CA1266340A - Thermoplastic resin composition - Google Patents
Thermoplastic resin compositionInfo
- Publication number
- CA1266340A CA1266340A CA000518305A CA518305A CA1266340A CA 1266340 A CA1266340 A CA 1266340A CA 000518305 A CA000518305 A CA 000518305A CA 518305 A CA518305 A CA 518305A CA 1266340 A CA1266340 A CA 1266340A
- Authority
- CA
- Canada
- Prior art keywords
- polyester
- resin
- bis
- conjugated diene
- weight
- 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
Links
Abstract
Abstract:
The invention provides a thermoplastic resin composition which comprises (A) a polycarbonate resin, (B) a conjugated diene rubber-reinforced styrene resin and (C) a polyester elastomer, optionally with (D) a saturated polyester. The weight proportion of the components (A), (B) and (C) or (C) + (D) is from 5 - 90 : 5 - 90 : 2 - 60.
The composition has very good chemical resistance and weld strength.
The invention provides a thermoplastic resin composition which comprises (A) a polycarbonate resin, (B) a conjugated diene rubber-reinforced styrene resin and (C) a polyester elastomer, optionally with (D) a saturated polyester. The weight proportion of the components (A), (B) and (C) or (C) + (D) is from 5 - 90 : 5 - 90 : 2 - 60.
The composition has very good chemical resistance and weld strength.
Description
~2~3 ~
Thermoplastic resin composition The present invention relates to thermoplastic resin compositions. More particularly, it relates to thermo-plastic resin compositions having good physical properties, particularly chemical resistance and falling ball impact strength at welded part (hereinafter reerred to as ~Iweld strength").
Polycarbonate resins have good physical properties, particularly high impact resistance and good heat resistance, and are known as "engineering plastics". It is also known to blend various resins with polycarbonate resins in order to enhance the physical properties of polycarbonate resins in various ways. For instance, the incorporati.on of diene rubber graft copolymers, such as ABS resin (acrylonitrile-butadiene-styrene copolymer), MBS resin (methyl methacrylate-butadiene-styrene copolymer) or ABS~ resin (acrylonitrile-butadiene-styrene-methyl ~ethacrylate copolymer), into polycarbonate resins is effective for improving moldability and for reducing the thickness dependency of impact resistance (Japanese Patent Publns. (examined) Nos. 15225/1963, 71/1964J 11496/1967 and 11142/1976). Further, the incorporation o~ ABS resin into polycarbonate resins is effective for improving weld streng~h (Japanese Patent Publn. (unexamined~ No.
99163/1976). However, the resistance of polycarbonates and blended compositions to various chemicals including gasoline, kerosene and brake fluid is so poor that serious ~1 : ., " . , ,:.
':,' ".
.
~ 3 problems occur when these materials are used in practice.
In addition, the weld strength of the materials is still unsatisfactory.
As a result of an extensive study, it has now been found that by blending a conjugated diene rubber-reinforced styrene resin and a polyester elastomer into a polycarbon-ate resin, in specific proportions, a thermoplastic resin composition of enhanced chemical resistance and weld strength can be provided.
According to this invention, there is provided a thermoplastic resin composition which comprises (A) a polycarbonate resin, (B) a conjugated diene rubber-reinforced styrene resin and (C) a polyester elastomer r optionally with a saturated polyester (D), the weight proportion of the components (A), (B) and (C) or (C) ~ (D) being from 5 - 90 : 5 - 90 : 2 - 60.
The polycarbonate resin (A) may be, for example, one or more materials selected from aromatic polycarbonates, aliphatic polycarbonates, aliphatic-aromatic polycarbon-ates, etc. Normally, one or more of polymers and copoly-mers of bisphenols e.g. 2,2-bis(4-hydroxyphenyl)alkanes, bis(4-hydroxyphenyl)ethers, bis(4-hydroxyphenyl)sulfones, bis(4-hydroxyphenyl)sulfides, bist4-hydroxyphenyl)sulfox-ides, etc. are employed. Furthermore, the bisphenols may be optionally substituted with one or more halogens on the benzene ring(s). The preferred compounds are a homopolymer of 2,2-bis(4-hydroxyphenyl)propane (bisphenol A), a copoly-mer of bisphenol A and a halogenated bisphenol A, a homo-polymer of 2,2-bis(3,5 dimethyl-4-hydroxyphenyl)propane, etc., and particularly a homopolymer of bisphenol A.
These polycarbonate resins and their methods of production are described in various textboo~s and literature articles including Encyclopedia of Polymer Science of TechnoLogy, Vol. 10, pages 710 to 764 (1969). The molecular weight of the polycarbonate resin (A) is not limited but, in general, may be within the range of about 10,000 and 100,000, q especially within the range of about 20,000 and 40,000.
~1 . ' ~
. ~. . .
:.: .. ..
The conjugated diene rubber-reinforced styrene resin ~B) which may be used in the invention is obtainable by the polymerization of one or more styrene monomers and optionally other monomers in the presence of one or more conjugated diene rubbers. Examples of the conjugated diene rubbers are polybutadiene, styrene/butadiene copolymer, butadiene-acrylonitrile copolymer, etc. These may be used indiYidually or in combination. The styrene monomers include styrene and its alkylated and/or halogenated derivatives, and specific examples are styrenet alpha-methylstyrene, p-methylstyrene, chlorostyrene, bromo-styrene, etc. Examples of the other monomers are unsatur-ated nitriles (e.g. acrylonitrile, methacrylonitrile, fumaronitrile), acrylic or methacrylic esters (e.g. methyl acrylate, ethyl acrylate, methyl methacrylate, hydroxyethyl acrylate, glycidyl methacrylate), etc. These may also be used individually or in combination. The contents of the conjugated diene rubber(s), the styrene monomer(s~ and, when used, the other monomer(s) which preferably consist of unsaturated nitrile(s) and/or acrylic or methacrylic ester(s), especially alkyl acrylate(s) or methacrylate(s), in the conjugated diene rubber-reinforced styrene resin (B~
are favorably from about 5 to 80 % by weight, from about 10 to 60 % by weight, and from about 10 to 50 % by weight, respectively. The conjugated diene rubber-reinforced styrene resin (B) has a weight average particle size of about 0.05 to 3 microns and a grafting rate (i.e. the per-centage of the total weight of the monomer(s) grafted on the rubber to the weight of the rubber) of about 20 to 150 %.
For the preparation of the conjugated diene rubber-reinforced styrene resin (B), any conventional polymeriza-tion procedure may be adopted such as emulsion polymeriza-tion, suspension polymerization, bulk polymerization, solution polymerization, emulsion-suspension polymerization or bulk-suspension polymerization. During such polymeriza-tion, it is usually to combine the entire amount o~ the monomer~s) with the rubber to form a graft polymer, and ~,`' . .
~' ' . , :.:
.
:
:: ::. ,~
: . .. .
. ~ .
some of the monomers combine with each other to form a homopolymer or copolymer. The polymerization product is thus a mixture comprising a graft polymer, a homopolymer and a copolymer. Accordingly, the conjugated diene S rubber-reinforced styrene resin (B) may be also prepared by admixing a graft polymer having a high content of the rubber with a styrene polymer (e.g. styrene-acrylonitrile copolymer~ alpha-methylstyrene-acrylonitrile copoly~er) previously and separately produced.
The polyester elastomer (C) may be a block polymer which comprises a high melting point crystalline hard segment consisting of an aromatic polyester, and a low glass transition point soft segment consisting of an aliphatic polyether or polyester. The aromatic p~lyester forming the hard segment may be, for example, polyethylene terephthalate, polybutylene terephthalate, polytetra-methylene terephthalate, etc. The aliphatic polyether or polyester forming the soft segment may be, for example, polyether glycols (e.g. polyoxyethylene glycol, polyoxy-methylene glycol, polyoxytetramethylene glycol), polymers of epsilon-caprolactone, etc. The weight propor~ion of the hard segment and the soft segment in the polyester elastomer (C) is usually from about 20 : 80 to 95 : 5.
When desired, a portion of the polyester elastomer (C) may be replaced by the saturated polyester (D). Examples of the saturated polyester (D) are polyethylene tere-phthalate, polytetramethylene terephthalate, polybutylene terephthalate, etc. The amount of the saturated polyester (D) is normally less than 50 ~ by weight, and pre~erably less than 20 % by weight, of the combined amount of the polyester elastomer (C) and the saturated polyester (D)~
As stated above, the thermoplastic resin composition of the invention comprises a polycarbonate resin (A), a conjugated diene rubber-reinforced styrene resin (B) and a polyester elastomer ~C), optionally with a saturated .
'~' ...
polyester (D~, the contents of the components (A), (B) and (C) or (C) ~ (D) being respectively from about 5 to 90 %, from about 5 to 90 % by weight and from about 2 to 60 % by weight; preferably from about 15 to 80 ~ by weight, from about 15 to 80 % by weight and from about 5 to 50 ~ by weight. When the content of the polycarbonate resin (A) is less than about 5 ~ by weight, the heat resistance of the thermoplastic resin composition is not good. When its content is more than about 90 ~ by weight, the process-ability is adversely affected. When the content of the conjugated diene rubber-reinforced styrene resin (B) is less than about 5 ~ by weight, the impact resistance and the processability are inferior. When its content is more than about 90 % by weight, the heat resistance is adversely affected. When the content of the polyester elastomer (C) or of the polyester elastomer (C) and the saturated polyester tD) is less than 2 % by weight/ the chemical resistance and the weld strength are lowered. When their content is more than 60 % by weight, the weld strength is also lowered.
For the preparation of the thermoplastic resin composition of the invention, the essential and optional components may be mixed together in any optional order.
Mixing may be achieved by the use of any conventional mixing apparatus such as a Banbury (trade mark) mixer, a monoaxial extruder or a biaxial extruder. If desired, additivets) such as dyestuffs, pigments, stabilizers, plasticizers, antistatic agents, ultraviolet absorbers, flame retardants, lubricants and fillers may be incorporated into the thermoplastic resin composition.
The thermoplastic resin composition of the invention has various desirable physical properties. Particularly notable is that it has much better heat resistance to various chemicals, especially gasoline, kerosene and brake fluid, and better weld strength than conventional blend products of polycarbonate resins with ~BS resins. Accord-1 ingly, it expands the field of application of polycarbonate ~.~
, . .. . .
, ~.~ '' . ~ , , :: ' resins and may be used for the manufacture of large parts in automobiles.
Practical and presently preferred embodiments of the invention are illustratively shown in the following Examples wherein percentages and part(s) are by weight unless otherwise indicated.
Example Polycarbonate resin "Panlite L-1250" (trade mark, comprising units of the formula:
CH
{~¢~~1~
; manufactured by Teijin Kasei) as the polycarbonate resin (A), ABS resin "Kralastic MV (trade mark, manufactured by Sumitomo Naugatuck) or ultra heat-resistant ABS resin "Kuralastic KU-600" (trade mark, manufactured by Sumitomo Naugatuck) as the conjugated diene rubber-reinforced styrene resin (B), ester-ether type elastomer "Pelprene P40H" (trade mark, manufactured by Toyobo) or ester-ester type elastomer "Perprene S-3000" (trade mark, manufactured by Toyobo) as the polyester elastomer and polybutylene terephthalate "Tufpet N-1000" (trade mark, manufactured by Toyobo) as the saturated polyester (D) were mixed together by the aid of a ~ixer. The resultant mixture r having the mixing proportions as shown in Table 1, was kneaded well and extruded by the aid oE a monoaxial screw extruder to ~5 give a pelletized sample. From the thus obtained pellet-ized sample, a test piece was prepared by injection molding, and the test piece was subjected to measurement of various physical constants.
The test results are shown in Table 1.
3 ~
C:
o U~oa~ .-1 r-~ I_ C o o ~ o ~ o o ~
_ _ oV o CO ~ ~ o o C~
~D O ~n n . . . co ~
~DI ~ I ~ I O~U~ ~ O
_ _ _ ,,,VV .
a~o o~_ U~ o o o . . . Ci~ ~o 1 U'l ~ o o _ _ _ ~
.~ oo~ o . COO~O ~
O ~ ~ 0~1 0 ~ O
~ _ . _~
ooo 1~0 In O r- ,t o ~rI In I n I o ~ o ~ o I ~ ____ U~
co~a~o ~1 ~
. ~ ~ r I Ul I I OOU~ O o __. .. ,.. __.__ _ .__ ___ .
Ul . u~
, . ~1 O O ~ ~ ~ O CO O
o ~ U~ I o o o ~ u) ~ o . ~
_. ___. _ _ ~ .~ .
,_ rlR~ P' ~ ~ ~ 0-~
. a~ ~ I c ~ h ~1--O
~. h o~ 111 U 0~
I ~ I h hQ~ --- O O .Y ~3 ~ Ei ` ~--u~ ) t1` X
.C h ~) ~1 a a~ ~ ~ ~ h U U ~ ~: O .--Q ~ ic ~ ~ I o I o ~ ~J ~ ~: o o o--~ ~ o ~ rl h Q) ~ h ~ ~ ~ 0 ~1 ~d , ~
u~ o ~ ~ ~ ~ ~ ~ I y ,1 a~ h ~ ,C ~ ~ U o U ~ O t ~ o ~
h 1~) 0 ~ ~ ~ ~ ~ h u) G ~ ~ o h ~ ,1 0 c) a. O r1 ~ ,1 C) ~ Id ~ a) H ~ O O ~ ~>
U--~ ~1 Ul -1 0 O
n~ ~ ~ ~: ~ ~ h U ~,1 ,1 ,1 u~ a) ~ ~0 ~
E~ ' u~ O O a) ~ -- ~ p,-~ O
q ~ V ~~ a) ~ ~ ~ U o V rl ~i~) ,~ ~ ~ O
. p~ o ~ ~ ~ 2J o ~ c~ ~ ~ ~ ~
O o u~ u ~ ~ ~ h U O ~ z ~ _ ~ ~ O ~ r~
_ O O U O ~ ~_ _ _ _ _ _ _ _,, _ _ _ _ _ _ :
~t' . ' ~t `
.
... ~, ~ . .
. ` ~.
Notes: 1) The tes~ piece (20 mm x 150 mm x 3 mm) was prepared by press molding of the pellets of the thermo-plastic resin composition. Onto one surface of the test piece, gasoline, kerosene or brake fluid was applied, and the test piece was stressed and allowed to stand with the treated surface upward. Then, the distanc:e between the maximum deflection point and the crack producing point, the distance between the fixed edge and the maximum deflection point and the maximum deflection amount were measured, and the critical strain was calculated.
Thermoplastic resin composition The present invention relates to thermoplastic resin compositions. More particularly, it relates to thermo-plastic resin compositions having good physical properties, particularly chemical resistance and falling ball impact strength at welded part (hereinafter reerred to as ~Iweld strength").
Polycarbonate resins have good physical properties, particularly high impact resistance and good heat resistance, and are known as "engineering plastics". It is also known to blend various resins with polycarbonate resins in order to enhance the physical properties of polycarbonate resins in various ways. For instance, the incorporati.on of diene rubber graft copolymers, such as ABS resin (acrylonitrile-butadiene-styrene copolymer), MBS resin (methyl methacrylate-butadiene-styrene copolymer) or ABS~ resin (acrylonitrile-butadiene-styrene-methyl ~ethacrylate copolymer), into polycarbonate resins is effective for improving moldability and for reducing the thickness dependency of impact resistance (Japanese Patent Publns. (examined) Nos. 15225/1963, 71/1964J 11496/1967 and 11142/1976). Further, the incorporation o~ ABS resin into polycarbonate resins is effective for improving weld streng~h (Japanese Patent Publn. (unexamined~ No.
99163/1976). However, the resistance of polycarbonates and blended compositions to various chemicals including gasoline, kerosene and brake fluid is so poor that serious ~1 : ., " . , ,:.
':,' ".
.
~ 3 problems occur when these materials are used in practice.
In addition, the weld strength of the materials is still unsatisfactory.
As a result of an extensive study, it has now been found that by blending a conjugated diene rubber-reinforced styrene resin and a polyester elastomer into a polycarbon-ate resin, in specific proportions, a thermoplastic resin composition of enhanced chemical resistance and weld strength can be provided.
According to this invention, there is provided a thermoplastic resin composition which comprises (A) a polycarbonate resin, (B) a conjugated diene rubber-reinforced styrene resin and (C) a polyester elastomer r optionally with a saturated polyester (D), the weight proportion of the components (A), (B) and (C) or (C) ~ (D) being from 5 - 90 : 5 - 90 : 2 - 60.
The polycarbonate resin (A) may be, for example, one or more materials selected from aromatic polycarbonates, aliphatic polycarbonates, aliphatic-aromatic polycarbon-ates, etc. Normally, one or more of polymers and copoly-mers of bisphenols e.g. 2,2-bis(4-hydroxyphenyl)alkanes, bis(4-hydroxyphenyl)ethers, bis(4-hydroxyphenyl)sulfones, bis(4-hydroxyphenyl)sulfides, bist4-hydroxyphenyl)sulfox-ides, etc. are employed. Furthermore, the bisphenols may be optionally substituted with one or more halogens on the benzene ring(s). The preferred compounds are a homopolymer of 2,2-bis(4-hydroxyphenyl)propane (bisphenol A), a copoly-mer of bisphenol A and a halogenated bisphenol A, a homo-polymer of 2,2-bis(3,5 dimethyl-4-hydroxyphenyl)propane, etc., and particularly a homopolymer of bisphenol A.
These polycarbonate resins and their methods of production are described in various textboo~s and literature articles including Encyclopedia of Polymer Science of TechnoLogy, Vol. 10, pages 710 to 764 (1969). The molecular weight of the polycarbonate resin (A) is not limited but, in general, may be within the range of about 10,000 and 100,000, q especially within the range of about 20,000 and 40,000.
~1 . ' ~
. ~. . .
:.: .. ..
The conjugated diene rubber-reinforced styrene resin ~B) which may be used in the invention is obtainable by the polymerization of one or more styrene monomers and optionally other monomers in the presence of one or more conjugated diene rubbers. Examples of the conjugated diene rubbers are polybutadiene, styrene/butadiene copolymer, butadiene-acrylonitrile copolymer, etc. These may be used indiYidually or in combination. The styrene monomers include styrene and its alkylated and/or halogenated derivatives, and specific examples are styrenet alpha-methylstyrene, p-methylstyrene, chlorostyrene, bromo-styrene, etc. Examples of the other monomers are unsatur-ated nitriles (e.g. acrylonitrile, methacrylonitrile, fumaronitrile), acrylic or methacrylic esters (e.g. methyl acrylate, ethyl acrylate, methyl methacrylate, hydroxyethyl acrylate, glycidyl methacrylate), etc. These may also be used individually or in combination. The contents of the conjugated diene rubber(s), the styrene monomer(s~ and, when used, the other monomer(s) which preferably consist of unsaturated nitrile(s) and/or acrylic or methacrylic ester(s), especially alkyl acrylate(s) or methacrylate(s), in the conjugated diene rubber-reinforced styrene resin (B~
are favorably from about 5 to 80 % by weight, from about 10 to 60 % by weight, and from about 10 to 50 % by weight, respectively. The conjugated diene rubber-reinforced styrene resin (B) has a weight average particle size of about 0.05 to 3 microns and a grafting rate (i.e. the per-centage of the total weight of the monomer(s) grafted on the rubber to the weight of the rubber) of about 20 to 150 %.
For the preparation of the conjugated diene rubber-reinforced styrene resin (B), any conventional polymeriza-tion procedure may be adopted such as emulsion polymeriza-tion, suspension polymerization, bulk polymerization, solution polymerization, emulsion-suspension polymerization or bulk-suspension polymerization. During such polymeriza-tion, it is usually to combine the entire amount o~ the monomer~s) with the rubber to form a graft polymer, and ~,`' . .
~' ' . , :.:
.
:
:: ::. ,~
: . .. .
. ~ .
some of the monomers combine with each other to form a homopolymer or copolymer. The polymerization product is thus a mixture comprising a graft polymer, a homopolymer and a copolymer. Accordingly, the conjugated diene S rubber-reinforced styrene resin (B) may be also prepared by admixing a graft polymer having a high content of the rubber with a styrene polymer (e.g. styrene-acrylonitrile copolymer~ alpha-methylstyrene-acrylonitrile copoly~er) previously and separately produced.
The polyester elastomer (C) may be a block polymer which comprises a high melting point crystalline hard segment consisting of an aromatic polyester, and a low glass transition point soft segment consisting of an aliphatic polyether or polyester. The aromatic p~lyester forming the hard segment may be, for example, polyethylene terephthalate, polybutylene terephthalate, polytetra-methylene terephthalate, etc. The aliphatic polyether or polyester forming the soft segment may be, for example, polyether glycols (e.g. polyoxyethylene glycol, polyoxy-methylene glycol, polyoxytetramethylene glycol), polymers of epsilon-caprolactone, etc. The weight propor~ion of the hard segment and the soft segment in the polyester elastomer (C) is usually from about 20 : 80 to 95 : 5.
When desired, a portion of the polyester elastomer (C) may be replaced by the saturated polyester (D). Examples of the saturated polyester (D) are polyethylene tere-phthalate, polytetramethylene terephthalate, polybutylene terephthalate, etc. The amount of the saturated polyester (D) is normally less than 50 ~ by weight, and pre~erably less than 20 % by weight, of the combined amount of the polyester elastomer (C) and the saturated polyester (D)~
As stated above, the thermoplastic resin composition of the invention comprises a polycarbonate resin (A), a conjugated diene rubber-reinforced styrene resin (B) and a polyester elastomer ~C), optionally with a saturated .
'~' ...
polyester (D~, the contents of the components (A), (B) and (C) or (C) ~ (D) being respectively from about 5 to 90 %, from about 5 to 90 % by weight and from about 2 to 60 % by weight; preferably from about 15 to 80 ~ by weight, from about 15 to 80 % by weight and from about 5 to 50 ~ by weight. When the content of the polycarbonate resin (A) is less than about 5 ~ by weight, the heat resistance of the thermoplastic resin composition is not good. When its content is more than about 90 ~ by weight, the process-ability is adversely affected. When the content of the conjugated diene rubber-reinforced styrene resin (B) is less than about 5 ~ by weight, the impact resistance and the processability are inferior. When its content is more than about 90 % by weight, the heat resistance is adversely affected. When the content of the polyester elastomer (C) or of the polyester elastomer (C) and the saturated polyester tD) is less than 2 % by weight/ the chemical resistance and the weld strength are lowered. When their content is more than 60 % by weight, the weld strength is also lowered.
For the preparation of the thermoplastic resin composition of the invention, the essential and optional components may be mixed together in any optional order.
Mixing may be achieved by the use of any conventional mixing apparatus such as a Banbury (trade mark) mixer, a monoaxial extruder or a biaxial extruder. If desired, additivets) such as dyestuffs, pigments, stabilizers, plasticizers, antistatic agents, ultraviolet absorbers, flame retardants, lubricants and fillers may be incorporated into the thermoplastic resin composition.
The thermoplastic resin composition of the invention has various desirable physical properties. Particularly notable is that it has much better heat resistance to various chemicals, especially gasoline, kerosene and brake fluid, and better weld strength than conventional blend products of polycarbonate resins with ~BS resins. Accord-1 ingly, it expands the field of application of polycarbonate ~.~
, . .. . .
, ~.~ '' . ~ , , :: ' resins and may be used for the manufacture of large parts in automobiles.
Practical and presently preferred embodiments of the invention are illustratively shown in the following Examples wherein percentages and part(s) are by weight unless otherwise indicated.
Example Polycarbonate resin "Panlite L-1250" (trade mark, comprising units of the formula:
CH
{~¢~~1~
; manufactured by Teijin Kasei) as the polycarbonate resin (A), ABS resin "Kralastic MV (trade mark, manufactured by Sumitomo Naugatuck) or ultra heat-resistant ABS resin "Kuralastic KU-600" (trade mark, manufactured by Sumitomo Naugatuck) as the conjugated diene rubber-reinforced styrene resin (B), ester-ether type elastomer "Pelprene P40H" (trade mark, manufactured by Toyobo) or ester-ester type elastomer "Perprene S-3000" (trade mark, manufactured by Toyobo) as the polyester elastomer and polybutylene terephthalate "Tufpet N-1000" (trade mark, manufactured by Toyobo) as the saturated polyester (D) were mixed together by the aid of a ~ixer. The resultant mixture r having the mixing proportions as shown in Table 1, was kneaded well and extruded by the aid oE a monoaxial screw extruder to ~5 give a pelletized sample. From the thus obtained pellet-ized sample, a test piece was prepared by injection molding, and the test piece was subjected to measurement of various physical constants.
The test results are shown in Table 1.
3 ~
C:
o U~oa~ .-1 r-~ I_ C o o ~ o ~ o o ~
_ _ oV o CO ~ ~ o o C~
~D O ~n n . . . co ~
~DI ~ I ~ I O~U~ ~ O
_ _ _ ,,,VV .
a~o o~_ U~ o o o . . . Ci~ ~o 1 U'l ~ o o _ _ _ ~
.~ oo~ o . COO~O ~
O ~ ~ 0~1 0 ~ O
~ _ . _~
ooo 1~0 In O r- ,t o ~rI In I n I o ~ o ~ o I ~ ____ U~
co~a~o ~1 ~
. ~ ~ r I Ul I I OOU~ O o __. .. ,.. __.__ _ .__ ___ .
Ul . u~
, . ~1 O O ~ ~ ~ O CO O
o ~ U~ I o o o ~ u) ~ o . ~
_. ___. _ _ ~ .~ .
,_ rlR~ P' ~ ~ ~ 0-~
. a~ ~ I c ~ h ~1--O
~. h o~ 111 U 0~
I ~ I h hQ~ --- O O .Y ~3 ~ Ei ` ~--u~ ) t1` X
.C h ~) ~1 a a~ ~ ~ ~ h U U ~ ~: O .--Q ~ ic ~ ~ I o I o ~ ~J ~ ~: o o o--~ ~ o ~ rl h Q) ~ h ~ ~ ~ 0 ~1 ~d , ~
u~ o ~ ~ ~ ~ ~ ~ I y ,1 a~ h ~ ,C ~ ~ U o U ~ O t ~ o ~
h 1~) 0 ~ ~ ~ ~ ~ h u) G ~ ~ o h ~ ,1 0 c) a. O r1 ~ ,1 C) ~ Id ~ a) H ~ O O ~ ~>
U--~ ~1 Ul -1 0 O
n~ ~ ~ ~: ~ ~ h U ~,1 ,1 ,1 u~ a) ~ ~0 ~
E~ ' u~ O O a) ~ -- ~ p,-~ O
q ~ V ~~ a) ~ ~ ~ U o V rl ~i~) ,~ ~ ~ O
. p~ o ~ ~ ~ 2J o ~ c~ ~ ~ ~ ~
O o u~ u ~ ~ ~ h U O ~ z ~ _ ~ ~ O ~ r~
_ O O U O ~ ~_ _ _ _ _ _ _ _,, _ _ _ _ _ _ :
~t' . ' ~t `
.
... ~, ~ . .
. ` ~.
Notes: 1) The tes~ piece (20 mm x 150 mm x 3 mm) was prepared by press molding of the pellets of the thermo-plastic resin composition. Onto one surface of the test piece, gasoline, kerosene or brake fluid was applied, and the test piece was stressed and allowed to stand with the treated surface upward. Then, the distanc:e between the maximum deflection point and the crack producing point, the distance between the fixed edge and the maximum deflection point and the maximum deflection amount were measured, and the critical strain was calculated.
2) The thermoplastic resin composition in a molten state (260C) was injected from two gates (2.5 mm x 2.0 mm each) having a gate distance of 100 mm to make a test piece (150 mm long, 150 mm wide, 3 mm high). The test piece was placed on a cylinder of 120 mm in inner diameter, 126 mm in outer diameter and 80 mm in height. A steel ball o~ 1 kg was dropped onto the central part (the weld part) of the test piece in a room kept at -30C, and the maximum energy (kg.cm) which could be absorbed by the test piece without breaking was measured.
'~' `'~ ''1
'~' `'~ ''1
Claims (5)
1. A thermoplastic resin composition which comprises (A) a polycarbonate resin, (B) a conjugated diene rubber-reinforcing styrene resin and (C) a polyester elastomer, optionally with a saturated polyester (D), the weight proportion of the components (A), (B) and (C) or (C) + (D) being from 5 - 90 : 5 - 90 : 2 - 60.
2. A composition according to claim 1, wherein the satura-ted polyester (D) is not present.
3. A composition according to claim 1, wherein the satura-ted polyester (D) is present in an amount of less than 50 % by weight of the combined amount of the polyester elastomer (C) and the saturated polyester (D).
4. A composition according to claim 1, wherein the poly--carbonate resin (A) is a polymer or copolymer of one or more of 2,2-bis(4-hydroxyphenyl)alkanes, bis(4-hydroxy-phenyl)ethers, bis(4-hydroxyphenyl)sulfones, bis(4-hydroxyphenyl)sulfides and bis(4-hydroxyphenyl)sulfoxides, and their halogenated derivatives on the benzene rings.
5. A composition according to claim 1, wherein the conjugated diene rubber-reinforced styrene resin (B) comprises a conjugated diene rubber and a styrene monomer or a mixture thereof with one or more other monomers grafted thereon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000518305A CA1266340A (en) | 1986-09-16 | 1986-09-16 | Thermoplastic resin composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000518305A CA1266340A (en) | 1986-09-16 | 1986-09-16 | Thermoplastic resin composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1266340A true CA1266340A (en) | 1990-02-27 |
Family
ID=4133947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000518305A Expired CA1266340A (en) | 1986-09-16 | 1986-09-16 | Thermoplastic resin composition |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1266340A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050853C (en) * | 1997-09-10 | 2000-03-29 | 中国科学院广州化学研究所 | Modification method of aliphatic polycarbonate butadienestyrene rubber |
-
1986
- 1986-09-16 CA CA000518305A patent/CA1266340A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050853C (en) * | 1997-09-10 | 2000-03-29 | 中国科学院广州化学研究所 | Modification method of aliphatic polycarbonate butadienestyrene rubber |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4444950A (en) | Thermoplastic resin composition | |
| US4218544A (en) | Blends of polycarbonate with rubber and monovinylidene aromatic copolymers | |
| EP1010725A2 (en) | Thermoplastic polycarbonate composition | |
| US4490506A (en) | Thermoplastic resin composition | |
| US5104934A (en) | Polymer blends of polycarbonate, PETG and ABS | |
| KR100680338B1 (en) | Thermoplastic polycarbonate alloy with low gloss | |
| US4367310A (en) | Blends of polycarbonate with rubber and monovinylidene aromatic copolymers | |
| US5128409A (en) | Polycarbonate/graft ABS blends with improved weld line strength | |
| WO1998051737A1 (en) | Aromatic polycarbonate resin composition for molding | |
| JPS5859258A (en) | Thermoplastic resin composition | |
| JPS58129043A (en) | Thermoplastic resin composition | |
| US5061754A (en) | Low gloss polycarbonate/abs blends | |
| US4855357A (en) | Low-temperature impact blends of polycarbonate, graft copolymer and rigid copolymer | |
| CA1266340A (en) | Thermoplastic resin composition | |
| EP0489912A1 (en) | Thermoplastic resin composition | |
| KR100639043B1 (en) | Thermoplastic polycarbonate alloy with low gloss and resistant scratch using cross-linked organic micro-particles | |
| EP0000146A1 (en) | Blends of phenolphthalein polycarbonates with rubber-modified monovinylidene aromatic copolymers | |
| JPH0376743A (en) | Thermoplastic resin composition | |
| US5610235A (en) | High gloss graft copolymer blend containing emulsion graft copolymer and bulk graft copolymer | |
| JPS59219362A (en) | Thermoplastic resin composition | |
| CA2030834A1 (en) | Polymer blends of polycarbonate, petg and abs | |
| US3978158A (en) | Thermoplastic resin compositions | |
| US4439582A (en) | Blends of aromatic polycarbonate with random copolymers of a monovinylidene aromatic and an unsaturated carboxylic acid | |
| JP3478445B2 (en) | Polycarbonate resin composition | |
| CA1165037A (en) | Blends of aromatic polycarbonate with random copolymers of a monovinylidene aromatic and an unsaturated carboxylic acid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |