WO2016163462A1 - ポリアリレート樹脂のワニス - Google Patents
ポリアリレート樹脂のワニス Download PDFInfo
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- WO2016163462A1 WO2016163462A1 PCT/JP2016/061407 JP2016061407W WO2016163462A1 WO 2016163462 A1 WO2016163462 A1 WO 2016163462A1 JP 2016061407 W JP2016061407 W JP 2016061407W WO 2016163462 A1 WO2016163462 A1 WO 2016163462A1
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- varnish
- solvent
- polyarylate resin
- mass
- varnish according
- Prior art date
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- 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
- C08G63/19—Hydroxy compounds containing aromatic rings
- C08G63/193—Hydroxy compounds containing aromatic rings containing two or more aromatic rings
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
- C09D167/03—Polyesters derived from dicarboxylic acids and dihydroxy compounds the dicarboxylic acids and dihydroxy compounds having the carboxyl - and the hydroxy groups directly linked to aromatic rings
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
Definitions
- the present invention relates to a varnish of polyarylate resin.
- Polyarylate resins are widely used in the electrical and electronic fields because they are excellent in heat resistance, mechanical strength, dimensional stability, and transparency.
- polyarylate resin has been mainly used in applications such as extrusion molding and injection molding.
- it has come to be used as a varnish for forming a film or a film.
- polyarylate resin since polyarylate resin generally has low solubility, in order to obtain its varnish, it is dissolved in a halogenated organic solvent. However, it is desired to replace the halogen-based organic solvent with a non-halogen-based organic solvent because of concern about the influence on the environment.
- Patent Document 1 discloses a varnish obtained by dissolving a polyarylate resin composed of bisphenol A, terephthalic acid, isophthalic acid and orthophthalic acid in a non-halogen organic solvent.
- An object of the present invention is to provide a varnish in which a highly heat-resistant polyarylate resin is dissolved in a non-halogenated solvent.
- Another object of the present invention is to provide a varnish in which a highly heat-resistant polyarylate resin is dissolved in a non-halogenated solvent at a high concentration of 20% by mass or more, particularly 30% by mass or more.
- the present inventors have found that the above object can be achieved by using a polyarylate resin having a specific resin composition, and have reached the present invention.
- the gist of the present invention is as follows.
- a varnish comprising a diarylic phenol component and an aromatic dicarboxylic acid component, and a polyarylate resin represented by the following formula (1) dissolved in a non-halogenated solvent.
- l / m 50/50 to 65/35 (molar ratio)
- the varnish according to [1] wherein the l / m is 55/45 to 65/35.
- the non-halogenated solvent is at least one solvent selected from the group consisting of aromatic hydrocarbons, ether compounds, and ketone compounds.
- the non-halogenated solvent is one or more solvents selected from the group consisting of aromatic hydrocarbons, cyclic ether compounds, acyclic ether compounds, cyclic ketone compounds, and acyclic ketone compounds.
- the present invention it is possible to provide a varnish in which a highly heat-resistant polyarylate resin is dissolved in a non-halogenated solvent at a high concentration.
- the varnish of the present invention is also excellent in solution stability.
- the coating film and film obtained from the varnish of the present invention are excellent in heat resistance and can be suitably used in the electric and electronic fields.
- the polyarylate resin used in the varnish of the present invention is composed of a dihydric phenol component and an aromatic dicarboxylic acid component.
- the dihydric phenol component is a compound containing at least one aromatic ring and two hydroxyl groups in one molecule, and 2,2-bis (4-hydroxyphenyl) propane (bisphenol A, BPA) and 1,1 -Consists of bis (4-hydroxyphenyl) -3,3,5-trimethylcyclohexane (BPTMC).
- BPA 2,2-bis (4-hydroxyphenyl) propane
- BPTMC 1,1 -Consists of bis (4-hydroxyphenyl) -3,3,5-trimethylcyclohexane
- the aromatic dicarboxylic acid component is a compound containing at least one aromatic ring and two carboxyl groups in one molecule, and is composed of terephthalic acid (TPA) and isophthalic acid (IPA).
- the polyarylate resin is specifically represented by the following formula (1).
- the sum of l and m is 100 mol%. 1 / m, that is, the molar ratio of BPA to BPTMC (BPA / BPTMC) needs to be 50/50 to 65/35, particularly more than 50/50 and not more than 65/35.
- the molar ratio of BPA and BPTMC is 55 from the viewpoint of further improving the solubility in a non-halogenated solvent (particularly, a mixed solvent of an aromatic hydrocarbon and an acyclic ketone compound) and solution stability at a higher concentration. / 45 to 65/35 is preferable.
- both of them are non-halogenated solvents (for example, toluene or toluene and 2 -Since the solubility of butanone in a mixed solvent) and the solution stability are lowered, it is not preferable.
- the molar ratio of TPA to IPA is preferably 10/90 to 90/10, and more preferably 30/70 to 70/30.
- the molar ratio of TPA to IPA is higher than that of a non-halogenated solvent (in particular, aromatic hydrocarbon, cyclic ether compound, cyclic ketone compound, acyclic ketone compound, or a mixed solvent thereof (hereinafter simply referred to as “ From the viewpoint of further improving the solubility in an aromatic hydrocarbon and the like and the stability of the solution, it is more preferably 35/65 to 65/35, particularly 40/60 to 60/40.
- non-halogenated solvents for example, toluene or a mixture of toluene and 2-butanone
- the polyarylate resin used in the varnish of the present invention may contain diol components other than BPA and BPTMC as long as the effects of the present invention are not impaired.
- diol components include dihydric phenols other than BPA and BPTMC, alicyclic glycols, and aliphatic glycols.
- dihydric phenol include ethylene oxide adduct of bisphenol A, propylene oxide adduct of bisphenol A, bisphenol S, ethylene oxide adduct of bisphenol S, bisphenol Z, ethylene oxide adduct of bisphenol Z, hydroquinone, resorcinol , Catechol and the like.
- the alicyclic glycol include cyclohexanedimethanol.
- Examples of the aliphatic glycol include ethylene glycol, propylene glycol, butanediol, pentanediol, hexanediol, nonanediol, and decanediol.
- the polyarylate resin used in the varnish of the present invention may contain a dicarboxylic acid component other than TPA and IPA as long as the effects of the present invention are not impaired.
- a dicarboxylic acid component include aromatic dicarboxylic acids other than TPA and IPA, alicyclic dicarboxylic acids, and aliphatic dicarboxylic acids.
- aromatic dicarboxylic acid include orthophthalic acid and naphthalenedicarboxylic acid.
- Examples of the alicyclic dicarboxylic acid include dicarboxymethylcyclohexane and cyclohexanedicarboxylic acid.
- the aliphatic dicarboxylic acid include adipic acid, sebacic acid, glutaric acid, and dodecanedioic acid.
- Examples of the method for producing the polyarylate resin include an interfacial polymerization method and a solution polymerization method. Since the interfacial polymerization method is faster than the solution polymerization method, hydrolysis of the acid halide can be suppressed, and as a result, a high molecular weight polymer can be obtained.
- a solution obtained by dissolving a halide of a dicarboxylic acid component in an organic solvent incompatible with water (organic phase) is mixed with an aqueous alkaline solution (water) containing a diol component, a terminal blocking agent, an antioxidant, and a polymerization catalyst. And a polymerization reaction is performed while stirring at a temperature of 50 ° C. or lower for 1 to 8 hours.
- the solvent used in the organic phase is preferably a solvent that is incompatible with water and dissolves the polyarylate resin.
- the solvent include methylene chloride and chloroform. Methylene chloride is preferred because it is easy to use in production.
- the glass transition temperature of the polyarylate resin is preferably 200 to 250 ° C, and more preferably 210 to 240 ° C.
- the inherent viscosity at 25 ° C. of a resin solution obtained by dissolving a polyarylate resin in 1,1,2,2-tetrachloroethane to a concentration of 1 g / dL is 0.40 to 1.20 dL / g. It is preferably 0.45 to 1.00 dL / g.
- Inherent viscosity is a measure of molecular weight. When the inherent viscosity is less than 0.40 dL / g, the obtained coating film and film may have poor mechanical strength. When the inherent viscosity exceeds 1.20 dL / g, the viscosity of the varnish increases and the workability may deteriorate.
- the inherent viscosity of the polyarylate resin can be adjusted by the following method. (1) The reaction rate is controlled by adjusting the polymerization time; (2) the polymerization is carried out with a slightly excessive blending ratio of either aromatic dicarboxylic acid or dihydric phenol monomer; (3) monoalcohol Monophenol and / or monocarboxylic acid are used as end-capping agents. Among these, it is more preferable to use the method (3).
- Examples of the endblocker include monoalcohols such as methanol, ethanol, n-propanol, isopropanol, n-butanol, 2-butanol, pentanol, hexanol, dodecyl alcohol, stearyl alcohol, benzyl alcohol, and phenethyl alcohol; phenol, Monophenols such as cresol, 2,6-xylenol, 2,4-xylenol, p-tert-butylphenol, cumylphenol; benzoic acid, methylbenzoic acid, naphthoic acid, acetic acid, propionic acid, butyric acid, oleic acid, stearic acid Monocarboxylic acids such as; and derivatives thereof.
- monoalcohols such as methanol, ethanol, n-propanol, isopropanol, n-butanol, 2-butanol, pentanol, hexanol
- the varnish of the present invention is composed of a polyarylate resin and an organic solvent.
- the organic solvent used in the varnish of the present invention is a non-halogenated solvent, and is preferably a non-halogenated solvent having a boiling point of 160 ° C. or less, particularly 120 ° C. or less from the viewpoint of film formation.
- the non-halogenated solvent includes, for example, an aromatic hydrocarbon, an ether compound, and a ketone compound, and may be one or more solvents selected from these groups.
- aromatic hydrocarbons examples include toluene (boiling point 110 ° C.), xylene (144 ° C.), and the like.
- the ether compound includes a cyclic ether compound and an acyclic ether compound.
- the cyclic ether compound include tetrahydrofuran (boiling point 66 ° C.), 1,3-dioxane (boiling point 105 ° C.), 1,4-dioxane (boiling point 101 ° C.), 1,3-dioxolane (boiling point 75 ° C.), and the like. It is done.
- Preferred cyclic ether compounds are tetrahydrofuran, 1,4-dioxane, 1,3-dioxolane.
- the acyclic ether compound include propylene glycol monomethyl ether (boiling point 121 ° C.).
- the ketone compound includes a cyclic ketone compound and an acyclic ketone compound.
- the cyclic ketone compound include cyclohexanone (boiling point 156 ° C.).
- a preferred cyclic ketone is cyclohexanone.
- the acyclic ketone compound include 2-butanone (boiling point 80 ° C.).
- a preferred acyclic ketone compound is 2-butanone.
- the non-halogenated solvent is preferably an aromatic hydrocarbon (particularly toluene) from the viewpoints of solubility and solution stability.
- the non-halogenated solvent is selected from the group consisting of aromatic hydrocarbons (particularly toluene), ether compounds and ketone compounds from the viewpoints of improving safety to human bodies and the environment, and further improving solubility and solution stability. It is preferable to use a mixed solvent with one or more kinds of non-aromatic hydrocarbons (particularly ketone compounds, preferably acyclic ketone compounds, more preferably 2-butanone). In the mixed solvent, the mixing ratio of aromatic hydrocarbon to non-aromatic hydrocarbon (for example, toluene / 2-butanone) improves the safety to human body and environment, and further improves the solubility and solution stability.
- the ratio is preferably 10/90 to 90/10 (mass ratio), more preferably 20/80 to 80/20 (mass ratio), and 80/20 to 50/50 (mass ratio). More preferably, the ratio is most preferably 65/35 to 50/50 (mass ratio).
- the polyarylate resin can be dissolved in the non-halogenated solvent even if the solid content concentration (particularly the polyarylate resin concentration) of the varnish is set to be relatively high.
- the solid content concentration of the varnish can be, for example, 20% by mass or more, particularly 25% by mass or more, and preferably 30% by mass or more or 35% by mass from the viewpoint of handling the polyarylate resin during film formation and film formation. % Or more, more preferably 40% by mass or more or 45% by mass or more, still more preferably 50% by mass or more, and most preferably 60% by mass or more.
- the upper limit of the solid content concentration of the varnish is usually 80% by mass, particularly 70% by mass.
- the solid content concentration of the varnish is usually 20 to 80% by mass when an aromatic hydrocarbon, a cyclic ether compound, a cyclic ketone compound or a mixed solvent thereof is used as the non-halogenated solvent, for example. Yes, preferably 30 to 80% by mass, more preferably 40 to 70% by mass, and still more preferably 45 to 70% by mass.
- the solid content concentration of the varnish is usually 15 to 70% by mass, preferably 15 to 50% by mass. More preferably, it is 15 to 40% by mass, and further preferably 15 to 25% by mass.
- Non-halogenated solvents for example, aromatic hydrocarbons and acyclic ketone compounds, particularly toluene and 2-butanone
- a solvent for the varnish of the present invention are widely used in the electrical and electronic field, are easily available, and Since it is inexpensive, it is an organic solvent that is particularly convenient.
- polyarylate resins have been thought to be difficult to dissolve in the non-halogenated solvent (particularly, a mixed solvent of an aromatic hydrocarbon and an acyclic ketone compound) because of the high concentration of aromatic rings.
- the polyarylate resin has a specific resin composition, it is soluble in the non-halogenated solvent at a high concentration. Since the varnish of the present invention has a high solid content concentration and high solution stability, it is very easy to handle in film formation and film formation, and its industrial significance is very high.
- the varnish of the present invention can be produced by a known method.
- it can be produced by mixing polyarylate resin particles with an organic solvent, and stirring and dissolving as necessary.
- a method for dissolving the polyarylate resin in the organic solvent for example, in a state where the polyarylate resin is maintained at a constant temperature, a predetermined amount of the organic solvent and the polyarylate resin are put in a container to form a mixed solution, and the mixed solution is stirred by a stirrer, Or the method of sealing and shaking a container is mentioned.
- the time required from the start of dissolution until the entire amount is dissolved is affected not only by the solubility of the polyarylate resin but also by the dissolution method.
- the dissolution conditions are such that the entire amount can be dissolved preferably within 24 hours, more preferably within 5 hours. At this time, depending on the size and fine structure of the polyarylate resin particles, dissolution may take time. In such a case, the workability can be further improved by pulverizing the polyarylate resin so as to have an average particle size of 100 ⁇ m or less and then dissolving it by the dissolution method.
- an additive such as an antioxidant, a flame retardant, an ultraviolet absorber, a fluidity modifier, a fine particle inorganic filler, a pigment and a dye, and / or Other resins than the arylate resin may be used.
- the antioxidant include hindered phenol-based antioxidants, hindered amine-based antioxidants, thioether-based antioxidants, and phosphorus-based antioxidants.
- the other resin include polycarbonate, polystyrene, polyester, acrylic resin, polyphenylene ether, polysulfone, polyethersulfone, and polyetherimide.
- the varnish of the present invention can be used by the following method: (1) A coating is formed on a substrate such as a resin or metal by applying and drying a varnish; (2) The film is peeled off after forming the film; (3) After applying the varnish and before evaporating the solvent, use a base material such as another resin or metal on the coating surface as an adhesive; or (4) impregnating the varnish with the fibrous reinforcing material and then using the solvent. Evaporate to form a composite material such as a prepreg.
- the method for drying the varnish of the present invention is not particularly limited, but it is preferable to dry by heating in order to efficiently remove the solvent.
- the drying temperature and drying time are appropriately selected depending on the physical properties of the polyarylate resin and the combination of the coated substrates. In consideration of economy, the drying temperature is preferably 40 to 150 ° C., more preferably 40 to 100 ° C.
- the drying time is preferably 1 to 30 minutes, more preferably 3 to 15 minutes. In addition, you may dry naturally at room temperature as needed.
- the coating film and film obtained from the varnish of the present invention have high heat resistance, they can be suitably used in the electric / electronic field. Specific applications include, for example, display panels, wiring board substrates, and insulating layers.
- varnishes were prepared so as to have respective concentrations of 10, 20, and 30% by mass.
- ⁇ Transparent.
- ⁇ There was no insoluble matter, but it was cloudy (no problem in practical use).
- X There was insoluble matter.
- Example 1 In a 100 L internal reaction vessel equipped with a water cooling jacket and a stirrer, 685 g of 2,2-bis (4-hydroxyphenyl) propane (BPA), 1,1-bis (4-hydroxyphenyl) -3,3 , 5-trimethylcyclohexane (BPTMC) 930 g, p-tert-butylphenol (PTBP) 45 g as an end-capping agent and sodium hydroxide 850 g as an alkali were charged and dissolved in 30 L of water (aqueous phase). Separately, 625 g of terephthalic acid chloride (TPC) and 625 g of isophthalic acid chloride (IPC) were dissolved in 18 L of methylene chloride (organic phase).
- BPA 2,2-bis (4-hydroxyphenyl) propane
- BPTMC 1,1-bis (4-hydroxyphenyl) -3,3
- PTBP p-tert-butylphenol
- Examples 2 to 6 and Comparative Examples 1 to 4 Except having changed the ratio of the raw material to be used like Table 1, operation similar to Example 1 was performed and the powdery polyarylate resin was produced.
- TPA terephthalic acid IPA; isophthalic acid
- BPA 2,2-bis (4-hydroxyphenyl) propane
- BPTMC 1,1-bis (4-hydroxyphenyl) -3,3,5-trimethylcyclohexane
- BPZ 1,1- Bis (4-hydroxyphenyl) cyclohexane
- Example 1 to 6 since a polyarylate resin having a specific resin composition specified in the present invention was used, when toluene, tetrahydrofuran, 1,4-dioxane, 1,3-dioxolane, or cyclohexanone was used as a solvent, A varnish having a partial concentration of 30% by mass or more, particularly 40% by mass or more could be obtained. Moreover, the varnish was excellent in solution stability. When a film was formed on a polyester film (thickness 75 ⁇ m) using the varnish having the highest solid content for each of the solvents in Examples 1 to 6, a uniform and transparent film (about 10 ⁇ m) was formed. I was able to.
- Comparative Examples 1 and 2 used a polyarylate resin in which the molar ratio of BPA and BPTMC was not within the range specified in the present invention, when toluene was used as a solvent, a varnish having a solid content concentration of 30% by mass or more was obtained. I could not.
- Comparative Example 3 since a polyarylate resin having a resin composition different from that defined in the present invention was used, a varnish could not be obtained when toluene was used as a solvent.
- the varnish of the present invention is useful for producing a film and a film excellent in heat resistance in the electric and electronic fields.
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Abstract
Description
[1]二価フェノール成分および芳香族ジカルボン酸成分から構成され、下記式(1)で表されるポリアリレート樹脂が非ハロゲン化溶媒に溶解してなるワニス。
[2]前記l/mが55/45~65/35であることを特徴とする[1]に記載のワニス。
[3]固形分濃度が20質量%以上80質量%以下であることを特徴とする[1]または[2]に記載のワニス。
[4]固形分濃度が40質量%以上70質量%以下であることを特徴とする[1]~[3]のいずれかに記載のワニス。
[5]前記非ハロゲン化溶媒が芳香族炭化水素、エーテル化合物、およびケトン化合物からなる群から選択される1種以上の溶媒であることを特徴とする[1]~[4]のいずれかに記載のワニス。
[6]前記非ハロゲン化溶媒が芳香族炭化水素、環式エーテル化合物、非環式エーテル化合物、環式ケトン化合物、および非環式ケトン化合物からなる群から選択される1種以上の溶媒であることを特徴とする[1]~[5]のいずれかに記載のワニス。
[7]前記非ハロゲン化溶媒が芳香族炭化水素とケトン化合物との混合溶媒であることを特徴とする[1]~[6]のいずれかに記載のワニス。
[8][1]~[7]のいずれかに記載のワニスを用いて形成された被膜。
本発明のワニスは、溶液安定性にも優れている。
本発明のワニスから得られた被膜およびフィルムは、耐熱性に優れており、電気電子分野等に好適に用いることができる。
l/m、すなわちBPAとBPTMCのモル比率(BPA/BPTMC)は、50/50~65/35、特に50/50超65/35以下であることが必要である。BPAとBPTMCのモル比率は、より高濃度での非ハロゲン化溶媒(特に芳香族炭化水素と非環式ケトン化合物との混合溶媒)への溶解性および溶液安定性のさらなる向上の観点から、55/45~65/35であることが好ましい。BPAのモル比率が、BPAとBPTMCの合計100モル%に対して50モル%未満である場合、また、65モル%を超える場合、いずれも、非ハロゲン化溶媒(例えば、トルエン、またはトルエンおよび2-ブタノンの混合溶媒)への溶解性および溶液安定性が低下するので好ましくない。
環式エーテル化合物として、例えば、テトラヒドロフラン(沸点66℃)、1,3-ジオキサン(沸点105℃)、1,4-ジオキサン(沸点101℃)、1,3-ジオキソラン(沸点75℃)等が挙げられる。好ましい環式エーテル化合物は、テトラヒドロフラン、1,4-ジオキサン、1,3-ジオキソランである。
非環式エーテル化合物として、例えば、プロピレングリコールモノメチルエーテル(沸点121℃)等が挙げられる。
環式ケトン化合物として、例えば、シクロヘキサノン(沸点156℃)等が挙げられる。好ましい環式ケトンはシクロヘキサノンである。
非環式ケトン化合物として、例えば、2-ブタノン(沸点80℃)等が挙げられる。好ましい非環式ケトン化合物は2-ブタノンである。
(1)ワニスを塗布乾燥することにより樹脂または金属等の基材上に被膜を形成する;
(2)当該被膜形成後剥離しフィルムを形成する;
(3)ワニスを塗布後溶媒を蒸発させる前に塗膜面に他の樹脂または金属等の基材を張り合わせ接着剤として用いる;または
(4)ワニスを繊維状強化材に含浸させたのち溶媒を蒸発させてプリプレグ等の複合材を形成する。
(1)インヘレント粘度(ηinh)
1,1,2,2-テトラクロロエタンを溶媒として、濃度1g/dL、温度25℃の条件で相対粘度(ηrel)を測定した。得られた相対粘度および下記式よりインヘレント粘度を算出した。下記式中、「c」は濃度のことである。
示差走査熱分析装置(パーキンエルマー社製Diamond DSC)を使用し、昇温速度10℃/分で30℃から400℃まで昇温し、得られた昇温曲線中のガラス転移温度に由来する不連続変化の開始温度をガラス転移温度とした。
内容量50mLのガラス製ねじ口瓶に、所定濃度になるよう秤量した樹脂と有機溶媒の合計30gを密封し、ねじ口瓶を23℃の室温でミックスローターを用いて70rpmで24時間回転させた。その後、樹脂溶液(ワニス)を目視観察し、下記基準により評価した。
なお、有機溶媒としては、表2または表3に記載の有機溶媒を用いた。トルエン、テトラヒドロフラン、1,4-ジオキサン、1,3-ジオキソラン、またはシクロヘキサノンについては10、20、30、40、50、60質量%の各濃度になるように樹脂溶液を作製した。トルエンと2-ブタノンの混合溶液については10、20、30質量%の各濃度になるようにワニスを作製した。
〇:透明であった。
△:不溶物はなかったが、白濁していた(実用上問題なし)。
×:不溶物があった。
(3)で溶解性の評価で「○」か「△」の評価であった樹脂溶液について、23℃の室温下48時間静置した後、ワニスを目視観察し、下記基準により評価した。
〇:透明性が維持され、増粘しなかった。
△:白濁するか、増粘したが、流動性を有していた(実用上問題なし)。
×:流動性がなかった。
水冷用ジャケットと攪拌装置を備えた内容積100Lの反応容器中に、2,2-ビス(4-ヒドロキシフェニル)プロパン(BPA)685g、1,1-ビス(4-ヒドロキシフェニル)-3,3,5-トリメチルシクロヘキサン(BPTMC)930g、末端封止剤としてp-tert-ブチルフェノール(PTBP)45g、アルカリとして水酸化ナトリウム850gを仕込み、水30Lに溶解した(水相)。これとは別に、塩化メチレン18Lに、テレフタル酸クロライド(TPC)625gと、イソフタル酸クロライド(IPC)625gを溶解した(有機相)。(BPA:BPTMC:TPC:IPC:PTBP=50:50:50:50:0.3(モル比))。
それぞれの液を20℃になるよう調節した後、前記水相に、重合触媒としてベンジルトリメチルアンモニウムクロライドの50%水溶液を15g添加し、さらに前記塩化メチレン溶液を全量投入し、6時間攪拌を続けた後、攪拌機を停止した。
静置分離後、水相を抜き出し、残った有機相に酢酸20gを添加した。その後、イオン交換水30Lを投入し、20分間攪拌してから再度静置して水相を抜き出した。この水洗操作を水相が中性になるまで繰り返した。その後、有機相を、ホモミキサーを装着した容器に入った50℃の温水中に投入して塩化メチレンを蒸発させた。その後、脱水処理し、真空乾燥機を用いて130℃減圧下24時間乾燥した。次いで、篩機を用いて分級し、平均粒径100μm以下の粉末状のポリアリレート樹脂を得た。
用いる原料の割合を表1のように変更した以外は、実施例1と同様の操作をおこなって、粉末状のポリアリレート樹脂を作製した。
IPA;イソフタル酸
BPA:2,2-ビス(4-ヒドロキシフェニル)プロパン
BPTMC:1,1-ビス(4-ヒドロキシフェニル)-3,3,5-トリメチルシクロヘキサン
BPZ:1,1-ビス(4-ヒドロキシフェニル)シクロヘキサン
実施例1~6のそれぞれの溶媒について固形分濃度が最も高いワニスを用いて、ポリエステルフィルム(厚み75μm)上に被膜を形成させたところ、いずれも均一で透明な被膜(約10μm)を形成することができた。
比較例3は、樹脂組成が本発明で規定するものとは異なるポリアリレート樹脂を用いたため、溶媒としてトルエンを用いた場合に、ワニスを得ることができなかった。
Claims (8)
- 前記l/mが55/45~65/35であることを特徴とする請求項1に記載のワニス。
- 固形分濃度が20質量%以上80質量%以下であることを特徴とする請求項1または2に記載のワニス。
- 固形分濃度が40質量%以上70質量%以下であることを特徴とする請求項1~3のいずれかに記載のワニス。
- 前記非ハロゲン化溶媒が芳香族炭化水素、エーテル化合物、およびケトン化合物からなる群から選択される1種以上の溶媒であることを特徴とする請求項1~4のいずれかに記載のワニス。
- 前記非ハロゲン化溶媒が芳香族炭化水素、環式エーテル化合物、非環式エーテル化合物、環式ケトン化合物、および非環式ケトン化合物からなる群から選択される1種以上の溶媒であることを特徴とする請求項1~5のいずれかに記載のワニス。
- 前記非ハロゲン化溶媒が芳香族炭化水素とケトン化合物との混合溶媒であることを特徴とする請求項1~6のいずれかに記載のワニス。
- 請求項1~7のいずれかに記載のワニスを用いて形成された被膜。
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JP2009167291A (ja) * | 2008-01-16 | 2009-07-30 | Unitika Ltd | ポリアリレートおよびその製造方法 |
JP2014189605A (ja) * | 2013-03-26 | 2014-10-06 | Unitika Ltd | ポリアリレート樹脂フィルムおよびそれを用いたコンデンサ |
JP2015067813A (ja) * | 2013-09-30 | 2015-04-13 | ユニチカ株式会社 | プリプレグおよびその製造方法 |
JP2015174908A (ja) * | 2014-03-14 | 2015-10-05 | ユニチカ株式会社 | ワニスおよびその製造方法 |
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JP2015530460A (ja) * | 2012-09-27 | 2015-10-15 | ティコナ・エルエルシー | サーモトロピック液晶粉末 |
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JPH02233720A (ja) * | 1989-02-02 | 1990-09-17 | Bayer Ag | 1,1‐ビス‐(4‐ヒドロキシフェニル)‐アルキルシクロアルカンを基にしたポリエステル及びポリエステルカーボネート |
JP2009167291A (ja) * | 2008-01-16 | 2009-07-30 | Unitika Ltd | ポリアリレートおよびその製造方法 |
JP2014189605A (ja) * | 2013-03-26 | 2014-10-06 | Unitika Ltd | ポリアリレート樹脂フィルムおよびそれを用いたコンデンサ |
JP2015067813A (ja) * | 2013-09-30 | 2015-04-13 | ユニチカ株式会社 | プリプレグおよびその製造方法 |
JP2015174908A (ja) * | 2014-03-14 | 2015-10-05 | ユニチカ株式会社 | ワニスおよびその製造方法 |
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WO2018020981A1 (ja) * | 2016-07-28 | 2018-02-01 | Jsr株式会社 | 重合体、組成物、成形体、硬化物及び積層体 |
JPWO2018020981A1 (ja) * | 2016-07-28 | 2019-05-09 | Jsr株式会社 | 重合体、組成物、成形体、硬化物及び積層体 |
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