may not be accurately transferred.
- thermosetting resin molding process in order to improve the workability of the thermosetting resin molding process, it is required to improve the cleaning performance of the mold cleaning resin composition and reduce the number of shots of the mold cleaning resin composition. . Further, not only in the molding process of the thermosetting resin composition using a molding die containing a cemented carbide, but also in the cleaning process, resistance to deterioration of the molding mold is required.
- the resin composition for mold cleaning described in the pamphlet of International Publication No. 2009/57479 still has room for improvement in cleaning performance.
- the inventor of this invention discovered that the resin composition for metal mold
- the rubber composition for mold cleaning described in JP-A-2-20538 has insufficient cleaning performance. Further, the effect of suppressing the deterioration of the molding die containing the cemented carbide in the cleaning process is insufficient.
- An object of the present invention is to provide a mold cleaning resin composition with improved cleaning performance of the inner surface of the molding die when removing dirt on the inner surface of the molding die generated in the molding step of the curable resin composition. It is to be.
- the present invention includes the following aspects.
- the ethylene-propylene rubber (A) is derived from ethylene.
- the mass ratio of the content of the structural unit to the content of the structural unit derived from propylene is in the range of 55/45 to 60/40, and the content of the ethylene-propylene rubber (A) is the content of the butadiene rubber (B).
- the mold cleaning resin composition has a mass ratio (A / B) to content of 30/70 to 70/30.
- the content of the urea derivative (D) is 0.3 to 15 parts by mass with respect to 100 parts by mass of the total content of the ethylene-propylene rubber (A) and the butadiene rubber (B).
- molding process of a curable resin composition is provided. can do.
- a numerical range indicated using “to” indicates a range including the numerical values described before and after “to” as the minimum value and the maximum value, respectively.
- the amount of each component in the composition means the total amount of the plurality of substances present in the composition unless there is a specific notice when there are a plurality of substances corresponding to each component in the composition.
- the mold cleaning resin composition of the present invention removes stains on the mold surface generated in the molding process of a curable resin composition selected from the group consisting of epoxy resins, silicone resins, phenol resins, and polyimide resins. It is used as a compression type mold cleaning resin composition to be removed.
- a curable resin composition selected from the group consisting of epoxy resins, silicone resins, phenol resins, and polyimide resins.
- the mold cleaning resin composition of the present invention includes an ethylene-propylene rubber (A), a butadiene rubber (B), an inorganic filler (C), and a urea derivative (D).
- A has a mass ratio of the content of the structural unit derived from ethylene to the content of the structural unit derived from propylene in the range of 55/45 to 60/40, and the content of the ethylene-propylene rubber (A)
- the mass ratio (A / B) to the content of the butadiene rubber (B) is in the range of 30/70 to 70/30.
- the resin composition for mold cleaning includes an ethylene-propylene rubber and a butadiene rubber having a specific configuration in a specific ratio, and further includes a urea derivative. Further, the alteration of the cemented carbide on the inner surface of the molding die is effectively suppressed, and the occurrence of poor appearance of the sealing molded product such as an integrated circuit element during sealing molding is suppressed.
- the mold cleaning resin composition contains at least one ethylene-propylene rubber (A).
- ethylene-propylene rubber means at least one of ethylene-propylene rubber and ethylene-propylene-diene rubber.
- the ethylene-propylene rubber (A) contained in the mold cleaning resin composition has a mass ratio of the content of structural units derived from ethylene to the content of structural units derived from propylene (hereinafter simply referred to as “ethylene / propylene”). The ratio is also called 55/45 (1.22) to 60/40 (1.50).
- the ethylene / propylene ratio is preferably 55/45 (1.22) to 59/41 (1.44).
- the ethylene / propylene ratio is less than 55/45, sufficient tensile strength may not be obtained after vulcanization.
- the ethylene / propylene ratio exceeds 60/40, the temperature dependency of the strength of the raw rubber becomes large and the workability may be lowered.
- the ethylene / propylene ratio in the ethylene-propylene rubber can be calculated by measuring a 1 H-NMR (proton nuclear magnetic resonance) spectrum at a resonance frequency of 1 H: 500 MHz for the resin composition for mold cleaning. .
- the 1 H-NMR spectrum is measured in the same manner, thereby making it clearer.
- the ethylene / propylene ratio can also be calculated.
- the ethylene-propylene rubber preferably further contains a structural unit derived from a diene component in addition to a structural unit derived from ethylene and a structural unit derived from propylene.
- the diene component include ethylidene norbornene (ENB), methylidene norbornene, dicyclopentadiene, vinylidene norbornene, and the like.
- the diene component preferably includes at least one selected from the group consisting of ethylidene norbornene and dicyclopentadiene, and more preferably includes ethylidene norbornene, from the viewpoint of cleaning performance.
- the content of the structural unit derived from the diene component is 6.5% by mass to 9.5% by mass in the total mass of the ethylene-propylene rubber. It is preferably 7.0% by mass to 9.0% by mass, more preferably 7.5% by mass to 8.5% by mass.
- the iodine value of the ethylene-propylene rubber is preferably 12-22, and more preferably 14-18.
- the ethylene-propylene rubber contains 6.5% by mass to 9.5% by mass of a structural unit derived from ethylidene norbornene in addition to a structural unit derived from ethylene and a structural unit derived from propylene. More preferably, the structural unit derived from ethylidene norbornene is contained in an amount of 7.0 to 9.0% by mass in the total mass.
- the Mooney viscosity ML (1 + 4) 100 ° C. of the ethylene-propylene rubber is not particularly limited. Among these, from the viewpoint of cleaning performance, it is preferably 5 to 40, more preferably 5 to 30.
- the Mooney viscosity is measured in accordance with JIS K 6300-1, “Unvulcanized rubber—Physical properties—Part 1: Determination of viscosity and scorch time using Mooney viscometer”.
- the content of the ethylene-propylene rubber is preferably 20% by mass to 80% by mass, and preferably 30% by mass to 70% by mass, based on the total mass of the mold cleaning resin composition, from the viewpoint of cleaning performance. It is more preferable.
- the mold cleaning resin composition may contain one kind of ethylene-propylene rubber or a combination of two or more kinds.
- the mold cleaning resin composition contains at least one butadiene rubber.
- the butadiene rubber is not particularly limited, and can be appropriately selected from commonly used butadiene rubbers. Among these, from the viewpoint of cleaning performance, a butadiene rubber having a high cis structure in which the content of cis 1,4 bonds is 90% by mass or more and a Mooney viscosity ML (1 + 4) of 100 ° C. is 20 to 60 is preferable. A butadiene rubber having a Mooney viscosity ML (1 + 4) of 100 ° C. of 30 to 45 is more preferable.
- the butadiene rubber may be used alone or in combination of two or more.
- the mold cleaning resin composition contains the ethylene-propylene rubber (A) and the butadiene rubber (B), when removing dirt on the inner surface of the mold, the mold cleaning resin composition The hardness can be kept appropriate, and the mold cleaning resin can be filled appropriately to the details inside the molding die. Further, since the strength of the mold cleaning resin composition can be maintained, the mold cleaning resin composition does not become brittle, and after removing the dirt, the mold cleaning resin composition is released from the molding die. Work can be done easily. Further, the resin composition for mold cleaning of the present invention contains the ethylene-propylene rubber (A) and the butadiene rubber (B), so that a urea derivative (D) such as 1,3-dimethylurea described later can be obtained.
- a urea derivative (D) such as 1,3-dimethylurea described later can be obtained.
- the mass ratio (A) / (B) of the content of the ethylene-propylene rubber (A) contained in the resin composition for mold cleaning to the content of the butadiene rubber (B) is 30/70 to 70/30. Range.
- the mass ratio (A) / (B) of the ethylene-propylene rubber (A) to the butadiene rubber (B) is less than 30/70, the mold cleaning resin composition tends to be brittle. After the removing operation, it may be difficult to release the cured mold cleaning resin composition from the molding die.
- the mass ratio (A) / (B) of the ethylene-propylene rubber (A) and the butadiene rubber (B) exceeds 70/30, the cured mold is removed during the removal of the dirt from the heated mold. Adhesion of the cleaning resin composition to the inner surface of the molding die may occur, and the cleaning time tends to increase. Further, when the mass ratio (A) / (B) is out of the above range, the ethylene-propylene rubber (A) and the butadiene rubber (B) of a urea derivative (D) such as 1,3-dimethylurea described later are used. It is difficult to control the dispersibility in the above), and there is a tendency that the effect of preventing the cleaning performance and the deterioration of the cemented carbide on the inner surface of the molding die cannot be obtained sufficiently.
- the mass ratio of the content of the ethylene-propylene rubber (A) to the content of the butadiene rubber (B) in the resin composition for mold cleaning is 1 H-NMR (proton) for the resin composition for mold cleaning.
- Nuclear magnetic resonance) spectrum can be calculated by measuring at 1 H resonance frequency: 500 MHz.
- the mold cleaning resin composition contains at least one inorganic filler (C).
- the inorganic filler is not particularly limited and can be appropriately selected from commonly used inorganic fillers.
- Specific examples of the inorganic filler include silica, alumina, calcium carbonate, aluminum hydroxide, and titanium oxide.
- the particle size range of the inorganic filler (C) is not particularly limited. Among these, from the viewpoint of cleaning performance, it is preferably 0.1 ⁇ m to 20 ⁇ m, and more preferably 5 ⁇ m to 18 ⁇ m.
- the particle size range is a volume average particle size measured with a Coulter counter (manufactured by Beckman Coulter) using an aperture diameter of 70 ⁇ m.
- the mold cleaning resin composition contains 20 to 50 parts by mass of the inorganic filler (C) with respect to a total of 100 parts by mass of the ethylene-propylene rubber (A) and the butadiene rubber (B). It is preferably 20 to 40 parts by mass, more preferably 25 to 40 parts by mass.
- the mold cleaning resin composition does not extend excessively during cleaning molding, and the mold cleaning resin composition remains on the mold inner surface during cleaning.
- molding of the resin composition for cleaning is appropriate by containing 50 mass parts or less, and the more outstanding cleaning performance is obtained.
- the mold cleaning resin composition contains at least one urea derivative.
- the urea derivative is not particularly limited as long as it is a compound having at least one ureido group.
- urea derivatives that are solid at normal temperature (25 ° C.) are preferable from the viewpoint of cleaning performance and the effect of suppressing deterioration of the molding die, and are solid at normal temperature and have at least one hydrogen atom on the nitrogen atom of the ureido group. More preferably, it is a compound.
- the urea derivatives may be used alone or in combination of two or more.
- the mold cleaning resin composition contains a urea derivative (D).
- the inventor of the present invention is that the urea derivative (D) is a cleaning component, and the urea derivative (D) acts on the dirt on the inner surface of the heated molding die, thereby contributing to the cleanability of the die surface. I believe. Furthermore, it is thought that the cleaning property of a metal mold
- the melting point of the urea derivative is preferably 70 ° C. or higher, more preferably 70 ° C. or higher and 200 ° C. or lower, and 90 ° C. or higher and 150 ° C. or lower, from the viewpoint of cleaning performance and the effect of suppressing deterioration of the molding die. More preferably it is. It is preferable that the urea derivative has a melting point of 70 ° C. or higher, that is, a solid at room temperature (25 ° C.), since dispersion of the cleaning component into the mold cleaning resin composition can be more easily controlled.
- the boiling point of the urea derivative is preferably 90 ° C. or higher, more preferably 150 ° C. or higher and 350 ° C. or lower, and more preferably 180 ° C. or higher and 300 ° C. or lower, from the viewpoint of cleaning performance and the effect of suppressing deterioration of the molding die. More preferably.
- the boiling point is 90 ° C. or more, sufficient thermal stability can be obtained, and the effect of suppressing deterioration of the molding die containing the cemented carbide can be effectively obtained.
- the urea derivative is preferably a compound having a melting point of 70 ° C. or higher and a boiling point of 90 ° C. or higher, and a melting point of 70 ° C. or higher and 200 ° C. or lower from the viewpoint of cleaning performance and the effect of suppressing deterioration of the molding die. More preferably, the boiling point is 150 ° C. or higher and 350 ° C. or lower, the melting point is 90 ° C. or higher and 150 ° C. or lower, the boiling point is 180 ° C. or higher and 300 ° C. or lower, and at least one hydrogen atom on the nitrogen atom of the ureido group It is further preferable to have
- the urea derivative is preferably a compound having an alkyl group having 1 to 15 carbon atoms on the nitrogen atom of the ureido group from the viewpoint of the cleaning performance and the effect of suppressing the deterioration of the molding die, and the urea derivative is preferably on the nitrogen atom of the ureido group.
- a compound having 1 to 3 alkyl groups having 1 to 15 carbon atoms is more preferable, and a compound having 1 or 2 alkyl groups having 1 to 3 carbon atoms on the nitrogen atom of the ureido group is more preferable.
- the alkyl group possessed by the urea derivative may be linear or branched.
- urea derivative examples include monomethyl urea (melting point 93 ° C., boiling point 240 ° C.), monoethyl urea (melting point 90 ° C., boiling point 136 ° C.), 1,1-dimethylurea (melting point 183 ° C., boiling point> 185 ° C.), Examples include 1,3-dimethylurea (melting point 102 ° C., boiling point 268 ° C.), 1,1-diethylurea (melting point 71 ° C.), 1,3-diethylurea (melting point 113 ° C., boiling point 268 ° C.), and the like. Of these, at least one urea derivative selected from the group consisting of monomethylurea and 1,3-dimethylurea is preferable from the viewpoint of cleaning performance and the effect of suppressing deterioration of the molding die.
- Monomethylurea and 1,3-dimethylurea preferably used as the urea derivative have melting points of 93 ° C. and 102 ° C., respectively, and are solid at room temperature.
- the cleaning component is a compound that is solid at room temperature because dispersion of the cleaning component into the mold cleaning resin composition can be easily controlled during the production of the mold cleaning resin composition.
- a cleaning component used in a conventional resin composition for mold cleaning such as monoethanolamine, has a melting point of 10 ° C. and is liquid at room temperature. Dispersibility in the resin composition for mold cleaning may not be sufficiently obtained with a cleaning component that is liquid at room temperature.
- the mold cleaning resin composition contains an inorganic filler (C) and a urea derivative (D) dispersed in a rubber component containing the ethylene-propylene rubber (A) and the butadiene rubber (B). It is preferable.
- the present inventor has found that when the urea derivative (D) is sufficiently dispersed in the resin composition in the production of the mold cleaning resin composition, the urea derivative against the stain on the mold surface during cleaning. It is considered that the action (D) is more effectively exhibited and the cleaning property is further improved. Further, if the dispersion into the resin composition is poor, the urea derivative (D) bleeds out after the production of the mold cleaning resin composition, which contributes to the mold surface cleaning property during the cleaning operation. It is considered that there is a case where the cleaning performance is deteriorated.
- the mold cleaning resin composition preferably has a Mooney viscosity at 100 ° C. of 60 ML (1 + 4) 100 ° C. to 90 ML (1 + 4) 100 ° C., and 60 ML (1 + 4) 100 ° C. to 80 ML (1 + 4) 100 ° C. More preferred is 62ML (1 + 4) 100 ° C. to 80ML (1 + 4) 100 ° C.
- the Mooney viscosity of the resin composition for mold cleaning is 60 ML (1 + 4) 100 ° C. or more, the moldability of the resin composition for mold cleaning tends to be further improved during the production of the resin composition for mold cleaning. .
- the Mooney viscosity is 90 ML (1 + 4) 100 ° C.
- the dispersibility of the urea derivative (D) can be controlled more appropriately.
- the present inventor has found that the Mooney viscosity of the mold cleaning resin composition increases when the mold cleaning resin composition contains the urea derivative (D). Further, when the Mooney viscosity at 100 ° C. of the mold cleaning resin composition is in the range of 60 ML (1 + 4) 100 ° C. to 90 ML (1 + 4) 100 ° C., the urea derivative (D) into the mold cleaning resin composition It is considered that the dispersion state of the above shows a state more suitable for the cleaning characteristics of the mold.
- Mooney viscosity is measured in accordance with JIS K 6300-1, “Unvulcanized rubber—physical properties—Part 1: How to determine viscosity and scorch time using Mooney viscometer”.
- the durometer hardness of the cured product after molding at 175 ° C. for 5 minutes is preferably A70 to A100, more preferably A72 to A95, and more preferably A80 to A95. Is more preferable.
- the durometer hardness of the cured product after molding at 175 ° C. for 5 minutes is A70 or more, the required molding pressure can be obtained more easily and the cleaning performance tends to be further improved.
- the durometer hardness is A100 or less, the molded product is suppressed from becoming too brittle, and the cleaning performance tends to be further improved.
- the method for measuring the durometer hardness at 175 ° C. is as follows.
- the rubber hardness test piece is produced by molding using a 37T molding machine at a mold temperature of 175 ° C., a molding pressure of 10 MPa (gauge pressure), and a molding time of 5 minutes.
- the durometer hardness of the obtained rubber hardness test piece is measured by a method according to JIS K 6253 “Method for testing hardness of vulcanized rubber and thermoplastic rubber”. Specifically, three test pieces obtained under the above-mentioned test piece preparation conditions are stacked and measured using a durometer A type.
- the present inventor further believes that the cleaning component represented by monoethanolamine contained in the conventional resin composition for mold cleaning further promotes the modification of the molding die containing cemented carbide.
- the sealing molding process for integrated circuit elements or the like is performed at a high temperature of 170 ° C. or higher, and the subsequent molding mold cleaning process is similarly performed at 170 ° C. or higher.
- the inventor of the present invention has disclosed a molding die cleaning process in which the mold cleaning resin composition containing the urea derivative (D) does not cause deterioration of the molding die containing the cemented carbide and is performed at a high temperature of 170 ° C. or higher.
- the mold cleaning resin composition containing the urea derivative (D) does not cause deterioration of the molding die containing the cemented carbide and is performed at a high temperature of 170 ° C. or higher.
- a urea derivative is generally a thermally stable substance having a relatively high melting point and boiling point compared to conventional cleaning components.
- 1,3-dimethylurea has a melting point of 102 ° C. and a boiling point of 268 ° C.
- monomethylurea is a thermally stable substance with a melting point of 93 ° C. and a boiling point of 240 ° C. Yes. Therefore, when a cleaning component having a boiling point of, for example, 180 ° C. or more is used, the cleaning property of the molding die is more effectively improved, and further, the effect of suppressing the deterioration of the molding die containing the cemented carbide is obtained more effectively. it is conceivable that.
- the mold cleaning resin composition contains ethylene-propylene rubber (A) and butadiene rubber (B)
- the dispersion state of the urea derivative (D) in the mold cleaning resin composition can be made appropriate. It is considered possible.
- a mold cleaning resin composition containing ethylene-propylene rubber (A) and urea derivative (D) and not containing butadiene rubber (B) a molding die containing cemented carbide at a high temperature of 175 ° C. or higher. It is considered that the effect of inhibiting the deterioration of the material decreases. This is considered to be because, for example, poor dispersion of the urea derivative (D) in the mold cleaning resin composition occurs, so that the effect of suppressing deterioration is reduced.
- the content of the urea derivative in the mold cleaning resin composition is not particularly limited.
- the urea derivative (D) is preferably contained in an amount of 0.1 to 20 parts by mass with respect to a total of 100 parts by mass of the ethylene-propylene rubber (A) and the butadiene rubber (B). More preferably, it is contained in an amount of ⁇ 17 parts by mass, and still more preferably in an amount of 0.3-15 parts by mass.
- the content of the urea derivative (D) is 0.1 parts by mass or more, the cleaning performance is further improved, and when removing dirt on the inner surface of the molding die generated in the molding step of the curable resin composition, Alteration of the cemented carbide on the inner surface of the molding die is more effectively suppressed.
- the content of the urea derivative (D) is 20 parts by mass or less, the moldability of the mold cleaning resin composition is further improved, and stains on the inner surface of the mold can be efficiently removed.
- the urea derivative content in the mold cleaning resin composition is 0.1 parts by mass with respect to 100 parts by mass of the ethylene-propylene rubber (A) from the viewpoint of cleaning performance and the effect of suppressing deterioration of the mold. It is preferably ⁇ 30 parts by mass, more preferably 0.2 to 25 parts by mass, and still more preferably 0.4 to 22 parts by mass. Further, the content of the urea derivative in the mold cleaning resin composition is from 0.2 parts by mass to 67 parts by mass with respect to 100 parts by mass of the butadiene rubber (B) from the viewpoint of the cleaning performance and the effect of suppressing deterioration of the mold.
- the mass is preferably 0.7 parts by mass, more preferably 0.7 parts by mass to 57 parts by mass, and still more preferably 1 part by mass to 50 parts by mass.
- the resin composition for mold cleaning has a melting point of 70 ° C. or higher, a boiling point of 90 ° C. or higher, a urea derivative having an alkyl group having 1 to 15 carbon atoms, an ethylene-propylene rubber (A) and a butadiene rubber. It is preferable to contain 0.1 to 20 parts by mass with respect to 100 parts by mass in total with (B), the melting point is 70 ° C. or higher and 200 ° C. or lower, the boiling point is 150 ° C. or higher and 350 ° C.
- the urea derivative having an alkyl group of several 1 to 15 is contained in an amount of 0.2 to 17 parts by mass with respect to 100 parts by mass in total of the ethylene-propylene rubber (A) and the butadiene rubber (B).
- the content of the urea derivative in the mold cleaning resin composition is determined by measuring a 1 H-NMR (proton nuclear magnetic resonance) spectrum at a resonance frequency of 1 H: 500 MHz for the resin composition for mold cleaning. Can be calculated.
- the urea derivatives (D) such as monomethylurea and 1,3-dimethylurea preferably used in the resin composition for mold cleaning are, for example, N-methylurea commercially available from Wako Pure Chemical Industries, Ltd., 1 , 3-dimethylurea and the like can be preferably used.
- the mold cleaning resin composition may further contain other cleaning agent other than the urea derivative in addition to the urea derivative as necessary.
- Other cleaning agents can be appropriately selected from commonly used cleaning agents. Examples of other cleaning agents include surfactants and alkali metal salts.
- the content thereof is preferably 50% by mass or less, more preferably 30% by mass or less, based on the urea derivative. More preferably, it is at most mass%.
- the mold cleaning resin composition preferably contains at least one vulcanizing agent.
- the vulcanizing agent can be appropriately selected from commonly used vulcanizing agents.
- Dialkyl peroxides such as di-t-butyl peroxide, di-t-amyl peroxide, dicumyl peroxide, and 2,5-dimethyl-2,5-di (t-butylperoxy) hexane Peroxide, 1,1-di (t-butylperoxy) -3,3,5-trimethylcyclohexane, 1,1-di (t-butylperoxy) cyclohexane, 2,2-di (t-butylperoxy) And peroxyketals organic peroxides such as oxy) octane, n-butyl-4,4-di (t-butylperoxy) valerate, 2,2-di (t-butylperoxy) butane, and the like. These may be used singly or in combination
- the content can be appropriately selected according to the type of the vulcanizing agent.
- the vulcanizing agent is preferably contained in an amount of 0.1 to 6 parts by mass with respect to a total of 100 parts by mass of the ethylene-propylene rubber (A) and the butadiene rubber (B). More preferably, it is more preferably 2 to 4 parts by mass.
- the content of the vulcanizing agent is 0.1 parts by mass or more, the cleaning performance is further improved, and when removing the dirt on the inner surface of the molding die generated in the molding step of the curable resin composition, the molding die Deterioration of the cemented carbide on the inner surface is more effectively suppressed.
- the mold cleaning resin composition preferably includes at least one mold release agent.
- the release agent include fatty acid ester release agents, synthetic waxes, and fatty acid amide release agents.
- the metal soap release agent include calcium stearate, zinc stearate, and zinc myristate.
- fatty acid ester release agents examples include Ricowax OP (Montannic acid partially saponified ester manufactured by Clariant Japan Co., Ltd.), Roxyol G-78 (polymeric composite manufactured by Cognis Japan Co., Ltd.) Ester), Recolve H-4 (modified hydrocarbon manufactured by Clariant Japan Co., Ltd.), Roxyol VPN881 (mineral oil synthetic wax manufactured by Cognis Japan Co., Ltd.), fatty acid amide S (fatty acid amide manufactured by Kao Corporation), Kao wax EB-P ( Examples include fatty acid amides manufactured by Kao Corporation, Alfro HT-50 (fatty acid amides manufactured by Nippon Oil & Fats Co., Ltd.)
- the content can be appropriately selected according to the type of the release agent.
- the release agent is preferably contained in an amount of 0.1 to 5 parts by mass, and 0.5 to 3 parts by mass with respect to 100 parts by mass in total of the ethylene-propylene rubber (A) and the butadiene rubber (B). It is more preferable to include parts by mass.
- the mold cleaning resin composition may further include other additives such as a cleaning aid, a vulcanization aid, a vulcanization accelerator, and a vulcanization acceleration aid, as necessary, as long as the effects of the present invention are not hindered. Can be included.
- a cleaning aid include various surfactants.
- the vulcanization aid include acrylic acid monomer and sulfur.
- vulcanization accelerator examples include guanidine series such as diphenylguanidine and triphenylguanidine, aldehyde-amine series such as formaldehyde-paratoluidine condensate, acetaldehyde-aniline reactant, and aldehyde-ammonia series, 2-mercaptobenzothiazole, dibenzo Examples include thiazoles such as thiazyl disulfide. Examples of the vulcanization acceleration aid include magnesia, resurge, lime and the like.
- the mold cleaning resin composition is, for example, inorganic such as a petal, bitumen, iron black, ultramarine, carbon black, lithopone, titanium yellow, cobalt blue, Hansa yellow, quinacridone red, etc.
- organic pigments may further be included.
- the method for preparing the mold cleaning resin composition is not particularly limited.
- it can be prepared by adding an inorganic filler (C) and a urea derivative (D) to a mixed dough containing ethylene-propylene rubber (A) and butadiene rubber (B) and kneading.
- an additive typified by a release agent or the like can also be added.
- the kneading means is not particularly limited, and can be appropriately selected from commonly used kneading means methods.
- examples of the kneading means include a pressure kneader, a Banbury mixer, and a roll mixer.
- the form of the mold cleaning resin composition is not particularly limited.
- a sheet shape is preferable. Since the mold cleaning resin composition is in sheet form, it can be easily cooled in a short time, and by quickly cooling the kneaded resin composition, vulcanization due to preheating during kneading can be suppressed. Stable performance can be obtained.
- the thickness and size thereof are not particularly limited and can be appropriately selected depending on the purpose. For example, the thickness can be 3 mm to 10 mm, and preferably 5 mm to 7 mm.
- the usage pattern of the mold cleaning resin composition is not particularly limited. For example, it is preferable to use it as a compression type. Thereby, after removal of dirt, the mold cleaning resin composition can be easily released from the mold.
- the cemented carbide in the mold in which the mold cleaning resin composition is used include, for example, a WC—Co alloy, a WC—TiC—Co alloy, a WC—TaC—Co alloy, and a WC—TiC—TaC— Examples thereof include a Co-based alloy, a WC-Ni-based alloy, and a WC-Ni-Cr-based alloy. Among these, at least one selected from the group consisting of WC—Ni alloys and WC—Ni—Cr alloys is preferable.
- EPT4021 ethylene-propylene rubber
- butadiene rubber manufactured by JSR Corporation, product
- 1,3-dimethylurea manufactured by Wako Pure Chemical Industries, Ltd.
- 75 g of titanium oxide (trade name: CR-80, manufactured by Ishihara Sangyo Co., Ltd.) were added and kneaded for about 3 minutes.
- 48 g of 2,5-dimethyl-2,5-di (t-butylperoxy) hexane was added and kneaded for about 1 minute.
- the temperature of the kneaded product was adjusted so as not to exceed 100 ° C.
- the obtained kneaded material was quickly passed through a pressure roll, processed into a sheet shape and cooled to 25 ° C. or lower to obtain a sheet-shaped mold cleaning resin composition having a thickness of 6 mm.
- PDIP-14L (8 pots-48 cavities) mold with a commercially available biphenyl-based epoxy resin molding material (EME-7351T manufactured by Sumitomo Bakelite Co., Ltd.) and a plunger with a tip made of cemented carbide. Then, 500 shots were molded to form a stain on the inner surface of the molding die. Using the molding die having the dirt on the inner surface of the molding die, molding was repeatedly performed on the mold cleaning resin composition obtained above, and molding required until the dirt on the inner surface of the molding die could be removed. The cleaning performance was evaluated by the number of times (number of shots). In addition, the removal state of the stain
- Example 2 In Example 1, except that the composition of the mold cleaning resin composition was changed to the formulation shown in Table 1, a mold cleaning resin composition was obtained in the same manner as in Example 1 and evaluated in the same manner.
- Example 10 In the preparation of the mold cleaning resin composition of Example 4, a mold cleaning resin composition was obtained in the same manner as in Example 4 except that monomethylurea was used instead of 1,3-dimethylurea. Evaluation was performed in the same manner.
- Example 2 In Example 1, except that the composition of the mold cleaning resin composition was changed to the formulation shown in Table 2, a mold cleaning resin composition was obtained in the same manner as in Example 1 and evaluated in the same manner. .
- the sheet-shaped mold cleaning resin composition according to the embodiment of the present invention is a stain on the inner surface of the molding die generated in the molding step of the curable resin composition. Can be removed with a small number of shots, and excellent cleaning performance was exhibited. Furthermore, the deterioration of the cemented carbide member on the inner surface of the molding die could be suppressed. On the other hand, it turns out that sufficient cleaning performance cannot be obtained with the resin composition for mold cleaning according to the comparative example.
- the mold cleaning resin composition shown in Comparative Example 1 using monoethanolamine as a cleaning agent is inferior in cleaning property to the mold cleaning resin composition according to the present invention, and is further made of cemented carbide. It was found that the material was altered. Moreover, it turned out that the cleaning property which the resin composition for mold cleaning shown in the comparative example 2 which does not contain a butadiene rubber is inferior to the resin composition for metal mold cleaning concerning this invention.
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
(1) エチレン-プロピレンゴム(A)と、ブタジエンゴム(B)と、無機充填材(C)と、尿素誘導体(D)とを含み、前記エチレン-プロピレンゴム(A)は、エチレンに由来する構成単位の含有量のプロピレンに由来する構成単位の含有量に対する質量比が55/45~60/40の範囲であり、前記エチレン-プロピレンゴム(A)の含有量の前記ブタジエンゴム(B)の含有量に対する質量比(A/B)が、30/70~70/30の範囲である金型清掃用樹脂組成物である。
本発明の金型清掃用樹脂組成物は、例えば、エポキシ樹脂、シリコーン樹脂、フェノール樹脂、及びポリイミド樹脂からなる群から選択される硬化性樹脂組成物の成形工程で発生する金型表面の汚れを取り除く、コンプレッションタイプの金型清掃用樹脂組成物として用いられる。以下、本発明の実施形態である金型清掃用樹脂組成物について詳細に説明する。
前記金型清掃用樹脂組成物は、少なくとも1種のエチレン-プロピレンゴム(A)を含む。本明細書において、エチレン-プロピレンゴムとは、エチレン-プロピレンゴム及びエチレン-プロピレン-ジエンゴムの少なくとも一方を意味する。前記金型清掃用樹脂組成物に含まれるエチレン-プロピレンゴム(A)は、エチレンに由来する構成単位の含有量のプロピレンに由来する構成単位の含有量に対する質量比(以下、単に「エチレン/プロピレン比」ともいう)が55/45(1.22)~60/40(1.50)の範囲である。前記エチレン/プロピレン比は55/45(1.22)~59/41(1.44)であることが好ましい。エチレン/プロピレン比が55/45未満では、加硫後に充分な引張強度が得られない場合がある。またエチレン/プロピレン比が60/40を超えると、原料ゴム強度の温度依存性が大きくなり加工性が低下する場合がある。
金型清掃用樹脂組成物は、ブタジエンゴムの少なくとも1種を含む。前記ブタジエンゴムは特に制限されず、通常用いられるブタジエンゴムから適宜選択することができる。中でもクリーニング性能の観点から、シス1,4結合の含有率が90質量%以上であるハイシス構造を有し、ムーニー粘度ML(1+4)100℃が20~60であるブタジエンゴムが好ましく、前記ハイシス構造を有し、ムーニー粘度ML(1+4)100℃が30~45であるブタジエンゴムがより好ましい。前記ブタジエンゴムは1種単独でも2種以上を組み合わせて用いてもよい。
前記金型清掃用樹脂組成物は、少なくとも1種の無機充填材(C)を含む。前記無機充填材は特に制限されず、通常用いられる無機充填材から適宜選択することができる。無機充填材として具体的には、シリカ、アルミナ、炭酸カルシウム、水酸化アルミニウム、酸化チタン等があげられる。中でも無機充填材(C)としてシリカ及び酸化チタンからなる群より選択される少なくとも1種を用いることが、金型への傷つけが軽微であり、金型清掃用樹脂組成物のクリーニング成形時の伸びを適度に制御できるため好ましい。
前記金型清掃用樹脂組成物は、少なくとも1種の尿素誘導体を含む。尿素誘導体としては少なくとも1つのウレイド基を有する化合物であれば特に制限はない。中でも、クリーニング性能と成形金型の変質抑制効果の観点から、常温(25℃)で固体である尿素誘導体が好ましく、常温で固体であり且つウレイド基の窒素原子上に少なくとも1つの水素原子を有する化合物であることがより好ましい。前記尿素誘導体は1種単独でも2種以上を組み合わせて用いてもよい。
前記金型清掃用樹脂組成物は、少なくとも1種の加硫剤を含むことが好ましい。加硫剤は通常用いられる加硫剤から適宜選択することができる。例えば、ジ-t-ブチルパーオキサイド、ジ-t-アミルパーオキサイド、ジクミルパーオキサイド、及び2,5-ジメチル-2,5-ジ(t-ブチルパーオキシ)ヘキサン等のジアルキルパーオキサイド類有機過酸化物、1,1-ジ(t-ブチルパーオキシ)-3,3,5-トリメチルシクロヘキサン、1,1-ジ(t-ブチルパーオキシ)シクロヘキサン、2,2-ジ(t-ブチルパーオキシ)オクタン、n-ブチル-4,4-ジ(t-ブチルパーオキシ)バレレート、2,2-ジ(t-ブチルパーオキシ)ブタン等のパーオキシケタール類有機過酸化物などが挙げられる。これらは1種単独で使用してもよいし、2種以上を併用して加硫速度を調整してもよい。
前記金型清掃用樹脂組成物は、少なくとも1種の離型剤を含むことが好ましい。離型剤として、脂肪酸エステル系離型剤、合成ワックス、及び脂肪酸アミド系離型剤等があげられる。金属石鹸系離型剤の例としては、例えばステアリン酸カルシウム、ステアリン酸亜鉛、及びミリスチン酸亜鉛等を例示できる。脂肪酸エステル系離型剤、合成ワックス、脂肪酸アミド系離型剤としては、リコワックスO P(クラリアントジャパン株式会社製 モンタン酸部分ケン化エステル)、ロキシオールG-78(コグニスジャパン株式会社製 高分子複合エステル)、リコルブH-4(クラリアントジャパン株式会社製 変性炭化水素)、ロキシオールVPN881(コグニスジャパン株式会社製 鉱油系合成ワックス)、脂肪酸アマイドS(花王株式会社製 脂肪酸アミド)、カオーワックスEB-P(花王株式会社製 脂肪酸アミド)、及びアルフローHT-50(日本油脂株式会社製 脂肪酸アミド)等を例示できる。
前記金型清掃用樹脂組成物は、本発明の効果を妨げない限り必要に応じて、洗浄助剤、加硫助剤、加硫促進剤、加硫促進助剤等のその他の添加剤を更に含むことができる。洗浄助剤としては、各種界面活性剤が挙げられる。加硫助剤として、アクリル酸モノマー、硫黄等を挙げることができる。加硫促進剤としては例えば、ジフェニルグアニジン、トリフェニルグアニジン等のグアニジン系、ホルムアルデヒド-パラトルイジン縮合物、アセトアルデヒド-アニリン反応物等のアルデヒド-アミン系及びアルデヒド-アンモニア系、2-メルカプトベンゾチアゾール、ジベンゾチアジル・ジスルフィド等のチアゾール系等が挙げられる。また加硫促進助剤としては、マグネシア、リサージ、石灰等を挙げることができる。
3000mlのジャケット付き加圧型ニーダー中に、エチレン-プロピレンゴム(三井化学株式会社製 商品名 EPT4021、エチレン/プロピレン比=55.5/44.5)の1050gと、ブタジエンゴム(JSR株式会社製、商品名:JSR BR01)の450gとを添加し、冷却しながら約3分間加圧混練した。混合生地はモチ状になり、その温度は約80℃となった。次いで1,3-ジメチル尿素(和光純薬工業株式会社製)7.5g(エチレン-プロピレンゴムとブタジエンゴムとの合計100質量部に対し0.5質量部)、ステアリン酸15g、ホワイトカーボン(東ソー・シリカ株式会社製、商品名:Nipsil LP)525g及び酸化チタン(石原産業株式会社製、商品名:CR-80)75gを加えて約3分間混練した。最後に2,5-ジメチル-2,5-ジ(t-ブチルパーオキシ)ヘキサン48gを加えて引続き約1分間混練した。この間の混練物温度が100℃を超えないように調節した。得られた混練物を速やかに加圧ロールに通し、シート状に加工すると共に25℃以下に冷却することにより、厚さ6mmのシート状の金型清掃用樹脂組成物を得た。
得られた金型清掃用樹脂組成物について、以下のようにしてクリーニング性能及び成形金型の変質抑制性(腐食性)について評価を行った。評価結果を表1及び表2に示す。いずれも金型温度を175℃とする条件でクリーニング性を評価した。なお、表1及び表2の組成における単位は、質量部であり、「-」は未配合であることを示す。
市販のビフェニル系エポキシ樹脂成形材料(住友ベークライト株式会社製 EME-7351T)を用い、先端に超硬合金製のチップが付いたプランジャーを備えたPDIP-14L(8ポット-48キャビティ)の金型で500ショットの成形を行い、成形金型内部表面の汚れを形成した。
この成形金型内部表面に汚れを有する成形金型を用いて、上記で得られた金型清掃用樹脂組成物について繰り返し成形を行い、成形金型内部表面の汚れが除去できるまでに要した成形回数(ショット数)により、クリーニング性能を評価した。なお、成形金型内部表面の汚れの除去状態は目視により判定した。また金型内部表面の汚れが除去できるまでに要した金型清掃用樹脂組成物を繰り返し成形する回数(クリーニング完了ショット数)が4回以下であるものが合格である。
成形金型の一部であるプランジャーの先端についている超硬合金製チップと、金型清掃用樹脂組成物を接触させた状態で20℃に保持した。1週間放置後、目視にて金型清掃用樹脂組成物及びこれと接していたプランジャーの先端についている超硬合金製のチップを目視で観察して変色発生の有無を確認し、以下の評価基準に従って評価した。
-評価基準-
A(優良):金型清掃用樹脂組成物及びチップに変色が発生していなかった。
B(良):金型清掃用樹脂組成物又はチップに変色がわずかに発生していたが、実用上問題のないレベルであった。
C(不可):金型清掃用樹脂組成物又はチップに変色が発生していた。
金型清掃用樹脂組成物の製造時における作業安定性について、混練時における洗浄剤の分散が容易であった場合を「良」とし、混練時における洗浄剤の分散がやや困難であった場合を「可」として評価した。
また金型清掃時における作業安定性について、金型清掃用樹脂組成物を金型温度175℃で成形圧力15MPa、成形時間300秒で成形した後、成形物を取り出す際に成形物が一体で容易に除去できたものを「良」とし、一部分離したが貼り付きなく成形物が除去できたものを「可」として評価した。
実施例1において、金型清掃用樹脂組成物の組成を表1記載の配合に代えた以外は、実施例1と同様にして金型清掃用樹脂組成物を得て、同様にして評価した。
実施例4の金型清掃用樹脂組成物の調製において、1,3-ジメチル尿素の代わりにモノメチル尿素を用いた以外は、実施例4と同様にして金型清掃用樹脂組成物を得て、同様にして評価した。
実施例4の金型清掃用樹脂組成物の調製において、エチレン-プロピレンゴムとしてEPT4021(三井化学株式会社製)の代わりにEPT4010(三井化学株式会社製、エチレン/プロピレン比=58.4/41.6)を用いた以外は、実施例4と同様にして金型清掃用樹脂組成物を得て、同様にして評価した。
実施例4の金型清掃用樹脂組成物の調製において、1,3-ジメチル尿素の代わりに2-アミノエタノールを用いた以外は、実施例4と同様にして金型清掃用樹脂組成物を得て、同様にして評価した。
実施例1において、金型清掃用樹脂組成物の組成を表2に記載の配合に代えた以外は、実施例1と同様にして金型清掃用樹脂組成物を得て、同様にして評価した。
実施例4の金型清掃用樹脂組成物の調製において、エチレン-プロピレンゴムとしてEPT4021(三井化学株式会社製)の代わりに、EPT4070(三井化学株式会社製、エチレン/プロピレン比=60.9/39.1)、EPT3090(三井化学株式会社製、エチレン/プロピレン比=50.6/49.4)及びEPT3091(三井化学株式会社製、エチレン/プロピレン比=64.5/35.5)をそれぞれ用いた以外は、実施例4と同様にして金型清掃用樹脂組成物を得て、同様にして評価した。
一方、比較例にかかる金型清掃用樹脂組成物では、充分なクリーニング性能が得られないことが判る。特に洗浄剤としてモノエタノールアミンを用いている比較例1に示した金型清掃用樹脂組成物は、本発明にかかる金型清掃用樹脂組成物と比べてクリーニング性が劣り、更に超硬合金製部材を変質させることがわかった。またブタジエンゴムを含まない比較例2に示した金型清掃用樹脂組成物は、本発明にかかる金型清掃用樹脂組成物と比べてクリーニング性が劣ることがわかった。
本明細書に記載された全ての文献、特許出願、及び技術規格は、個々の文献、特許出願、及び技術規格が参照により取り込まれることが具体的かつ個々に記された場合と同程度に、本明細書に参照により取り込まれる。
Claims (6)
- エチレン-プロピレンゴム(A)と、ブタジエンゴム(B)と、無機充填材(C)と、尿素誘導体(D)とを含み、
前記エチレン-プロピレンゴム(A)は、エチレンに由来する構成単位の含有量のプロピレンに由来する構成単位の含有量に対する質量比が55/45~60/40の範囲であり、
前記エチレン-プロピレンゴム(A)の含有量の前記ブタジエンゴム(B)の含有量に対する質量比(A/B)が、30/70~70/30の範囲である金型清掃用樹脂組成物。 - 前記尿素誘導体(D)は、1,3-ジメチル尿素及びモノメチル尿素からなる群から選択される少なくとも1種である請求項1に記載の金型清掃用樹脂組成物。
- 前記尿素誘導体(D)の含有量は、前記エチレン-プロピレンゴム(A)及びブタジエンゴム(B)の総含有量100質量部に対して、0.3質量部~15質量部である請求項1又は請求項2に記載の金型清掃用樹脂組成物。
- 100℃におけるムーニー粘度が60ML(1+4)100℃~90ML(1+4)100℃である請求項1~請求項3のいずれか1項に記載の金型清掃用樹脂組成物。
- 175℃で5分の成形後におけるデュロメータ硬度がA70~A100である請求項1~請求項4のいずれか1項に記載の金型清掃用樹脂組成物。
- 前記無機充填材(C)は、シリカを含む請求項1~請求項5のいずれか1項に記載の金型清掃用樹脂組成物。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020137032626A KR20140033101A (ko) | 2011-06-13 | 2012-06-07 | 금형 청소용 수지 조성물 |
JP2013520521A JP5975991B2 (ja) | 2011-06-13 | 2012-06-07 | 金型清掃用樹脂組成物 |
CN201280028572.XA CN103596738A (zh) | 2011-06-13 | 2012-06-07 | 模具清扫用树脂组合物 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011-131709 | 2011-06-13 | ||
JP2011131709 | 2011-06-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012173043A1 true WO2012173043A1 (ja) | 2012-12-20 |
Family
ID=47357032
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2012/064709 WO2012173043A1 (ja) | 2011-06-13 | 2012-06-07 | 金型清掃用樹脂組成物 |
Country Status (5)
Country | Link |
---|---|
JP (1) | JP5975991B2 (ja) |
KR (1) | KR20140033101A (ja) |
CN (1) | CN103596738A (ja) |
TW (1) | TW201307026A (ja) |
WO (1) | WO2012173043A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20150115739A (ko) * | 2013-01-31 | 2015-10-14 | 닛뽕 카바이도 고교 가부시키가이샤 | 금형 청소용 수지 조성물 및 금형 청소 방법 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107022424A (zh) * | 2017-03-08 | 2017-08-08 | 安徽国晶微电子有限公司 | 一种用于集成电路封装模具的清洗试剂 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01297442A (ja) * | 1988-05-26 | 1989-11-30 | Denki Kagaku Kogyo Kk | 金型クリーニング用ゴム組成物 |
JPH0220538A (ja) * | 1988-07-08 | 1990-01-24 | Denki Kagaku Kogyo Kk | 金型クリーニング用ゴム組成物 |
WO2009057479A1 (ja) * | 2007-10-29 | 2009-05-07 | Nippon Carbide Kogyo Kabushiki Kaisha | 金型清掃用ゴム系組成物 |
-
2012
- 2012-06-07 WO PCT/JP2012/064709 patent/WO2012173043A1/ja active Application Filing
- 2012-06-07 JP JP2013520521A patent/JP5975991B2/ja not_active Expired - Fee Related
- 2012-06-07 CN CN201280028572.XA patent/CN103596738A/zh active Pending
- 2012-06-07 KR KR1020137032626A patent/KR20140033101A/ko not_active Application Discontinuation
- 2012-06-12 TW TW101120985A patent/TW201307026A/zh unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01297442A (ja) * | 1988-05-26 | 1989-11-30 | Denki Kagaku Kogyo Kk | 金型クリーニング用ゴム組成物 |
JPH0220538A (ja) * | 1988-07-08 | 1990-01-24 | Denki Kagaku Kogyo Kk | 金型クリーニング用ゴム組成物 |
WO2009057479A1 (ja) * | 2007-10-29 | 2009-05-07 | Nippon Carbide Kogyo Kabushiki Kaisha | 金型清掃用ゴム系組成物 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20150115739A (ko) * | 2013-01-31 | 2015-10-14 | 닛뽕 카바이도 고교 가부시키가이샤 | 금형 청소용 수지 조성물 및 금형 청소 방법 |
JPWO2014119485A1 (ja) * | 2013-01-31 | 2017-01-26 | 日本カーバイド工業株式会社 | 金型清掃用樹脂組成物及び金型清掃方法 |
KR102161835B1 (ko) | 2013-01-31 | 2020-10-05 | 닛뽕 카바이도 고교 가부시키가이샤 | 금형 청소용 수지 조성물 및 금형 청소 방법 |
Also Published As
Publication number | Publication date |
---|---|
JP5975991B2 (ja) | 2016-08-23 |
JPWO2012173043A1 (ja) | 2015-02-23 |
CN103596738A (zh) | 2014-02-19 |
KR20140033101A (ko) | 2014-03-17 |
TW201307026A (zh) | 2013-02-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR101491757B1 (ko) | 금형 청소용 고무계 조성물 | |
JP5975991B2 (ja) | 金型清掃用樹脂組成物 | |
JP6002065B2 (ja) | 金型清掃用樹脂組成物及び金型清掃方法 | |
JP6351586B2 (ja) | ゴム組成物及びその加硫成形体 | |
TWI449615B (zh) | 模具脫模回復用橡膠系組合物 | |
KR100701917B1 (ko) | 환경친화적이며 내굴곡성이 우수한 고비중 고무 조성물 | |
JP2974267B2 (ja) | 金型清掃用ゴム系組成物 | |
TW201420303A (zh) | 模具脫模復原用樹脂組成物及模具脫模復原方法 | |
JP2844366B2 (ja) | 金型清浄化用ゴム系組成物 | |
JP6265918B2 (ja) | 金型清掃用樹脂組成物及び金型清掃方法 | |
KR20060136221A (ko) | 환경친화적이며 내굴곡성이 우수한 고비중 고무 조성물 | |
JP6289203B2 (ja) | 金型離型回復用樹脂組成物およびそれを用いた金型離型回復方法 | |
EP3896129A1 (fr) | Composition activatrice de vulcanisation | |
JP5765104B2 (ja) | 防振ゴム組成物及び防振ゴム | |
JP6333010B2 (ja) | シール材の製造方法 | |
JPH05262917A (ja) | スコーチ防止剤及び低スコーチ性ゴム組成物 | |
JP2015199204A (ja) | 金型清掃用樹脂組成物及びそれを用いる金型清掃方法 | |
JPS6114239A (ja) | 硬化ゴム配合物ならびにその製造法 | |
JP4366749B2 (ja) | ゴム用架橋剤及びそれを用いる架橋ゴムの製造方法 | |
JP2022021189A (ja) | ジアルキルペルオキシド化合物、ゴム組成物、ならびに架橋ゴムおよびその製造方法 | |
JP2013123552A (ja) | ゴルフボール用ゴム組成物及びゴルフボールの製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 12800648 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2013520521 Country of ref document: JP Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 20137032626 Country of ref document: KR Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 12800648 Country of ref document: EP Kind code of ref document: A1 |