JPH0374267B2 - - Google Patents
Info
- Publication number
- JPH0374267B2 JPH0374267B2 JP59011070A JP1107084A JPH0374267B2 JP H0374267 B2 JPH0374267 B2 JP H0374267B2 JP 59011070 A JP59011070 A JP 59011070A JP 1107084 A JP1107084 A JP 1107084A JP H0374267 B2 JPH0374267 B2 JP H0374267B2
- Authority
- JP
- Japan
- Prior art keywords
- polycarbonate resin
- weight
- resin composition
- fluidity
- polyvinyl
- 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 - Lifetime
Links
- 229920005668 polycarbonate resin Polymers 0.000 claims description 27
- 239000004431 polycarbonate resin Substances 0.000 claims description 27
- 229920002554 vinyl polymer Polymers 0.000 claims description 12
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 claims description 11
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 9
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 12
- 238000000034 method Methods 0.000 description 9
- 238000002156 mixing Methods 0.000 description 8
- 239000011342 resin composition Substances 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 5
- -1 3,5-dibromo-4- hydroxyphenyl Chemical group 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 238000006116 polymerization reaction Methods 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 description 3
- 239000003086 colorant Substances 0.000 description 3
- 239000000975 dye Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000049 pigment Substances 0.000 description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 description 3
- 239000002243 precursor Substances 0.000 description 3
- VPWNQTHUCYMVMZ-UHFFFAOYSA-N 4,4'-sulfonyldiphenol Chemical class C1=CC(O)=CC=C1S(=O)(=O)C1=CC=C(O)C=C1 VPWNQTHUCYMVMZ-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- SMWDFEZZVXVKRB-UHFFFAOYSA-N Quinoline Chemical compound N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 150000001299 aldehydes Chemical class 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 2
- 230000006208 butylation Effects 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000011256 inorganic filler Substances 0.000 description 2
- 229910003475 inorganic filler Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 150000002989 phenols Chemical class 0.000 description 2
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- FWLHAQYOFMQTHQ-UHFFFAOYSA-N 2-N-[8-[[8-(4-aminoanilino)-10-phenylphenazin-10-ium-2-yl]amino]-10-phenylphenazin-10-ium-2-yl]-8-N,10-diphenylphenazin-10-ium-2,8-diamine hydroxy-oxido-dioxochromium Chemical compound O[Cr]([O-])(=O)=O.O[Cr]([O-])(=O)=O.O[Cr]([O-])(=O)=O.Nc1ccc(Nc2ccc3nc4ccc(Nc5ccc6nc7ccc(Nc8ccc9nc%10ccc(Nc%11ccccc%11)cc%10[n+](-c%10ccccc%10)c9c8)cc7[n+](-c7ccccc7)c6c5)cc4[n+](-c4ccccc4)c3c2)cc1 FWLHAQYOFMQTHQ-UHFFFAOYSA-N 0.000 description 1
- VWGKEVWFBOUAND-UHFFFAOYSA-N 4,4'-thiodiphenol Chemical group C1=CC(O)=CC=C1SC1=CC=C(O)C=C1 VWGKEVWFBOUAND-UHFFFAOYSA-N 0.000 description 1
- NZGQHKSLKRFZFL-UHFFFAOYSA-N 4-(4-hydroxyphenoxy)phenol Chemical compound C1=CC(O)=CC=C1OC1=CC=C(O)C=C1 NZGQHKSLKRFZFL-UHFFFAOYSA-N 0.000 description 1
- RQCACQIALULDSK-UHFFFAOYSA-N 4-(4-hydroxyphenyl)sulfinylphenol Chemical compound C1=CC(O)=CC=C1S(=O)C1=CC=C(O)C=C1 RQCACQIALULDSK-UHFFFAOYSA-N 0.000 description 1
- 229930185605 Bisphenol Natural products 0.000 description 1
- 239000004605 External Lubricant Substances 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- YGYAWVDWMABLBF-UHFFFAOYSA-N Phosgene Chemical compound ClC(Cl)=O YGYAWVDWMABLBF-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- NRCMAYZCPIVABH-UHFFFAOYSA-N Quinacridone Chemical compound N1C2=CC=CC=C2C(=O)C2=C1C=C1C(=O)C3=CC=CC=C3NC1=C2 NRCMAYZCPIVABH-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000006359 acetalization reaction Methods 0.000 description 1
- 239000003377 acid catalyst Substances 0.000 description 1
- 229920000800 acrylic rubber Polymers 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 description 1
- 150000004056 anthraquinones Chemical class 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 150000001491 aromatic compounds Chemical class 0.000 description 1
- 125000000751 azo group Chemical group [*]N=N[*] 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- HFACYLZERDEVSX-UHFFFAOYSA-N benzidine Chemical compound C1=CC(N)=CC=C1C1=CC=C(N)C=C1 HFACYLZERDEVSX-UHFFFAOYSA-N 0.000 description 1
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 description 1
- 239000012965 benzophenone Substances 0.000 description 1
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 1
- 239000012964 benzotriazole Substances 0.000 description 1
- VCCBEIPGXKNHFW-UHFFFAOYSA-N biphenyl-4,4'-diol Chemical group C1=CC(O)=CC=C1C1=CC=C(O)C=C1 VCCBEIPGXKNHFW-UHFFFAOYSA-N 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 239000001030 cadmium pigment Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 150000001924 cycloalkanes Chemical class 0.000 description 1
- ROORDVPLFPIABK-UHFFFAOYSA-N diphenyl carbonate Chemical compound C=1C=CC=CC=1OC(=O)OC1=CC=CC=C1 ROORDVPLFPIABK-UHFFFAOYSA-N 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 125000004464 hydroxyphenyl group Chemical group 0.000 description 1
- 235000019239 indanthrene blue RS Nutrition 0.000 description 1
- UHOKSCJSTAHBSO-UHFFFAOYSA-N indanthrone blue Chemical compound C1=CC=C2C(=O)C3=CC=C4NC5=C6C(=O)C7=CC=CC=C7C(=O)C6=CC=C5NC4=C3C(=O)C2=C1 UHOKSCJSTAHBSO-UHFFFAOYSA-N 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 1
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920000767 polyaniline Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- JOUDBUYBGJYFFP-FOCLMDBBSA-N thioindigo Chemical compound S\1C2=CC=CC=C2C(=O)C/1=C1/C(=O)C2=CC=CC=C2S1 JOUDBUYBGJYFFP-FOCLMDBBSA-N 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000005809 transesterification reaction Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Description
〔発明の技術分野〕
本発明は、ポリカーボネート樹脂本来の機械的
特性を損なうことなく成形時の流動性、耐薬品性
に優れたポリカーボネート樹脂組成物に関する。
〔発明の技術的背景とその問題点〕
ポリカーボネート樹脂は、その成形品の機械的
特性、耐熱性に優れているので、いわゆるエンジ
ニアリングプラスチツクとして広い分野で使用さ
れている。
しかしながら、この樹脂は溶融粘度が高いので
成形加工時の流動性に劣り、また耐薬品性にも劣
るという難点を有している。
この点を改善するために、従来から種々の方法
が提案されているが、しかし、いずれの方法もポ
リカーボネート樹脂が本来有している優れた機械
的特性、耐熱性を損うことなく流動性、耐薬品性
を高めるという点では満足すべきものではなかつ
た。
〔発明の目的〕
本発明は、ポリカーボネート樹脂の優れた諸特
性を低下させることなく、流動性の著しく高い、
すなわち著しく成形性に富むと同時に耐薬品性に
優れたポリカーボネート樹脂組成物の提供を目的
とする。
〔発明の概要〕
本発明者らは上記目的を達成すべく鋭意研究を
重ねた結果、ポリカーボネート樹脂に後述するポ
リビニルアセタールを所定量配合すると上記目的
の達成が可能であるとの知見を得、本発明のポリ
カーボネート樹脂組成物を開発するに到つた。す
なわち、本発明のポリカーボネート樹脂組成物
は、ポリカーボネート樹脂35重量％以上90重量％
未満とポリビニルアセタール10重量％を超え65重
量以下とから成ることを特徴とする。
本発明組成物のベースとなるポリカーボネート
樹脂は、溶剤法、すなわち、塩化メチレン等の溶
剤中で、公知の酸受容体、分子量調整剤の存在
下、二価フエノールとホスゲンのようなカーボネ
ート前駆体との反応によつて製造される樹脂、又
は、二価フエノールとジフエニルカーボネートと
のカーボネート前駆体とのエステル交換反応によ
つて製造される樹脂である。
ここで、使用し得る二価フエノールとしてはビ
スフエノール類が好ましく、とくに、２，２−ビ
ス（４−ヒドロキシフエニル）プロパン（ビスフ
エノールＡ）が好ましい。また、ビスフエノール
Ａの一部又は全部を他の二価フエノールで置換し
たものであつてもよい。ビスフエノールＡ以外の
二価フエノールとしては、例えば、ハイドロキノ
ン、４，4′−ジヒドロキシジフエニル、ビス（４
−ヒドロキシフエニル）アルカン、ビス（４−ヒ
ドロキシフエニル）シクロアルカン、ビス（４−
ヒドロキシフエニル）スルフイド、ビス（４−ヒ
ドロキシフエニル）スルホン、ビス（４−ヒドロ
キシフエニル）スルホキシド、ビス（４−ヒドロ
キシフエニル）エーテルのような化合物又はビス
（３，５−ジブロモ−４−ヒドロキシフエニル）
プロパンのようなハロゲン化ビスフエノール類を
あげることができる。これら二価フエノールのホ
モポリマー又は２種以上のコポリマー若しくはブ
レンド物であつてもよい。更には、多官能性芳香
族化合物を二価フエノール及び／又はカーボネー
ト前駆体と反応させた熱可塑性ランダム分岐ポリ
カーボネートであつてもよい。
用いるポリカーボネート樹脂は、機械的強度及
び成形性の点からして、その粘度平均分子量は
10000〜100000のものが好ましく、とくに20000〜
40000のものは好適である。
本発明の樹脂組成物は、上記したポリカーボネ
ート樹脂にポリビニルアセタールを10重量％を超
え65重量％以下配合して構成される。
ポリビニルアセタールの配合量が10重量％以下
（ポリカーボネート樹脂が90重量％以上）の場合
には、得られる樹脂組成物の流動性、耐薬品性に
おる改善効果は不充分であり、また、ポリビニル
アセタールの配合量が65重量％を超えると（ポリ
カーボネート樹脂が35重量％より少ない）場合に
は、樹脂組成物の耐熱性が低下して不適である。
ポリビニルアセタールの配合量は20〜50重量％以
下（ポリカーボネート樹脂の配合量は50〜97重量
％）であることが好ましい。
用いるポリビニルアセタールは、ポリビニルア
ルコールを塩酸や硫酸のような酸触媒の存在下で
アルデヒドと反応させてポリビニルアルコールの
水酸基の一部又は全部をアセタール化したもので
ある。製造法としては、酸によつて例えばポリ酢
酸ビニルを加水分解する際にその初期段階でアル
デヒドを加え、加水分解とアセタール化を同時に
進行させるという一段法；又は、ポリビニルアル
コールを一度分離したのちこれをアセタール化す
るという二段法があげられる。
ポリビニルアセタールのうち本発明に用いて好
適なものは、重合度100〜1000、好ましくは150〜
800で、ホルマール化度70モル％以上、好ましく
は78〜90モル％のポリビニルホルマール；又は、
重合度200〜2500、好ましくは300〜2000で、ブチ
ル化度50モル％以上、好ましくは60〜80モル％の
ポリビニルブチラールである。
本発明の樹脂組成物は、各成分の所定量をドラ
ムタンブラー、ヘンシエルミキサー、スーパーミ
キサーなどを用いてプリブレンドした後、得られ
た混合物をバンバリーミキサー、単軸若しくは多
軸混練機などを用いて250〜300℃の温度で溶融混
練して容易に製造することができる。
なお、このときに、必要に応じて下記するよう
な態様で無機充填材、着色剤、その他各種の添加
剤又はその他の合成樹脂、エラストマーなどを配
合することもできる。
まず、ポリカーボネート樹脂の機械的強度、耐
久性又は増量を目的として配合される無機充填材
には、ガラス繊維、ガラスビース、ガラスフレー
ク、炭酸カルシウム、硫酸カルシウム、タルク、
クレー、マイカなどをあげることができる。とく
に、各種のガラス充填材は有用である。これら充
填材は、ポリカーボネート樹脂100重量部に対し
１〜50重量部配合すればよい。配合量が50重量部
を超えると得られた樹脂組成物の流動性は極端に
低下してしまう。
着色剤は、ポリカーボネート樹脂に色彩を付与
するための顔料、染料であつて、顔料としては、
フタロシアニン系、キナクリドン系、ベンジジン
系などの有機顔料；チタン、鉛、亜鉛、カドミウ
ムのような金属の酸化物、硫酸化物、硫酸塩、フ
アーネス法若しくは衝撃法で製造したカーボンブ
ラツク、アニリンブラツクなどの無機顔料をあげ
ことができる。また染料としてはアゾ系、アント
ラキノン系、チオインジゴ系、キノリン系、イン
ダンスレン系のようなものがあげられる。これら
着色剤の配合料は、ポリカーボネート樹脂100重
量部に対し0.05〜5.0重量部である。配合量が5.0
重量部を超えると得られた樹脂組成物の耐衝撃性
が低下してしまう。
その他の添加剤としては、例えば亜リン酸エス
テル系、リン酸エステル系の酸化防止剤；例えば
ベンゾトリアゾール系、ベンゾフエノン系の紫外
線吸収剤；例えば脂肪族カルボン酸エステル系、
パラフイン系の外部滑剤；常用の難燃化剤、離型
剤、帯電防止剤などがあげられる。その他の合成
樹脂としては、ポリエチレン、ポリプロピレン、
ポリスチレン、AS樹脂、ABS樹脂、ポリエステ
ル、ポリメチルメタクリレートなどの各樹脂をあ
げることができる。また、エラストマーとして
は、IIR、SBR、EPR、アクリル系エラストマー
などをあげることができる。
〔発明の実施例〕
実施例１〜７及び比較例１〜６
ポリカーボネート樹脂として、Ａ：粘度平均分
子量22500のビスフエノールＡ型ポリカーボネー
ト樹脂、Ｂ：粘度平均分子量29000のビスフエノ
ールＡ型ポリカーボネート樹脂を用意した。
ポリビニルアセタールとして、Ａ：重合度350、
ホルマール化度80モル％のポリビニルホルマー
ル、Ｂ：重合度1000、ブチル化度70モル％のポリ
ビニルブチラールを用意した。
これら各成分を表に示した割合で配合したのち
混練し射出成形に供した。各樹脂組成物の流動
性、すなわち成形性、耐薬品性及び熱変形温度を
下記の仕様で測定した。
流動性：JIS−K6719で規定する引張特性測定用
ダンベルの射出成形（成形温度280℃）におけ
る最小充填圧のゲージ圧（Kg／cm2）で判定。こ
の値が低いものは流動性に富む。ただし、実圧
力はケージ圧の11倍値であつた。
耐薬品性：中辻他、色材、39巻、455頁（1966年）
に記載の1/4楕円法による臨界歪で示した。そ
のときの使用薬液：出光興産(株)製の赤アポロガ
ソリン。
熱変形温度：ASTM D648で規定する方法に準
拠して測定。
以上の結果を一括して表に示した。
[Technical Field of the Invention] The present invention relates to a polycarbonate resin composition that has excellent fluidity during molding and chemical resistance without impairing the mechanical properties inherent to the polycarbonate resin. [Technical background of the invention and its problems] Polycarbonate resin is used in a wide range of fields as a so-called engineering plastic because its molded products have excellent mechanical properties and heat resistance. However, this resin has the drawbacks of poor fluidity during molding and chemical resistance due to its high melt viscosity. Various methods have been proposed to improve this point, but none of these methods improves fluidity and heat resistance without sacrificing the excellent mechanical properties and heat resistance inherent to polycarbonate resin. It was not satisfactory in terms of improving chemical resistance. [Objective of the Invention] The present invention provides polycarbonate resin with extremely high fluidity without reducing its excellent properties.
That is, the object of the present invention is to provide a polycarbonate resin composition that is extremely moldable and has excellent chemical resistance. [Summary of the Invention] As a result of extensive research to achieve the above object, the present inventors found that the above object could be achieved by blending a predetermined amount of polyvinyl acetal, which will be described later, into polycarbonate resin. We have now developed a polycarbonate resin composition of the invention. That is, the polycarbonate resin composition of the present invention contains 35% by weight or more and 90% by weight of polycarbonate resin.
polyvinyl acetal and more than 10% by weight and less than 65% by weight of polyvinyl acetal. The polycarbonate resin, which is the base of the composition of the present invention, is produced by a solvent method, that is, in a solvent such as methylene chloride, in the presence of a known acid acceptor and a molecular weight regulator, with a dihydric phenol and a carbonate precursor such as phosgene. or a resin produced by the transesterification reaction of dihydric phenol and diphenyl carbonate with a carbonate precursor. Here, as the dihydric phenol that can be used, bisphenols are preferable, and 2,2-bis(4-hydroxyphenyl)propane (bisphenol A) is particularly preferable. Further, part or all of bisphenol A may be replaced with another dihydric phenol. Examples of divalent phenols other than bisphenol A include hydroquinone, 4,4'-dihydroxydiphenyl, bis(4
-hydroxyphenyl)alkane, bis(4-hydroxyphenyl)cycloalkane, bis(4-
Compounds such as hydroxyphenyl) sulfide, bis(4-hydroxyphenyl) sulfone, bis(4-hydroxyphenyl) sulfoxide, bis(4-hydroxyphenyl) ether or bis(3,5-dibromo-4- hydroxyphenyl)
Examples include halogenated bisphenols such as propane. It may be a homopolymer or a copolymer or a blend of two or more of these dihydric phenols. Furthermore, it may be a thermoplastic randomly branched polycarbonate obtained by reacting a polyfunctional aromatic compound with a dihydric phenol and/or a carbonate precursor. In terms of mechanical strength and moldability, the polycarbonate resin used has a viscosity average molecular weight of
10000~100000 is preferable, especially 20000~
40000 is suitable. The resin composition of the present invention is composed of the above-mentioned polycarbonate resin and more than 10% by weight and 65% by weight or less of polyvinyl acetal. If the blending amount of polyvinyl acetal is 10% by weight or less (polycarbonate resin is 90% by weight or more), the effect of improving the fluidity and chemical resistance of the resulting resin composition will be insufficient, and the amount of polyvinyl acetal If the blending amount exceeds 65% by weight (polycarbonate resin is less than 35% by weight), the heat resistance of the resin composition will decrease, making it unsuitable.
The blending amount of polyvinyl acetal is preferably 20 to 50% by weight or less (the blending amount of polycarbonate resin is 50 to 97% by weight). The polyvinyl acetal used is one in which part or all of the hydroxyl groups of polyvinyl alcohol are acetalized by reacting polyvinyl alcohol with an aldehyde in the presence of an acid catalyst such as hydrochloric acid or sulfuric acid. The production method is a one-step method in which, for example, when polyvinyl acetate is hydrolyzed with an acid, aldehyde is added in the initial stage to allow hydrolysis and acetalization to proceed simultaneously; or, after the polyvinyl alcohol is once separated, There is a two-step method to acetalize. Among polyvinyl acetals, those suitable for use in the present invention have a degree of polymerization of 100 to 1000, preferably 150 to 1000.
800 and a formalization degree of 70 mol% or more, preferably 78 to 90 mol%; or,
It is polyvinyl butyral with a degree of polymerization of 200 to 2,500, preferably 300 to 2,000, and a degree of butylation of 50 mol% or more, preferably 60 to 80 mol%. The resin composition of the present invention is prepared by pre-blending predetermined amounts of each component using a drum tumbler, Henschel mixer, super mixer, etc., and then blending the resulting mixture using a Banbury mixer, single-screw or multi-screw kneader, etc. It can be easily produced by melt-kneading at a temperature of 250 to 300°C. At this time, inorganic fillers, colorants, various other additives, or other synthetic resins, elastomers, etc. can also be blended in the manner described below, if necessary. First, inorganic fillers added for the purpose of increasing the mechanical strength, durability, or weight of polycarbonate resin include glass fiber, glass beads, glass flakes, calcium carbonate, calcium sulfate, talc,
You can give clay, mica, etc. In particular, various glass fillers are useful. These fillers may be blended in an amount of 1 to 50 parts by weight per 100 parts by weight of the polycarbonate resin. If the blending amount exceeds 50 parts by weight, the fluidity of the resulting resin composition will be extremely reduced. Colorants are pigments and dyes for imparting color to polycarbonate resin, and pigments include:
Organic pigments such as phthalocyanine, quinacridone, and benzidine; metal oxides, sulfates, and sulfates such as titanium, lead, zinc, and cadmium, and inorganic pigments such as carbon black and aniline black produced by the Furness method or impact method. I can give you pigment. Examples of dyes include azo, anthraquinone, thioindigo, quinoline, and indanthrene dyes. The amount of these colorants added is 0.05 to 5.0 parts by weight per 100 parts by weight of the polycarbonate resin. The amount is 5.0
If the amount exceeds 1 part by weight, the impact resistance of the resulting resin composition will decrease. Other additives include, for example, phosphite-based and phosphate-based antioxidants; for example, benzotriazole-based and benzophenone-based ultraviolet absorbers; for example, aliphatic carboxylic ester-based antioxidants;
Paraffin-based external lubricants; commonly used flame retardants, mold release agents, antistatic agents, etc. Other synthetic resins include polyethylene, polypropylene,
Examples of resins include polystyrene, AS resin, ABS resin, polyester, and polymethyl methacrylate. Further, examples of the elastomer include IIR, SBR, EPR, and acrylic elastomer. [Examples of the Invention] Examples 1 to 7 and Comparative Examples 1 to 6 As polycarbonate resins, A: bisphenol A type polycarbonate resin with a viscosity average molecular weight of 22,500, and B: bisphenol A type polycarbonate resin with a viscosity average molecular weight of 29,000. did. As polyvinyl acetal, A: degree of polymerization 350,
Polyvinyl formal with a degree of formalization of 80 mol%, and B: polyvinyl butyral with a degree of polymerization of 1000 and a degree of butylation of 70 mol% were prepared. These components were mixed in the proportions shown in the table, kneaded, and subjected to injection molding. The fluidity, that is, moldability, chemical resistance, and heat distortion temperature of each resin composition was measured according to the following specifications. Fluidity: Determined by the minimum filling pressure gauge pressure (Kg/cm 2 ) during injection molding of dumbbells for measuring tensile properties (molding temperature 280°C) specified in JIS-K6719. Materials with a low value have high fluidity. However, the actual pressure was 11 times the cage pressure. Chemical resistance: Nakatsuji et al., Color materials, vol. 39, p. 455 (1966)
The critical strain is expressed by the 1/4 ellipse method described in . The chemical solution used at that time: Red Apollo gasoline manufactured by Idemitsu Kosan Co., Ltd. Heat distortion temperature: Measured according to the method specified by ASTM D648. The above results are summarized in the table.
【表】
〔発明の効果〕
以上の結果から明らかなように、本発明のポリ
カーボネート樹脂組成物は成形時の流動性に優
れ、得られた成形品もポリカーボネート樹脂が本
来もつている機械的特性、耐熱性を低下させるこ
とがなく、家電製品、光学機器、自動車部品等を
製造するための射出成形用、射出圧縮成形用の素
材料として有用であり、その工業的価値は大き
い。
更に、本発明の樹脂組成物は、着色性、塗装
性、メツキ性などの特性にも優れている。[Table] [Effects of the Invention] As is clear from the above results, the polycarbonate resin composition of the present invention has excellent fluidity during molding, and the obtained molded products also have the mechanical properties originally possessed by polycarbonate resin. It does not reduce heat resistance and is useful as a material for injection molding and injection compression molding for manufacturing home appliances, optical equipment, automobile parts, etc., and has great industrial value. Furthermore, the resin composition of the present invention has excellent properties such as colorability, paintability, and plating performance.
Claims (1)
未満とポリビニルアセタール10重量％を超え65重
量％以下とから成ることを特徴とするポリカーボ
ネート樹脂組成物。1 Polycarbonate resin 35% by weight or more and 90% by weight
A polycarbonate resin composition characterized by comprising less than 10% by weight and less than 65% by weight of polyvinyl acetal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1107084A JPS60156750A (en) | 1984-01-26 | 1984-01-26 | Polycarbonate resin composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1107084A JPS60156750A (en) | 1984-01-26 | 1984-01-26 | Polycarbonate resin composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60156750A JPS60156750A (en) | 1985-08-16 |
| JPH0374267B2 true JPH0374267B2 (en) | 1991-11-26 |
Family
ID=11767716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1107084A Granted JPS60156750A (en) | 1984-01-26 | 1984-01-26 | Polycarbonate resin composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60156750A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1639041A1 (en) * | 2003-06-28 | 2006-03-29 | E.I. Dupont De Nemours And Company | Polyvinylbutyral compositions and blends having enhanced surface properties and articles made therefrom |
| CN102786788B (en) * | 2012-08-10 | 2014-03-26 | 中山大学 | Degradable poly-methyl ethylene carbonate base composite material and preparation method thereof |
| CN114213831A (en) * | 2021-12-24 | 2022-03-22 | 江南大学 | Polycarbonate alloy, preparation method and application |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54127956A (en) * | 1978-03-24 | 1979-10-04 | Rohm & Haas | Hydrolysis protection agent for linear saturated aromatic polyester * composed of thermoplastic saturated aromatic polyester and water catching polymer |
-
1984
- 1984-01-26 JP JP1107084A patent/JPS60156750A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54127956A (en) * | 1978-03-24 | 1979-10-04 | Rohm & Haas | Hydrolysis protection agent for linear saturated aromatic polyester * composed of thermoplastic saturated aromatic polyester and water catching polymer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60156750A (en) | 1985-08-16 |
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