WO2000039219A1 - Polyarylene sulfide resin composition for electronic part encapsulation - Google Patents
Polyarylene sulfide resin composition for electronic part encapsulation Download PDFInfo
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- WO2000039219A1 WO2000039219A1 PCT/JP1999/007200 JP9907200W WO0039219A1 WO 2000039219 A1 WO2000039219 A1 WO 2000039219A1 JP 9907200 W JP9907200 W JP 9907200W WO 0039219 A1 WO0039219 A1 WO 0039219A1
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- WIPO (PCT)
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- weight
- parts
- polyarylene sulfide
- resin composition
- sulfide resin
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
- H01L23/29—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the material, e.g. carbon
- H01L23/293—Organic, e.g. plastic
- H01L23/296—Organo-silicon compounds
-
- 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
- C08K5/54—Silicon-containing compounds
- C08K5/541—Silicon-containing compounds containing oxygen
- C08K5/5435—Silicon-containing compounds containing oxygen containing oxygen in a ring
-
- 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
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0869—Acids or derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L81/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur with or without nitrogen, oxygen or carbon only; Compositions of polysulfones; Compositions of derivatives of such polymers
- C08L81/02—Polythioethers; Polythioether-ethers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
Definitions
- the present invention relates to a polyarylene sulfide resin composition for sealing electronic components.
- semiconductors such as diodes, transistors, LSIs, CCD elements, ICs, and the like, and polymer sulfides suitable for sealing capacitors, resistors, coils, microswitches, dipswitches, etc.
- PAS PAS
- Polyarylene sulfide resin is an engineering plastic with excellent heat resistance, flame retardancy, electrical properties, and various mechanical properties, and is therefore used for electronic components, electrical components, etc. It is known that it is widely used as a stopping material (for example, Japanese Patent Application Laid-Open Nos. 61-26664, 61-29662, and Japanese Patent Application Laid-Open Nos. Sho 62-1500752, JP-A-Heisei 02-45560, JP-A-Heisei 05-22545, etc.). However, in these, there were problems such as insufficient reliability of the operation after the heat cycle.
- electronic components to be generally sealed are made up of a silicon chip, a lead frame and the like, and the lead wire is connected to an aluminum circuit by a bonding wire and has a structure capable of conducting electricity.
- the silicon chip is usually inserted in a mold in advance, and then the resin beret is, for example, screw in-line. A method of supplying the mixture to a mold injection molding machine and performing sealing molding has been adopted.
- PCT Pressure Cooker Test
- TCT Thermal Cycle Test
- the present invention has been made in view of the above-described problems, and has excellent moisture-heat resistance, thermal shock resistance, and fluidity while maintaining good properties of the PAS resin itself, and has no deformation of a bonding wire or the like. It is an object of the present invention to provide a PAS resin composition which is not particularly damaged as a package due to a decrease in strength and is particularly suitable as an electronic component sealing material.
- the present invention provides the following inventions.
- a polyarylene sulfide resin composition for electronic component encapsulation comprising (D) 0.05 to 1.2 parts by weight of epoxysilane and (E) 0.1 to 3 parts by weight of epoxy resin with respect to parts by weight.
- the (C) elastomer is a copolymer of ethylene, an ⁇ , -unsaturated alkyl carbonate and maleic anhydride, each having a repeating unit content of 50 to 90%.
- Lens sulfide resin composition is an ethylene copolymer in an amount of 5% by weight, 5 to 49% by weight, or 0.5 to 10% by weight.
- the polyarylene sulfide (PAS) (A) used in the present invention contains at least 70 mol% of a repeating unit represented by the structural formula: Ar—S— (where Ar is an arylene group).
- the typical substance is a polymer, having the following structural formula (I)
- R 1 is a substituent selected from a halogen atom such as an alkyl group having 6 or less carbon atoms, an alkoxy group, a phenyl group, a carboxylate Z metal salt, an amino group, a nitro group, fluorine, chlorine, and bromine.
- m is an integer of 0-4.
- n represents an average 1 shows the degree of polymerization. 3-3 0 repeating units 7 represented by 0 in the range of) mole 0 /. This is the polysulfide sulfide (hereinafter sometimes referred to as PPS) possessed above.
- PPS polysulfide sulfide
- PAS is generally known to have a molecular structure that is substantially linear and does not have a branched or crosslinked structure, and a PAS having a branched or crosslinked structure. It can be used without.
- a preferred PAS for use in the present invention is a paras as a repeating unit.
- Homopolymers or copolymers containing the above may be mentioned.
- the content of the repeating unit is less than 70 mol%, the intrinsic crystallinity, which is a characteristic of the crystalline polymer, tends to be low, and sufficient mechanical properties tend to be not obtained.
- Examples of the copolymerizable structural unit include a metaphenylene sulfide unit, an orthophenylene sulfide unit, p, p, a diphenylene ketone / ref unit, p, p′— Diphenylene sulfones / ref units, p, p '— biphenylene sulfide units, p, p' diphenylene ether sulfide units, p, p '— diphenylene methyl sulfide units, p, p p '— diphenyl lenmemenolenolesulfide unit, naphthyl sulfide unit, etc.
- the PAS resin can be obtained, for example, by subjecting a dihalo aromatic compound and a sulfur source to a polycondensation reaction in an organic polar solvent by a method known per se.
- the melt viscosity of the PAS resin used in the present invention is not particularly limited, it may be in the range of 5 to 100 Pa ⁇ s at 300 ° C. and 200 seconds- 1. I like it.
- Silica has a small coefficient of linear expansion, and is used for the purpose of improving the adhesion to chips, lead frames and bonding wires in electronic components.
- silica used is not particularly limited.
- amorphous silica such as crushed silica and spherical silica such as fused silica or synthetic silica can be used.
- a mixture of a plurality of these types can be used.
- the particle size / particle size distribution but preferably, the average particle size is 50 ⁇ m or less.
- the surface may be previously treated with a silane coupling agent or the like.
- a silane coupling agent or the like.
- an arbitrary one can be selected from conventionally known ones.
- Amino silane such as ethizole trimethoxy silane, epoxy silane, butyl silane, mercapto silane and the like can be mentioned.
- the elastomer used in the present invention is not particularly limited, and examples thereof include an olefin elastomer, a polyamide elastomer, a polyester ester elastomer, a vinyl copolymer elastomer, and a gen elastomer. Elastomers and silicon-based elastomers can be mentioned.
- olefin-based elastomer examples include those obtained by copolymerizing an unsaturated carboxylic acid or an anhydride thereof with an ⁇ -olefin-based backbone polymer in the form of a graph.
- ⁇ -olefins include polymers such as ethylene, propylene, butene-1, isobutene, pentene-11, 4-methylpentene-11, and copolymers thereof, and unsaturated carboxylic acids or anhydrides thereof.
- the substances include maleic acid, fumaric acid, itaconic acid, methylmaleic acid, acrylic acid, methacrylic acid, crotonic acid, citraconic acid and maleic anhydride.
- the monomer component is a copolymer of ethylene, an ⁇ ,] 3-unsaturated carboxylic acid alkyl ester, and maleic anhydride, each having a repeating unit content of 50%. ⁇ 90% by weight, 5-49% by weight, 0.5 ⁇ : [0 weight 0 /. , Preferably 60-85 weight. /. , 7 ⁇ 45% by weight, 1 ⁇ 8% by weight. /. Ethylene copolymers.
- alkyl esters such as acrylic acid and methacrylic acid, and specifically, methyl acrylate, acrylyl Ethyl acid, acrylic acid-n-propyl, isopropyl acrylate, n-butyl acrylate, isobutyl acrylate, t-butyl acrylate, methacrylic acid Methyl, methyl methacrylate, methacrylic acid n-propyl, methacrylic acid isopropyl, methacrylic acid n-butyl, methacrylic acid isobutyl, methacrylic acid t Butyr and the like.
- the ethylene copolymer has an MI (measured under a condition of 190 ° C. and 2.16 kg) of 0 ⁇ 1 to: L0000. It is preferably from 0.2 to 500, more
- the polyamide-based elastomer is a polyamide-based block copolymer in which a polyamide hard segment and another soft segment are bonded.
- a soft segment for example, polyalkylene oxide (alkyl group having 2 to 6 carbon atoms) is typical.
- Polyamide components as the hard segment include Polyamide 6, Polyamide 66, Polyamide 6, 12, Polyamide 11, Polyamide 11, and Polyamide 11.
- polyether components as soft segments include polyoxyethylene glycol, polyoxypropylene glycol, polyoxytetramethylene darcol, and the like.
- a multi-block polymer using a highly crystalline aromatic polyester for the hard segment and an amorphous polyether or aliphatic polyester for the soft segment is used.
- Such hard segments include, for example, terephthalic acid-based crystalline polyesters such as poly (ethylene terephthalate), poly (butylene terephthalate), and poly (cyclohexane dimethylene terephthalate).
- terephthalic acid-based crystalline polyesters such as poly (ethylene terephthalate), poly (butylene terephthalate), and poly (cyclohexane dimethylene terephthalate).
- the soft segment include aliphatic polyethers such as polytetramethylene monoterglycol, polypropylene glycol, and polyethylene glycol, or oxalic acid, malonic acid, and succinic acid.
- Acids dartaric acid, adipic acid, pyromelic acid, speric acid, azelaic acid, sebacic acid and other aliphatic dicarboxylic acids and ethylene daricol, propylene glycol, butanediol, pentanediole, neopentyl glycol, Aliphatic polyesters obtained from dalicols such as hexanediol, octanediol, and decanediol.
- Gen-based elastomers include, for example, natural rubber, polybutadiene, polyisoprene, polyisobutylene, neoprene, polysulfide rubber, thiocol rubber, acryl rubber, urethane rubber, silicon rubber, and epichlorohydrin.
- SEBS styrene-isoprene block copolymer
- SIR styrene-isoprene block copolymer
- SEP hydrogenated styrene-isoprene block copolymer
- SIS styrene-isoprene-styrene block copolymer
- SEPS hydrogen Added styrene-isoprene-styrene block copolymer
- EPM ethylene propylene rubber
- EP DM butadiene-acrylonitrile-styrene-core-shell rubber
- ABS butadiene-acrylonitrile-styrene-core-shell rubber
- MVS methyl methacrylate
- MVS methyl methacrylate
- MAS methyl methacrylate-butyl acrylate Rate-styrene-core-shell rubber
- MABS octylacrylate-butadiene-styrene-core-shell rubber
- AABS butadiene-acrylonitrile-styrene-co Shell rubber
- AABS butadiene-styrene-core shell rubber
- SBR siloxane-containing core-shell rubbers such as methyl methacrylate-butyl acrylate-siloxane, and the like, and core-shell type particle-like elastic bodies, or rubbers modified from these.
- polyorganosiloxane-based rubbers can also be mentioned, and those obtained by copolymerizing polyorganosiloxane and a crosslinking agent are preferable.
- polyorganosiloxanes include hexamethylcyclotrisiloxane, octamethizolecyclotetrasiloxane, decamethizolecyclopentasiloxane, dodecamethylcyclohexasiloxane, and trimethyltriphenylcyclosiloxane.
- a tetrafunctional siloxane-based crosslinking agent for example, trifunctional or tetrafunctional siloxane-based crosslinking agent, such as trimethoxymethylsilane, triethoxyphenyl or the like.
- examples include silane, tetramethoxysilane, tetraethoxysilane, and tetrabutoxysilane.
- a silane compound having an epoxy group, particularly a silane compound having at least one epoxy group and at least one Si—OR group (R represents an alkyl group) in one molecule is preferable.
- R is an alkyl group having from! To 20 carbon atoms, and among them, an alkyl group having from 1 to 10 carbon atoms is preferable.
- Specific examples of epoxysilane include ⁇ -glycidoxyprovir trimethoxysilane, ⁇ - (3,4-epoxycyclohexyl) ethyl trimethoxysilane, ⁇ -glycidoxypro Piltriethoxysilane and the like.
- the method of addition is not particularly limited, and includes, for example, integer blend.
- Glycidyl ester resins such as cisidyl ester
- glycidyl epoxy resins such as dalicydylamine such as N-dalicydylulin, epoxidized polyolefin
- cyclic non-cyclic resins such as dicyclopentagendioxide Glycidyl epoxy resin, epoxy resin for novola type phenolic resin
- PAS resin composition in the PAS resin composition according to the present invention, other components may be added and blended, if necessary, in addition to the above components, as long as the object of the present invention is not impaired.
- Other components include, for example, various additives such as inorganic fillers, antioxidants, heat stabilizers, lubricants, coloring agents, plasticizers, conductivity-imparting agents, polyamides, and silicone resins.
- granular or powdery materials include, for example, talc, titanium dioxide, and the like.
- the inorganic filler a material which has been subjected to a surface treatment with a coupling agent or the like may be used in order to improve the adhesiveness with the resin.
- a coupling agent a silane-based coupling agent, a titanium-based coupling agent, or any conventionally known coupling agent can be arbitrarily selected and used.
- the mixing ratio of each component of the PAS resin composition according to the present invention is as follows. That, (1) (A) polyarylene Rensurufu Lee de resin 2 0-3 5 wt%, the preferred properly 2 0-3 0 weight 0/0, (B) silica mosquito 6 0-7 5 weight 0 /. , Favored properly 6 2-7 3 wt 0/0, (C) error scan Tomah one 1-1 0% by weight, is preferred properly 2-8 wt%, further, the total of the (A) ⁇ (C) component (D) epoxy silane 0.05 to 1.0 part by weight based on 100 parts by weight.
- the PAS resin composition can be prepared by blending each of the above components with other components selected as necessary, and then, for example, melt-kneading them.
- the melt-kneading can be performed by a commonly known method, but in any case, by uniformly mixing and dispersing the components in the resin, a predetermined resin composition is obtained. I do.
- a twin-screw extruder, a single-screw extruder, or the like can usually be suitably used.
- melt-kneading There are no particular restrictions on the conditions for melt-kneading, but it is preferable to avoid extremely high temperatures and extremely long residence times in order to limit the decomposition or foaming of other components added as necessary. .
- a specific temperature Usually, it is 280 to 350 ° C, and preferably 285 to 330 ° C.
- the PAS resin composition thus prepared is usually granulated or cut into a shape and size suitable as a material for secondary processing such as pellets, and then subjected to molding, particularly injection molding.
- the PAS resin composition according to the present invention is suitably used for sealing electronic components.
- electronic components such as diodes, transistors, LSIs, CCDs, integrated circuits such as ICs, etc., capacitors, resistors, coils, micro switches, and diodes. Switch and the like.
- the indication of the mixing ratio in the table is as follows. (A), (B), (C),
- the sum of them is 100% by weight, and each is represented by% by weight.
- the total of the components (A), (B), (C), (F) and (G) is defined as 100 parts by weight, Parts are expressed in parts by weight relative to parts. A blank indicates 0.
- the melt viscosity at 300 ° C. and 2000 seconds— 1 was 12 Pa ⁇ s.
- the melt viscosity at 300 ° C. and 200 seconds— 1 was 40 Pa ⁇ s.
- the melt viscosity at 300 ° C and 2000 seconds- 1 was 11 Pa ⁇ s.
- the melt viscosity at 300 ° C and 200 seconds- ' was 12 Pa ⁇ s.
- Component (B) (silica)
- Ethylene - ⁇ click acrylic acid Echiru one consisting of maleic anhydride copolymer manufactured by Sumitomo Chemical Co., trade name: BONDINE AX 8 3 9 0 (ethylene 6 8 weight 0/0, ⁇ click acrylic acid Echiru 3 0 wt 0/0 , anhydrous maleic phosphate 2wt 0/0)
- Ethylene one consisting accession acrylic acid Echiru anhydride maleic phosphate copolymer produced by Sumitomo Chemical Co., Ltd., trade name: BONDINE HX 8 2 9 0 (ethylene 8 5 wt%, Accession acrylic acid Echiru 1 3 wt 0/0, anhydrous maleic down Acid 2 weight 0 /.)
- ⁇ indicates no deformation, ⁇ indicates slight deformation, ⁇ indicates obvious deformation, and X indicates large deformation.
- the heat treatment cycle was performed in accordance with JISC 530, in which heating was performed at 130 ° C for 1 hour, and then cooling was performed at 140 ° C for 1 hour.
- the defective product occurrence rate (%) is shown.
- the sample was immersed in red ink at 90 ° C for 3 hours. Thereafter, the package was air-dried for 24 hours, and the one in which the red ink had reached the chip when the package was opened was determined to be “defective”. It is an index indicating thermal shock resistance.
- PAS resin composition which was particularly suitable as a stopping material was obtained.
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Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020007009268A KR20010041196A (ko) | 1998-12-24 | 1999-12-22 | 전자부품 밀봉용 폴리아릴렌 설파이드 수지 조성물 |
DE69906951T DE69906951T2 (de) | 1998-12-24 | 1999-12-22 | Polyarylensulfid-harzzusammensetzung zur verkapselung elektronischer bauteile |
EP99961302A EP1057871B1 (en) | 1998-12-24 | 1999-12-22 | Polyarylene sulfide resin composition for electronic part encapsulation |
US09/622,054 US6476106B1 (en) | 1998-12-24 | 1999-12-22 | Polyarylene sulfide resin composition for electronic parts encapsulation |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP36620698A JP4295848B2 (ja) | 1998-12-24 | 1998-12-24 | 電子部品封止用ポリアリーレンスルフィド樹脂組成物 |
JP10/366206 | 1998-12-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000039219A1 true WO2000039219A1 (en) | 2000-07-06 |
Family
ID=18486195
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1999/007200 WO2000039219A1 (en) | 1998-12-24 | 1999-12-22 | Polyarylene sulfide resin composition for electronic part encapsulation |
Country Status (8)
Country | Link |
---|---|
US (1) | US6476106B1 (ja) |
EP (1) | EP1057871B1 (ja) |
JP (1) | JP4295848B2 (ja) |
KR (1) | KR20010041196A (ja) |
CN (1) | CN1165584C (ja) |
DE (1) | DE69906951T2 (ja) |
TW (1) | TWI225082B (ja) |
WO (1) | WO2000039219A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017132869A (ja) * | 2016-01-27 | 2017-08-03 | 東ソー株式会社 | ポリアリーレンスルフィド組成物 |
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JP6901530B2 (ja) * | 2019-08-07 | 2021-07-14 | 株式会社フジクラ | 光通信部品用樹脂組成物及びこれを用いた光通信部品 |
CN111073528B (zh) * | 2019-12-31 | 2021-09-17 | 宁波大榭开发区综研化学有限公司 | 一种热固性胶黏剂和胶带及其制备方法 |
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EP0044136A1 (en) * | 1980-07-04 | 1982-01-20 | Asahi Glass Company Ltd. | Encapsulation of electronic device |
EP0062806A1 (en) * | 1981-03-26 | 1982-10-20 | Phillips Petroleum Company | Molding composition, method for preparing same and its use for semi-conductor encapsulation |
US4703074A (en) * | 1985-05-22 | 1987-10-27 | Dainippon Ink And Chemicals, Inc. | Polyphenylene sulfide resin composition containing mixture of silicon compounds |
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KR20000064264A (ko) * | 1996-07-22 | 2000-11-06 | 히라이 가쯔히꼬 | 폴리페닐렌 술피드 수지조성물 |
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- 1998-12-24 JP JP36620698A patent/JP4295848B2/ja not_active Expired - Fee Related
-
1999
- 1999-12-21 TW TW088122580A patent/TWI225082B/zh not_active IP Right Cessation
- 1999-12-22 EP EP99961302A patent/EP1057871B1/en not_active Expired - Lifetime
- 1999-12-22 US US09/622,054 patent/US6476106B1/en not_active Expired - Fee Related
- 1999-12-22 CN CNB998032808A patent/CN1165584C/zh not_active Expired - Fee Related
- 1999-12-22 DE DE69906951T patent/DE69906951T2/de not_active Expired - Lifetime
- 1999-12-22 WO PCT/JP1999/007200 patent/WO2000039219A1/ja not_active Application Discontinuation
- 1999-12-22 KR KR1020007009268A patent/KR20010041196A/ko not_active Application Discontinuation
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EP0062806A1 (en) * | 1981-03-26 | 1982-10-20 | Phillips Petroleum Company | Molding composition, method for preparing same and its use for semi-conductor encapsulation |
US4703074A (en) * | 1985-05-22 | 1987-10-27 | Dainippon Ink And Chemicals, Inc. | Polyphenylene sulfide resin composition containing mixture of silicon compounds |
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JPH11349813A (ja) * | 1998-06-05 | 1999-12-21 | Idemitsu Petrochem Co Ltd | 電子部品封止用ポリアリーレンスルフィド樹脂組成物 |
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JP2017132869A (ja) * | 2016-01-27 | 2017-08-03 | 東ソー株式会社 | ポリアリーレンスルフィド組成物 |
Also Published As
Publication number | Publication date |
---|---|
US6476106B1 (en) | 2002-11-05 |
JP2000186209A (ja) | 2000-07-04 |
EP1057871A4 (en) | 2002-01-16 |
TWI225082B (en) | 2004-12-11 |
CN1165584C (zh) | 2004-09-08 |
EP1057871B1 (en) | 2003-04-16 |
JP4295848B2 (ja) | 2009-07-15 |
DE69906951D1 (de) | 2003-05-22 |
EP1057871A1 (en) | 2000-12-06 |
CN1292019A (zh) | 2001-04-18 |
KR20010041196A (ko) | 2001-05-15 |
DE69906951T2 (de) | 2004-01-29 |
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