JPH11181202A - Impact resistant polystyrene resin composition - Google Patents
Impact resistant polystyrene resin compositionInfo
- Publication number
- JPH11181202A JPH11181202A JP35071497A JP35071497A JPH11181202A JP H11181202 A JPH11181202 A JP H11181202A JP 35071497 A JP35071497 A JP 35071497A JP 35071497 A JP35071497 A JP 35071497A JP H11181202 A JPH11181202 A JP H11181202A
- Authority
- JP
- Japan
- Prior art keywords
- polybutadiene
- weight
- polystyrene resin
- molecular weight
- impact
- 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.)
- Pending
Links
- 229920005990 polystyrene resin Polymers 0.000 title claims abstract description 40
- 239000011342 resin composition Substances 0.000 title claims abstract description 7
- 229920002857 polybutadiene Polymers 0.000 claims abstract description 93
- 239000005062 Polybutadiene Substances 0.000 claims abstract description 49
- 239000000203 mixture Substances 0.000 claims abstract description 48
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000005227 gel permeation chromatography Methods 0.000 claims description 8
- 229920001971 elastomer Polymers 0.000 abstract description 11
- 239000005060 rubber Substances 0.000 abstract description 11
- 238000006116 polymerization reaction Methods 0.000 description 31
- 238000004519 manufacturing process Methods 0.000 description 17
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 14
- 239000000243 solution Substances 0.000 description 13
- 238000002156 mixing Methods 0.000 description 10
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 9
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 9
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 7
- 238000004458 analytical method Methods 0.000 description 7
- 230000000704 physical effect Effects 0.000 description 7
- 239000003054 catalyst Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- YNLAOSYQHBDIKW-UHFFFAOYSA-M diethylaluminium chloride Chemical compound CC[Al](Cl)CC YNLAOSYQHBDIKW-UHFFFAOYSA-M 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- RRKODOZNUZCUBN-CCAGOZQPSA-N (1z,3z)-cycloocta-1,3-diene Chemical compound C1CC\C=C/C=C\C1 RRKODOZNUZCUBN-CCAGOZQPSA-N 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- NBICYCZLCAMSBG-UHFFFAOYSA-L [Co+2].CCCCCC=CC([O-])=O.CCCCCC=CC([O-])=O Chemical compound [Co+2].CCCCCC=CC([O-])=O.CCCCCC=CC([O-])=O NBICYCZLCAMSBG-UHFFFAOYSA-L 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- XCPQQZKNXRQMIQ-UHFFFAOYSA-L nickel(2+);oct-2-enoate Chemical compound [Ni+2].CCCCCC=CC([O-])=O.CCCCCC=CC([O-])=O XCPQQZKNXRQMIQ-UHFFFAOYSA-L 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 description 2
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- -1 aluminum compound Chemical class 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 1
- SBYMUDUGTIKLCR-UHFFFAOYSA-N 2-chloroethenylbenzene Chemical compound ClC=CC1=CC=CC=C1 SBYMUDUGTIKLCR-UHFFFAOYSA-N 0.000 description 1
- 239000004342 Benzoyl peroxide Substances 0.000 description 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 238000004566 IR spectroscopy Methods 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000011954 Ziegler–Natta catalyst Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229920000800 acrylic rubber Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- 238000012662 bulk polymerization Methods 0.000 description 1
- 238000011088 calibration curve Methods 0.000 description 1
- 239000012986 chain transfer agent Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 150000001869 cobalt compounds Chemical class 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000004807 desolvation Methods 0.000 description 1
- 150000001993 dienes Chemical class 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- WNAHIZMDSQCWRP-UHFFFAOYSA-N dodecane-1-thiol Chemical compound CCCCCCCCCCCCS WNAHIZMDSQCWRP-UHFFFAOYSA-N 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 150000002816 nickel compounds Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 238000010557 suspension polymerization reaction Methods 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 229920001897 terpolymer Polymers 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 150000003623 transition metal compounds Chemical class 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Graft Or Block Polymers (AREA)
Abstract
(57)【要約】
【課題】 特定のポリブタジエン組成物をゴム成分とし
て用いることにより低温使用時の耐衝撃性が更に優れ、
かつ、艶消し特性が優れているポリスチレン樹脂を提供
する。
【解決手段】 （Ａ）トルエン中30℃で測定した固有粘
度［η］が 3.0〜7.0 で且つシス構造含有率が80％以上
のポリブタジエンを主成分とする高分子量ポリブタジエ
ン65〜30重量％と、（Ｂ）トルエン中30℃で測定した固
有粘度［η］が 0.1〜0.5 のポリブタジエンを主成分と
する低分子量ポリブタジエン35〜70重量％とからなるポ
リブタジエンゴム組成物 2〜25重量％とポリスチレン系
樹脂98〜75重量％とからなる耐衝撃性ポリスチレン系樹
脂組成物。(57) [Summary] [PROBLEMS] By using a specific polybutadiene composition as a rubber component, impact resistance at low temperature use is further improved,
Also, a polystyrene resin having excellent matting properties is provided. (A) 65 to 30% by weight of a high molecular weight polybutadiene having a polybutadiene as a main component having an intrinsic viscosity [η] of 3.0 to 7.0 and a cis structure content of 80% or more in toluene at 30 ° C; (B) 2 to 25% by weight of a polybutadiene rubber composition comprising 35 to 70% by weight of a low molecular weight polybutadiene containing polybutadiene having an intrinsic viscosity [η] of 0.1 to 0.5 as measured in toluene at 30 ° C. and a polystyrene resin An impact-resistant polystyrene resin composition comprising 98 to 75% by weight.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、特定のポリブタジ
エンゴム組成物をゴム成分として用いた耐衝撃性ポリス
チレン系樹脂組成物に関する。TECHNICAL FIELD The present invention relates to an impact-resistant polystyrene resin composition using a specific polybutadiene rubber composition as a rubber component.
【０００２】[0002]
【従来の技術】ポリブタジエンゴムは、種々の特性に優
れた合成ゴムであり、耐衝撃性ポリスチレン系樹脂のゴ
ム成分として用いられている。従来から、耐衝撃性ポリ
スチレン系樹脂の耐衝撃性や表面光沢を改良するための
技術が開示されている。2. Description of the Related Art Polybutadiene rubber is a synthetic rubber excellent in various properties and is used as a rubber component of impact-resistant polystyrene resin. BACKGROUND ART Conventionally, techniques for improving the impact resistance and surface gloss of an impact-resistant polystyrene resin have been disclosed.
【０００３】例えば、特開昭62-179542 号公報には、固
有粘度［η］が 3.0〜6.0 で且つシス-1,4- 構造のポリ
ブタジエンを主成分とする高分子量ポリブタジエン70〜
30重量％と、固有粘度［η］が 0.6〜1.4 で且つシス-
1,4- 構造のポリブタジエンを主成分とする低分子量ポ
リブタジエン30〜70重量％とからなるポリブタジエンゴ
ム組成物が開示されている。For example, Japanese Patent Application Laid-Open No. 62-179542 discloses a high molecular weight polybutadiene having an intrinsic viscosity [η] of 3.0 to 6.0 and a polybutadiene having a cis-1,4-structure as a main component.
30% by weight, intrinsic viscosity [η] of 0.6-1.4 and cis-
A polybutadiene rubber composition comprising 30 to 70% by weight of a low molecular weight polybutadiene having a 1,4-structure polybutadiene as a main component is disclosed.
【０００４】また、特開平4-100810号公報には、固有粘
度［η］が 3.0〜7.0 で且つシス-1,4- 構造率が80％以
上のポリブタジエンを主成分とする高分子量ポリブタジ
エン80〜30重量％と、固有粘度［η］が 0.5〜1.4 で且
つシス-1,4- 構造率が80％未満のポリブタジエンを主成
分とする低分子量ポリブタジエン30〜70重量％とからな
るポリブタジエンゴム組成物が開示されている。Japanese Patent Application Laid-Open No. Hei 4-100810 discloses a high molecular weight polybutadiene having an intrinsic viscosity [η] of 3.0 to 7.0 and a polybutadiene having a cis-1,4-structure ratio of 80% or more as a main component. A polybutadiene rubber composition comprising 30% by weight and 30 to 70% by weight of a low molecular weight polybutadiene containing polybutadiene as a main component and having an intrinsic viscosity [η] of 0.5 to 1.4 and a cis-1,4-structure ratio of less than 80%. Is disclosed.
【０００５】これらのポリブタジエンゴム組成物を用い
た耐衝撃性ポリスチレン樹脂は、耐衝撃性や光沢などが
改善されているが、用途によっては低温使用時の耐衝撃
性がより優れていることが要求されたり、また、樹脂表
面がキラキラするものよりも艶消しが好まれる場合もあ
る。[0005] Impact-resistant polystyrene resins using these polybutadiene rubber compositions have improved impact resistance and gloss, but depending on the application, they are required to have better impact resistance when used at low temperatures. In some cases, matting may be preferred over glittering resin surfaces.
【０００６】[0006]
【発明の解決しようとする課題】本発明は、特定のポリ
ブタジエン組成物をゴム成分として用いることにより低
温使用時の耐衝撃性が更に優れ、かつ、艶消し特性が優
れているポリスチレン樹脂を提供することを目的とす
る。SUMMARY OF THE INVENTION The present invention provides a polystyrene resin which is more excellent in impact resistance at low temperature use and excellent in matting properties by using a specific polybutadiene composition as a rubber component. The purpose is to:
【０００７】[0007]
【課題解決のための手段】本発明は、（Ａ）トルエン中
30℃で測定した固有粘度［η］が 3.0〜7.0 で且つシス
-1,4- 構造含有率が80％以上のポリブタジエンを主成分
とする高分子量ポリブタジエン65〜30重量％と、（Ｂ）
トルエン中30℃で測定した固有粘度［η］が 0.1〜0.5
のポリブタジエンを主成分とする低分子量ポリブタジエ
ン35〜70重量％とからなるポリブタジエンゴム組成物 2
〜25重量％とポリスチレン系樹脂98〜75重量％とからな
る耐衝撃性ポリスチレン系樹脂組成物に関する。According to the present invention, there is provided (A)
When the intrinsic viscosity [η] measured at 30 ° C is
(B) 65 to 30% by weight of a high-molecular-weight polybutadiene having a -1,4-structure content of 80% or more as a main component;
0.1-0.5 intrinsic viscosity [η] measured at 30 ° C in toluene
Polybutadiene rubber composition comprising 35 to 70% by weight of a low molecular weight polybutadiene containing polybutadiene as a main component 2
To 25% by weight and 98 to 75% by weight of a polystyrene resin.
【０００８】また、本発明は、（Ａ）ゲルパーミエーシ
ョンクロマトグラフ（ＧＰＣ）で測定した重量平均分子
量（Ｍｗ）が70万〜 200万で且つシス-1,4- 構造含有率
が80％以上のポリブタジエンを主成分とする高分子量ポ
リブタジエン65〜30重量％と、（Ｂ）ゲルパーミエーシ
ョンクロマトグラフ（ＧＰＣ）で測定した重量平均分子
量（Ｍｗ）が 1万〜 7万のポリブタジエンを主成分とす
る低分子量ポリブタジエン35〜70重量％とからなるポリ
ブタジエンゴム組成物 2〜25重量％とポリスチレン系樹
脂98〜75重量％とからなる耐衝撃性ポリスチレン系樹脂
組成物に関する。Further, the present invention relates to (A) a gel permeation chromatograph (GPC) having a weight average molecular weight (Mw) of 700,000 to 2,000,000 and a cis-1,4-structure content of 80% or more. 65 to 30% by weight of a high molecular weight polybutadiene containing polybutadiene as a main component and (B) a polybutadiene having a weight average molecular weight (Mw) of 10,000 to 70,000 as measured by gel permeation chromatography (GPC). The present invention relates to an impact-resistant polystyrene resin composition comprising 2 to 25% by weight of a polybutadiene rubber composition comprising 35 to 70% by weight of low molecular weight polybutadiene and 98 to 75% by weight of a polystyrene resin.
【０００９】[0009]
【発明の実施の形態】ポリブタジエンゴム組成物の
（Ａ）成分のトルエン中30℃で測定した固有粘度［η］
は 3.0〜7.0 であり、好ましくは 3.5〜6.0 である。ま
た、（Ａ）成分のゲルパーミエーションクロマトグラフ
（ＧＰＣ）で測定した重量平均分子量（Ｍｗ）は70万〜
200万であり、好ましくは75万〜 150万である。DESCRIPTION OF THE PREFERRED EMBODIMENTS Intrinsic viscosity [η] of the component (A) of the polybutadiene rubber composition measured in toluene at 30 ° C.
Is from 3.0 to 7.0, preferably from 3.5 to 6.0. The weight average molecular weight (Mw) of the component (A) measured by gel permeation chromatography (GPC) is 700,000-
It is 2 million, preferably 750,000 to 1.5 million.
【００１０】［η］または重量平均分子量（Ｍｗ）が上
記範囲より大きいと低温使用時の耐衝撃性が改善されな
い。［η］または重量平均分子量（Ｍｗ）が上記範囲よ
り小さいと艶消し効果が小さくなる。If [η] or the weight average molecular weight (Mw) is larger than the above range, the impact resistance at low temperature use will not be improved. When [η] or the weight average molecular weight (Mw) is smaller than the above range, the matting effect is reduced.
【００１１】ポリブタジエンゴム組成物の（Ａ）成分の
シス-1,4- 構造含有率は80％以上であり、好ましくは85
％以上であり、例えば、85〜98％である。シス-1,4- 構
造含有率が上記範囲より小さいと、耐衝撃性の改良効果
が小さい。The cis-1,4-structure content of the component (A) of the polybutadiene rubber composition is 80% or more, preferably 85% or more.
%, For example, 85 to 98%. When the cis-1,4-structure content is smaller than the above range, the effect of improving impact resistance is small.
【００１２】ポリブタジエンゴム組成物の（Ｂ）成分の
トルエン中30℃で測定した固有粘度［η］は 0.1〜0.5
であり、好ましくは 0.1〜0.4 である。また、（Ｂ）成
分はゲルパーミエーションクロマトグラフ（ＧＰＣ）で
測定した重量平均分子量（Ｍｗ）が 1万〜 7万であり、
好ましくは 1万〜 6万である。The intrinsic viscosity [η] of the component (B) of the polybutadiene rubber composition measured at 30 ° C. in toluene is 0.1 to 0.5.
And preferably 0.1 to 0.4. The component (B) has a weight average molecular weight (Mw) of 10,000 to 70,000 as measured by gel permeation chromatography (GPC),
Preferably it is 10,000 to 60,000.
【００１３】［η］または重量平均分子量（Ｍｗ）が上
記範囲より大きいと、艶消し効果が小さくなる。［η］
または重量平均分子量（Ｍｗ）が上記範囲より小さい
と、低温使用時の耐衝撃性が改善されない。When [η] or the weight average molecular weight (Mw) is larger than the above range, the matting effect is reduced. [Η]
Alternatively, if the weight average molecular weight (Mw) is smaller than the above range, the impact resistance at low temperature use is not improved.
【００１４】ポリブタジエンゴム組成物の（Ａ）成分の
高分子量ポリブタジエンと（Ｂ）成分の低分子量ポリブ
タジエンとの混合割合は、（Ａ）が65〜30重量％、好ま
しくは65〜35重量％であり、（Ｂ）が35〜70重量％、好
ましくは35〜65重量％である。混合割合が上記の範囲外
であると、低温使用時の耐衝撃性が充分に改善されな
い。The mixing ratio of the high molecular weight polybutadiene (A) and the low molecular weight polybutadiene (B) of the polybutadiene rubber composition is such that (A) is 65 to 30% by weight, preferably 65 to 35% by weight. , (B) is 35 to 70% by weight, preferably 35 to 65% by weight. If the mixing ratio is outside the above range, the impact resistance at the time of use at low temperatures is not sufficiently improved.
【００１５】本発明のポリブタジエンゴム組成物は、上
記の高分子量ポリブタジエン（Ａ）成分と低分子量ポリ
ブタジエン（Ｂ）成分とを各々別々に重合後、ブレンド
して製造することができる。（Ａ）成分と（Ｂ）成分
は、溶液の状態でブレンドしてもよく、又、脱溶媒した
ものを混練してブレンドしてもよい。又、二段重合法で
本発明のポリブタジエンゴム組成物を製造することも可
能である。The polybutadiene rubber composition of the present invention can be produced by separately polymerizing the above-mentioned high molecular weight polybutadiene (A) component and low molecular weight polybutadiene (B) component and then blending them. The component (A) and the component (B) may be blended in a solution state, or may be kneaded and blended after desolvation. It is also possible to produce the polybutadiene rubber composition of the present invention by a two-stage polymerization method.
【００１６】（Ａ）成分の高分子量ポリブタジエンは、
例えば、コバルト、ニッケル、チタン、ネオジウム等の
遷移金属化合物と有機アルミウムとからなるチーグラー
・ナッタ系触媒、メタロセン系触媒などを用いて製造す
ることができる。又、（Ｂ）成分の低分子量ポリブタジ
エンは、上記のチーグラー・ナッタ系触媒や、リチウム
系触媒などを用いて製造できる。The high molecular weight polybutadiene of the component (A)
For example, it can be produced using a Ziegler-Natta-based catalyst, a metallocene-based catalyst, or the like comprising a transition metal compound such as cobalt, nickel, titanium, and neodymium and an organic aluminum. The low molecular weight polybutadiene of the component (B) can be produced using the above-mentioned Ziegler-Natta catalyst, lithium catalyst or the like.
【００１７】上記の製造方法において二段重合法として
は、シクロオクタジエンなどの連鎖移動剤の添加量を前
段重合と後段重合で変化させる方法、前段重合と後段重
合で触媒成分を変える方法などを用いることができる。
例えば、高分子量ポリブタジエンをＣｏ・Ｏｃｔなどの
コバルト化合物−ＡｌＥｔ2 Ｃｌなどの有機アルミニウ
ム化合物−Ｈ2 Ｏからなる触媒系で、低分子量ポリブタ
ジエンをＮｉ・ｎａｐｈなどのニッケル化合物−ＡｌＥ
ｔ2 Ｃｌなどの有機アルミニウム化合物−Ｈ2Ｏからな
る触媒系で、二段重合又はそれぞれ単独重合後にブレン
ドする方法などで製造することができる。In the above-mentioned production method, examples of the two-stage polymerization include a method in which the amount of a chain transfer agent such as cyclooctadiene is changed in the first and second polymerizations, and a method in which the catalyst component is changed in the first and second polymerizations. Can be used.
For example, a high molecular weight polybutadiene is a catalyst system consisting of a cobalt compound such as Co.Oct or the like; an organoaluminum compound such as AlEt 2 Cl—H 2 O; and a low molecular weight polybutadiene is a nickel compound such as Ni
A catalyst system comprising an organic aluminum compound such as t 2 Cl—H 2 O, which can be produced by a two-stage polymerization or a method of blending after homopolymerization, respectively.
【００１８】また、本発明のポリブタジエンゴム組成物
は、上記の固有粘度［η］又はシス-1,4- 構造含有率が
範囲外であるポリブタジエンを、必要に応じて50重量％
未満において含有してもよい。Further, the polybutadiene rubber composition of the present invention may contain, if necessary, 50% by weight of polybutadiene having an intrinsic viscosity [η] or a cis-1,4-structure content outside the range.
It may be contained in less than.
【００１９】本発明の耐衝撃性ポリスチレン系樹脂は、
上記のポリブタジエンゴム組成物をスチレン系モノマー
に溶解し、これを塊状重合する方法や塊状−懸濁重合す
る方法で製造できる。ポリブタジエンゴム組成物は上記
（Ａ）成分と（Ｂ）成分をブレンドしてからスチレン系
モノマーに溶解してもよく、あるいは、各成分を同時に
スチレン系モノマーに溶解して用いてもよい。また各々
をスチレン系モノマーに溶解してから溶液をブレンドし
て用いてよい。The impact-resistant polystyrene resin of the present invention comprises:
The polybutadiene rubber composition can be produced by dissolving the above polybutadiene rubber composition in a styrene-based monomer and subjecting it to bulk polymerization or bulk-suspension polymerization. The polybutadiene rubber composition may be used by dissolving the components (A) and (B) in a styrene monomer after blending the components (A) and (B), or may be used by dissolving each component in the styrene monomer at the same time. Alternatively, each may be dissolved in a styrene-based monomer, and then the solutions may be blended and used.
【００２０】本発明のポリブタジエンゴム組成物を耐衝
撃性ポリスチレン系樹脂の製造に用いる場合は、その使
用量割合はポリブタジエンゴム組成物 2〜25重量％とポ
リスチレン系樹脂98〜75重量％であり、好ましくはポリ
ブタジエンゴム組成物 3〜15重量％とポリスチレン系樹
脂97〜85重量％である。When the polybutadiene rubber composition of the present invention is used for the production of an impact-resistant polystyrene resin, the proportion used is 2 to 25% by weight of the polybutadiene rubber composition and 98 to 75% by weight of the polystyrene resin. Preferably, the content is 3 to 15% by weight of the polybutadiene rubber composition and 97 to 85% by weight of the polystyrene resin.
【００２１】ポリブタジエンゴム組成物の割合が 2重量
％よりも少ないと、耐衝撃性ポリスチレン系樹脂の耐衝
撃性は殆ど改良されない。一方、ポリブタジエンゴム組
成物の割合が25重量％よりも多いと、耐衝撃性ポリスチ
レン系樹脂の剛性や機械的強度が低下する。又、重合溶
液の粘度が高くなり過ぎ、攪拌、重合が困難になるとい
う問題がある。When the proportion of the polybutadiene rubber composition is less than 2% by weight, the impact resistance of the impact-resistant polystyrene resin is hardly improved. On the other hand, when the proportion of the polybutadiene rubber composition is more than 25% by weight, the rigidity and mechanical strength of the impact-resistant polystyrene resin decrease. Further, there is a problem that the viscosity of the polymerization solution becomes too high, and stirring and polymerization become difficult.
【００２２】本発明の耐衝撃性ポリスチレン系樹脂にお
いて、スチレン系モノマーとして、スチレンの他、α−
メチルスチレン、クロロスチレン、ジビニルベンゼン等
も用い得る。更に、スチレン系モノマーと共重合可能な
ビニル系モノマーも併用することができる。但し、その
量がスチレン系モノマーに対して50重量％以下であるこ
とが好ましい。In the impact-resistant polystyrene resin of the present invention, styrene and α-
Methylstyrene, chlorostyrene, divinylbenzene and the like can also be used. Further, a vinyl monomer copolymerizable with a styrene monomer can be used in combination. However, the amount is preferably 50% by weight or less based on the styrene monomer.
【００２３】ゴム成分としては、本発明のポリブタジエ
ンゴム組成物以外に、スチレン・ブタジエン共重合体、
エチレン・プロピレン共重合体、エチレン・プロピレン
・ジエン三元共重合体、エチレン・酢酸ビニル共重合
体、アクリルゴム等、他の種類のゴムを併用してもよ
い。但し、これらのゴムの量は、本発明のポリブタジエ
ンゴム組成物に対して、50重量％以下であることが好ま
しい。As the rubber component, in addition to the polybutadiene rubber composition of the present invention, a styrene / butadiene copolymer,
Other types of rubbers such as an ethylene / propylene copolymer, an ethylene / propylene / diene terpolymer, an ethylene / vinyl acetate copolymer, and an acrylic rubber may be used in combination. However, the amount of these rubbers is preferably 50% by weight or less based on the polybutadiene rubber composition of the present invention.
【００２４】この耐衝撃性ポリスチレン系樹脂には、必
要に応じて安定剤、着色剤、可塑剤、紫外線吸収剤等各
種の添加剤を配合することができる。Various additives such as a stabilizer, a colorant, a plasticizer, and an ultraviolet absorber can be added to the impact-resistant polystyrene resin as required.
【００２５】[0025]
【実施例】ミクロ構造は、赤外吸収スペクトル分析によ
って行い、シス740 cm-1、トランス967 cm-1、ビニル91
0 cm-1の吸収強度比から算出した。［η］は、トルエン
溶液で30℃の温度で測定した。Mw及びMw/Mn は、ゲルパ
ーミエーションクロマトグラフ（ＧＰＣ）で測定される
ポリスチレン換算の重量平均分子量（Mw）及び数平均分
子量（Mn）から求めた。EXAMPLES The microstructure was analyzed by infrared absorption spectroscopy. The results were cis 740 cm −1 , trans 967 cm −1 ,
It was calculated from the absorption intensity ratio of 0 cm -1 . [Η] was measured at a temperature of 30 ° C. in a toluene solution. Mw and Mw / Mn were determined from weight average molecular weights (Mw) and number average molecular weights (Mn) in terms of polystyrene measured by gel permeation chromatography (GPC).
【００２６】ポリスチレン系樹脂のアイゾット衝撃強度
は、ノッチ付、厚み１／８インチの射出成形品を用いて
ＡＳＴＭ２５６に準じて測定した。艶消しは、ＪＩＳＫ
７１０５により、入射角60℃で測定したグロス値で評価
した。グロス値が小さい程、艶消し性が良好である。ゴ
ム粒子径は、（株）日科機製コールターカウンターＴＡ
−２型を用いて測定した。The Izod impact strength of a polystyrene resin was measured according to ASTM 256 using a notched injection molded product having a thickness of 1/8 inch. Matting is JISK
According to 7105, evaluation was made based on a gloss value measured at an incident angle of 60 ° C. The smaller the gloss value, the better the matting property. The rubber particle size is measured by Coulter Counter TA manufactured by Nikkaki Co., Ltd.
-2 type was measured.
【００２７】（実施例１） （ポリブタジエンゴム組成物の製造方法） (1) （Ａ）成分（高分子量ポリブタジエン）の製造 窒素置換した攪拌機付 1.5L のオートクレーブにベンゼ
ン（Ｂｚ） 740 mL 及び1,3-ブタジエン（Ｂｄ） 260mL
(161g)を仕込んで攪拌する。水 1.66mmoL を添加して溶
解し、シクロオクタジエン（ＣＯＤ） 0.67mmol 、ジエ
チルアルミニウムモノクロライド（ＤＥＡＣ） 4.15mmo
l を加え、60℃に昇温して、オクテン酸コバルト（Ｃｏ
・ｏｃｔ）0.01mmolを添加して、60℃で30分間重合を行
った。重合反応終了後、重合溶液に少量の 2,6- ジター
シャリーブチルパラクレゾールを含むメタノール5mL 注
入して重合を停止させて、放圧後、重合溶液を取り出
し、真空乾燥してポリブタジエンを得た。得られたポリ
ブタジエンの収量、分析結果を表７に示す。(Example 1) (Method for producing polybutadiene rubber composition) (1) Production of component (A) (high molecular weight polybutadiene) In a 1.5 L autoclave equipped with a stirrer and purged with nitrogen, 740 mL of benzene (Bz) and 1, 3-butadiene (Bd) 260mL
(161 g) and stirred. 1.66 mmol of water was added and dissolved, and cyclooctadiene (COD) 0.67 mmol, diethyl aluminum monochloride (DEAC) 4.15 mmol
l, and the temperature is raised to 60 ° C. to obtain cobalt octenoate (Co
Oct) 0.01 mmol was added, and polymerization was carried out at 60 ° C. for 30 minutes. After the completion of the polymerization reaction, 5 mL of methanol containing a small amount of 2,6-ditert-butylparacresol was injected into the polymerization solution to terminate the polymerization. After the pressure was released, the polymerization solution was taken out and dried under vacuum to obtain polybutadiene. Table 7 shows the yield and analysis results of the obtained polybutadiene.
【００２８】(2) （Ｂ）成分（低分子量ポリブタジエ
ン）の製造 窒素置換した攪拌機付 1.5L のオートクレーブにベンゼ
ン 740 mL 及び1,3-ブタジエン 260mL(161g)を仕込んで
攪拌する。水 1.38mmol を添加して溶解し、ジエチルア
ルミニウムモノクロライド 4.15mmol を加え80℃に昇温
して、オクテン酸ニッケル（Ｎｉ・ｏｃｔ） 0.02mmol
を添加して、80℃で30分間重合を行った。重合反応終了
後、重合溶液に少量の2,6-ジターシャリーブチルパラク
レゾールを含むメタノール 5ml注入して重合を停止させ
て、放圧後、重合溶液を取り出し、真空乾燥してポリブ
タジエンを得た。得られたポリブタジエンの収量及び分
析結果を表７に示す。(2) Production of component (B) (low molecular weight polybutadiene) In a 1.5 L autoclave equipped with a stirrer and purged with nitrogen, 740 mL of benzene and 260 mL (161 g) of 1,3-butadiene are charged and stirred. Add 1.38 mmol of water to dissolve, add 4.15 mmol of diethylaluminum monochloride, raise the temperature to 80 ° C., and add 0.02 mmol of nickel octenoate (Ni · oct).
Was added and polymerization was carried out at 80 ° C. for 30 minutes. After the completion of the polymerization reaction, 5 ml of methanol containing a small amount of 2,6-ditert-butylparacresol was injected into the polymerization solution to terminate the polymerization. After the pressure was released, the polymerization solution was taken out and dried under vacuum to obtain polybutadiene. Table 7 shows the yield and analysis results of the obtained polybutadiene.
【００２９】(3) ポリブタジエンゴム組成物の製造 (1)、(2) で製造した（Ａ）成分、（Ｂ）成分ポリブタ
ジエンを表８に示す混合割合でヘキサン溶液ブレンドし
た。溶媒を除去乾燥し、ポリブタジエンゴム組成物を得
た。(3) Production of polybutadiene rubber composition The components (A) and (B) produced in (1) and (2) were blended with a hexane solution in a mixing ratio shown in Table 8. The solvent was removed and dried to obtain a polybutadiene rubber composition.
【００３０】（耐衝撃性ポリスチレン系樹脂の製造方
法） 1L セパラブルフラスコを窒素ガスで置換し、スチレン
４５０g と上記ポリブタジエンゴム組成物50g （ゴム10
重量％）とを加えて溶解し、次いでn-ドデシルメルカプ
タン0.15g を加えて、 135℃で 500rpm の速度で攪拌し
ながらスチレンの転化率が30％になるまで予備重合し
た。次に、この予備重合液に 0.5wt% ポリビニルアルコ
−ル水溶液 490mLを注入し、ベンゾイルパ−オキサイド
1.0g 及びジクミルパ−オキサイド 1.0g を加えて 100
℃で 2時間、 125℃で 3時間、 140℃で 2時間攪拌下に
連続的に重合した。室温に冷却して重合反応混合物から
ビ−ズ状のポリマ−をろ過し、水洗、乾燥した。これを
押出機でペレット化して耐衝撃性ポリスチレン系樹脂 4
50ｇを得た。得られた耐衝撃性ポリスチレン系樹脂をそ
れぞれ射出成形して物性測定用試験片を作成して物性測
定を行い、結果を表９に示した。(Method for Producing Impact-Resistant Polystyrene Resin) A 1 L separable flask was replaced with nitrogen gas, and 450 g of styrene and 50 g of the above polybutadiene rubber composition (rubber 10
% By weight), and 0.15 g of n-dodecylmercaptan was added. The mixture was prepolymerized while stirring at 135 ° C. at a speed of 500 rpm until the conversion of styrene became 30%. Next, 490 mL of a 0.5 wt% aqueous polyvinyl alcohol solution was injected into the prepolymerized solution, and benzoyl peroxide was added.
Add 1.0 g and 1.0 g of dicumyl peroxide to add 100
Polymerization was carried out continuously with stirring for 2 hours at 125 ° C, 3 hours at 125 ° C and 2 hours at 140 ° C. After cooling to room temperature, a beaded polymer was filtered from the polymerization reaction mixture, washed with water and dried. This is pelletized with an extruder and used as impact-resistant polystyrene resin.
50 g were obtained. Each of the obtained impact-resistant polystyrene resins was injection-molded to prepare a test piece for measuring physical properties, and the physical properties were measured. The results are shown in Table 9.
【００３１】実施例２、３ （ポリブタジエンゴム組成物の製造方法）表１及び表２
に示す重合条件に従って重合した以外は実施例１と同様
に行って、それぞれ（Ａ）成分、（Ｂ）成分ポリブタジ
エンを製造し、分析結果を表７に示した。実施例１と同
様にして、表８に示す混合割合のポリブタジエンゴム組
成物を得た。Examples 2 and 3 (Method for producing polybutadiene rubber composition) Tables 1 and 2
The components (A) and (B) were produced in the same manner as in Example 1 except that the polymerization was carried out according to the polymerization conditions shown in Table 1. The analysis results are shown in Table 7. In the same manner as in Example 1, a polybutadiene rubber composition having a mixing ratio shown in Table 8 was obtained.
【００３２】（耐衝撃性ポリスチレン系樹脂の製造方
法）このポリブタジエンゴム組成物を用いて実施例１と
同様にして、耐衝撃性ポリスチレン系樹脂 450g を得
て、物性測定を行い、結果を表９に示した(Production method of impact-resistant polystyrene resin) Using this polybutadiene rubber composition, 450 g of impact-resistant polystyrene resin was obtained in the same manner as in Example 1, and the physical properties were measured. Pointing out toungue
【００３３】実施例４ （ポリブタジエンゴム組成物の製造方法）窒素置換した
攪拌機付 1.5L のオートクレーブにベンゼン 740mL及び
1,3-ブタジエン 260mL(161g)を仕込んで攪拌する。水
1.48mmol を添加して溶解し、ジエチルアルミニウムモ
ノクロライド 4.15mmol を加え、60℃に昇温して、オク
テン酸コバルト 0.009mmolを添加して、 60 ℃で25分間
重合を行った（（Ａ）成分のポリブタジエンを製造）。
さらに、80℃に昇温して、1,3-ブタジエン 170mL(105g)
添加し、オクテン酸ニッケル 0.063mmolを加えて、80℃
でさらに25分間重合を行いった（（Ｂ）成分のポリブタ
ジエンを製造）。重合反応終了後、重合溶液に少量の2,
6-ジターシャリーブチルパラクレゾールを含むメタノー
ル 5ml注入して重合を停止させて、放圧後、重合溶液を
取り出し、真空乾燥してポリブタジエン組成物を得た。
得られたポリブタジエン組成物の収量、分析結果を表７
に示す。表８に示した（Ａ）成分と（Ｂ）成分の混合割
合は、最終生成ポリマーのＧＰＣを測定し、そのＧＰＣ
曲線の高分子量成分及び低分子量成分の面積比より求め
た。なお、連続重合での（Ａ）成分と（Ｂ）成分のＭｗ
とＭｎはＧＰＣ曲線のそれぞれのピークから求め、それ
ぞれの〔η〕は、〔η〕−Ｍｗの検量線から求めた。Example 4 (Method for producing polybutadiene rubber composition) 740 mL of benzene was placed in a 1.5 L autoclave equipped with a stirrer and purged with nitrogen.
260 mL (161 g) of 1,3-butadiene is charged and stirred. water
1.48 mmol was added and dissolved, 4.15 mmol of diethyl aluminum monochloride was added, the temperature was raised to 60 ° C, 0.009 mmol of cobalt octenoate was added, and polymerization was carried out at 60 ° C for 25 minutes (component (A)). Of polybutadiene).
Further, the temperature was raised to 80 ° C., and 1,3-butadiene 170 mL (105 g)
Add nickel octenoate 0.063mmol, 80 ℃
For another 25 minutes (producing polybutadiene as component (B)). After the completion of the polymerization reaction, a small amount of 2,2 is added to the polymerization solution.
The polymerization was stopped by injecting 5 ml of methanol containing 6-ditert-butylparacresol, and after releasing the pressure, the polymerization solution was taken out and dried under vacuum to obtain a polybutadiene composition.
Table 7 shows the yield and analysis results of the obtained polybutadiene composition.
Shown in The mixing ratio of the component (A) and the component (B) shown in Table 8 was determined by measuring the GPC of the final polymer.
It was determined from the area ratio of the high molecular weight component and the low molecular weight component in the curve. In addition, Mw of component (A) and component (B) in continuous polymerization
And Mn were determined from each peak of the GPC curve, and each [η] was determined from a calibration curve of [η] -Mw.
【００３４】（耐衝撃性ポリスチレン系樹脂の製造方
法）このポリブタジエンゴム組成物を用いて実施例１と
同様にして、耐衝撃性ポリスチレン系樹脂 450g を得
て、物性測定を行い、結果を表９に示した(Production method of impact-resistant polystyrene resin) Using this polybutadiene rubber composition, 450 g of impact-resistant polystyrene resin was obtained in the same manner as in Example 1, and the physical properties were measured. Pointing out toungue
【００３５】実施例５ （ポリブタジエンゴム組成物の製造方法）表３及び表４
に示す重合条件に従って重合した以外は実施例４と同様
に行って、ポリブタジエンゴム組成物を製造し、分析結
果と混合割合を表７及び表８に示した。Example 5 (Method for producing polybutadiene rubber composition) Tables 3 and 4
The polybutadiene rubber composition was produced in the same manner as in Example 4 except that the polymerization was carried out according to the polymerization conditions shown in Table 7, and the analysis results and mixing ratios are shown in Tables 7 and 8.
【００３６】（耐衝撃性ポリスチレン系樹脂の製造方
法）このポリブタジエンゴム組成物を用いて実施例１と
同様にして、耐衝撃性ポリスチレン系樹脂 450g を得
て、物性測定を行い、結果を表９に示した。(Production method of impact-resistant polystyrene resin) Using this polybutadiene rubber composition, 450 g of impact-resistant polystyrene resin was obtained in the same manner as in Example 1, and the physical properties were measured. It was shown to.
【００３７】比較例１ （ポリブタジエンゴム組成物の製造方法）オクテン酸ニ
ッケルに換えてオクテン酸コバルトを用いて（Ｂ）成分
を製造し、表５及び表６に示す重合条件に従って重合し
た以外は実施例１と同様に行ってポリブタジエンゴム組
成物を製造し、分析結果と混合割合を表７及び表８に示
した。Comparative Example 1 (Production method of polybutadiene rubber composition) The procedure was carried out except that the component (B) was produced using cobalt octenoate instead of nickel octenoate and the polymerization was carried out under the polymerization conditions shown in Tables 5 and 6. A polybutadiene rubber composition was produced in the same manner as in Example 1, and the analysis results and mixing ratios are shown in Tables 7 and 8.
【００３８】（耐衝撃性ポリスチレン系樹脂の製造方
法）このポリブタジエンゴム組成物を用いて実施例１と
同様にして、耐衝撃性ポリスチレン系樹脂４５０ｇを得
て、物性測定を行い、結果を表９に示した。(Production method of impact-resistant polystyrene resin) Using this polybutadiene rubber composition, 450 g of impact-resistant polystyrene resin was obtained in the same manner as in Example 1, and the physical properties were measured. It was shown to.
【００３９】比較例２ （単一ポリブタジエンの製造方法）表５の条件に従って
実施例１の（１）と同様に行って、ポリブタジエンを製
造し、分析結果を表７に示した。Comparative Example 2 (Method for Producing Single Polybutadiene) Polybutadiene was produced in the same manner as in (1) of Example 1 under the conditions shown in Table 5, and the analysis results are shown in Table 7.
【００４０】（耐衝撃性ポリスチレン系樹脂の製造方
法）このポリブタジエンゴム組成物を用いて実施例１と
同様にして、耐衝撃性ポリスチレン系樹脂 450g を得
て、物性測定を行い、結果を表９に示した(Production method of impact-resistant polystyrene resin) Using this polybutadiene rubber composition, 450 g of impact-resistant polystyrene resin was obtained in the same manner as in Example 1, and the physical properties were measured. Pointing out toungue
【００４１】[0041]
【表１】 [Table 1]
【００４２】[0042]
【表２】 [Table 2]
【００４３】[0043]
【表３】 [Table 3]
【００４４】[0044]
【表４】 [Table 4]
【００４５】[0045]
【表５】 [Table 5]
【００４６】[0046]
【表６】 [Table 6]
【００４７】[0047]
【表７】 [Table 7]
【００４８】[0048]
【表８】 [Table 8]
【００４９】[0049]
【表９】 [Table 9]
【００５０】[0050]
【発明の効果】本発明により耐衝撃性ポリスチレン系樹
脂のゴム成分として好適なポリブタジエンゴム組成物、
及びそれをゴム成分として用いた耐衝撃性ポリスチレン
系樹脂組成物が提供される。According to the present invention, a polybutadiene rubber composition suitable as a rubber component of an impact-resistant polystyrene resin,
And an impact-resistant polystyrene resin composition using the same as a rubber component.
Claims (2)
度［η］が 3.0〜7.0 で且つシス-1,4- 構造含有率が80
％以上のポリブタジエンを主成分とする高分子量ポリブ
タジエン65〜30重量％と、（Ｂ）トルエン中30℃で測定
した固有粘度［η］が 0.1〜0.5 のポリブタジエンを主
成分とする低分子量ポリブタジエン35〜70重量％とから
なるポリブタジエンゴム組成物 2〜25重量％とポリスチ
レン系樹脂98〜75重量％とからなる耐衝撃性ポリスチレ
ン系樹脂組成物。(A) An intrinsic viscosity [η] measured at 30 ° C. in toluene of 3.0 to 7.0 and a cis-1,4-structure content of 80
% Of high molecular weight polybutadiene having a polybutadiene content of at least 65% to 30% by weight, and (B) a low molecular weight polybutadiene having a intrinsic viscosity [η] of 0.1 to 0.5 measured at 30 ° C. in toluene of 0.1 to 0.5. An impact-resistant polystyrene resin composition comprising 2 to 25% by weight of a polybutadiene rubber composition comprising 70% by weight and 98 to 75% by weight of a polystyrene resin.
ラフ（ＧＰＣ）で測定した重量平均分子量（Ｍｗ）が70
万〜 200万で且つシス-1,4- 構造含有率が80％以上のポ
リブタジエンを主成分とする高分子量ポリブタジエン65
〜30重量％と、（Ｂ）ゲルパーミエーションクロマトグ
ラフ（ＧＰＣ）で測定した重量平均分子量（Ｍｗ）が 1
万〜 7万のポリブタジエンを主成分とする低分子量ポリ
ブタジエン35〜70重量％とからなるポリブタジエンゴム
組成物 2〜25重量％とポリスチレン系樹脂98〜75重量％
とからなる耐衝撃性ポリスチレン系樹脂組成物。2. (A) The weight average molecular weight (Mw) measured by gel permeation chromatography (GPC) is 70.
High molecular weight polybutadiene 65 containing polybutadiene as a main component and having a cis-1,4-structure content of 80% or more
And (B) a weight average molecular weight (Mw) measured by gel permeation chromatography (GPC) of 1 to 30% by weight.
2 to 25% by weight of a polybutadiene rubber composition comprising 35 to 70% by weight of a low molecular weight polybutadiene containing 10,000 to 70,000 polybutadiene as a main component and 98 to 75% by weight of a polystyrene resin
An impact-resistant polystyrene resin composition comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35071497A JPH11181202A (en) | 1997-12-19 | 1997-12-19 | Impact resistant polystyrene resin composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35071497A JPH11181202A (en) | 1997-12-19 | 1997-12-19 | Impact resistant polystyrene resin composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11181202A true JPH11181202A (en) | 1999-07-06 |
Family
ID=18412362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35071497A Pending JPH11181202A (en) | 1997-12-19 | 1997-12-19 | Impact resistant polystyrene resin composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11181202A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002544342A (en) * | 1999-05-19 | 2002-12-24 | 株式会社ブリヂストン | Low molecular weight high cis polybutadiene and their use in high molecular weight / low molecular weight high cis polybutadiene blends |
| JP2006104288A (en) * | 2004-10-04 | 2006-04-20 | Ube Ind Ltd | Polybutadiene and method for producing polybutadiene |
-
1997
- 1997-12-19 JP JP35071497A patent/JPH11181202A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002544342A (en) * | 1999-05-19 | 2002-12-24 | 株式会社ブリヂストン | Low molecular weight high cis polybutadiene and their use in high molecular weight / low molecular weight high cis polybutadiene blends |
| JP4790913B2 (en) * | 1999-05-19 | 2011-10-12 | 株式会社ブリヂストン | Low molecular weight high cis polybutadiene and their use in high molecular weight / low molecular weight high cis polybutadiene blends |
| JP2006104288A (en) * | 2004-10-04 | 2006-04-20 | Ube Ind Ltd | Polybutadiene and method for producing polybutadiene |
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