JPH01259060A - Solvent-resistant resin composition - Google Patents

Abstract

PURPOSE:To obtain a solvent-resistant resin composition, consisting of a specific modified polyphenylene ether and modified polyphenylene sulfide, good in compatibility and excellent in solvent resistance, mechanical properties and moldability. CONSTITUTION:A solvent-resistant resin composition consisting of (A) 5-95wt.% modified polyphenylene ether obtained by modifying a polyphenylene ether, preferably poly(2,6-dimethyl-1,4-phenylene) ether, etc., with a modifying agent (preferably maleic anhydride, glycidyl acrylate, etc.) simultaneously having (A1) ethylenically unsaturated bond and (A2) functional groups selected from COOH, acid anhydride groups, OH and epoxy groups in the presence (absence) of a radical initiator and (B) 95-5wt.% modified polyphenylene sulfide prepared by modifying a polyphenylene sulfide containing >=70mol%, preferably 90mol% units expressed by the formula with a modifying agent similar to that in the component (A).

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention particularly relates to a resin composition having excellent solvent resistance, mechanical properties, and moldability.

[Conventional technology]

Polyphenylene ether is a resin with excellent heat resistance, rigidity, electrical properties, etc., and is a polymeric material useful as an engineering plastic. However, it is well known that polyphenylene ether has major drawbacks such as poor solvent resistance and poor moldability.

On the other hand, polyphenylene sulfide is known as a resin with excellent heat resistance, solvent resistance, electrical properties, mechanical strength, dimensional stability, flame retardance, etc., and has attracted attention in recent years. In particular, polyphenylene sulfide can improve the above performance by combining it with hand-cut reinforcement materials such as glass fiber and carbon fiber, and inorganic fillers such as talc, clay, and silica. Used for structural parts, etc. However, polyphenylene sulfide has drawbacks such as a low degree of polymerization, difficulty in molding, lack of toughness and brittleness, and glass fiber-reinforced polyphenylene sulfide tends to warp in molded products.

As a technique for improving the molding processability of polyphenylene ether, for example, Japanese Patent Publication No. 56-34032 discloses a method of friending polyphenylene V sulfide. However, although the effect of improving moldability was observed, the compatibility between polyphenylene ether and polyphenylene sulfide was poor, resulting in problems such as poor appearance and deterioration of mechanical properties.

Further, as a technique for improving the compatibility between polyphenylene ether and polyphenylene sulfide, interposition of an epoxy resin is disclosed in Japanese Patent Publication No. 11063/1983. However, although the compatibility was improved to some extent, it was not sufficient, and the mechanical properties, solvent resistance, etc. were also unsatisfactory.

[Problems to be solved by the present invention]

The problem to be solved by the present invention is that when polyphenylene ether and polyphenylene sulfide are bonded, the mechanical properties, solvent resistance, heat resistance properties, etc. of the material deteriorate due to the inherent poor compatibility between the two. The purpose is to prevent it.

Solvent resistance, which is not found in conventional technology, has been achieved by solving this problem.
It becomes possible to create materials with excellent mechanical performance, heat resistance, and moldability.

[Means for solving problems]

That is, the present invention provides polyphenylene ether from an organic compound having in its molecule at the same time (aJ ethylenic double bond and G) 1 a functional group selected from the group consisting of a carboxyl group, an acid anhydride group, a hydroxyl group, and an epoxy group. A modified polyphenylene ether obtained by modifying with a selected modifier in the presence or absence of a radical initiator, (2) polyphenylene sulfide containing fa) an ethylenic double bond, and (b) a carboxyl group in the molecule. , a novel solvent-resistant resin composition consisting of modified polyphenylene sulfide obtained by modification with a modifier selected from organic compounds that simultaneously have a functional group selected from the group consisting of an acid anhydride group, a hydroxyl group, and an epoxy group. .

The polyphenylene ether used in the resin composition of the present invention is a polyphenylene ether obtained by polycondensing one or more monocyclic phenols represented by the general formula (I); The lower alkyl groups R2 and R3 of ~3 are hydrogen atoms or lower furkyl groups having 1 to 3 carbon atoms, and a lower alkyl substituent must always be present at the ortho position of at least one of the hydroxyl groups.

The present invention includes a graft copolymer having a polyphenylene ether as a base obtained by grafting a vinyl aromatic compound onto a vinyl ether. This polyphenylene ether may be a homopolymer or a copolymer.

Examples of the monocyclic phenol represented by the general formula (I) include 2,6-diethylphenol, 2.6-diethylphenol, 2.6-dipropylphenol, 2-
Methyl-6-ethylphenol, 2-methyl-6-propylphenol, 2-ethyl-6-propylphenol, m-diVsol, 2,3-dimethylphenol, 2゜3-diethylphenol, 2,3-dimethylphenol Propylphenol, 2-methyl-3-ethylphenol, -2-methyl-3-propylphenol, 2-ethyl-3-methylphenol, 2-ethyl-3-propylphenol, 2-
Propyl-3-methylphenol, 2-propyl-3-
Ethylphenol, 2,3.6-)diethylphenol, 2,3.6-)diethylphenol, 213.6-)
Dipropylphenol, 2,6-dimethyl-3-ethyl-phenol, 2,6-dimethyl-3-propylphenol and the like can be mentioned. Examples of polyphenylene ether obtained by polycondensation of one or more of these phenols include poly(2,6-cymethyl-1,4-
phenylene) ether, poly(2,6-ethyl-1.
4-)2-2-2-2-2-2-2-phenylene) ether, (2,6-')furopy-1,4-phenylene) ether, poly(2-methyl-6-ethyl-1,4-phenylene) ether, poly(2-methyl-6-ethyl-1,4-phenylene) ether, poly(2-methyl-6-ethyl-1,4-phenylene) ether, -methyl-6-broby-1,4-7enylene)
Ether, poly(2-ethyl-6-furopyru-1.4-
phenylene) ether, 2,6-dimethylphenol/
2,3.6-) Limethylphenol copolymer, 2.6-
Dimethylphenol/2,3.6-)! j Ethylphenol copolymer, 2,6-dimethylphenol/2,3
, 6-dromethylphenol copolymer, 2,6-dipylphenol/2,3,6-dromethylphenol copolymer, po! + (2,6-dimethyl-1°4-phenylene) ether graft copolymer obtained by craft polymerization of styrene, 2,6-dimethylphenol/2,3.
6-) A graft copolymer obtained by graft-polymerizing ethylene onto a trimethylphenol copolymer may be mentioned. In particular, poly(2,6-dimethyl-1,4-phenylene)ether, 2,6-dimethylphenol/2,3.

6-Dromethylphenol copolymer and the like are preferred as the polyphenylene ether used in the present invention.

The polyphenylene sulfide of the present invention is a polymer containing 70 mol % or more, more preferably 90 mol % or more of -, and if the repeating unit is less than 70 mol %, it is difficult to obtain a composition having specific properties. Various known polymerization methods can be used to obtain this polymer, but sodium sulfide and p-dichlorobenzene may be mixed in an amide solvent such as N-methifreviridone or dimethylacetamide, or a sulfone solvent such as sulfolane. A method of reacting in a solvent is preferred. To adjust the degree of polymerization at this time, sodium acetate,
This is a preferred method for adding alkali metal carboxylates such as lithium acetate. Although it may contain less than 30 mol % as a copolymer component and affect the crystallinity of the polymer, preferably the copolymer component contains 10 mol 9C.
Less than is better.

Next, the "modifier" of polyphenylene ether and borine divinyl sulfide has an (al-ethyl-vinyl double bond) in the molecule, and (b) a group consisting of a carboxyl group, an acid anhydride group, a hydroxyl group, and an epoxy group. An organic compound simultaneously having a selected functional group Thea'), specifically maleic acid,
α, β-unsaturated dicarboxylic acids exemplified by fumaric acid, chloromaleic acid, citraconic acid, itafonic acid, etc.; exemplified by acrylic acid, puranic acid, crotonic acid, vinyl acetic acid, methacrylic acid, pentenoic acid, angelic acid, etc. unsaturated monocarboxylic acids; acid anhydrides of these α, β-unsaturated dicarboxylic acids and unsaturated monocarboxylic acids; 1 mol of the above α, β-unsaturated dicarboxylic acids and ethylene glycol, boupylene glycol, trimethylene glycol , butane-1
, 4-diol, tetramethinone glycol, pentaethylene glycol, and human-quinone, resorcinol, catechol, m-cocolylene diol, p-cocolylene diol, 4,4'-di-diol, etc. Dihydroxy-α having a structure derived from 2 moles of aromatic diols such as roxybiphenyl, 4,4'-dihydroxybiphenyl ether, bisphenol A1 bisphenol S1 bisphenol F.

β-unsaturated dicarboxylic acid diester; hydroxy-α,β-unsaturated dicarboxylic acid ester having a structure derived from 1 mole of α,β-unsaturated dicarboxylic acid and 1 mole of an aliphatic diol or an aromatic dihydroxy compound; (
! , hydroxy esters having a structure derived from β-unsaturated dicarboxylic acid and an aliphatic polyhydric alcohol such as glycerol or pentaerythritol or an aromatic polyhydric phenol such as pyrogallol; 1 mole of the aforementioned unsaturated monocarboxylic acid and Hydroxy unsaturated monocarboxylic acid esters having a structure derived from 1 mol of the above-mentioned aliphatic diol or aromatic dihydroxy compound; Hydroxy polyunsaturated monocarboxylic acid varnishes and chills having a structure; glycidyl maleate; Examples include unsaturated epoxy compounds such as glycidyl 7-acrylate and glycidyl methacrylate.

Among these, preferred are maleic acid, acrylic acid, methacrylic acid, maleic anhydride, (X, the aforementioned esters derived from β-unsaturated dicarboxylic acids and aliphatic diols or aromatic dihydroxy compounds), and the aforementioned esters derived from unsaturated carboxylic acids and aliphatic diols or aromatic dihydroxy compounds, glycidyl acrylate or glycidyl methacrylate;
More preferred are maleic anhydride, hydroxy unsaturated monocarboxylic acid esters having structures derived from unsaturated monocarboxylic acids and aliphatic diols or aromatic dihydroxy compounds, glycidyl heptaacrylate or glycidyl methacrylate.

The preparation of modified polyphenylene ether used in the present invention is as follows:
The following method is used, but the method is not particularly limited thereto. For example, modified polyphenylene ether can be prepared by using the polyphenylene nitrate modifier and a Worol mill, Banbury mixer 1 extruder, etc.
It may be prepared by melt-kneading and reacting at a temperature of 350°C, or it may be prepared by heating and reacting polyphenylene ether and a modifier in a solvent such as benzene, toluene, xylene, etc. . In order to facilitate the modification reaction, organic peroxides such as benzoyl peroxide, di-t-butyl peroxide, dicumyl peroxide F% t-butyl peroxybenzoate, etc. or azobisisomer are added to the reaction system. It is effective to have a radical initiator represented by an azo compound exemplified by butyronitrile, azobisisovaleronitrile, etc. A more practical modification method is a method of melt-kneading in the presence of a radical initiator.

The modified polyphenylene sulfide used in the present invention is prepared by the following method, but is not particularly limited thereto. For example, modified polyphenylene sulfide is prepared by mixing the polyphenylene sulfide and a modifier using a four-mill, Banbury mixer 1 extruder, etc.
Even if prepared by melt-kneading and reacting at a temperature of 50 to 350°C, N-methylpyridone, α-
It may be prepared by heating and reacting polyphenylene sulfide and a modifier in a solvent such as chloronaphthalene.

In the resin composition of the present invention, the modified polyphenylene ether as the component (2) and the modified polyphenylene sulfide as the component (2) can be easily mixed in any ratio; however, in order to achieve the object of the present invention, ( 2) component modified polyphenylene 7z-chill 5-95% by weight, preferably 20-80% by weight and component (2) modified polyphenylene sulfide 95-5% by weight, preferably 480-9g
It is 20 weight j19 weight.

In addition, in order to promote the reaction between each component, the resin composition of the present invention contains tertiary 7-amines such as tri-n-butylamine, triphenylamine, benzylmethylamine, tris(dimethylamino)methylphenol; triethylbenzylammonium Catalysts typified by quaternary ammonium salts such as chloride and tetramethylammonium chloride; and imidazole compounds such as 2-methyl-4-ethylimidazole and 2-methyl-imidazole can be added.

Further, the method of blending both components constituting the resin composition of the present invention is not particularly limited, but after mixing both components with a mixer etc., they are melt-kneaded at a temperature of 250 to 350°C with an extruder, kneader, etc. By methods such as doing.

Depending on the location, the resin composition of the present invention may contain other resins; elastomers; flame retardants; various additives such as flame retardant aids, stabilizers, ultraviolet absorbers, plasticizers, lubricants; pigments, fillers; , and other components may be blended as appropriate.

Examples of other resins include polystyrene resin,
Examples include polycarbonate, polyester, polyamide, polysulfone, and the like.

The elastomer component is an elastomer in the general sense, for example A, V, Tobolsky
Author'Properties and 5tructure
es of Polynle rS''' (John
Wiley & 5ons, Inc., 1960)
The definition adopted on pages 71 to 78 can be cited, and elastomer is defined as Young's modulus at room temperature or lO~10'dy.
nes/J (0.1 to 1020 h/i). Specific examples of elastomers include A-
B-A' type elastomeric block copolymer, A-B-A in which the double bond of the polybutadiene portion is hydrogenated! Pear-shaped elastomer block copolymer, polybutadiene, polyisoprene, copolymer of diene compound and vinyl aromatic compound, nitrile rubber, ethylene-propylene copolymer,
Ethylene-propynone-diene copolymer (E PDM
), thiocol rubber, polysulfide rubber, acrylic acid rubber, polyurethane rubber, graft products of butyl rubber and polyethylene, polyester elastomer, polyamide elastomer, and the like. In particular, A-B-A
' type elastomeric plastic copolymers are preferred.

The terminal blocks A and N of this block copolymer are polymerized vinyl aromatic hydrocarbon blocks, B is a polymerized conjugated diene block or a conjugated diene block in which most of the double bonds are hydrogenated, It is desirable that the molecular weight of the B block is greater than the combined molecular weight of the A and A blocks. End blocks A and A
' may be the same or different, and the block is
It is a thermoplastic homopolymer or copolymer derived from a vinyl aromatic compound in which the aromatic moiety may be monocyclic or polycyclic. Examples of such vinyl aromatic compounds are styrene, α-
Mention may be made of methylstyrene, vinyltoluene, vinylxylene, ethylvinylxylene, vinylnaphthalene and mixtures thereof. Central block B is an elastomeric polymer derived from conjugated diene hydrocarbons such as 1,3-butadiene, 2,3-dimethylbutadiene, isoprene and 1,3-pesotadiene and mixtures thereof. The molecular weight of each end block A and A' preferably ranges from about 2,000 to about 100,000, while the molecular weight of central block B is preferably about 11 to about 2
It ranges from 5.000 to about 1,000°000.

To give examples of the various additives mentioned above, examples of flame retardants include:
Phosphates such as triphenyl phosphate, tricresyl phosphate, phosphates obtained from mixtures of isobutylphenol and phenol, phosphates obtained from difunctional phenols such as pentcitroquinone or bisphenol A and other alcohols or phenols. Acid esters: Brominated compounds represented by decabromo biphenyl, bentabu-p-sotoluene, decaboomobiphenyl ether, hexapur-7benzene, profluorinated polyethylene, etc.; Nitrogen-containing compounds such as cyanuric acid derivatives, melamine derivatives, etc. I can do it. Flame retardant aids may be used, examples of which include antimony, boron, zinc or iron compounds. Furthermore, other additives include stabilizers such as sterically hindered phenols and phosphite compounds; salicylate compounds;
Examples include ultraviolet absorbers such as oxalic acid diamide compounds and sterically hindered amine compounds; lubricants such as polyethylene wax, polypropylene wax, and paraffin. Furthermore, pigments such as titanium oxide, zinc halide, and zinc oxide; glass fiber, milled fiber, glass beads, asbestos, wollastonite, mica, talc, clay, carbonaceous, magnesium hydroxide, silica, and titanic acid. Mineral fillers exemplified by fibers, diatomaceous earth, rock wool; Inorganic fillers typified by flakes of aluminum and zinc, or metals such as brass, aluminum and zinc; Carbon fibers Representative organic fillers can be mentioned.

〔Example〕

Hereinafter, the polyphenylene ether resin composition of the present invention will be explained using Reference Examples, Examples, and Comparative Examples.

Reference example 1 Intrinsic viscosity measured in chloroform at 25°C is 0,
47 (dl/'7) of 2,6-dimethylphenol/
2,3.6-)dimethylphenol copolymer (2,3,6-) dimethylphenol copolymer (2,3,6-)
6-) The proportion of dimethylphenol is 5 mol%)3
After adding 90 g of maleic anhydride to Kt and mixing with a Henschel mixer, 300 to 320
The mixture was melted and kneaded at a temperature of .degree. C. to form a pellet.

After dissolving the obtained pellet 29 in chloroform 507t, methanol 500- was added to this solution to precipitate the polymer. The obtained polymer was separated and dried (under reduced pressure, 80° C., 10 hours). The obtained sample was subjected to infrared absorption analysis, and the weight percent of maleic anhydride bound to polyphenylene ether was calculated using a calibration curve prepared in advance from polyphenylene ether and maleic anhydride. This was defined as the amount of maleic acid bound.

The amount of binding was 1.1 wt.

Reference Example 2 The intrinsic viscosity of the polyphenylene ether of Reference Example t measured in go-form at 25°C is 0°47 di/! 7
The same operation as in Reference Example 1 was performed except that the 2,6-dimethylphenol polymer was used.

The amount of manoic anhydride bound was 0.8ffEJ1%.

Reference example 3 Intrinsic viscosity measured in chloroform at 25°C is 0,4
7 (dJ/9) of 2,6-dimethylphenol/2,
3.6-) dimethylphenol copolymer (2,3,6-
) The proportion of dimethylphenol is 5 moles')
3Kg of 2-hydroxyethyl acrylate) 15
．． ! After pouring 9 using a Henschel mixer,
The mixture was melt-kneaded using a twin-screw extruder at a temperature of 300 to 320°C to form a polyethylene fluoride.

Reference example 4 Intrinsic viscosity measured in chloroform at 25°C is 0,
47 (dA'/g) of 2,6-dimethylphenol/
2,3.6-) dimethylphenol copolymerization t+ (2,
3,6-) The proportion α occupied by dimethylphenol is 5 mol%
) Add 90 g of glycidyl methacrylate and 15.9 g of dicumyl peroxide to 3 h, mix with a Henschel mixer, and then mix with a twin-screw extruder.
The mixture was melted and kneaded at a temperature of 20°C to form a pellet.

After dissolving 2 g of the obtained pellet in Rita Roform 50-, 500 ml of methanol was added to this solution to precipitate the polymer. The obtained polymer was separated from F and dried (under reduced pressure, 80° C., 10 hours). The obtained sample was subjected to infrared absorption analysis, and the weight 9C of glycidyl methacrylate bonded to polyphenylene ether was calculated using a calibration curve prepared in advance from polyphenylene ether and glycidyl methacrylate. It was defined as the amount of binding. The binding amount was 1.3% by weight.

Reference example 5 Polyphenylene sulfide pellets C strain Taupe V-nose 111 Tauprene T-4P, melt viscosity 2800 poi
se (300°C)) 3Kf anhydrous maleic% 16.
After adding 2& and mixing well, 290 ~
The mixture was melt-kneaded and pelletized at a temperature of 320°C.

The resulting beret 49 was converted into α-chloronaphthalene 10
After heating and dissolving at 0rnt, the polymer was cooled and purified by suction filtration and washing with acetone. The obtained purified polymer was stirred in water to hydrolyze maleic anhydride, and then the polymer was separated by suction filtration, washed with ethanol, and vacuum-dried. Ethanol 100- and N/10 NaOH10- were added to the obtained polymer 3,9, and after stirring for 30 minutes, the amount of maleic anhydride bonded to the polymer was calculated by titrating with N/10H (J).As a result, The amount of maleic anhydride bound was 0.21 wt%.

Reference Example 6 19.29 kg of 2-hydroxyethyl acrylate was added to 3 kg of the polyphenylene sulfide used in Reference Example 5, and the mixture was thoroughly warmed and then melt-kneaded using a twin-screw extruder at a temperature of 290 to 320°C to form pellets. .

Reference Example 7 Glycidyl methacrylate (23.791) was added to the polyphenylene sulfide 3 K9 used in Reference Example 5,
After thoroughly mixing, the mixture was melt-kneaded using a twin-screw extruder at a temperature of 290 to 320°C to form pellets.

Reference Example 8 12 g of acrylic acid was added to 3 kg of the polyphenylene sulfide used in Reference Example 5, mixed well, and then melt-kneaded using a twin-screw extruder at a temperature of 290 to 320° C. to form pellets.

Example 1 A pellet of maleic anhydride-modified polyphenylene ether obtained in Reference Example 1 4 o ffi parts,! : Mixing 60 parts by weight of 2-hydroxyethyl acrylic v-1 modified polyphenylene sulfide pellets obtained in Reference Example 6,
Melt mixing was performed at 310° C., 60 r, p, m for 7 minutes using Labo Plastomill (manufactured by ELL Toyo Seiki Seisakusho). The obtained resin composition was dissolved in chloroform as a solvent for 16
A time sox V-extraction was performed. After vacuum drying at 80° C. for 10 hours, the weight was measured and the ratio of the extraction residue to the weight before extraction was determined.

In addition, the above resin composition was pressed at 310°C and 200K.
A sheet having a thickness of 0.31 was prepared using a pressure of f/-, and a test piece specified in ASTM D412 C was punched out from this sheet, and the tensile strength was measured.

The above results are shown in Table 1.

In addition, when a sample for scanning electron microscopy observation was cut out from the above resin composition, the surface to be observed was polished, treated with toluene, and examined under a scanning electron microscope, and it was found that modified polyphenylene ether of about 1 to 6 μm was uniformly fine. It was confirmed that they were dispersed.

Comparative Example 1 The same operation as in Example 1 except that the modified polyphenylene nitrate modified polyphenylene sulfide of Example 1 was replaced with the unmodified polyphenylene ether used in Reference Example 1 and the unmodified polyphenylene sulfide used in Reference Example 6. I did it.

The results are shown in Table 1.

Further, when the above resin composition was examined under a scanning electron microscope in the same manner as in Example 1, it was confirmed that the unmodified polyphenylene ether was coarsely dispersed in a non-uniform manner of about 10 to several tens of micrometers (').

Examples 2 to 4 Tablets of the manoic anhydride-modified polyphenylene ether obtained in Reference Example 1 and the 2-hydroxyethyl acrylate-modified polyphenylene sulfide obtained in Reference Example 6 are shown in Table 1. The same operation as in Example 1 was performed except that the compositions were mixed. The results are shown in Table 1.

Comparative Examples 2 to 4 The modified polyphenylene nitrate modified polyphenylene sulfide of Example 1 was replaced with the unmodified polyphenylene ether used in Reference Example 1 and the unmodified polyphenylene sulfide used in Reference Example 6, and the compositions shown in Table 1 were used. The same operation as in Example 1 was performed except for mixing. The results are shown in Table 1.

Comparative Example 5 The same operation as in Example 1 was performed except that the unmodified polyphenylene ether used in Reference Example 1 was used in place of the maleic anhydride-modified polyphenylene ether in Example 1. The results are shown in Table 1.

Example 5 Manninic anhydride modified polyphenylene obtained in Reference Example 2
The same operation as in Example 1 was performed except that 7 ether pellets 40111[S and 60 parts by weight of 2-hydroxyethyl acrylate-modified polyphenylene sulfide pellets obtained in Reference Example 6 were mixed.

As a result, the percentage of Soxhlet extraction residue was 95%. The tensile strength was 582 Kq/clI.

Comparative Example 6 Same as Example 5 except that the modified polyphenylene ether and modified polyphenylene sulfide of Example 5 were replaced with the unmodified polyphenylene ether used in Reference Example 2 and the unmodified polyphenylene sulfide used in Reference Example 6. performed the operation.

As a result, the percentage of Soxhlet extraction residue was 60%. Moreover, the tensile strength was 352 N/d.

Example 6 40 parts by weight of 2-hydroxyethyl acrylate-modified polyphenylene ether pellets obtained in Reference Example 3 and maleic anhydride-modified polyphenylene V obtained in Reference Example 5
The same operation as in Example 1 was carried out except that 601'i parts of sulfide (L/7) were mixed.

As a result, the percentage of Soxhlet extraction residue was 92! +(.The tensile strength was 576 Kv/!

Example 7 Example except that 40 parts by weight of the glycidyl methacrylate-modified polyphenylene ether obtained in Reference Example 4 and 60 parts by weight of the maleic anhydride-modified polyphenylene sulfide pellets obtained in Reference Example 5 were mixed. The same operation as in 1 was performed.

As a result, the percentage of Soxhlet extraction residue was 909 (909), and the tensile strength was 573 KIi/d.

Example 8 Pellets of maleic anhydride-modified polyphenylene ether obtained in Reference Example 1 40ffiJ 21 parts, Reference Example 7
The same operation as in Example 1 was performed except that 60 parts by weight of the glycidyl methacrylate-modified polyphenylene sulfide pellets obtained in Example 1 were mixed.

As a result, the percentage of Soxhlet extraction residue was 96%. The tensile strength was 583 K9/cl.

Example 9 Pellets of glycidyl methacrylate-modified polyphenylene ether obtained in Reference Example 4 401! Amount (parts) and beref of 2-hydroxyethyl acrylate-modified polyphenylene sulfite obtained in Reference Example 6) 60! ! lf
The same operation as in Example 1 was performed except that part f1 was mixed.

As a result, the percentage of Soxhlet extraction residue was 88%. Moreover, the tensile strength was 570 Kq/I.

Example 10 T1 Same as Example 1 except that 40 parts by weight of the glycidyl methacrylate-modified polyphenylene ether pellets obtained in Example 4 and 60 parts by weight of the acrylic acid-modified polyphenylene sulfide pellets obtained in Reference Example 8 were mixed. The operation was performed.

As a result, the percentage of Soxhlet extraction residue was 85%. Moreover, the tensile strength was 578 Kq/ctd.

〔Effect of the invention〕

As described above, the resin composition of the present invention has improved compatibility, excellent solvent resistance, and excellent mechanical strength, so it is suitable for applications such as mechanical structural materials, electrical and electronic parts, etc. Useful.

Patent applicant: Mitsubishi Gas Chemical Co., Ltd. Representative Patent Attorney (9070) Sadafumi Kobori

Claims (1)

[Claims] (A) Polyphenylene ether in the molecule contains (a) an ethylenic double bond, (b) a carboxyl group, an acid anhydride group,
A modified polyphenylene ether obtained by modifying it with a modifier selected from organic compounds having a functional group selected from the group consisting of a hydroxyl group and an epoxy group in the presence or absence of a radical initiator, and (B) polyphenylene sulfide. is modified with a modifier selected from organic compounds having in the molecule (a) an ethylenic double bond and (b) a functional group selected from the group consisting of a carboxyl group, an acid anhydride group, a hydroxyl group, and an epoxy group. A novel solvent-resistant resin composition comprising modified polyphenylene sulfide obtained by