CA1188024A - Composition comprising aromatic carbonate polymer, butadiene-styrene copolymer and acrylate- methacrylate copolymer - Google Patents
Composition comprising aromatic carbonate polymer, butadiene-styrene copolymer and acrylate- methacrylate copolymerInfo
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- CA1188024A CA1188024A CA000399992A CA399992A CA1188024A CA 1188024 A CA1188024 A CA 1188024A CA 000399992 A CA000399992 A CA 000399992A CA 399992 A CA399992 A CA 399992A CA 1188024 A CA1188024 A CA 1188024A
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Abstract
COMPOSITION
ABSTRACT OF THE DISCLOSURE
A novel composition which comprises (a) an aromatic carbonate polymer, (b) a butadiene-styrene copolymer, and an (c) acrylate copolymer which is a copolymer of a C1-C5 acrylate and a C1-C5 methacrylate.
ABSTRACT OF THE DISCLOSURE
A novel composition which comprises (a) an aromatic carbonate polymer, (b) a butadiene-styrene copolymer, and an (c) acrylate copolymer which is a copolymer of a C1-C5 acrylate and a C1-C5 methacrylate.
Description
COMPOSI~ION
BACKGROU~D OF T~E INVENTION
High molecular weight aro~atic carbonate polymers (aromatic carbonate polymer3 are well known ~or th~ir toughness as evidenced by their impact stxen~th and ot~er high performance charackeristics. H~wever, because of S their relative di~ficulty in processing as illustrakively exemplified by the temperature ~ecessary to mold art}cles, certain thin wall intricate articles useful in engineexirlg -applications are ver~ difficult if no~ impossible to . econ~mically mold~ Therefore, it would be ad~antageous 10 " to have an ~romatic carbonate pol~mer containing com-posikion which is readily processable but substantially maintains aromatic carbonate polymer toughness character-iskics in thin section tes~ ~xsL~I~. Concurren~ upgrading o~
the toughness characteristics in khick section test syste~s is also desirable.
.. DESCRXPTIO~ OF THE INVENTION
A new ~omposition has been discovered which has these . aroresaid toughness characteristics of a~ aromatiG
: carbonate pol~mer buk is x~adily processable. In accord-ance with the invenkion khere is a composition which com prises ~ 2 '~ HCL-60~L
(a) an aromatic carbonate polymer, (b~ ~ butadiene~styrene copolymer, and an (c) acrylate copolymer which is a copol~er o~ a Cl S acrylate and a Cl ~ methacrylate~
Another aspec~ of the invention is the addition of an acrylate-olefin copolymer to the above composition.
This new quaternary composition has inGreased toughness at low temperatures in comparison to the ternary com-position.
Aromatic carbonate pol~mers in ~he sense of the presenk in~ention are to be unders~ood as homopol~-carbona~es and copolycarbonates and mixtures thereof which have average molecular weights of a~ou~ 8,OGO
to moxe than200,000 preferably of a~out 20,000 to 80,000 lS . and an I.V. of 0~40 to 1.0 dl/g as measurPd in methylene chloride at 25 C. These polycarbonates are deri~ed from dihydric phenols such as, for example, 2,2-bi5(4-hydroxy p~enyl) propane (bisphenol-A), bis(4-hydroxyphenyl) methane, ~,2~bis(4-hydroxy-3-methylphenyl) propane, 4,4-bis(4~hydroxyphenyl) heptane, 2,2-(3,5,3',5'-tetrachloro-4,4'~dihydroxyphenyl) propane, ~,2-C3,5,3' r 5 1 -tetra-bromo-4,4'-dihydroxydiphenyl~ propane, and (3,3'-di.chloro 4,4'-dihydroxydiphenyl) methane. Other dihydric phenols , which are also suitable for use in the preparation of the 25 . above polycarbonates are disclosed in U~S~ Pa~ent Nos~
BACKGROU~D OF T~E INVENTION
High molecular weight aro~atic carbonate polymers (aromatic carbonate polymer3 are well known ~or th~ir toughness as evidenced by their impact stxen~th and ot~er high performance charackeristics. H~wever, because of S their relative di~ficulty in processing as illustrakively exemplified by the temperature ~ecessary to mold art}cles, certain thin wall intricate articles useful in engineexirlg -applications are ver~ difficult if no~ impossible to . econ~mically mold~ Therefore, it would be ad~antageous 10 " to have an ~romatic carbonate pol~mer containing com-posikion which is readily processable but substantially maintains aromatic carbonate polymer toughness character-iskics in thin section tes~ ~xsL~I~. Concurren~ upgrading o~
the toughness characteristics in khick section test syste~s is also desirable.
.. DESCRXPTIO~ OF THE INVENTION
A new ~omposition has been discovered which has these . aroresaid toughness characteristics of a~ aromatiG
: carbonate pol~mer buk is x~adily processable. In accord-ance with the invenkion khere is a composition which com prises ~ 2 '~ HCL-60~L
(a) an aromatic carbonate polymer, (b~ ~ butadiene~styrene copolymer, and an (c) acrylate copolymer which is a copol~er o~ a Cl S acrylate and a Cl ~ methacrylate~
Another aspec~ of the invention is the addition of an acrylate-olefin copolymer to the above composition.
This new quaternary composition has inGreased toughness at low temperatures in comparison to the ternary com-position.
Aromatic carbonate pol~mers in ~he sense of the presenk in~ention are to be unders~ood as homopol~-carbona~es and copolycarbonates and mixtures thereof which have average molecular weights of a~ou~ 8,OGO
to moxe than200,000 preferably of a~out 20,000 to 80,000 lS . and an I.V. of 0~40 to 1.0 dl/g as measurPd in methylene chloride at 25 C. These polycarbonates are deri~ed from dihydric phenols such as, for example, 2,2-bi5(4-hydroxy p~enyl) propane (bisphenol-A), bis(4-hydroxyphenyl) methane, ~,2~bis(4-hydroxy-3-methylphenyl) propane, 4,4-bis(4~hydroxyphenyl) heptane, 2,2-(3,5,3',5'-tetrachloro-4,4'~dihydroxyphenyl) propane, ~,2-C3,5,3' r 5 1 -tetra-bromo-4,4'-dihydroxydiphenyl~ propane, and (3,3'-di.chloro 4,4'-dihydroxydiphenyl) methane. Other dihydric phenols , which are also suitable for use in the preparation of the 25 . above polycarbonates are disclosed in U~S~ Pa~ent Nos~
2,999,835~ 3,028,36S; 3,334,154 and 4,131,575~ Bisphenol- :
A is preferred~
. These aromatic polycarbonates can ~e manufactur2d by ! kno~n processes, such asy for example, by reac~ing a di hydric phenol with a carbonate precursor such as phosgene in accordance with methods set ~orth in t~e above-cited literature and U.S. Patent Nos. 4~,018,750 and 4,123,436l or ~y transesterification processes such as are disclosed in U.S~ Patent No. 3,153,008, as we~l as other processes ~88C~Z~L 8CL-6041 kno-~n to -those skilled in the art~
The aromatic polycarbonates utilized in the present invention also include the polymeric derivati~es of a di-hydric phenol, a dicarboxylic acid, and car~onic acid, or carbonic acid derivatives, for example, phosgene, such as are disclosed in U.S. Patent No. 3,169,131.
It is also possible to employ two or more different dihydric phenols or a copolymer of a dihydric phenol with a glycol or with hydroxy or acid tenminated polyester, or with a dibasic acid in the event a carbonate copolymer or interpolymer rather than a homopolymer is desired for use in the pxeparation of the aromatic po~ycarbonate utilized in the practice of this invention~ Also employed in the , practice of this in~ention can ~e blends of any of the abo~e materials to provide the aromatic polycarbonate.
Branched polycarbonates, such a are de~cribed in U~S. Patent No~ 4,001,184l can also ~e utilized in the practice vf this invention, as can blends of a l; n~r polycar~onate and a branched polycarbonate.
The preferred aromatic carbonate polymer is a homo-polymex deri~ed from bisphenol-A as the dihydric phenol.
The "acxylate" copolymer utilized in the present invention is a copolymer of a Cl-C5 methacrylate and a . Cl-C5 acrylate, wherein the term "Cl-C5" represents both 25 ; saturated and unsaturated, straight or branched ch~ i n~d `; aliphatic hydrocar~on radicals having from 1 to 5 carbon atoms.
Preferred acrylates for use in the above copolymex are methyl acrylate, ethyl acrylate, isobutyl acryla~e, 1,4 butanediol diacrylate, n-butyl acrylat~, and 1,3-bu~ylene diacrylate. Preferred me~hacrylates for use in this copolymer include methyl methacrylate, isobutyl meth-acrylate, 1,3-butylene dimethacrylate, bu~yl methacrylate ~- and ethyl methacrylate.
The acrylate portion of the copolymer, based on the total weight of the copolymer, can range from abou~ 50 to abou~ 85 weiyht percent. The methacrylate portion of ;
8~ acL~6r)~11 --4~
the copolymer can range from about 15 -to about 50 ~eight percent .
The preferred acrylate copolymer for use in ~his invention i.s a copolym~r of n-butyl acrylate and methyl methacrylate in which the weight ratio of the n-butyl acrylate fraction to ~he methyl methacrylate fraction in the copolymer is about 3 to 2.
Suitable acrylate copolymers, as defined above, can be prepared by methods well kno~m to those skilled in the art or can be obtai~ed commercially~ For example, Rohm and Haas' Acryloid~ KM 330 copolymer, which is a copolymer o n-butyl acrylate and methyl me~hacrylate, is suita~le for use in the pre~ent invention~
In the butadiene-styrene copolymer utilized herein, 15- the butadiene portio~ of the copolymer, based on the : total w~ight o the copolymer, can range from about 15 to about 40 weight percent. The sLyrelle portion of the ! copolymer can range from about 60 to a~out 85 weight percent.
In the preferred butadiene-styrene copolymer or use herein, the weight ratio of the styrene fraction to the ; butadiene fra~tion ranges ~rom a~out 2 to 1 to about 3 ~o 1.
Suitable ~utadiene-styrene copolymers, as de~ined above, can be prepared by methods well known to thos2 ~killed in the art or can be obtained commercially. For example, Phillips Petroleum R-Resin~ RR03 BDS pol~mer is suitable for use in the present invention.
The ~ourth pol~mer,.acrylate-olefin copolymer, when present in the composition,is a copolymer o a C2-C5 olefin and a Cl-C5 acrylate. The term "Cl-C5" is as defined above and the term "C2-C5" represents a:s~raight or branched chain aliphatic hydrocaxhon radical havin~ from 2 to 5 carbon atoms. The preferred oleEins are ethylene, propy~
8CL--60~1 lene and isobutylene. Preferred acrylates which ~re utilized in the olefin-acrylate copolymer are ethyl acrylate, n-butyl acrylate, l,3-butylene dia~rylate, rnethyl acrylate, l,4-butanediol diacrylate and isobutyl acrylate.
The acrylate portion of the olefin-acrylate co-polymer, based on the total weight of the copolymer, can range from about 10 to a~out 30 weiyht percent. The ole-fin portion of the copolymer can range from about 70 to about 90 weight percent.
The preferred ole~in-acrylate copolymex for use in ~his invention is an ethylene-ethyl acrylate copolymer, in w~ih the weight ratio of the ethylen~ fraction to ' the ethyl acrylat~ fraction is about 4.5 to 1.
Suitable olefin-acrylate copolymers, as defined above, can be prepared by methods well kn~wn to those skilled in the art or can be obtained c. ~rcially~ For example, Union Carbide7s Bakelite~ DPD-6169 eth~lene ethyl acrylate copolymer i5 suitable for use in the present invention.
2a The amount of the ~utadiene-styrene copolymer presen~
in the composition of the present invention can range from a~out six to about sixty percent, by weight, per hundred parts of the total composition. Preferably, the ~u~adiene-styrene copolymer is present in amounts of from about 25~' ten to about ~orty weight percent of the total composition.
i The amount of the acrylate copolymer present in the com-position can vary from about 2 to about 6 weight percent of the total composition. Pr~ferably, th~ acrylate co-polymer is present in amounts of from about 3 to about 5 wPight percent of the total compositionr ; The amount of the ole~in-ac~ylate copolymer present in ~he composition of the present invention can range from about 0~5 ~o about 2 parts, by weight percent of the total ` composition, preferably about 0.75 to about 1.5 weigh~
percent~ T~e ~emainder o~ the composition is aromatic ~6--carbonate polymer. The term "total composition" is the sum of all the polymeric constituents of the composition.
It is also regarded to be among the ~eatures of this invention to include in the composition of the invention conventlonal addit.ives for purposes such as reinforcing, coloring or stabilizing the composition in conventional amounts.
The compositions of the invention are prepared by mec~anically bl~nd; ng the high molecular weight aromatic polycarbonate ~ith the butadiene-styrene copol~mer and the acrylate polymer by conventional methods. Double or twin screw extrusion is preferred, particularly where additives are add~d to the composition.
EX~MPLES
15 ~ The ~ollowing examples are set forth to illustrate ~he invention and is not to be construed to limit the scope of the invention. All percentages are on a weight basis unless otherwise specifiedO
Eighty-six (86) parts of an aromatic polycarbonate, '~ derived from 2,2-b.is(4-hydroxyphenyl) propane and having an intrinsic viscosity (I.V.~ in the range of from about 0.46 t.o about 0.49 dl/g as determine~ in methylene chlo~ide ', solution at 25C, was mixed with three~3) ~arts o~ a co~
25 ' polymer of n-butyl acrylate and methyl methacrylate (here inafter acrylate copolymer~, said copol~mer having a wQight ratio of n-butyl-acrylate ~o methyl methacrylate of about 3 to 2; one (1) part of an olefin acrylate co-polymer having a weight ratio of ethylene~ethyl acrylate of 4.5:1; ten parts of a butadiene-styrene copolymer . ~hereinafter referred to as BDS~, said copolymer having : a weight xatio of styrene to buta~iene of from abou~ 2 to 1 to abou~ 3 to 1. The in5redients were then ~lended . together by mechanically mixing them in a laboratGry tumbler and the resulting mixture was fed to an extxuder which was --7~
operated at about 255C. The resulting extrudate was comminuted into pellets. The pellets were injection molded at about 250C to 270 C into tes~ specimens of about 5" by 1~2" by 1/4" and 5" by 1/2" by 1/8", the latter dimension being the specimen thickness. Izod impact strengths of these specimens are measured according to the Notched Izod test, AST~ D256, and are set forth in Table I. The superscript refers to the per~ent . ducility at the oot lb. value. The sample labeled CONTROL
10, was a bisphenol-A polyarbonate having an I.V. from a~out O.46 to a~out 0.49 dl/g. No other polymers were present in the control.
EXP~IPLES 2-5 . Further samples of the composition of the invention 15 . were prepared as in Example 1 each cont~in;~g he same kind and quantity of acrylate copol~ner and olefin acrylate copolymer as in Example 1, (3% and 1~ respecti.vely).
However, the amount of BDS was increased i~ each samp~e , to 15~, 20%~ 25%, and 30~ respectively. Each increase 2Q in BDS concentration brought about a concomitant decrease in aromatic polycarbonate concentra~ion. The samples were tested as in Exam~le 1. Belo~ ~re ~.he .~esu~.ts for the impact te~t.
'TABLE 1 EX~MPL~ BDS WT.~ N~ P:~ IZOD, ft-lb/in.
j lJ8 inch 1/4 inch ContrGl -- 14.81 1 6 . 1 10 ' 14.71 11.11 13.41~ ~0 4100 3Q 3 20 ~ 13~41 9 91~0 4 25 ~1v4100 9 1100 11.4 9.7 !
j;
~ O ~ 4 8CL-60~1 The results demonstrate that the impact strength of the new composition is substantially retained in comparison to the control with respect to the 1/8 u samples . The impact strengtlls are su~stantially improved in the 1/4 "
samples. Processability of the novel composition is significantly improved over the co~trol.
A is preferred~
. These aromatic polycarbonates can ~e manufactur2d by ! kno~n processes, such asy for example, by reac~ing a di hydric phenol with a carbonate precursor such as phosgene in accordance with methods set ~orth in t~e above-cited literature and U.S. Patent Nos. 4~,018,750 and 4,123,436l or ~y transesterification processes such as are disclosed in U.S~ Patent No. 3,153,008, as we~l as other processes ~88C~Z~L 8CL-6041 kno-~n to -those skilled in the art~
The aromatic polycarbonates utilized in the present invention also include the polymeric derivati~es of a di-hydric phenol, a dicarboxylic acid, and car~onic acid, or carbonic acid derivatives, for example, phosgene, such as are disclosed in U.S. Patent No. 3,169,131.
It is also possible to employ two or more different dihydric phenols or a copolymer of a dihydric phenol with a glycol or with hydroxy or acid tenminated polyester, or with a dibasic acid in the event a carbonate copolymer or interpolymer rather than a homopolymer is desired for use in the pxeparation of the aromatic po~ycarbonate utilized in the practice of this invention~ Also employed in the , practice of this in~ention can ~e blends of any of the abo~e materials to provide the aromatic polycarbonate.
Branched polycarbonates, such a are de~cribed in U~S. Patent No~ 4,001,184l can also ~e utilized in the practice vf this invention, as can blends of a l; n~r polycar~onate and a branched polycarbonate.
The preferred aromatic carbonate polymer is a homo-polymex deri~ed from bisphenol-A as the dihydric phenol.
The "acxylate" copolymer utilized in the present invention is a copolymer of a Cl-C5 methacrylate and a . Cl-C5 acrylate, wherein the term "Cl-C5" represents both 25 ; saturated and unsaturated, straight or branched ch~ i n~d `; aliphatic hydrocar~on radicals having from 1 to 5 carbon atoms.
Preferred acrylates for use in the above copolymex are methyl acrylate, ethyl acrylate, isobutyl acryla~e, 1,4 butanediol diacrylate, n-butyl acrylat~, and 1,3-bu~ylene diacrylate. Preferred me~hacrylates for use in this copolymer include methyl methacrylate, isobutyl meth-acrylate, 1,3-butylene dimethacrylate, bu~yl methacrylate ~- and ethyl methacrylate.
The acrylate portion of the copolymer, based on the total weight of the copolymer, can range from abou~ 50 to abou~ 85 weiyht percent. The methacrylate portion of ;
8~ acL~6r)~11 --4~
the copolymer can range from about 15 -to about 50 ~eight percent .
The preferred acrylate copolymer for use in ~his invention i.s a copolym~r of n-butyl acrylate and methyl methacrylate in which the weight ratio of the n-butyl acrylate fraction to ~he methyl methacrylate fraction in the copolymer is about 3 to 2.
Suitable acrylate copolymers, as defined above, can be prepared by methods well kno~m to those skilled in the art or can be obtai~ed commercially~ For example, Rohm and Haas' Acryloid~ KM 330 copolymer, which is a copolymer o n-butyl acrylate and methyl me~hacrylate, is suita~le for use in the pre~ent invention~
In the butadiene-styrene copolymer utilized herein, 15- the butadiene portio~ of the copolymer, based on the : total w~ight o the copolymer, can range from about 15 to about 40 weight percent. The sLyrelle portion of the ! copolymer can range from about 60 to a~out 85 weight percent.
In the preferred butadiene-styrene copolymer or use herein, the weight ratio of the styrene fraction to the ; butadiene fra~tion ranges ~rom a~out 2 to 1 to about 3 ~o 1.
Suitable ~utadiene-styrene copolymers, as de~ined above, can be prepared by methods well known to thos2 ~killed in the art or can be obtained commercially. For example, Phillips Petroleum R-Resin~ RR03 BDS pol~mer is suitable for use in the present invention.
The ~ourth pol~mer,.acrylate-olefin copolymer, when present in the composition,is a copolymer o a C2-C5 olefin and a Cl-C5 acrylate. The term "Cl-C5" is as defined above and the term "C2-C5" represents a:s~raight or branched chain aliphatic hydrocaxhon radical havin~ from 2 to 5 carbon atoms. The preferred oleEins are ethylene, propy~
8CL--60~1 lene and isobutylene. Preferred acrylates which ~re utilized in the olefin-acrylate copolymer are ethyl acrylate, n-butyl acrylate, l,3-butylene dia~rylate, rnethyl acrylate, l,4-butanediol diacrylate and isobutyl acrylate.
The acrylate portion of the olefin-acrylate co-polymer, based on the total weight of the copolymer, can range from about 10 to a~out 30 weiyht percent. The ole-fin portion of the copolymer can range from about 70 to about 90 weight percent.
The preferred ole~in-acrylate copolymex for use in ~his invention is an ethylene-ethyl acrylate copolymer, in w~ih the weight ratio of the ethylen~ fraction to ' the ethyl acrylat~ fraction is about 4.5 to 1.
Suitable olefin-acrylate copolymers, as defined above, can be prepared by methods well kn~wn to those skilled in the art or can be obtained c. ~rcially~ For example, Union Carbide7s Bakelite~ DPD-6169 eth~lene ethyl acrylate copolymer i5 suitable for use in the present invention.
2a The amount of the ~utadiene-styrene copolymer presen~
in the composition of the present invention can range from a~out six to about sixty percent, by weight, per hundred parts of the total composition. Preferably, the ~u~adiene-styrene copolymer is present in amounts of from about 25~' ten to about ~orty weight percent of the total composition.
i The amount of the acrylate copolymer present in the com-position can vary from about 2 to about 6 weight percent of the total composition. Pr~ferably, th~ acrylate co-polymer is present in amounts of from about 3 to about 5 wPight percent of the total compositionr ; The amount of the ole~in-ac~ylate copolymer present in ~he composition of the present invention can range from about 0~5 ~o about 2 parts, by weight percent of the total ` composition, preferably about 0.75 to about 1.5 weigh~
percent~ T~e ~emainder o~ the composition is aromatic ~6--carbonate polymer. The term "total composition" is the sum of all the polymeric constituents of the composition.
It is also regarded to be among the ~eatures of this invention to include in the composition of the invention conventlonal addit.ives for purposes such as reinforcing, coloring or stabilizing the composition in conventional amounts.
The compositions of the invention are prepared by mec~anically bl~nd; ng the high molecular weight aromatic polycarbonate ~ith the butadiene-styrene copol~mer and the acrylate polymer by conventional methods. Double or twin screw extrusion is preferred, particularly where additives are add~d to the composition.
EX~MPLES
15 ~ The ~ollowing examples are set forth to illustrate ~he invention and is not to be construed to limit the scope of the invention. All percentages are on a weight basis unless otherwise specifiedO
Eighty-six (86) parts of an aromatic polycarbonate, '~ derived from 2,2-b.is(4-hydroxyphenyl) propane and having an intrinsic viscosity (I.V.~ in the range of from about 0.46 t.o about 0.49 dl/g as determine~ in methylene chlo~ide ', solution at 25C, was mixed with three~3) ~arts o~ a co~
25 ' polymer of n-butyl acrylate and methyl methacrylate (here inafter acrylate copolymer~, said copol~mer having a wQight ratio of n-butyl-acrylate ~o methyl methacrylate of about 3 to 2; one (1) part of an olefin acrylate co-polymer having a weight ratio of ethylene~ethyl acrylate of 4.5:1; ten parts of a butadiene-styrene copolymer . ~hereinafter referred to as BDS~, said copolymer having : a weight xatio of styrene to buta~iene of from abou~ 2 to 1 to abou~ 3 to 1. The in5redients were then ~lended . together by mechanically mixing them in a laboratGry tumbler and the resulting mixture was fed to an extxuder which was --7~
operated at about 255C. The resulting extrudate was comminuted into pellets. The pellets were injection molded at about 250C to 270 C into tes~ specimens of about 5" by 1~2" by 1/4" and 5" by 1/2" by 1/8", the latter dimension being the specimen thickness. Izod impact strengths of these specimens are measured according to the Notched Izod test, AST~ D256, and are set forth in Table I. The superscript refers to the per~ent . ducility at the oot lb. value. The sample labeled CONTROL
10, was a bisphenol-A polyarbonate having an I.V. from a~out O.46 to a~out 0.49 dl/g. No other polymers were present in the control.
EXP~IPLES 2-5 . Further samples of the composition of the invention 15 . were prepared as in Example 1 each cont~in;~g he same kind and quantity of acrylate copol~ner and olefin acrylate copolymer as in Example 1, (3% and 1~ respecti.vely).
However, the amount of BDS was increased i~ each samp~e , to 15~, 20%~ 25%, and 30~ respectively. Each increase 2Q in BDS concentration brought about a concomitant decrease in aromatic polycarbonate concentra~ion. The samples were tested as in Exam~le 1. Belo~ ~re ~.he .~esu~.ts for the impact te~t.
'TABLE 1 EX~MPL~ BDS WT.~ N~ P:~ IZOD, ft-lb/in.
j lJ8 inch 1/4 inch ContrGl -- 14.81 1 6 . 1 10 ' 14.71 11.11 13.41~ ~0 4100 3Q 3 20 ~ 13~41 9 91~0 4 25 ~1v4100 9 1100 11.4 9.7 !
j;
~ O ~ 4 8CL-60~1 The results demonstrate that the impact strength of the new composition is substantially retained in comparison to the control with respect to the 1/8 u samples . The impact strengtlls are su~stantially improved in the 1/4 "
samples. Processability of the novel composition is significantly improved over the co~trol.
Claims (19)
1. A composition which comprises in admixture:
(a) an aromatic carbonate polymer, (b) a butadiene-styrene copolymer, and (c) an acrylate copolymer which is a copolymer of a C1-5 acrylate and a C1-5 methacrylate, said acrylate copolymer being from about two to about six weight percent of the total composition and said butadiene-styrene copolymer being from about six to about sixty weight percent of the total composition.
(a) an aromatic carbonate polymer, (b) a butadiene-styrene copolymer, and (c) an acrylate copolymer which is a copolymer of a C1-5 acrylate and a C1-5 methacrylate, said acrylate copolymer being from about two to about six weight percent of the total composition and said butadiene-styrene copolymer being from about six to about sixty weight percent of the total composition.
2. A composition in accordance with claim 1, wherein the butadiene-styrene copolymer is from about ten to about forty weight percent of the total composition.
3. A composition in accordance with claim 1, wherein said acrylate copolymer is from about three to about five weight percent of the total composition, and said acrylate is from about 50 to about 85 weight percent of said acrylate copolymer.
4. A composition in accordance with claim 2, wherein said acrylate copolymer is from about three to about five weight percent of the total composition, and said acrylate is from about 50 to about 85 weight percent of said acrylate copolymer.
5. A composition in accordance with claim 1, wherein in said acrylate copolymer, said acrylate is selected from the group consisting of 1,4-butanediol diacrylate, isobutyl acrylate, methyl acrylate, ethyl acrylate, n-butyl acrylate and 1,3-butylene diacrylate, and said methacrylate is selected from the group consisting of methyl methacrylate, 1,3-butylene dimethacrylate, isobutyl methacrylate, butyl methacrylate and ethyl methacrylate.
6. A composition in accordance with claim 2, wherein in said acrylate copolymer, said acrylate is selected from the group consisting of 1,4-butanediol diacrylate, isobutyl acrylate, methyl acrylate, ethyl acrylate, n-butyl acrylate and 1,3-butylene diacrylate, and said methacrylate is selected from the group consisting of methyl methacrylate, 1,3-butylene dimethacrylate, isobutyl methacrylate, butyl methacrylate and ethyl methacrylate.
7. A composition in accordance with claim 3, wherein in said acrylate copolymer, said acrylate is selected from the group consisting of l,4-butanediol diacrylate, isobutyl acrylate, methyl acrylate, ethyl acrylate, n-butyl acrylate and 1,3-butylene diacrylate, and said methacrylate is selected from the group consisting of methyl methacrylate, 1,3-butylene dimethacrylate, isobutyl methacrylate, butyl methacrylate and ethyl methacrylate.
8. A composition in accordance with claim 5, wherein said aromatic carbonate polymer is a homopolymer.
9. A composition in accordance with claim 6, wherein said aromatic carbonate polymer is a homopolymer.
10. A composition in accordance with claim 7, wherein said aromatic carbonate polymer is a homopolymer.
11. A composition in accordance with claim 8, wherein said aromatic carbonate polymer is derived from bisphenol-A.
12. A composition in accordance with claim 9, wherein said aromatic carbonate polymer is derived from bisphenol-A.
13. A composition in accordance with claim 10, wherein said aromatic carbonate polymer is derived from bisphenol-A.
14. A composition in accordance with claims 11, 12 or 13 wherein in said acrylate copolymer, said acrylate is n-butyl acrylate, and said methacrylate is methyl methacrylate.
15. A composition in accordance with claim 1, further comprising an olefin-acrylate copolymer which is present in the composition in an amount from about 0.5 to about 2.0 weight percent of the total composition.
16. A composition in accordance with claim 3, further comprising an olefin-acrylate copolymer which is present in the composition in an amount from about 0.5 to about 2.0 weight percent of the total composition.
17. A composition in accordance with claim 15, wherein the olefin content of said olefin-acrylate copolymer is from about 10 to about 30 weight percent.
18. A composition in accordance with claim 16, wherein the olefin content of said olefin-acrylate copolymer is from about 10 to about 30 weight percent.
19. A composition in accordance with claims 17 or 18, wherein said olefin content is selected from the group consisting of ethylene, propylene and isobutylene, and said acrylate is selected from the group consisting of ethyl acrylate, n-butyl acrylate, 1,3-butylene diacrylate, methyl acrylate, l,4-butanediol diacrylate and isobutyl acrylate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000399992A CA1188024A (en) | 1982-03-31 | 1982-03-31 | Composition comprising aromatic carbonate polymer, butadiene-styrene copolymer and acrylate- methacrylate copolymer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000399992A CA1188024A (en) | 1982-03-31 | 1982-03-31 | Composition comprising aromatic carbonate polymer, butadiene-styrene copolymer and acrylate- methacrylate copolymer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1188024A true CA1188024A (en) | 1985-05-28 |
Family
ID=4122458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000399992A Expired CA1188024A (en) | 1982-03-31 | 1982-03-31 | Composition comprising aromatic carbonate polymer, butadiene-styrene copolymer and acrylate- methacrylate copolymer |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1188024A (en) |
-
1982
- 1982-03-31 CA CA000399992A patent/CA1188024A/en not_active Expired
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