CA1244567A - Thermoplastic molding materials - Google Patents
Thermoplastic molding materialsInfo
- Publication number
- CA1244567A CA1244567A CA000470881A CA470881A CA1244567A CA 1244567 A CA1244567 A CA 1244567A CA 000470881 A CA000470881 A CA 000470881A CA 470881 A CA470881 A CA 470881A CA 1244567 A CA1244567 A CA 1244567A
- Authority
- CA
- Canada
- Prior art keywords
- weight
- parts
- molding material
- thermoplastic molding
- acrylic acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
- C08L25/08—Copolymers of styrene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/04—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to rubbers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
- C08L71/08—Polyethers derived from hydroxy compounds or from their metallic derivatives
- C08L71/10—Polyethers derived from hydroxy compounds or from their metallic derivatives from phenols
- C08L71/12—Polyphenylene oxides
- C08L71/123—Polyphenylene oxides not modified by chemical after-treatment
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
The invention relates to a thermoplastic molding material which contains a mixture of (I) from 95 to 5%
by weight of a polyphenylene ether and (II) from 5 to 95%
by weight of a copolymer consisting of A1) from 78 to 99 parts by weight of a monovinylaromatic compound, A2) from 1 to 12 parts by weight of (meth)acrylic acid and B) from 0 to 20 parts by weight of an elastomer component which has a glass transition temperature of ? 0° C, the sum of the number of parts by weight being 100. This molding material processes appropriately high heat distortion resis-tance, good resistance to chemicals and well balanced mech-anical properties.
The invention relates to a thermoplastic molding material which contains a mixture of (I) from 95 to 5%
by weight of a polyphenylene ether and (II) from 5 to 95%
by weight of a copolymer consisting of A1) from 78 to 99 parts by weight of a monovinylaromatic compound, A2) from 1 to 12 parts by weight of (meth)acrylic acid and B) from 0 to 20 parts by weight of an elastomer component which has a glass transition temperature of ? 0° C, the sum of the number of parts by weight being 100. This molding material processes appropriately high heat distortion resis-tance, good resistance to chemicals and well balanced mech-anical properties.
Description
~9~4S67 ; ~, ~ 1 - O.Z. 0050/36~75 Thermopl_as~ic molding materials The present invention relates to thermoplastic molding materials which are based on polyphenylene ethers and styrene/acrylic acid copolymers and may or may not have been toughened.
9lends of polyphenylene ethers and styrene poly-mers are known, and form the subject of a number of patents. The relevant prior art includes (1) U.S. Patent 3,383,435, (2) German La;d-Open Application DO~ 2,713,43 and (3) U.S. Patent 4,300,618.
(1) describes compositions comprising polyphenyl-ene ethers and styrene resins. Either the latter can be modified with rubber, generally polybutadiene, or pure polystyrene can be used. However, the heat resistance and the mechanical properties of these blends, and their resistance to chemicals, frequently do not meet the requirements set.
If the styrene resin in ~1) is replaced by sty _ rene/maleic anhydride copoLymers tS-MAA), as descr;bed in
9lends of polyphenylene ethers and styrene poly-mers are known, and form the subject of a number of patents. The relevant prior art includes (1) U.S. Patent 3,383,435, (2) German La;d-Open Application DO~ 2,713,43 and (3) U.S. Patent 4,300,618.
(1) describes compositions comprising polyphenyl-ene ethers and styrene resins. Either the latter can be modified with rubber, generally polybutadiene, or pure polystyrene can be used. However, the heat resistance and the mechanical properties of these blends, and their resistance to chemicals, frequently do not meet the requirements set.
If the styrene resin in ~1) is replaced by sty _ rene/maleic anhydride copoLymers tS-MAA), as descr;bed in
(2), the heat distortion resistance of the blends~ and their resistance to chem;calsr can be improved, but the mechanical properties of the blends obtained are unsatis-factory, even when rubber-modified S-MAA copolymers are used.
(3) describes blends of polyphenylene ethers and styrene/acrylonitrile copolymers which possess high rigi-dity and ;mproved resistance to chemicals. However, the ; toughness and the heat distortion resistance are still not completely satisfactory.
It is an object of the present invention to pro-vide thermoplastic molding materials which are based on blends of polyphenylene ethers and styrene polymers and which possess appropriately high heat distortion resis-tance, good resistance to chemicals and well balanced mech-anical properties.
We have found that this object is achieved by m0ld-;ny mater;als which contain a mixture of
It is an object of the present invention to pro-vide thermoplastic molding materials which are based on blends of polyphenylene ethers and styrene polymers and which possess appropriately high heat distortion resis-tance, good resistance to chemicals and well balanced mech-anical properties.
We have found that this object is achieved by m0ld-;ny mater;als which contain a mixture of
4~67 (I) from 95 to 5% by weight of a polyphenylene ether and tII) from 5 to 95% by weiyht of a copolymer consisting of A1) from 73 to 99 parts by we;ght of a monovinyl-aromatic compound, A2) from 1 to ~2 parts by weight of (meth)acrylic acid, and B) from 0 to 20 parts by weight of an elastomer component which has a glass transition tempera-ture of ~ 0C, ~he sum of the number of parts by we;ght being 100.
The components of the novel molding material, their preparat;on~ and the preparation of the molding material are described below.
Component I
Component I of the novel molding material compri-ses one or more resins which are composed of a polyphenyl-ene ether tPPE) and are present in amounts of from 95 to
The components of the novel molding material, their preparat;on~ and the preparation of the molding material are described below.
Component I
Component I of the novel molding material compri-ses one or more resins which are composed of a polyphenyl-ene ether tPPE) and are present in amounts of from 95 to
5, preferably from 70 to 30, % by weight, based on the mixture of I and II.
The polyethers are compounds which are based on polyphenylene oxides disubstituted ;n the ortho-position, the ether oxygen of one unit being bonded to the benzene nucleus of the adjacent unit. Not less than 50 un;ts should be bonded to one another in this way. The poly-ethers can carry, ;n the ortho-pos;t;on to the oxygen, hydrogen, halogen, a hydrocarbon radical which does not possess a tert;ary X-hydrogen atom, a halohydrocarbon, phenyl or a hydrocarbon-oxy radical. Examples are poly-(2,6-dichloro-1,4~phenylene) ether, poly(2,6-diphenyl-1,4-phenylene) ether, poly(2,6-dimethoxy-1,4 phenylene) ether, polyt2,6-d;methyl-1,4-phenylene~ ether and poly(2,6-di-bromo-1,4-phenylene) ether. Poly(2,6-dimethyl-1,4-phenyl-ene) ethers are preferably employed, those having a limit-;ng v;scosity of from 0.45 to 0.65 dl/g tmeasured in chloroform at 30C) being particularly preferred.
The polyphenylene ethers can be prepared from the phenols ~n a conventional manner, for example in the ,~, . ;1 presence of a complex~forming agent, such as copper bro-mide or sec.-dibutylamine.
Component II
Component Il of the noyel molding materials com-prises one or more styrene/(meth)acrylic acid copolymerswhich may or may not have been toughened. It consists of the monomers A1) and A2) and, i~ it has been toughened, of the elastomer component B.
The novel molding materials contain component II
;n an amount of from 5 to 95, preferably From 30 to 70~
% by weight based on the amounts o~ components I and II.
Su;table monovinyl-aromatic monomers A1) are styrene, ~-methylstyrene and styrenes of not more than 12 carbon atoms which are alkylated in the nucleus, par-ticularly preferably styrene, o~-methylstyrene and p-methylstyrene.
Acrylic acid and/or methacrylic acid are used as the monomers A2). Component II contains from 78 to 99, preferably from 91 to 99, parts by weight of monomer A1) and from 1 to 12, preferably from 1 to 9, parts by weight of monomer A2), the sum of the number of parts by weight be;ng 100, unless component 8 is present.
Constituent A of component I is prepared by con-tinuous copolymerization of the monomers A1) and A2) at elevated temperatures, while stirring vigorously. The monomers A1~ and Az) are introduced continuously into a polymerization vessel, and an amount of polymerization mixture equivalent to these amounts is simultaneously removed from ~he vessel (cf. A. W. Hanson and R. L.
3û Zimmermann, Industrial Eng. Chemistry 49 ~1957), 803).
However, constituent A can also be prepared by any other conventional polymeriza~ion method.
Constituent B
Constituent B is an elastomer component which may or may not be present in the novel molding materials. It is a graft polymer which is used in an amount of from û
to 2û, in particular from 1 to 18, parts by we;ght, the r l'` ~
- 4 - O.Z. 0050/3687S
sum of the number of parts by ~eight of a~ A1) and A
being 10U~
This graft copolymer consists of from 10 to 50, preferably from 15 to 45, parts by weight of a mix~ure of one or more v;nyl-aromatic monomers of not more than 12 carbon atoms, and from û.1 to Z5, preferably from 5 to 20, parts by weight of one or more tmeth~acrylates andJor acrylonitrile and/or (meth)acrylic acid and/or maleic an-hydride as a grafted shell, on 50 - 90, in part;cular 60 - ~0, parts by weight of an elastomeric graftin~ base (rubber component).
This rubber component should have a glass transi-tion temperature (according to K~ H. Illers and H. ~reuer, Kolloid-Zeitschrift 176 ~19~1), 110) of below 0C. Exam-ples of suitab`le rubbers are polybutadiene (cf~ GermanLaid-Open Applications DOS 1,420,775 and DOS 1,495~089), copolymers of butadiene and styrene (cf. British Patent 649,166), copolymers of butadiene and styrene and poly-acrylates which may or may not be crosslinked (cf. German Publ;shed Applica~ions DAS 1~138r921, DAS 1,2~4,4~ and DAS 1,260,135), copolymers of acrylates and butadiene (cf. German Published Application DAS 1,238,2~7), elasto-mers of copolymers of acrylates w;th styrene, acrylonit-rile and vinyl ethers and copolymers of ethylene with a non-conjugated diene tEPDM rubber), and hydrogenated sty-rene~butadiene rubber polymers.
The vinyl-aromatic graft monomers are styrene, ~ -methylstyrene and/or styrenes of not more than 12 car-bon atoms which are alkylated in the nucleus; suitable polar monomers are acrylates and methacrylates of alkanols of not more than 8 carbon atoms, acrylonitrile, acrylic acid, methacrylic acid and maleic anhydride, and mixtures of these.
The preparation of the elastomer components B is kno~n per se~ They can be prepared by, for example, poly-merization of a mixture of styrene and acrylic acid or tmeth)acrylates in the presence of a rubber. The graft 5~7 , 5 - O.Z. 0050/36875 copolymerization can be carried out in a conventional manner, in solution, in suspension or, preferably, in emul-sion. It is essential fcr success that the constituents - A and B of component II of the novel rnolding material have a composition, and are matched up with one another in the mixture, so that the absolute amounts of the polar monomers in constituents A and B differ by less than 9.
Component II of the noveL mo~ding materials is preferably obtained by mixing melts of constituents A and B. To do this, constituents A and a, in the form of metts, are mixed at from Z~0 to 260C in an extruder, a roll mill or a kneader, the residence time being a few minutes.
However, it is also possible to m;x solutions of consti-tuent A and of the graft copolymer B, and then to vola-tilize the solvents~
In addition to containing components I and II,the novel molding material can~ if required, contain effective amounts of conventional additives. Examples of _ such additives are pigments, dyes, ~illers, flameproofing agents, such as triaryl phosphates, other compatible poly-mers, antistatic agents, antioxidants and lubricants.
Preparation of the novel molding materials from components I and II
The molding material according to the invention can be prepared from components I and II as described below. However, the molding material is preferably pre-pared from constituents A and 8 and component I, w;th or without other additives, by mixing the so~t and hard con-stituents (of component II) and the polyphenylene ethers.
The preparation is usually carried out in an apparatus which permits homogeneous mixing, eg. a kneader~ an extru-der or a roll mill.
However, it is also possible to prepare the novel molding material by thoroughly mixing solutions of the indi-vidual components and then evaporating the solvent mixture.Combined processes in which solutions and melts are mixed, for example in a devolatilization extruder, have also been ~2~S~i~
The polyethers are compounds which are based on polyphenylene oxides disubstituted ;n the ortho-position, the ether oxygen of one unit being bonded to the benzene nucleus of the adjacent unit. Not less than 50 un;ts should be bonded to one another in this way. The poly-ethers can carry, ;n the ortho-pos;t;on to the oxygen, hydrogen, halogen, a hydrocarbon radical which does not possess a tert;ary X-hydrogen atom, a halohydrocarbon, phenyl or a hydrocarbon-oxy radical. Examples are poly-(2,6-dichloro-1,4~phenylene) ether, poly(2,6-diphenyl-1,4-phenylene) ether, poly(2,6-dimethoxy-1,4 phenylene) ether, polyt2,6-d;methyl-1,4-phenylene~ ether and poly(2,6-di-bromo-1,4-phenylene) ether. Poly(2,6-dimethyl-1,4-phenyl-ene) ethers are preferably employed, those having a limit-;ng v;scosity of from 0.45 to 0.65 dl/g tmeasured in chloroform at 30C) being particularly preferred.
The polyphenylene ethers can be prepared from the phenols ~n a conventional manner, for example in the ,~, . ;1 presence of a complex~forming agent, such as copper bro-mide or sec.-dibutylamine.
Component II
Component Il of the noyel molding materials com-prises one or more styrene/(meth)acrylic acid copolymerswhich may or may not have been toughened. It consists of the monomers A1) and A2) and, i~ it has been toughened, of the elastomer component B.
The novel molding materials contain component II
;n an amount of from 5 to 95, preferably From 30 to 70~
% by weight based on the amounts o~ components I and II.
Su;table monovinyl-aromatic monomers A1) are styrene, ~-methylstyrene and styrenes of not more than 12 carbon atoms which are alkylated in the nucleus, par-ticularly preferably styrene, o~-methylstyrene and p-methylstyrene.
Acrylic acid and/or methacrylic acid are used as the monomers A2). Component II contains from 78 to 99, preferably from 91 to 99, parts by weight of monomer A1) and from 1 to 12, preferably from 1 to 9, parts by weight of monomer A2), the sum of the number of parts by weight be;ng 100, unless component 8 is present.
Constituent A of component I is prepared by con-tinuous copolymerization of the monomers A1) and A2) at elevated temperatures, while stirring vigorously. The monomers A1~ and Az) are introduced continuously into a polymerization vessel, and an amount of polymerization mixture equivalent to these amounts is simultaneously removed from ~he vessel (cf. A. W. Hanson and R. L.
3û Zimmermann, Industrial Eng. Chemistry 49 ~1957), 803).
However, constituent A can also be prepared by any other conventional polymeriza~ion method.
Constituent B
Constituent B is an elastomer component which may or may not be present in the novel molding materials. It is a graft polymer which is used in an amount of from û
to 2û, in particular from 1 to 18, parts by we;ght, the r l'` ~
- 4 - O.Z. 0050/3687S
sum of the number of parts by ~eight of a~ A1) and A
being 10U~
This graft copolymer consists of from 10 to 50, preferably from 15 to 45, parts by weight of a mix~ure of one or more v;nyl-aromatic monomers of not more than 12 carbon atoms, and from û.1 to Z5, preferably from 5 to 20, parts by weight of one or more tmeth~acrylates andJor acrylonitrile and/or (meth)acrylic acid and/or maleic an-hydride as a grafted shell, on 50 - 90, in part;cular 60 - ~0, parts by weight of an elastomeric graftin~ base (rubber component).
This rubber component should have a glass transi-tion temperature (according to K~ H. Illers and H. ~reuer, Kolloid-Zeitschrift 176 ~19~1), 110) of below 0C. Exam-ples of suitab`le rubbers are polybutadiene (cf~ GermanLaid-Open Applications DOS 1,420,775 and DOS 1,495~089), copolymers of butadiene and styrene (cf. British Patent 649,166), copolymers of butadiene and styrene and poly-acrylates which may or may not be crosslinked (cf. German Publ;shed Applica~ions DAS 1~138r921, DAS 1,2~4,4~ and DAS 1,260,135), copolymers of acrylates and butadiene (cf. German Published Application DAS 1,238,2~7), elasto-mers of copolymers of acrylates w;th styrene, acrylonit-rile and vinyl ethers and copolymers of ethylene with a non-conjugated diene tEPDM rubber), and hydrogenated sty-rene~butadiene rubber polymers.
The vinyl-aromatic graft monomers are styrene, ~ -methylstyrene and/or styrenes of not more than 12 car-bon atoms which are alkylated in the nucleus; suitable polar monomers are acrylates and methacrylates of alkanols of not more than 8 carbon atoms, acrylonitrile, acrylic acid, methacrylic acid and maleic anhydride, and mixtures of these.
The preparation of the elastomer components B is kno~n per se~ They can be prepared by, for example, poly-merization of a mixture of styrene and acrylic acid or tmeth)acrylates in the presence of a rubber. The graft 5~7 , 5 - O.Z. 0050/36875 copolymerization can be carried out in a conventional manner, in solution, in suspension or, preferably, in emul-sion. It is essential fcr success that the constituents - A and B of component II of the novel rnolding material have a composition, and are matched up with one another in the mixture, so that the absolute amounts of the polar monomers in constituents A and B differ by less than 9.
Component II of the noveL mo~ding materials is preferably obtained by mixing melts of constituents A and B. To do this, constituents A and a, in the form of metts, are mixed at from Z~0 to 260C in an extruder, a roll mill or a kneader, the residence time being a few minutes.
However, it is also possible to m;x solutions of consti-tuent A and of the graft copolymer B, and then to vola-tilize the solvents~
In addition to containing components I and II,the novel molding material can~ if required, contain effective amounts of conventional additives. Examples of _ such additives are pigments, dyes, ~illers, flameproofing agents, such as triaryl phosphates, other compatible poly-mers, antistatic agents, antioxidants and lubricants.
Preparation of the novel molding materials from components I and II
The molding material according to the invention can be prepared from components I and II as described below. However, the molding material is preferably pre-pared from constituents A and 8 and component I, w;th or without other additives, by mixing the so~t and hard con-stituents (of component II) and the polyphenylene ethers.
The preparation is usually carried out in an apparatus which permits homogeneous mixing, eg. a kneader~ an extru-der or a roll mill.
However, it is also possible to prepare the novel molding material by thoroughly mixing solutions of the indi-vidual components and then evaporating the solvent mixture.Combined processes in which solutions and melts are mixed, for example in a devolatilization extruder, have also been ~2~S~i~
- 6 - O.ZO 3050/36375 successfully tested.
The copolymers A1 to A3 listed in Table 1, and where relevant the graft rubbers B1 to a~ stated in Table 2, ~ere used for the preparation of the novel mold-ing materials~ Composition and other properties are shownin the stated tables.
A commercial product based on poly(2,6-dimethyl-1,4-phenylene) ether and having a limiting viscosity of û.5 Cdl/g~ and a notched impact strength of 4 (kJ/m) was used as component I.
SAS copolymers (constituent A) Name Composition in Notched impactVicat parts by weight strengthtemperature S AS (kJ/m2) (C) S = styrene, AS = acrylic acid The copolymers A1 to A3 all had a viscosity number of 70 (ml/g), measured on a 0.5% strength soLution in dimethylformamide at 25C.
Graft copolymers (constituent B) 5 Name Composition of Composition of the Glass transi-the rubber ~%) grafted shell (~) tion tempera-Bu BA S AS AN ture (C) ~1 100 ~ 90 10 -81 B2 ~ 100 90 10 - -46 Bu = butadiene, BA = butyl acrylate~
S = styrene, AS ~ acrylic acid and 5 AN = acrylonitrile.
Triphenyl phosphate was employed as component III.
The parameters stated in the experiments and com-5~ .
The copolymers A1 to A3 listed in Table 1, and where relevant the graft rubbers B1 to a~ stated in Table 2, ~ere used for the preparation of the novel mold-ing materials~ Composition and other properties are shownin the stated tables.
A commercial product based on poly(2,6-dimethyl-1,4-phenylene) ether and having a limiting viscosity of û.5 Cdl/g~ and a notched impact strength of 4 (kJ/m) was used as component I.
SAS copolymers (constituent A) Name Composition in Notched impactVicat parts by weight strengthtemperature S AS (kJ/m2) (C) S = styrene, AS = acrylic acid The copolymers A1 to A3 all had a viscosity number of 70 (ml/g), measured on a 0.5% strength soLution in dimethylformamide at 25C.
Graft copolymers (constituent B) 5 Name Composition of Composition of the Glass transi-the rubber ~%) grafted shell (~) tion tempera-Bu BA S AS AN ture (C) ~1 100 ~ 90 10 -81 B2 ~ 100 90 10 - -46 Bu = butadiene, BA = butyl acrylate~
S = styrene, AS ~ acrylic acid and 5 AN = acrylonitrile.
Triphenyl phosphate was employed as component III.
The parameters stated in the experiments and com-5~ .
- 7 ~ O.Z. 0050/3o87 parative experiments were deterrnined as follows:
1~ The impact strength and notched impact strength in (kJ/m2) were measured according to DIN 53,453, at a material tempera-ture of 250C, on in~ectio~ molded standard small bars.
Z. The modulus of elasticity in (N/mm2) was determined according to DIN 53~457, on injection molded dumbbell test pieces.
3. a) The viscosity numbers, VZ, in (ml/g) were deter-m;ned for a 0.5% strength solut;on ;n d;methylfor-mamide.
b) The limiting viscosity ~ sp/c in ~cm3/g) ~as meas-ured ;n CHCl3 at 30C.
4. The Vicat softening point in C was determined accord-;ng to DIN 53,460, method B, ;n sil;cone oil.
5. The glass trans;t;on temperatures of the rubbers were determined in accordance with K. ~. Illers and H. Breuer, ; Kolloid-Zeitschr;ft, loc~ c;t.
_ 6. The resistance to chemicals was checked and visually assessed in a short-time test with injection molded boxes which were filled with isopropanol and stored for 48 hours.
Rating:
1 = no change 2 = roughening of surface, cloudiness 3 = deformation 5~7
1~ The impact strength and notched impact strength in (kJ/m2) were measured according to DIN 53,453, at a material tempera-ture of 250C, on in~ectio~ molded standard small bars.
Z. The modulus of elasticity in (N/mm2) was determined according to DIN 53~457, on injection molded dumbbell test pieces.
3. a) The viscosity numbers, VZ, in (ml/g) were deter-m;ned for a 0.5% strength solut;on ;n d;methylfor-mamide.
b) The limiting viscosity ~ sp/c in ~cm3/g) ~as meas-ured ;n CHCl3 at 30C.
4. The Vicat softening point in C was determined accord-;ng to DIN 53,460, method B, ;n sil;cone oil.
5. The glass trans;t;on temperatures of the rubbers were determined in accordance with K. ~. Illers and H. Breuer, ; Kolloid-Zeitschr;ft, loc~ c;t.
_ 6. The resistance to chemicals was checked and visually assessed in a short-time test with injection molded boxes which were filled with isopropanol and stored for 48 hours.
Rating:
1 = no change 2 = roughening of surface, cloudiness 3 = deformation 5~7
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Claims (6)
1. A thermoplastic molding material which con-tains a mixture of:
(I) from 95 to 5% by weight of a polyphenylene ether and (II) from 5 to 95% by weight of a copolymer consisting of A1) from 78 to 99 parts by weight of a monovinyl-aromatic compound, A2) from 1 to 12 parts by weight of (meth) acrylic acid and B) from 0 to 20 parts by weight of an elastomer component which has a glass transition temperature ?0°C, the sum of the number of parts by weight being 100.
(I) from 95 to 5% by weight of a polyphenylene ether and (II) from 5 to 95% by weight of a copolymer consisting of A1) from 78 to 99 parts by weight of a monovinyl-aromatic compound, A2) from 1 to 12 parts by weight of (meth) acrylic acid and B) from 0 to 20 parts by weight of an elastomer component which has a glass transition temperature ?0°C, the sum of the number of parts by weight being 100.
2. A thermoplastic molding material as claimed in claim 1, wherein a homopolymer and/or a copolymer of 2,6-dimethylphenol are employed as the polyphenylene ether I.
3. A thermoplastic molding material as claimed in claim 1, wherein the copolymer used as copolymer II
is selected from the group consisting of styrene/acrylic acid, butadiene/styrene/acrylic acid and butyl acrylate/
styrene/acrylic acid copolymers.
is selected from the group consisting of styrene/acrylic acid, butadiene/styrene/acrylic acid and butyl acrylate/
styrene/acrylic acid copolymers.
4. A thermoplastic molding material as claimed in claim 1, wherein components I and II are employed in a ratio of from 30:70 to 70:30.
5. A thermoplastic molding material as claimed in claim 1, which further contains a triaryl phosphate.
6. A thermoplastic molding material as claimed in claim 5, wherein the triarylphosphate is a triphenyl-phosphate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19833346304 DE3346304A1 (en) | 1983-12-22 | 1983-12-22 | THERMOPLASTIC MOLDS |
| DEP3346304.2 | 1983-12-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1244567A true CA1244567A (en) | 1988-11-08 |
Family
ID=6217625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000470881A Expired CA1244567A (en) | 1983-12-22 | 1984-12-21 | Thermoplastic molding materials |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0150388B1 (en) |
| CA (1) | CA1244567A (en) |
| DE (2) | DE3346304A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3444435A1 (en) * | 1984-12-06 | 1986-06-12 | Basf Ag, 6700 Ludwigshafen | THERMOPLASTIC MOLDS |
| DE3711757A1 (en) * | 1987-04-07 | 1988-10-27 | Basf Ag | THERMOPLASTIC MOLDS BASED ON POLYPHENYLENE ETHER |
| DE3711758A1 (en) * | 1987-04-07 | 1988-10-27 | Basf Ag | THERMOPLASTIC MOLDS BASED ON POLYPHENYLENE ETHER |
| EP0290937A3 (en) * | 1987-05-14 | 1991-01-16 | General Electric Company | Improvements of the processability of an antistatic blend of ppe and polystyrene through the addition of a styrene acrylic acid copolymer |
| DE3831482A1 (en) * | 1988-09-16 | 1990-03-22 | Basf Ag | THERMOPLASTIC MOLDS BASED ON MODIFIED POLYPHENYLENE ETHER |
| JPH0395245A (en) * | 1989-05-25 | 1991-04-19 | Dainippon Ink & Chem Inc | Thermoplastic resin composition |
| DE4117106C2 (en) * | 1991-05-25 | 2000-03-09 | Teves Gmbh Alfred | Wiper arm, in particular for motor vehicles |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2751328A1 (en) * | 1976-12-21 | 1978-06-29 | Gen Electric | ULTRASONIC CONNECTABLE POLYPHENYLENE ETHER COMPOSITIONS |
-
1983
- 1983-12-22 DE DE19833346304 patent/DE3346304A1/en not_active Withdrawn
-
1984
- 1984-12-12 EP EP84115272A patent/EP0150388B1/en not_active Expired
- 1984-12-12 DE DE8484115272T patent/DE3469750D1/en not_active Expired
- 1984-12-21 CA CA000470881A patent/CA1244567A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE3469750D1 (en) | 1988-04-14 |
| DE3346304A1 (en) | 1985-07-04 |
| EP0150388B1 (en) | 1988-03-09 |
| EP0150388A1 (en) | 1985-08-07 |
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