Blow-molded article made from thermoplastic resin composition

A blow-molded article made from a polyphenylene ether/polyamide composition reinforced with glass fibers is provided. The article is excellent in mechanical properties and blow moldability. The composition comprises a mixture consisting of (A) 10-65 parts by weight of a polyphenylene ether and (B) 90-35 parts by weight of a polyamide and, on the basis of 100 parts by weight of said mixture, (C) 10-100 parts by weight of a glass fiber, (D) 1-35 parts by weight of a polyolefin and (E) 0.01-10 parts by weight of an unsaturated polar monomer compound having in its molecule both (a) carbon-carbon double bond or carbon-carbon triple bond and (b) carboxyl group, acid anhydride group, amino group, acid amide group, imide group, epoxy group, carboxylic acid ester group, isocyanate group, methylol group or hydroxyl group as a compatibilizing agent, amounts of (C), (D) and (E) being based on 100 parts by weight of [(A)+(B)].

BACKGROUND OF THE INVENTION 
The present invention relates to a blow-molded article made from a resin 
composition, and more particularly, to a blow-molded article made from a 
glass fiber-reinforced resin composition which comprises a polyphenylene 
ether and a polyamide as main resin components and is excellent in blow 
characteristics. 
Polyphenylene ethers are resins superior in mechanical properties and 
electric properties and high in heat resistance. However, polyphenylene 
ethers are inferior in processability and solvent resistance and are 
considerably limited in their uses. 
Polyamides are useful thermoplastic resins superior in processability and 
mechanical strength and are practically used in various fields, but have 
the defects such as large water absorption, low dimensional stability and 
formation of cracks upon contact with salts such as calcium chloride. 
Under the circumstances, it is industrially valuable to provide resin 
compositions having the merits of both the polyphenylene ether and the 
polyamide by blending these two resins and some proposals have already 
been made (Japanese Patent 45-997B). Moreover, resin compositions improved 
in compatibility between polyphenylene ether and polyamide are disclosed 
in Japanese Patent 60-11966B and 61-10494B and Japanese Patent 59-66452A 
and 56-49753A. 
However, these compositions are insufficient in rigidity and are limited in 
their use for constructional materials which require a high rigidity. 
To enhance the rigidity, incorporation of fillers such as glass fibers has 
been generally carried out. As such compositions comprising polyphenylene 
ether and polyamide, there are disclosed materials comprising aliphatic 
polyamides, polyphenylene ethers and fibrous reinforcing materials used 
for automobile engine parts (Japanese Patent 63-35652A), resin 
compositions comprising polyphenylene ethers, polyamides having a 
crystalline melting point of 265.degree.-320.degree. C., copolymers of 
styrene compounds and .alpha., .beta.-unsaturated carboxylic acid 
anhydrides and fibrous, flaky or powdered reinforcing materials (Japanese 
Patent 61-204263A), resin compositions comprising polyphenylene ethers, 
polyamides having more terminal amino groups than terminal carboxyl 
groups, saturated aliphatic polycarboxylic acids, rubber-like materials 
and fillers (Japanese Patent 62-240354A), resin compositions comprising 
polyphenylene ethers, polyamides, alkenyl aromatic compound-conjugated 
diene copolymers, compounds having both unsaturated group and polar group 
in one molecule and glass fibers (Japanese Patent 63-101452A) and resin 
compositions comprising polyamides, polyphenylene ethers, styrene-maleic 
anhydride copolymers, modified polyolefins and glass fibers (Japanese 
Patent 3-177454A). However, these polyphenylene ether/polyamide 
compositions reinforced with glass fibers are insufficient in mechanical 
properties and inferior in plastisizing properties or drawdown properties 
in blow molding and are not necessarily satisfactory for industrial 
application. 
SUMMARY OF THE INVENTION 
The object of the present invention is to provide a blow-molded article 
made from a glass fiber-reinforced polyphenylene ether/polyamide 
composition excellent in mechanical properties and blow moldability. 
As a result of intensive research conducted by the inventors, it has been 
found that a combination of a specific compatibilizing agent with a 
specific polyolefin, and a specific composition of polyolefin, polyamide, 
glass fiber, said specific compatibilizing agent and said specific 
polyolefin are decisive factors for obtaining the desired blow-molded 
article of a resin composition. Thus, the present invention has been 
accomplished. 
That is, the present invention relates to a blow-molded article made from a 
resin composition comprising: 
100 parts by weight of a mixture consisting of (A) 10-65% by weight of a 
polyphenylene ether and (B) 90-35% by weight of an polyamide, 
(C) 10-100 parts by weight of glass fibers, 
(D) 1-30 parts by weight of a polyolefin and 
(E) 0.01-10 parts by weight of an unsaturated polar monomer compound having 
in its molecule simultaneously (a) carbon-carbon double bond or 
carbon-carbon triple bond and (b) carboxyl group, acid anhydride group, 
amino group, acid amide group, imide group, epoxy group, carboxylic acid 
ester group, isocyanate group, methylol group or hydroxyl group as a 
compatibilizing agent. Amounts of (C), (D) and (E) are respectively based 
on 100 parts by weight of [(A)+(B)]. 
DESCRIPTION OF THE INVENTION 
The polyphenylene ether (A) used in the present invention is a homopolymer 
or a copolymer composed of the constituent unit represented by the 
following formula [I] or the constituent unit represented by the formula 
[I] and the constituent unit represented the following formula [II] as 
repeating units, a mixture of said homopolymer and said copolymer, a 
mixture of said polymer with a polystyrene or a graft copolymer of said 
polymer with styrene or the like: 
##STR1## 
wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 which may 
be identical or different each represents a monovalent residue such as an 
alkyl group of 1-4 carbon atoms excluding tert-butyl group, an aryl group, 
a halogen atom or a hydrogen atom and R.sub.3 and R.sub.5 cannot be 
simultaneously hydrogen atom. 
Typical examples of the polyphenylene ether as homopolymers are 
poly(2,6-dimethyl-1,4-phenylene) ether, 
poly(2-methyl-6-ethyl-1,4-phenylene)ether, 
poly(2,6-diethyl-1,4-phenylene)ether, 
poly(2-ethyl-6-n-propyl-1,4-phenylene)ether, 
poly(2,6-di-n-propyl-1,4phenylene)ether, 
poly(2-methyl-6-n-butyl-1,4-phenylene)ether, 
poly(2-ethyl-6-isopropyl-1,4-phenylene)ether, 
poly(2-methyl-6-chloro-1,4-phenylene) ether, 
poly(2-methyl-6-hydroxyethyl-1,4-phenylene)ether and 
poly(2-methyl-6-chloroethyl-1,4-phenylene)ether. 
The polyphenylene ether copolymers include those which are mainly composed 
of polyphenylene ether structure and which are obtained by 
copolymerization with o-cresol or an alkyl-substituted phenol such as 
2,3,6-trimethylphenol represented by the formula (Ill). 
##STR2## 
wherein R.sub.3, R.sub.4, R.sub.5 and R.sub.6 each represents a monovalent 
residue such as an alkyl group of 1-4 carbon atoms excluding tert-butyl 
group, an aryl group, a halogen atom or a hydrogen atom and R.sub.3 and 
R.sub.5 cannot be simultaneously hydrogen atom. 
The polyamides (B) are crystalline aliphatic polyamides and examples 
thereof are as shown below. 
They have a molecular weight of 10,000 or more and can be prepared by 
bonding equimolar saturated aliphatic dicarboxylic acid containing 4-12 
carbon atoms and aliphatic diamine containing 2-12 carbon atoms. In this 
case, if necessary, diamines and the like can be used so as to give amine 
terminal groups in excess of carboxyl terminal groups. On the other hand, 
dibasic acids can also be used so as to give excess acidic groups. 
Similarly, these polyamides can also be satisfactorily produced from 
derivatives which produce said acids or amines such as esters, acid 
chlorides and amine salts. Representative aliphatic dicarboxylic acids 
used for producing the polyamides include adipic acid, pimelic acid, 
azelaic acid, suberic acid, sebacic acid and dodecanedioic acid and 
representative aliphatic diamines include hexamethylenediamine and 
octamethylenediamine. In addition, these polyamides can also be produced 
by self-condensation of lactams. Examples of the polyamides include 
polyhexamethylene adipamide (nylon 66), polyhexamethylene azelamide (nylon 
69), polyhexamethylene sebacamide (nylon 610), polyhexamethylene 
dodecanoamide (nylon 612), poly-bis-(p-aminocyclohexyl)methane 
dodecanoamide, polytetramethylene adipamide (nylon 46), polyamides 
produced by ring cleavage of lactams, namely, polycaprolactam (nylon 6) 
and polylauryllactam. Furthermore, there may be used polyamides produced 
by polymerization of at least two amines or acids used for production of 
the above polymers, such as polymers produced from adipic acid, sebacic 
acid and hexamethylenediamine. Blends of polyamides such as blends of 
nylon 66 and nylon 6 include copolymers such as nylon 66/6. 
Among these crystalline polyamides, preferred are nylon 46, nylon 6, nylon 
66, nylon 11 and nylon 12. More preferred are nylon 6, nylon 66 or 
mixtures of nylon 6 and nylon 66 at an optional ratio. Regarding the 
terminal functional groups of these polyamides, suitable are those in 
which the content of terminal amino groups may be larger or that of 
terminal carboxyl groups may be larger or the two may be balanced or mixed 
at an optional ratio. 
The glass fibers (C) are those which are known in the art and preferably 
chopped strands of 15.mu. or less in fiber diameter and 6 mm or less in 
fiber length. If the diameter is more than 15.mu. the improvement of 
mechanical strength is small. Preferred are glass fibers of 10.mu. or less 
in diameter and 3 mm or less in length. 
In order to improve the interfacial adhesion and dispersibility of 
polyphenylene ether resins and/or polyamide resins, various coupling 
agents may be used together with the glass fibers. The coupling agents 
generally include silane and titanium coupling agents. Among them, 
prefered are silane coupling agents, for example, epoxysilanes such as 
.gamma.-glycidoxypropyltrimethoxysilane, vinylsilanes such as 
vinyltrichlorosilane and aminosilanes such as 
.gamma.-aminopropyltriethoxysilane. 
The polyolefins (D) are homopolymers or copolymers of olefins or copolymers 
of olefins with other monomers. Examples of the polyolefins are 
homopolymers of .alpha.-olefins such as polyethylene, polypropylene, 
polybutene and polyisobutylene; homopolymers of dienes such as natural 
rubber, polybutadiene, polyisoprene and polychloroprene; copolymers of 
olefins such as ethylene-propylene copolymer, ethylene-propylene-diene 
copolymer, ethylene-butene copolymer, ethylene-butene-diene copolymer, 
ethylene-pentene copolymer and ethylene-hexene copolymer; and copolymer of 
olefins with other monomers such as ethylene-acrylate ester copolymers, 
butadiene-acrylonitrile copolymer, butadiene-styrene copolymers, 
isoprene-styrene copolymers including various block, graft and random 
copolymers and hydrogenated products thereof. Additionally, modified 
products obtained by reacting these polyolefins with reactive compounds 
such as unsaturated carboxylic acids or derivatives thereof are also 
included in the polyolefins used in the present invention. The preferable 
polyolefins are homopolymers of .alpha.-olefins, copolymers of 
.alpha.-olefins and modified products of these polymers. More preferred 
are ethylene-.alpha.-olefin copolymers and modified products thereof. The 
most preferable polyolefins are ethylene-butene-1 copolymers and modified 
products thereof. 
The polyolefin (D) can be a polyolefin which is not compatible with the 
polyphenylene ether (A). 
The compatibilizing agents (E) are unsaturated polar monomer compounds 
having in their molecules simultaneously (a) carbon-carbon double bond or 
carbon-carbon triple bond and (b) carboxyl group, acid anhydride group, 
amino group, acid amide group, imide group, epoxy group, carboxylic acid 
ester group, isocyanate group, methylol group or hydroxyl group. As 
examples of these compounds, mention may be made of maleic anhydride, 
maleic acid, fumaric acid, maleimide, maleic hydrazide, reaction products 
of maleic anhydride and diamines, for example, those having the structure 
represented by the following formula: 
##STR3## 
wherein R represents an aliphatic or aromatic group, methyl nadic 
anhydride, dichloromaleic anhydride, maleinimide; natural fats and oils 
such as soybean oil, tung oil, caster oil, linseed oil, hempseed oil, 
cottonseed oil, sesame oil, rapeseed oil, peanut oil, tsubaki oil, olive 
oil, coconut oil, and sardine oil; epoxidized natural fats and oils such 
as epoxidized soybean oil; unsaturated carboxylic acids such as acrylic 
acid, butenoic acid; crotonic acid, vinylacetic acid, methacrylic acid, 
pentenoic acid, angelic acid, tiglic acid, 2-pentenoic acid, 3-pentenoic 
acid, .alpha.-ethylacrylic acid, .beta.-methylcrotonic acid, 4-pentenoic 
acid, 2-hexenoic acid, 2-methyl-2-pentenoic acid, 3-methyl-2-pentenoic 
acid, .alpha.-ethylcrotonic acid, 2,2-dimethyl-3-butenoic acid, 
2-heptenoic acid, 2-octenoic acid, 4-decenoic acid, 9-undecenoic acid, 
10-undecenoic acid, 4-dodecenoic acid, 5-dodecenoic acid, 4-tetradecenoic 
acid, 9-tetradecenoic acid, 9-hexadecenoic acid, 2-octadecenoic acid, 
9-octadecenoic acid, eicosenoic acid, docosenoic acid, erucic acid, 
tetracosenoic acid, mycolipenic acid, 2,4-pentadienoic acid, 
2,4-hexadienoic acid, diallylacetic acid, geranic acid, 2,4-decadienoic 
acid, 2,4-dodecadienoic acid, 9,12-hexadecadienoic acid, 
9,12-octadecadienoic acid, hexadecatrienoic acid, linolic acid, linoleic 
acid, octadecatrienoic acid, eicosadienoic acid, eicosatrienoic acid, 
eicosatetraenoic acid, ricinoleic acid, eleostearic acid, oleic acid, 
eicosapentaenoic acid, docosadienoic acid, docosatrienoic acid, 
docosatetraenoic acid, docosapentaenoic acid, tetracosenoic acid, 
hexacosenoic acid, hexacodienoic acid, octacosenoic acid and 
tetracontenoic acid, esters, acid amides and anhydrides of these 
unsaturated carboxylic acids; alcohols such as allyl alcohol, crotyl 
alcohol, methylvinylcarbinol, allylcarbinol, methylpropenylcarbinol, 
4-pentene-1-ol, 10-undecene-1-ol, propargyl alcohol, 1,4-pentadiene-3-ol, 
1,4-hexadiene-3-ol, 3,5-hexadiene-2-ol, 2,4-hexadiene-1-ol, alcohols 
represented by the formulas C.sub.n H.sub.2n-5 OH, C.sub.n H.sub.2n-7 OH, 
and C.sub.n H.sub.2n-9 OH, wherein n is a positive integer; unsaturated 
alcohols such as 3-butene-1,2-diol, 2,5-dimethyl-3-hexene-2,5-diol, 
1,5-hexadiene-3,4-diol, and 2,6-octadiene-4,5-diol; unsaturated amines 
prepared by substituting the OH group of these unsaturated alcohols with 
--NH.sub.2 group; glycidyl acrylate, glycidyl methacrylate, and allyl 
glycidyl ether. 
It is needless to say that the compounds used as the compatibilizing agents 
include compounds containing two or more functional groups of the above 
(a) and two or more identical or different functional groups of the above 
(b). It is also possible to use two or more of these compounds. Among 
them, suitable are maleic anhydride, maleic acid, fumaric acid, itaconic 
acid, himic anhydride, glycidyl acrylate, glycidyl methacrylate and allyl 
glycidyl ether. 
The mixing ratio of the components in the resin composition of the present 
invention is as follows: 10-100 parts by weight of the glass fiber (C), 
1-35 parts by weight of the polyolefin (D) and 0.01-10 parts by weight of 
the compatibilizing agent (E) on the basis of 100 parts by weight in total 
of 10-65 parts by weight of the polyphenylene ether (A) and 90-35 parts by 
weight of the polyamide (B), namely, on the basis of [(A)+(B)] and 
preferably, 15-80 parts, more preferably 15-65 parts by weight of the 
glass fiber (C), 3-25 parts by weight of the polyolefin (D) and 0.1-5 
parts by weight of the compatibilizing agent (E) on the basis of 100 parts 
by weight in total of 25-60 parts by weight of the polyphenylene ether (A) 
and 75-40 parts by weight of the polyamide (B). 
The resin composition of the present invention may further contain 
inorganic fillers, pigments, ultraviolet absorbers, heat stabilizers, 
antioxidants, other resins such as polystyrene, plasticizers and the like. 
There is no limitation in the method of blending (A) polyphenylene ether, 
(B) polyamide, (C) glass fiber, (D) polyolefin and (E) compatibilizing 
agent and any known melt kneading methods can be employed. Extruders, 
kneaders, rolls and the like can be used as melt kneading apparatuses and 
especially preferred are extruders. There is also no special limitation in 
the sequence of adding the respective components in melt kneading. 
That is, there may be employed any of the following methods: a method of 
simultaneously adding the components (A), (B), (C), (D) and (E) and melt 
kneading them together; a method of previously melt kneading the 
components (A), (D) and (E) in the presence or absence of a radical 
initiator and then adding thereto the components (S) and (C), followed by 
melt kneading them; a method of previously melt kneading the components 
(A), (C), (D) and (E) in the presence or absence of a radical initiator 
and then adding thereto the component (B), followed by melt kneading them: 
and a method of previously melt kneading the components (A), (D) and (E), 
then adding thereto the component (B) and further adding thereto the 
component (C), followed by melt kneading them. However, preferably the 
polyphenylene ether and the compatibilizing agent are kneaded at least 
before the polyamide is kneaded. 
The following examples are set forth for purposes of illustration of the 
present invention. It should be understood that they are exemplary only, 
and should not be construed as limiting the invention in any manner. The 
test methods for evaluation of the properties employed in the examples 
were as follows: 
Blow Moldability 
(1) Parison properties: A parison is extruded at 170 g/min and at 
270.degree. C. from a 50 mm.phi. blow molding machine manufactured by The 
Japan Steel Works, Ltd. and the length of the parison immediately before 
the falling rate of the parison begins to abruptly increase by gravity or 
the like (critical parison length) is measured. The longer critical 
parison length means the better parison properties. 
(2) Plasticizing properties: Cylinder preset temperature at which the 
metering time is stabilized is obtained under the following conditions 
using Sumitomo Nestal injection molding machine SICAP 110/50 (manufactured 
by Sumitomo Heavy Industries Ltd.). The lower preset temperature means the 
better plasticizing properties, 
Screw torque: 13 Kqfm 
Screw revolution speed: 50 rpm 
Metering stroke: 68 mm 
Cylinder preset temperature: Temperature elevated from 225.degree. C. at an 
interval of 5.degree. C. (Nozzule temperature is constant at 260.degree. 
C.) 
Mechanical properties: A test piece is prepared by IS220E injection molding 
machine manufactured by Toshiba Machine Co., Ltd. 
(1) Flexural modulus=ASTM D790 
(2) Flexural strength: ASTM D790 
(3) Izod impact strength: ASTM D256 (A notched test piece having a 
thickness of 3.2 m)

EXAMPLE 1 
Fifteen parts by weight of polyphenylene ether having an intrinsic 
viscosity of 0.57 measured in a chloroform solution having a concentration 
of 0.5 g/dl at 30.degree. C. 0.3 part by weight of maleic anhydride (MAH) 
as a compatibilizing agent, and 3.5 parts by weight of maleic 
anhydride-modified polypropylene resin (m-PP) and 14 parts by weight of 
polypropylene resin (PP) as polyolefins were introduced from the first 
hopper of a continuous twin-screw kneader (TEM 50 manufactured by Toshiba 
Machine Co., Ltd.) and furthermore, 35 parts by weight of a polyamide 
(Unitika Nylon A1030BRT.RTM. ) and 30 parts by weight of glass fiber 
(RESO3TP64 manufactured by Nippon Glass Fiber Co., Ltd.) were introduced 
from the second hopper provided between the first hopper and a vent hole 
using a weigh-feeder and these were melt kneaded at a screw revolution 
speed of 330 rpm with setting the cylinder temperature at 260.degree. C. 
and pelletized. Mechanical properties of the resulting composition were 
measured. 
EXAMPLE 2 
Thirty-five parts by weight of polyphenylene ether having an intrinsic 
viscosity of 0.57 measured in a chloroform solution having a concentration 
of 0.5 g/dl at 30.degree. C., 0.3 part by weight of maleic anhydride as a 
compatibilizinq agent, and 5 parts by weight of ethylene-butene-1 
copolymer (EBR) having a butene-1 content of 18% by weight and a 
100.degree. C. Mooney viscosity ML.sub.1+4 100 of 30 prepared by 
homogeneous solution polymerization in accordance with the method 
described in Japanese Patent 44-9390B as a polyolefin were introduced from 
the first hopper of a continuous twin-screw kneader (TEM 50 manufactured 
by Toshiba Machine Co., Ltd.) and furthermore, 45 parts by weight of a 
polyamide (Unitika Nylon A1030BRT.RTM.) and 15 parts by weight of glass 
fiber (RESO3TP64 manufactured by Nippon Glass Fiber Co., Ltd.) were 
introduced from the second hopper provided between the first hopper and a 
vent hole using a weigh-feeder and these were melt kneaded at a screw 
revolution speed of 330 rpm with setting the cylinder temperature at 
260.degree. C. and pelletized. Mechanical properties, parison properties 
and plasticizing properties of the resulting composition were measured. 
EXAMPLE 3 
A resin composition was prepared at the same blending ratio and extrusion 
conditions as in Example 2 except that a maleic anhydride-modified 
ethylene-butene-1 copolymer having a grafting amount of maleic anhydride 
of 1.0 wt % (based on the rubber) (m-EBR) was used as the 
ethylene-butene-1 copolymer. The resulting resin composition was 
evaluated. 
COMATIVE EXAMPLE 1 
A resin composition was prepared at the same blending ratio and extrusion 
conditions as in Example 1 except that 3.5 parts by weight of 
styrene-maleic anhydride copolymer (DILARK 232 manufactured by Sekisui 
Kaseihin Kogyo Co.) was used as the compatibilizing agent. The resulting 
composition was evaluated. 
COMATIVE EXAMPLE 2 
A resin composition was prepared at the same blending ratio and extrusion 
conditions as in Example 2 except that the ethylene-butene-1 copolymer was 
not added. The resulting resin composition was evaluated 
EXAMPLE 4 
A resin composition was prepared at the same blending ratio and extrusion 
conditions as in Example 2 except that a maleic anhydride-modified 
ethylene-propylene copolymer [SUMITOMO ESPRENE.RTM. E120P having a 
grafting amount of maleic anhydride of 1.5 wt % (based on the rubber) 
(m-EPR)] was used as the polyolefin. The resulting resin composition was 
evaluated. 
These results were shown in Table 1. 
COMATIVE EXAMPLE 3 
Forty-one parts by weight of polyphenylene ether having an intrinsic 
viscosity of 0-57 measured in a chloroform solution having a concentration 
of 0.5 g/dl at 30.degree. C., 0.3 part by weight of maleic anhydride as a 
compatibilizing agent, and 6 parts by weight of m-EBR were introduced from 
the first hopper of a continuous twin-screw kneader (TEM 50 manufactured 
by Toshiba Machine Co., Ltd.), and furthermore 53 parts by weight of 
polyamide (Unitika Nylon A1030BRT.RTM.) was introduced from the second 
hopper provided between the first hopper and a vent hole, using a 
weigh-feeder, and these were melt kneaded at a screw revolution speed of 
330 rpm setting the cylinder temperature at 260.degree. C. and pelletized. 
Mechanical properties, parison properties and plasticizing properties of 
the resulting composition were measured. 
COMATIVE EXAMPLE 4 
Thirty-seven parts by weight of polyphenylene ether having an intrinsic 
viscosity of 0.57 measured in a chloroform solution having a concentration 
of 0.5 g/dl at 30.degree. C., 0.3 part by weight of maleic anhydride as a 
compatibilizing agent and 5 parts by weight of m-EBR were introduced from 
the first hopper of a continuous twin-screw kneader (TEM 50 manufactured 
by Toshiba Machine Co., Ltd. ), and furthermore 53 parts by weight of 
polyamide (Unitika Nylon A1030BRT.RTM.) and 5 parts by weight of glass 
fiber (RES03TP64 manufactured by Nippon-Glass Fiber Co., Ltd.) were 
introduced from the second hopper provided between the first hopper and a 
vent hole, using a weigh-feeder, and these were melt kneaded at a screw 
revolution speed of 330 rpm setting the cylinder temperature at 
260.degree. C. and pelletized. Mechanical properties, parison properties 
and plasticizing properties of the resulting composition were measured. 
EXAMPLE 5 
Thirty-four parts by weight of polyphenylene ether having an intrinsic 
viscosity of 0.57 measured in a chloroform solution having a concentration 
of 0.5 g/dl at 30.degree. C., 0.2 part by weight of maleic anhydride as a 
compatibilizing agent, and 5 parts by weight of m-EBR were introduced from 
the first hopper of a continuous twin-screw kneader (TEM 50 manufactured 
by Toshiba Machine Co., Ltd.) and, furthermore 51 parts by weight of 
polyamide (Unitika Nylon AI030BRT.RTM.) and 10 parts by weight of glass 
fiber (RES03TP64 manufactured by Nippon Glass Fiber Co., Ltd.) were 
introduced from the second hopper provided between the first hopper and a 
vent hole, using a weigh-feeder, and these were melt kneaded at a screw 
revolution speed of 330 rpm setting the cylinder temperature at 
260.degree. C. and pelletized. Mechanical properties, parison properties 
and plasticizing properties of the resulting composition were measured. 
EXAMPLE 6 
A resin composition was prepared at the same extrusion conditions as in 
Example 5 except that 32 parts by weight of the polyphenylene ether, 48 
parts by weight of the polyamide and 15 parts by weight of the glass fiber 
were used in place of 34, 51 and 10 parts, respectively. The resulting 
resin composition was evaluated. 
These results were shown in Table 2. 
TABLE 1 
__________________________________________________________________________ 
Example 
Example 
Example 
Example 
Comparative 
Comparative 
1 2 3 4 Example 1 
Example 2 
__________________________________________________________________________ 
Polyphenylene 
15 35 35 35 15 35 
ether (part) 
Polyamide (part) 
35 45 45 45 35 45 
Polyolefin (part) 
m-pp/pp 
EBR m-EBR 
m-EPR 
m-pp/pp 
-- 
17.5 5 5 5 17.5 
Glass fiber (part) 
30 15 15 15 30 15 
Compatibilizing 
MAH MAH MAH MAH DILARK MAH 
agent 0.3 0.3 0.3 0.3 232 0.3 
(part) 3.5 
Flexural modulus 
74,000 
44,000 
44,000 
43,000 
68,000 46,000 
(Kg/cm.sup.2) 
Flexural strength 
1,740 
1,300 
1,300 
1,200 
1,280 1,500 
(Kg/cm.sup.2) 
Izod Impact strength 
8 10 10 9 5 8 
(Kg .multidot. cm/cm) 
Critical parison 
-- 500 550 450 -- 420 
length (mm) 
Plasticizing 
-- 230 230 230 -- 265 
properties (.degree.C.) 
__________________________________________________________________________ 
TABLE 2 
______________________________________ 
Com- Com- 
parative 
parative 
Example 
Example Example Example 
3 4 5 6 
______________________________________ 
Polyphenylene 
41 37 34 32 
ether (part) 
Polyamide (part) 
53 53 51 48 
Polyolefin (part) 
m-EBR m-EBR m-EBR m-EBR 
6 5 5 5 
Glass fiber (part) 
-- 5 10 15 
Compatibilizing 
MAH MAH MAH MAH 
agent 0.3 0.3 0.2 0.2 
(part) 
Flexural modulus 
22,000 27,000 33,000 40,000 
(Kg/cm.sup.2) 
Flexural strength 
920 1,100 1,200 1,300 
(Kg/cm.sup.2) 
Izod Impact strength 
9 9 10 11 
(Kg .multidot. cm/cm) 
Critical parison 
400 420 500 500 
length (mm) 
Plasticizing 230 230 230 230 
properties (.degree.C.) 
______________________________________ 
The resin compositions prepared in examples are molded into various parts 
by blow molding method and can be put on the market. The parts to which 
the resin compositions are applied are automobile parts such as air ducts, 
resonators and the like.