WO2018061730A1 - 結晶性ポリエステル樹脂および難燃性封止樹脂組成物 - Google Patents
結晶性ポリエステル樹脂および難燃性封止樹脂組成物 Download PDFInfo
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- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/66—Polyesters containing oxygen in the form of ether groups
- C08G63/668—Polyesters containing oxygen in the form of ether groups derived from polycarboxylic acids and polyhydroxy compounds
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- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
- C08G63/18—Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
- C08G63/181—Acids containing aromatic rings
- C08G63/185—Acids containing aromatic rings containing two or more aromatic rings
- C08G63/187—Acids containing aromatic rings containing two or more aromatic rings containing condensed aromatic rings
- C08G63/189—Acids containing aromatic rings containing two or more aromatic rings containing condensed aromatic rings containing a naphthalene ring
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- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
- C08G63/18—Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
- C08G63/199—Acids or hydroxy compounds containing cycloaliphatic rings
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- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/52—Polycarboxylic acids or polyhydroxy compounds in which at least one of the two components contains aliphatic unsaturation
- C08G63/54—Polycarboxylic acids or polyhydroxy compounds in which at least one of the two components contains aliphatic unsaturation the acids or hydroxy compounds containing carbocyclic rings
- C08G63/553—Acids or hydroxy compounds containing cycloaliphatic rings, e.g. Diels-Alder adducts
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- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/66—Polyesters containing oxygen in the form of ether groups
- C08G63/668—Polyesters containing oxygen in the form of ether groups derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/672—Dicarboxylic acids and dihydroxy compounds
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- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
- C08K5/521—Esters of phosphoric acids, e.g. of H3PO4
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- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/53—Phosphorus bound to oxygen bound to oxygen and to carbon only
- C08K5/5313—Phosphinic compounds, e.g. R2=P(:O)OR'
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J167/00—Adhesives based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Adhesives based on derivatives of such polymers
- C09J167/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- C08G2190/00—Compositions for sealing or packing joints
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- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0066—Flame-proofing or flame-retarding additives
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- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K2003/1034—Materials or components characterised by specific properties
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- C09K2200/00—Chemical nature of materials in mouldable or extrudable form for sealing or packing joints or covers
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- C09K2200/00—Chemical nature of materials in mouldable or extrudable form for sealing or packing joints or covers
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- C09K2200/0645—Macromolecular organic compounds, e.g. prepolymers obtained otherwise than by reactions involving carbon-to-carbon unsaturated bonds
- C09K2200/0655—Polyesters
Definitions
- the present invention relates to a crystalline polyester resin and a flame-retardant sealing resin composition using the crystalline polyester resin.
- Thermoplastic hot melt materials whose viscosity decreases when heated to a temperature above the melting point are excellent in work environment and productivity because they do not contain solvents and have excellent initial adhesive strength, and are widely used in various fields. ing.
- Examples of applications of the hot melt material as described above include, for example, molding and sealing of electric and electronic parts used in automobiles and electrical appliances. Sealing electrical and electronic parts with a hot-melt material is extremely important from the viewpoint of maintaining electrical insulation from the outside, waterproofing, and dustproofing, and leads to simplification of processes and cost reduction. Especially when sealing electrical and electronic parts with complicated shapes such as circuit boards, it is possible to reliably follow the shape of the electrical and electronic parts and prevent the occurrence of unfilled parts. From the viewpoint of tact, hot melt materials with good fluidity are preferred. On the other hand, from the viewpoint of maintaining the environmental reliability of electrical and electronic parts, heat resistance is required as the sealing material, and the hot melt material needs to have a certain melting point or higher.
- thermoplastic hot melt material that has both a high melting point and high fluidity has been demanded.
- an example in which an ethylene copolymer resin is a main component and a wax is used to improve viscosity characteristics at low temperatures is shown (Patent Document 1).
- an example using a polyamide-based hot melt material can be given (Patent Document 2).
- the wax described in Patent Document 1 has problems such as bleeding concerns during long-term storage and a decrease in heat resistance above the melting point of the wax.
- the polyamide described in Patent Document 2 has a problem of handling properties such as high water absorption and difficulty in water management at the time of molding, and also has a problem that adhesiveness is lowered in a humid heat environment.
- an object of the present invention is to provide a crystalline polyester resin (A) having both a high melting point and a high fluidity and a flame-retardant sealing resin composition using the same.
- this invention consists of the following structures.
- the copolymerization ratio of the 1,4-cyclohexanedimethanol component is 60 mol% or more, and the number average molecular weight is 5,000-50. It is preferable that the crystalline melting point is 100 ° C. to 180 ° C.
- the flame retardant (B) is preferably a phosphate ester or a phosphinic acid metal salt.
- the ratio W (A) / W (B) of the weight fraction W (A) of the crystalline polyester resin (A) and the weight fraction W (B) of the flame retardant (B) is preferably 3 to 20,
- the sum of W (A) of the crystalline polyester resin (A) and the weight fraction W (B) of the flame retardant (B) with respect to the total weight of the flame retardant sealing resin composition is preferably 50 to 90% by weight. .
- the crystalline polyester resin (A) of the present invention can be made low in melt viscosity while maintaining a high melting point by optimizing monomer selection and copolymerization amount. Moreover, even if this crystalline polyester resin (A) mix
- the crystalline polyester resin (A) of the present invention comprises a polyvalent carboxylic acid component and a polyhydric alcohol component as a copolymerization component.
- the total polyvalent carboxylic acid component of the crystalline polyester resin (A) is 100 mol%, it is necessary that the 2,6-naphthalenedicarboxylic acid component is copolymerized in an amount of 40 mol% or more.
- it is 50 mol% or more, more preferably 60 mol% or more, still more preferably 70 mol% or more, particularly preferably 80 mol% or more, most preferably 90 mol% or more, 100 Even mol% is acceptable. If the amount is too small, the crystallinity may be lowered.
- the copolymerization ratio of the dimer acid component is preferably 10 mol% or more, more preferably 20 mol% or more. If the amount is too small, the glass transition temperature becomes high and the fluidity may be lowered. Moreover, it is preferable that it is 60 mol% or less, More preferably, it is 50 mol% or less. If the amount is too large, the crystallinity of the crystallized polyester resin (A) may decrease.
- dicarboxylic acid components other than the 2,6-naphthalenedicarboxylic acid and dimer acid, and trivalent or higher polycarboxylic acid components can be copolymerized.
- dicarboxylic acid component include terephthalic acid, 1,4-naphthalenedicarboxylic acid, 1,5-naphthalenedicarboxylic acid, 4,4′-biphenyldicarboxylic acid, isophthalic acid, orthophthalic acid, diphenoxyethanedicarboxylic acid, 4,4 ′.
- -Aromatic dicarboxylic acids such as diphenyl ether dicarboxylic acid, 4,4'-diphenyl ketone dicarboxylic acid, aliphatic dicarboxylic acids such as adipic acid, sebacic acid, succinic acid, glutaric acid, hexahydroterephthalic acid, hexahydroisophthalic acid, 1 , 2-cyclohexanedicarboxylic acid, 1,3-cyclohexanedicarboxylic acid, 1,4-cyclohexanedicarboxylic acid and other alicyclic dicarboxylic acids.
- terephthalic acid is preferable from the viewpoints of polymerizability, cost, and crystallinity.
- the trivalent or higher polycarboxylic acid component include polycarboxylic acids such as trimellitic acid, pyromellitic acid, benzophenone tetracarboxylic acid, biphenyl sulfone tetracarboxylic acid, biphenyl tetracarboxylic acid, and anhydrides thereof. it can.
- These dicarboxylic acid components and trivalent or higher polycarboxylic acid components may be used alone or in combination of two or more.
- the copolymerization ratio of these polyvalent carboxylic acid components is preferably 5 mol% or less, more preferably 2 mol, when the total polyvalent carboxylic acid component of the crystalline polyester resin (A) is 100 mol%. % Or less, more preferably 1 mol% or less, and 0 mol% may be used.
- the polyhydric alcohol component of the crystalline polyester resin (A) a 1,4-butanediol component is copolymerized, and the copolymerization ratio is 40 mol% or less when the total polyhydric alcohol component is 100 mol%. It is necessary to be. Preferably it is 35 mol% or less, More preferably, it is 30 mol% or less. If the amount is too large, the crystallinity becomes strong, so that the solidification rate becomes fast and the fluidity may deteriorate. Furthermore, in the case of an application that requires flame retardancy, flame retardancy tends to be reduced because combustible gas is generated during combustion.
- the copolymerization ratio of the 1,4-butanediol component is preferably 5 mol% or more, more preferably 10 mol% or more, and further preferably 20 mol% or more. If the amount is too small, crystallinity may not be sufficiently exhibited, tackiness may occur, and mechanical strength may be reduced. Furthermore, it may cause molding failure and the tact time may be increased.
- a 1,4-cyclohexanedimethanol component is copolymerized as the polyhydric alcohol component of the crystalline polyester resin (A).
- the copolymerization ratio of the 1,4-cyclohexanedimethanol component is preferably 60 mol% or more, more preferably 65 mol% or more, and still more preferably, when the total polyhydric alcohol component is 100 mol%. It is 70 mol% or more.
- the amount is too small, the melt viscosity of the crystalline polyester resin (A) increases, and the fluidity may decrease. Moreover, it is preferable that it is 80 mol% or less. If the amount is too large, the crystallinity may not be sufficiently exhibited, tackiness may occur, and the mechanical strength may decrease. Furthermore, it may cause molding failure and the tact time may be increased.
- glycol components other than the 1,4-butanediol component and 1,4-cyclohexanedimethanol component, and trihydric or higher polyalcohol components can be copolymerized.
- examples of other glycol components include ethylene glycol, diethylene glycol, propylene glycol, 1,3-propanediol, 1,2-butylene glycol, 1,3-butylene glycol, 2,3-butylene glycol, 1,5 -Pentanediol, 1,6-hexanediol, 3-methyl-1,5-pentanediol, 2-methyl-1,5-pentanediol, 2-methyl-1,3-propanediol, 2-ethyl-1, 3-propanediol, neopentyl glycol, 2-ethyl-2-methyl-1,3-propanediol, 2,2-diethyl-1,3-propanediol, 2-methyl-2-
- ethylene glycol, 1,3-propanediol, or neopentyl glycol is preferable in view of heat resistance, polymerizability, molding, cost, and the like.
- diethylene glycol may be by-produced during the production of the crystalline polyester resin (A) to become a copolymer component.
- the trihydric or higher polyalcohol component include trimethylolethane, trimethylolpropane, glycerin and pentaerythritol. These glycol components and trihydric or higher polyalcohol components may be used alone or in combination of two or more.
- the copolymerization ratio of these polyhydric alcohol components is preferably 5 mol% or less, more preferably 2 mol% or less, when the total polyhydric alcohol component of the crystalline polyester resin (A) is 100 mol%. More preferably, it is 1 mol% or less, and it may be 0 mol%.
- a polyalkylene ether glycol component may be copolymerized.
- the copolymerization ratio is preferably 1 mol% or more, more preferably 2 mol% or more, and still more preferably, when the total polyhydric alcohol component of the crystalline polyester resin (A) is 100 mol%. It is 3 mol% or more, and it is preferable that it is 30 mol% or less, More preferably, it is 20 mol% or less, More preferably, it is 10 mol% or less.
- the polyalkylene ether glycol component is a generic name for triethylene glycol, polyethylene glycol, polytrimethylene glycol, polytetramethylene glycol, polypropylene glycol, and the like.
- crystallity means that the temperature is raised from ⁇ 130 ° C. to 250 ° C. at 20 ° C./min using a differential scanning calorimeter (DSC) and shows a clear melting peak in the temperature raising process. . Since the polyester resin is crystalline, an effect of improving heat resistance and mechanical properties can be expected.
- the catalyst used for producing the crystalline polyester resin (A) is not particularly limited, but at least one compound selected from the group consisting of Ge, Sb, Ti, Al, Mn and Mg may be used. preferable. These compounds can be added to the reaction system as, for example, powders, aqueous solutions, ethylene glycol solutions, ethylene glycol slurries, and the like.
- a stabilizer can be added to the crystalline polyester resin (A) within a range not impairing the effects of the present invention.
- phosphoric acid other than flame retardant (B) phosphoric acid esters such as polyphosphoric acid and trimethyl phosphate, phosphonic acid compounds, phosphinic acid compounds, phosphine oxide compounds, phosphonous acid compounds, phosphinic acid compounds It is preferable to use at least one phosphorus compound selected from the group consisting of a compound and a phosphine compound.
- the acid value of the crystalline polyester resin (A) is preferably 1 to 40 eq / ton, more preferably 2 to 30 eq / ton, and further preferably 3 to 20 eq / ton.
- the acid value exceeds 40 eq / ton, light resistance tends to decrease.
- the acid value is less than 1 eq / ton, the polycondensation reactivity tends to decrease and the productivity tends to deteriorate.
- the number average molecular weight of the crystalline polyester resin (A) is preferably 5,000 or more, more preferably 10,000 or more, and further preferably 15,000 or more. If it is too small, the mechanical strength cannot be maintained. Moreover, it is preferable that it is 50,000 or less, More preferably, it is 40,000 or less, More preferably, it is 30,000 or less. If it is too large, the melt viscosity becomes high.
- the melting point of the crystalline polyester resin (A) is preferably 100 ° C. or higher, more preferably 110 ° C. or higher, and further preferably 120 ° C. or higher. If it is too low, the heat resistance may decrease. Moreover, it is preferable that it is 180 degrees C or less, More preferably, it is 160 degrees C or less, More preferably, it is 140 degrees C or less. If it is too high, it is necessary to apply high heat during sealing, which may promote heat aging.
- the glass transition temperature of the crystalline polyester resin (A) is preferably ⁇ 50 ° C. or higher, more preferably ⁇ 40 ° C. or higher, and further preferably ⁇ 30 ° C. or higher. If it is too low, mechanical properties at high temperatures and resin strength may be reduced. Further, it is preferably 10 ° C. or lower, more preferably 0 ° C. or lower, and further preferably ⁇ 10 ° C. or lower. If it is too high, mechanical properties in a low temperature environment may be deteriorated.
- the reduced viscosity (dl / g) of the crystalline polyester resin (A) is preferably 0.2 or more, more preferably 0.3 or more, and further preferably 0.4 or more. Moreover, it is preferable that it is 1.0 or less, More preferably, it is 0.8 or less, More preferably, it is 0.7 or less. By setting the amount within the above range, a resin having a good balance between mechanical properties and fluidity can be expected.
- the melt viscosity (dPa ⁇ s) at 220 ° C. of the crystalline polyester resin (A) is preferably 500 or less, more preferably 400 or less, and further preferably 300 or less.
- the lower limit is not particularly limited, but 10 is sufficient industrially.
- the crystalline polyester resin (A) of the present invention has a high melting point and high fluidity, it is suitably used as a hot melt sealing material. In particular, it is suitably used as a hot melt sealing material for electric and electronic parts.
- a flame retardant (B) is mix
- the flame retardant (B) is not particularly limited, but is preferably a non-halogen phosphorus flame retardant having a phosphorus atom in the structure, more preferably a phosphate ester flame retardant, and even more preferably phosphoric acid. It is an ester or a phosphinic acid metal salt, and a phosphinic acid metal salt is particularly preferred.
- tris (diethylphosphinic acid) aluminum bisphenol A bis (diphenyl phosphate), triaryl isopropylate, cresyl di-2,6-xylenyl phosphate, and aromatic condensed phosphate.
- the phosphorus content in the flame retardant (B) is preferably 10% by weight or more, more preferably 15% by weight or more, and further preferably 20% by weight or more. Moreover, it is preferable that it is 40 weight% or less, More preferably, it is 30 weight% or less, More preferably, it is 25 weight% or less. By setting it within the above range, excellent flame retardancy can be exhibited while maintaining good fluidity.
- the decomposition temperature of the flame retardant (B) is preferably 250 ° C. or higher, more preferably 280 ° C. or higher, and further preferably 300 ° C. or higher. By setting it within the above range, excellent flame retardancy can be expected.
- flame retardants and flame retardant aids include melamine cyanurate, red phosphorus, nitrogen-containing phosphoric acid compounds, hydrotalcite compounds and alkali compounds.
- the nitrogen-containing phosphate compound includes a reaction product of melamine or a condensate of melamine such as melam, melem and melon and polyphosphoric acid or a mixture thereof.
- These flame retardants and flame retardant aids may be used alone or in combination with the flame retardant (B).
- the flame-retardant sealing resin composition of the present invention is a composition containing the crystalline polyester resin (A) and a flame retardant (B).
- W (A) / W (B) is preferably 3 or more, more preferably 4 or more, and still more preferably 5 or more.
- W (A) / W (B) is less than 3, there may be a problem that physical properties such as fluidity and mechanical properties of the crystalline polyester resin (A) are lowered.
- W (A) / W (B) is preferably 20 or less, more preferably 15 or less, and further preferably 10 or less. If it exceeds 20, the flame retardancy may decrease.
- the flame retardant encapsulating resin composition of the present invention comprises the weight fraction W (A) of the crystalline polyester resin (A) and the weight fraction W of the flame retardant (B) in the total weight of the flame retardant encapsulating resin composition.
- the sum of (B) is preferably 50% by weight or more, and more preferably 60% by weight or more. If the amount is too small, the fluidity and flame retardancy of the flame retardant sealing resin composition may not be exhibited. Moreover, it is preferable that it is 90 weight% or less, and it is more preferable that it is 80 weight% or less. If the amount is too large, the adhesiveness may decrease.
- the melt viscosity (dPa ⁇ s) at 220 ° C. of the flame retardant sealing resin composition is preferably 1500 or less, more preferably 1000 or less, and even more preferably 500 or less.
- the lower limit is not particularly limited, but 10 is sufficient industrially. By setting it in the above range, a flame-retardant sealing resin composition having good fluidity can be obtained.
- the flame-retardant sealing resin composition of the present invention has excellent fluidity and flame retardancy, it is suitably used as a flame-retardant hot melt sealant. In particular, it is suitably used as a hot melt sealant for electric and electronic parts.
- antioxidants include, for example, 1,3,5-tris (3,5-di-t-butyl-4-hydroxybenzyl) isocyanurate, 1,1,3-tri (4 -Hydroxy-2-methyl-5-tert-butylphenyl) butane, 1,1-bis (3-tert-butyl-6-methyl-4-hydroxyphenyl) butane, 3,5-bis (1,1-dimethyl) Ethyl) -4-hydroxy-benzenepropanoic acid, pentaerythrityltetrakis (3,5-di-t-butyl-4-hydroxyphenyl) propionate, 3- (1,1-dimethylethyl) -4-hydroxy- 5-methyl-benzenepropanoic acid, 3,9-
- the addition amount is preferably 0.1% by weight or more and 5% by weight or less based on the entire flame-retardant sealing resin composition. If it is less than 0.1% by weight, the antioxidant effect may be poor. On the other hand, if it exceeds 5% by weight, the adhesion and the like may be adversely affected.
- a light stabilizer for example, as the benzotriazole light stabilizer, 2- (3,5-di-tert-amyl-2′hydroxyphenyl) benzotriazole, 2- (2-hydroxy-5-tert-octylphenyl) benzotriazole, 2 -(2'-hydroxy-3'-tert-butyl-5'-methylphenyl) -5-chlorobenzotriazole, 2- (2H-benzotriazol-2-yl) -p-cresol, 2- (2'- Hydroxy-5′-methylphenyl) -benzotriazole, 2,4-di-tert-butyl-6- (5-chlorobenzotriazol-2-yl) phenol, 2- [2-hydroxy-3,5-di ( 1,1-dimethylbenzyl)]-2H-benzotriazole, and the like
- benzophenone light stabilizers examples include 2-hydroxy-4- (octyloxy) benzophenone, 2,4-dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxybenzophenone, and 2-hydroxy-4.
- -Methoxy-benzophenone-5-sulfonic acid 2-hydroxy-4-n-dodecyloxybenzophenone, bis (5-benzoyl-4-hydroxy-2-methoxyphenyl) methane
- 2,2'-dihydroxy-4- Examples include methoxybenzophenone and 2,2′-dihydroxy-4,4′-dimethoxybenzophenone, but are not limited thereto, and any benzophenone light stabilizer can be used as appropriate.
- the hindered amine light stabilizer is bis (2,2,6,6-tetramethyl-4-piperidyl) sebacate, dimethyl succinate, 1- (2-hydroxyethyl) -4-hydroxy-2,2, 6,6-tetramethylpiperidine polycondensate, poly [ ⁇ 6- (1,1,3,3-tetramethylbutyl) amino-1,3,5-triazine-2,4-diyl ⁇ ⁇ (2,2 , 6,6-tetramethyl-4-piperidyl) imino ⁇ hexamethylene (2,2,6,6-tetramethyl-4-piperidyl) imino], 1,3,5-tris (3,5-di-tert -Butyl-4-hydroxybenzyl) -s-triazine-2,4,6 (1H, 3H, 5H) trione, tris (4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl) -s-triazine -2,4 6- (1H, 3H, 5H
- Nickel-based light stabilizers include [2,2′-thio-bis (4-tert-octylphenolate)]-2-ethylhexylamine-nickel- (II), nickel dibutyldithiocarbamate, [2 ′, 2 ′ -Thio-bis (4-tert-octylphenolate)] n-butylamine-nickel and the like, but not limited thereto, any nickel-based light stabilizer can be used as appropriate.
- Examples of the benzoate-based light stabilizer include 2,4-di-t-butylphenyl-3,5′-di-tert-butyl-4′-hydroxybenzoate, but are not limited thereto. Any stabilizer can be used as appropriate.
- the addition amount is preferably 0.1% by weight or more and 5% by weight or less based on the entire flame-retardant sealing resin composition. If it is less than 0.1% by weight, the weather resistance effect may be poor. If it exceeds 5% by weight, the adhesion may be adversely affected.
- additives can be used in the crystalline polyester resin (A) or the flame-retardant sealing resin composition of the present invention as long as the effects of the present invention are not impaired.
- additives include impact modifiers, slidability improvers, colorants, plasticizers, crystal nucleating agents, and thermoplastic resins other than polyester.
- a crystal nucleating agent may be added to the crystalline polyester resin (A) or the flame-retardant sealing resin composition of the present invention. Transparency can be enhanced by adding 0.01 to 5 parts by weight of a crystal nucleating agent to 100 parts by weight of the crystalline polyester resin (A).
- the crystal nucleating agent has an effect of accelerating the crystallization speed of the crystalline polyester resin (A), completing the crystallization quickly, and controlling the size of the spherulites by adjusting the number of crystal nuclei.
- the crystal nucleating agent include inorganic fine particles such as talc, silica, graphite, carbon powder, pyroferrite, gypsum, and neutral clay, metal oxides such as magnesium oxide, aluminum oxide, and titanium dioxide, sulfate, and phosphoric acid. Salt, silicate, oxalate, stearate, benzoate, salicylate, tartrate, sulfonate, montanic acid wax salt, montanic acid wax ester salt, terephthalate, carboxylate, ⁇ -olefin And an ionic copolymer comprising ⁇ , ⁇ -unsaturated carboxylic acid.
- inorganic fine particles such as talc, silica, graphite, carbon powder, pyroferrite, gypsum, and neutral clay
- metal oxides such as magnesium oxide, aluminum oxide, and titanium dioxide, sulfate, and phosphoric acid.
- Salt silicate, oxalate, stearate, benzoate,
- zinc salts of fatty acids such as hexanoic acid, lauric acid, stearic acid, and montanic acid
- metal salts such as calcium salt, magnesium salt, sodium salt, and lithium salt are preferable because the crystallization rate can be easily adjusted.
- a sodium salt of a fatty acid is used, the control of the spherulite size is facilitated, and a transparent molded product is easily obtained.
- thermoplastic resin different from the crystalline polyester resin (A) is added to the crystalline polyester resin (A) or the flame-retardant sealing resin composition of the present invention within a range not impairing the effects of the present invention, good.
- thermoplastic resins can be blended in a molten state by melt kneading.
- the thermoplastic resin may be made into a fiber or particle and dispersed in the crystalline polyester resin (A) of the present invention.
- An optimum amount of the thermoplastic resin may be selected, but a maximum of 50 parts by weight can be added to 100 parts by weight of the crystalline polyester resin (A).
- the crystalline polyester resin (A) or the flame-retardant sealing resin composition of the present invention can be produced by blending the above-described constituent components by a conventionally known method. For example, each component is added during the polycondensation reaction of the crystalline polyester resin (A), the crystalline polyester resin (A) and other components are dry blended, or a twin screw type extruder is used. The method of melt-kneading each structural component can be mentioned.
- Examples of the method for determining the composition and composition ratio of the crystalline polyester resin (A) include 1 H-NMR and 13 C-NMR in which the crystalline polyester resin (A) is dissolved in a solvent such as deuterated chloroform. It is done. Further, quantitative determination by gas chromatography measured after methanolysis of the crystalline polyester resin (A) (hereinafter sometimes abbreviated as methanolysis-GC method), acid value (AV) measurement of the crystalline polyester resin (A), DSC Measurement of melting point (Tm), glass transition temperature (Tg), and the like. In the present invention, when there is a solvent that can dissolve the crystalline polyester resin (A) and is suitable for 1 H-NMR measurement, the composition and composition ratio are determined by 1 H-NMR.
- ⁇ Measurement of number average molecular weight of crystalline polyester resin (A)> A sample of crystalline polyester resin (A) (0.0050 g) is dissolved by heating in 5 ml of chloroform. Then, it filters with a membrane filter and removes insoluble matter. 80 ⁇ l of the filtrate (sample solution) was measured by GPC “EZChrom Elite for Hitachi” manufactured by Hitachi High-Tech Fielding Co., Ltd., and the number average molecular weight was determined. A polystyrene solution was prepared as a standard substance and used as a sample for a GPC calibration curve.
- a 0.1 g sample of the crystalline polyester resin (A) is dissolved by heating in 10 ml of benzyl alcohol. Then, the acid value was calculated
- intersection of the tangent line (1) obtained from the base line before the inflection point and the tangent line (2) obtained from the base line after the inflection point in the portion where the inflection point appears in the DDSC as shown in FIG. was the glass transition temperature, and the minimum point of the endothermic peak (x in the figure) was the melting point.
- a flat plate (100 mm ⁇ 100 mm ⁇ 10 mm) made of a crystalline polyester resin (A) was molded using a low pressure molding applicator IMC-18F9 manufactured by Imoto Seisakusho as a hot melt molding processing applicator.
- the gate position was the center of a 100 mm ⁇ 100 mm surface.
- Molding conditions molding resin temperature 220 ° C., molding pressure 3 MPa, holding pressure 3 MPa, cooling time 15 seconds, discharge rotation 50%.
- Test pieces made of a flame-retardant sealing resin composition of 125 mm ⁇ 13 mm ⁇ 1.6 mm were produced by injection molding using a vertical injection molding machine (TH40E manufactured by Nissei Plastic Co., Ltd.). The injection molding conditions were a molding resin temperature of 200 ° C., a molding pressure of 25 MPa, a cooling time of 25 seconds, and an injection speed of 20 mm / second.
- Example 1 Example of production of crystalline polyester resin (A-1)>
- a reaction vessel equipped with a stirrer, a thermometer, and a condenser for distillation 176 parts by weight of 2,6-naphthalenedicarboxylic acid, 137 parts by weight of 1,4-butanediol, 69 parts by weight of 1,4-cyclohexanedimethanol, 0.1 part by weight of tetrabutyl titanate was added, and esterification was performed at 170 to 220 ° C. for 2 hours. Thereafter, 46 parts by weight of dimer acid was added, and esterification was performed at 200 to 230 ° C. for 2 hours.
- Examples 2-12 ⁇ Production Example of Crystalline Polyester Resin (A-2 to A-12)> Crystalline polyester resins (A-2 to A-12) were synthesized in the same manner as in Example 1. However, the types and blending ratios of the raw materials were changed as described in Table 1.
- PTMG1000 polytetramethylene ether glycol (number average molecular weight 1000)
- PTMG2000 polytetramethylene ether glycol (number average molecular weight 2000)
- the flame retardant (B) used in Tables 2 and 3 is Exolit (registered trademark) OP1240 (manufactured by Clariant).
- the crystalline polyester resin of the present invention Since the crystalline polyester resin of the present invention has high fluidity while maintaining a high melting point, it is excellent in environmental reliability and productivity, and is particularly useful as a resin composition for sealing electrical and electronic parts.
- the flame-retardant encapsulating resin composition using the crystalline polyester resin of the present invention has a low melt viscosity when encapsulating electrical and electronic parts and the like, and is excellent in flame retardancy. It is useful as a sealing resin composition.
- the flame-retardant encapsulating resin composition of the present invention is particularly excellent in flame retardancy, ignition and fire spread are suppressed against electric leakage and overcurrent from electrical and electronic parts, which are very useful.
- the electrical and electronic component encapsulated body sealed with the flame retardant encapsulating resin composition of the present invention includes, for example, automobiles, communications, computers, various connectors for household appliances, harnesses or electronic components, switches having printed circuit boards, and sensors. It is useful as a molded product.
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Abstract
Description
本発明の結晶性ポリエステル樹脂(A)は、多価カルボン酸成分と多価アルコール成分を共重合成分とするものである。結晶性ポリエステル樹脂(A)の全多価カルボン酸成分を100モル%としたとき、2,6-ナフタレンジカルボン酸成分が40モル%以上共重合していることが必要である。好ましくは50モル%以上であり、より好ましくは60モル%以上であり、さらに好ましくは70モル%以上であり、特に好ましくは80モル%以上であり、最も好ましくは90モル%以上であり、100モル%でも差し支えない。少なすぎると、結晶性が低下することがある。
ジカルボン酸成分としては、テレフタル酸、1,4-ナフタレンジカルボン酸、1,5-ナフタレンジカルボン酸、4,4’-ビフェニルジカルボン酸、イソフタル酸、オルトフタル酸、ジフェノキシエタンジカルボン酸、4,4’-ジフェニルエーテルジカルボン酸、4,4’-ジフェニルケトンジカルボン酸等の芳香族ジカルボン酸、アジピン酸、セバシン酸、コハク酸、グルタル酸等の脂肪族ジカルボン酸、ヘキサヒドロテレフタル酸、ヘキサヒドロイソフタル酸、1,2-シクロヘキサンジカルボン酸、1,3-シクロヘキサンジカルボン酸、1,4-シクロヘキサンジカルボン酸等の脂環族ジカルボン酸などが挙げられる。これらの中では、重合性、コスト、結晶性の点からテレフタル酸が好ましい。また、3価以上のポリカルボン酸成分としては、トリメリット酸、ピロメリット酸、ベンゾフェノンテトラカルボン酸、ビフェニルスルホンテトラカルボン酸、ビフェニルテトラカルボン酸などの多価カルボン酸及びその無水物を挙げることができる。これらジカルボン酸成分や3価以上のポリカルボン酸成分を単独でまたは2種以上を併用しても構わない。これらの多価カルボン酸成分の共重合比率は、結晶性ポリエステル樹脂(A)の全多価カルボン酸成分を100モル%としたとき、5モル%以下であることが好ましく、より好ましくは2モル%以下であり、さらに好ましくは1モル%以下であり、0モル%でも差し支えない。
難燃剤(B)は難燃性封止樹脂組成物の難燃性を向上させるために配合されるものである。難燃剤(B)は、特に限定されないが、リン原子を構造中に有する非ハロゲン系のリン系難燃剤であることが好ましく、より好ましくはリン酸エステル系難燃剤であり、さらに好ましくはリン酸エステルまたはホスフィン酸金属塩であり、ホスフィン酸金属塩が特に好ましい。具体的には、トリス(ジエチルホスフィン酸)アルミニウム、ビスフェノールAビス(ジフェニルホスフェート)、リン酸トリアリールイソプロピル化物、クレジルジ2、6-キシレニルホスフェート、芳香族縮合リン酸エステルが挙げられる。
本発明の難燃性封止樹脂組成物は、前記結晶性ポリエステル樹脂(A)と難燃剤(B)とを含有する組成物である。難燃性封止樹脂組成物は、結晶性ポリエステル樹脂(A)の重量分率をW(A)とし、難燃剤(B)の重量分率W(B)としたとき、W(A)/W(B)が3以上であることが好ましく、より好ましくは4以上であり、さらに好ましくは5以上である。W(A)/W(B)が3未満であると結晶性ポリエステル樹脂(A)の溶融時の流動性や機械特性などの物性を低下させるといった問題が生じることがある。また、W(A)/W(B)が20以下であることが好ましく、より好ましくは15以下であり、さらに好ましくは10以下である。20を超えると難燃性が低下することがある。
結晶性ポリエステル樹脂(A)のサンプル0.1±0.005gおよびフェノールテトラクロロエタンを25mlのメスフラスコに入れ、加熱溶解させる。25ml溶液を調整し、調整したサンプル溶液を粘度管に入れ、サンプル溶液が30℃になるように30℃の水槽に15~20分入れる。所定の温度になり次第、粘度管の標線を確認しながら落下秒数を測定し、ブランクの溶媒の落下秒数の差から還元粘度を算出する。算出式は式1に示す。
式1:{(サンプル溶液の落下秒数)―(ブランクの落下秒数)}/(ブランクの落下秒数)/(ポリエステル樹脂の重量×4)
結晶性ポリエステル樹脂(A)のサンプル0.0050gをクロロホルム5mlで加熱溶解する。その後、メンブレンフィルターにてろ過し、不溶分を除去する。ろ液(サンプル溶液)80μlを株式会社日立ハイテクフィールディング社製のGPC「EZChrom Elite for Hitachi」にて測定し、数平均分子量を求めた。
標準物質としてポリスチレン溶液を調製し、GPC較正曲線用試料とした。
結晶性ポリエステル樹脂(A)のサンプル0.1gをベンジルアルコール10mlに加熱溶解する。その後、0.1NのNaOHのメタノール/ベンジルアルコール(1/9容積比)の溶液を使用して滴定にて酸価を求めた。
セイコー電子工業株式会社製の示差走査熱量分析計「DSC220型」にて、測定試料(結晶性ポリエステル樹脂(A))5mgをアルミパンに入れ、蓋を押さえて密封する。次いで、一度250℃で5分ホールドした後、液体窒素で急冷して、その後-130℃から250℃まで、20℃/minの昇温速度で測定した。得られた曲線においての図1に示したようなDDSCで変極点が表れる部分の変極点前のベースラインから得られる接線(1)と変極点後のベースラインから得られる接線(2)の交点をガラス転移温度、吸熱ピークの極小点(図内×印)を融点とした。
結晶性ポリエステル樹脂(A)および難燃性封止樹脂組成物の溶融粘度の評価方法
島津製作所製、フローテスター(CFT-500C型)にて、220℃に設定した加熱体中央のシリンダー中に水分率0.1%以下に乾燥した結晶性ポリエステル樹脂(A)または難燃性封止樹脂組成物を充填する。充填1分経過後、プランジャーを介して試料に荷重を加え、圧力1MPaで、シリンダー底部のダイ(孔径:1.0mm、厚み:10mm)より、溶融した試料を押出し、プランジャーの降下距離と降下時間を記録し、溶融粘度を算出した。
評価基準
[結晶性ポリエステル樹脂(A)]
◎:300dPa・s以下(測定温度:220℃)
○:300dPa・s超、400dPa・s以下(測定温度:220℃)
△:400dPa・s超、500dPa・s以下(測定温度:220℃)
×:500dPa・s超(測定温度:220℃)
[難燃性封止樹脂組成物]
◎:500dPa・s以下(測定温度220℃)
○:500dPa・s超、1000dPa・s以下(測定温度220℃)
△:1000dPa・s超、1500dPa・s以下(測定温度220℃)
×:1500dPa・s超(測定温度220℃)
溶融粘度が高すぎると電気電子部品封止時に流動性が低下し、封止不足(ショート)が発生したり、高圧成形が必須となり、電気電子部品に負荷がかかる他、成型品生産時に多数個取りができないなど、生産タクト上、悪影響を及ぼす可能性がある。
平板成型用金型を使用し、ホットメルト成型加工用アプリケーターとして井元製作所製低圧成型アプリケーターIMC-18F9を用いて結晶性ポリエステル樹脂(A)からなる平板(100mm×100mm×10mm)を成型した。なお、ゲート位置は100mm×100mmの面の中心とした。
成型条件:成型樹脂温度220℃、成型圧力3MPa、保圧圧力3MPa、冷却時間15秒、吐出回転50%設定。
○:完全に充填される(ショーショット無し)。
△:ショートショット無く充填されるが、ヒケ有り。
×:ショートショット有り。
UL-94の評価方法に従い、1.6mm厚の難燃試験片の難燃性を評価した。
試験片の成形条件
竪型射出成形機(日精樹脂株式会社製TH40E)を用いて射出成形により、125mm×13mm×1.6mmの難燃性封止樹脂組成物からなる試験片を作製した。射出成形条件は、成形樹脂温度200℃、成形圧力25MPa、冷却時間25秒、射出速度20mm/秒とした。次いでブンゼンバーナーを使用し、高さ2mmの炎を試験片に10秒間、2回接炎させ炎を離した後の燃焼時間の合計を測定した。この操作を5回(n=5)行い、平均を算出した。
評価基準
◎:UL-94 n=5のうち全てV-0
○:UL-94 n=5のうち一部V-0であり、残りはV-1またはV-2である
△:UL-94 n=5のうち全てV-1またはV-2のいずれか
×:UL-94 n=5のうち一部規格外(規格外が1個以上あり)
<結晶性ポリエステル樹脂(A-1)の製造例>
撹拌機、温度計、溜出用冷却器を装備した反応缶内に2,6-ナフタレンジカルボン酸176重量部、1,4-ブタンジオール137重量部、1,4-シクロヘキサンジメタノール69重量部、テトラブチルチタネート0.1重量部を加え、170~220℃で2時間エステル化反応を行った。その後、ダイマー酸46重量部を加え、200~230℃で2時間エステル化反応を行った。エステル化終了後、255℃まで昇温する一方、系内をゆっくり減圧にしてゆき、60分かけて255℃で665Paとした。そしてさらに133Pa以下で30分間重縮合反応を行い、結晶性ポリエステル樹脂(A-1)を得た。この結晶性ポリエステル樹脂(A-1)の還元粘度、酸価、融点、数平均分子量、ガラス転移温度および溶融粘度、成型性評価結果を表1に示した。
<結晶性ポリエステル樹脂(A-2~A-12)の製造例>
結晶性ポリエステル樹脂(A-2~A-12)を実施例1と同様な方法により合成した。ただし、原料の種類と配合比率は表1に記載したとおりに変更した。
<結晶性ポリエステル樹脂(A-13~A-21)の製造例>
結晶性ポリエステル樹脂(A-13~A-21)を実施例1と同様な方法により合成した。それぞれの組成及び物性値、成型性評価結果を表1に示した。
PTMG1000:ポリテトラメチレンエーテルグリコール(数平均分子量1000)、PTMG2000:ポリテトラメチレンエーテルグリコール(数平均分子量2000)
表2、3に記載の割合で、結晶性ポリエステル樹脂(A)と難燃剤(B)を、二軸押し出し機を用いてダイ温度160℃~200℃において溶融混練することによって、難燃性封止樹脂組成物を得た。別記した方法により、難燃性封止樹脂組成物の流動性、燃焼性を評価した。評価結果は以下の表2、3の通りである。
また、本発明の結晶性ポリエステル樹脂を用いた難燃性封止樹脂組成物は、電気電子部品等を封止した時の溶融粘度が低く、難燃性に優れている事から、電気電子部品封止用樹脂組成物として有用である。また、本発明の難燃性封止樹脂組成物は、特に難燃性に優れている事から電気電子部品からの漏電や過電流に対して着火、延焼が抑制され、非常に有用である。本発明の難燃性封止樹脂組成物で封止した電気電子部品封止体は、例えば自動車、通信、コンピュータ、家電用途各種のコネクター、ハーネスやあるいは電子部品、プリント基板を有するスイッチ、センサーのモールド成型品として有用である。
Claims (7)
- 多価カルボン酸成分と多価アルコール成分を共重合成分とする結晶性ポリエステル樹脂(A)であって、結晶性ポリエステル樹脂(A)の全多価カルボン酸成分を100モル%としたとき、2,6-ナフタレンジカルボン酸成分の共重合比率が40~100モル%であり、多価アルコール成分として1,4-ブタンジオール成分が共重合されており、全多価アルコール成分を100モル%としたとき、1,4-ブタンジオール成分の共重合比率が40モル%以下であることを特徴とする結晶性ポリエステル樹脂(A)。
- 結晶性ポリエステル樹脂(A)の全多価アルコール成分を100モル%としたとき、1,4-シクロヘキサンジメタノール成分の共重合比率が60モル%以上であることを特徴とする請求項1に記載の結晶性ポリエステル樹脂(A)。
- 数平均分子量が5,000~50,000であり、なおかつ、結晶融点が100℃~180℃であることを特徴とする請求項1または2に記載の結晶性ポリエステル樹脂(A)。
- 請求項1~3のいずれかに記載の結晶性ポリエステル樹脂(A)および難燃剤(B)を含有する難燃性封止樹脂組成物。
- 難燃剤(B)がリン酸エステルまたはホスフィン酸金属塩であることを特徴とする請求項4に記載の難燃性封止樹脂組成物。
- 結晶性ポリエステル樹脂(A)の重量分率W(A)と難燃剤(B)の重量分率W(B)の比率W(A)/W(B)が3~20であることを特徴とする請求項4または5に記載の難燃性封止樹脂組成物。
- 難燃性封止樹脂組成物全重量に対する結晶性ポリエステル樹脂(A)のW(A)と難燃剤(B)の重量分率W(B)の和が50~90重量%であることを特徴とする請求項4~6のいずれかに記載の難燃性封止樹脂組成物。
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US16/305,488 US11118007B2 (en) | 2016-09-29 | 2017-09-11 | Crystalline polyester resin and flame-retardant sealing resin composition |
CN201780058709.9A CN109790281B (zh) | 2016-09-29 | 2017-09-11 | 结晶性聚酯树脂以及阻燃性密封树脂组合物 |
EP17855687.4A EP3470451B1 (en) | 2016-09-29 | 2017-09-11 | Crystalline polyester resin and flame-resistant sealing resin composition |
JP2017561017A JP6376298B1 (ja) | 2016-09-29 | 2017-09-11 | 結晶性ポリエステル樹脂および難燃性封止樹脂組成物 |
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Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04255753A (ja) * | 1991-02-08 | 1992-09-10 | Mitsubishi Kasei Corp | ポリエステル樹脂組成物 |
JPH05209044A (ja) * | 1991-09-27 | 1993-08-20 | Nkk Corp | ポリエステル共重合体 |
JPH06287285A (ja) * | 1993-04-02 | 1994-10-11 | Nkk Corp | ポリエステルエーテル共重合体 |
JPH06301148A (ja) * | 1993-04-12 | 1994-10-28 | Teijin Ltd | 写真感光材料用フィルム |
JP2003253086A (ja) * | 2002-02-28 | 2003-09-10 | Showa Highpolymer Co Ltd | 高熱伝導性組成物およびその成形品 |
JP2012067176A (ja) | 2010-09-22 | 2012-04-05 | Daicel-Evonik Ltd | 粉末状封止剤及び封止方法 |
WO2012124435A1 (ja) * | 2011-03-17 | 2012-09-20 | 東洋紡績株式会社 | 電気・電子部品封止材用ポリエステル樹脂組成物、封止体およびその製造方法 |
JP2012246375A (ja) | 2011-05-26 | 2012-12-13 | Yasuhara Chemical Co Ltd | ホットメルト接着剤組成物 |
WO2014034474A1 (ja) * | 2012-08-29 | 2014-03-06 | 東洋紡株式会社 | 電気電子部品封止用樹脂組成物、電気電子部品封止体の製造方法および電気電子部品封止体 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100299840A1 (en) | 2007-05-14 | 2010-12-02 | Koninklijke Philips Electronics N.V. | Weight and/or movement sensing in a bed |
JP6287285B2 (ja) | 2014-02-05 | 2018-03-07 | 東洋インキScホールディングス株式会社 | 粘着剤および粘着シート |
-
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Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04255753A (ja) * | 1991-02-08 | 1992-09-10 | Mitsubishi Kasei Corp | ポリエステル樹脂組成物 |
JPH05209044A (ja) * | 1991-09-27 | 1993-08-20 | Nkk Corp | ポリエステル共重合体 |
JPH06287285A (ja) * | 1993-04-02 | 1994-10-11 | Nkk Corp | ポリエステルエーテル共重合体 |
JPH06301148A (ja) * | 1993-04-12 | 1994-10-28 | Teijin Ltd | 写真感光材料用フィルム |
JP2003253086A (ja) * | 2002-02-28 | 2003-09-10 | Showa Highpolymer Co Ltd | 高熱伝導性組成物およびその成形品 |
JP2012067176A (ja) | 2010-09-22 | 2012-04-05 | Daicel-Evonik Ltd | 粉末状封止剤及び封止方法 |
WO2012124435A1 (ja) * | 2011-03-17 | 2012-09-20 | 東洋紡績株式会社 | 電気・電子部品封止材用ポリエステル樹脂組成物、封止体およびその製造方法 |
JP2012246375A (ja) | 2011-05-26 | 2012-12-13 | Yasuhara Chemical Co Ltd | ホットメルト接着剤組成物 |
WO2014034474A1 (ja) * | 2012-08-29 | 2014-03-06 | 東洋紡株式会社 | 電気電子部品封止用樹脂組成物、電気電子部品封止体の製造方法および電気電子部品封止体 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3470451A4 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022210081A1 (ja) * | 2021-03-30 | 2022-10-06 | 株式会社ベルポリエステルプロダクツ | ポリエステル樹脂 |
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US11118007B2 (en) | 2021-09-14 |
EP3470451A4 (en) | 2020-01-01 |
US20200325272A1 (en) | 2020-10-15 |
CN109790281B (zh) | 2021-07-16 |
EP3470451A1 (en) | 2019-04-17 |
EP3470451B1 (en) | 2023-03-08 |
TW201817765A (zh) | 2018-05-16 |
CN109790281A (zh) | 2019-05-21 |
JP6376298B1 (ja) | 2018-08-22 |
KR102401714B1 (ko) | 2022-05-26 |
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