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    • 2. 发明授权
    • Transparent, rubber-modified styrene resin and production process thereof
    • 透明橡胶改性苯乙烯树脂及其制备方法
    • US5891962A
    • 1999-04-06
    • US527718
    • 1995-09-13
    • Shiro OtsuzukiMune IwamotoAkihiko NakajimaMasato TakakuHisao MoritaKoji Kawano
    • Shiro OtsuzukiMune IwamotoAkihiko NakajimaMasato TakakuHisao MoritaKoji Kawano
    • C08F287/00C08L25/14C08L53/02C08L33/10C08F279/06
    • C08F287/00C08L25/14C08L53/02
    • A transparent, rubber-modified styrene resin comprises 70 to 96 parts by weight of a copolymer formed of 20 to 70 wt. % of styrene monomer units and 30 to 80 wt. % of alkyl (meth)acrylate monomer units and 4 to 30 parts by weight of a rubbery polymer. The rubbery polymer is dispersed in the copolymer as particles having an average particle size of 0.1 to 2.0 .mu.m. At least 70 wt. % of the rubbery polymer is a styrene-butadiene block copolymer which is formed of 5 to 50 wt. % of styrene units and 50 to 95 wt. % of butadiene units, has a viscosity in a range of 3 to 60 cps when measured as a 5 wt. % styrene solution at 25.degree. C. and possesses a ratio (Mw/Mn) of a weight average molecular weight (Mw) to a number average molecular weight (Mn) in a range of 1.0 to 1.8. The copolymer and the rubbery polymer have substantially the same refractive index. Also disclosed is a production process of the transparent, rubber-modified styrene resin, which comprises polymerizing a styrene monomer and an alkyl (meth)acrylate to a high degree of polymerized conversion in the presence of the rubbery polymer so that the rubbery polymer is formed into particles while allowing the copolymer to occur with substantially the same refractive index as the rubbery polymer.
    • 透明的橡胶改性苯乙烯树脂包含70至96重量份由20至70重量% %的苯乙烯单体单元和30〜80wt。 %的(甲基)丙烯酸烷基酯单体单元和4至30重量份的橡胶状聚合物。 将橡胶状聚合物作为平均粒径为0.1〜2.0μm的粒子分散在共聚物中。 至少70wt。 橡胶状聚合物的%为苯乙烯 - 丁二烯嵌段共聚物,其为5〜50重量% %的苯乙烯单元和50至95wt。 丁二烯单元的%,当测量为5重量%时,其粘度在3至60cps的范围内。 %苯乙烯溶液,并且具有在1.0至1.8的范围内的重均分子量(Mw)与数均分子量(Mn)之比(Mw / Mn)。 共聚物和橡胶状聚合物具有基本上相同的折射率。 还公开了透明橡胶改性苯乙烯树脂的制造方法,其包括在橡胶状聚合物的存在下使苯乙烯单体和(甲基)丙烯酸烷基酯聚合成高聚合转化率,从而形成橡胶状聚合物 同时使共聚物以与橡胶状聚合物基本相同的折射率发生。
    • 4. 发明授权
    • Rubber modified styrenic resin composition having high gloss and impact
strength
    • 具有高光泽度和冲击强度的橡胶改性苯乙烯树脂组合物
    • US5473014A
    • 1995-12-05
    • US34411
    • 1993-03-19
    • Toshihiko AndoMune IwamotoMasahiro KanekoKouzou IchikawaAkihiko NakajimaMasato Takaku
    • Toshihiko AndoMune IwamotoMasahiro KanekoKouzou IchikawaAkihiko NakajimaMasato Takaku
    • C08F287/00C08L51/04C08L53/02
    • C08F287/00Y10S525/902
    • A rubber modified styrenic resin composition which can be obtained by dispersing rubber-like polymer particles in a homopolymer or a copolymer of a styrenic monomer. The rubber modified styrenic resin composition has:(a) a volume-average particle size of the rubber-like polymer particles is in the range of from 0.2 to 0.8 .mu.m,(b) a particle size distribution curve on the basis of the volume of the rubber-like polymer particles has one peak,(c) a ratio of a 5% value to a 95% value of the cumulative distribution of the particle size on the basis of the volume of the rubber-like polymer particles is in the range of from 3 to 45.The rubber-like polymer particles comprise (i) a styrene-butadiene block copolymer (I), and (ii)(1) a styrene-butadiene block copolymer (II), (2) a polybutadiene (III), or (3) a styrene-butadiene block copolymer (IV) and polybutadiene (V), wherein (I) contains 25-50 % styrene, (II) and (IV) contain 5-20% styrene, the weight ratio of: (I)/(II), (I)/(III) and (I)/(IV) is from 95/5 to 40/60 and {(I)+(IV)}/(V) is from 99/1 to 70/30 and (I) to (V) are of specified styrene solution viscosity.
    • 橡胶改性苯乙烯树脂组合物,其可以通过将橡胶状聚合物颗粒分散在苯乙烯类单体的均聚物或共聚物中而获得。 橡胶改性苯乙烯树脂组合物具有:(a)橡胶状聚合物粒子的体积平均粒径在0.2〜0.8μm的范围内,(b)基于体积的粒径分布曲线 的橡胶状聚合物颗粒具有一个峰,(c)基于橡胶状聚合物颗粒的体积,5%值与粒径的累积分布的95%的比率在 橡胶状聚合物颗粒包含(i)苯乙烯 - 丁二烯嵌段共聚物(I)和(ii)(1)苯乙烯 - 丁二烯嵌段共聚物(II),(2)聚丁二烯( III)或(3)苯乙烯 - 丁二烯嵌段共聚物(IV)和聚丁二烯(V),其中(I)含有25-50%苯乙烯,(II)和(IV)含有5-20%苯乙烯,重量比 的(I)/(II),(I)/(III)和(I)/(IV)为95/5至40/60,{(I)+(IV)} /(V) 99/1至70/30和(I)至(V)具有规定的苯乙烯溶液粘度。
    • 6. 发明授权
    • Method for removing volatile materials from a polymer composition
    • 从聚合物组合物中除去挥发性物质的方法
    • US6124426A
    • 2000-09-26
    • US160061
    • 1998-09-24
    • Ryuichi SugimotoKoji KawanoHiroya HondaMune IwamotoShiro OtsuzukiKenichiro MatsubaTetsuo MaedaYozo Maeda
    • Ryuichi SugimotoKoji KawanoHiroya HondaMune IwamotoShiro OtsuzukiKenichiro MatsubaTetsuo MaedaYozo Maeda
    • C08F6/00C08F6/28
    • C08F6/28C08F6/005
    • A method for removing volatile materials, comprises adding a blowing aid to a polymer composition containing volatile materials, mixing them in a static mixing apparatus, and extruding the resultant mixture by an extruding apparatus into a devolatilizing tank, thereby the mixture is made to be blown, to cause removal of the volatile materials. First, the blowing aid (6) is discharged with an addition nozzle apparatus (2), in a direction opposite to the direction of the flow of the polymer composition (1), to be added, and the polymer composition is introduced into the static mixing apparatus (3), at a pressure at which the blowing does not take place, thereby mixing them. Then, using the extruding apparatus (11), the resultant mixture is extruded into the devolatilizing tank (4), so that the polymer is made into a blown product at such a temperature and a pressure that the blowing coefficient B is 1.4 or more, thereby causing the removal of volatile materials.B=A'/A Expression (1)wherein A represents the cross-sectional area of an extruding apparatus, and A' represents the average cross-sectional area of the polymer composition in a direction perpendicular to the vertical direction of the blown polymer composition, at a point where the polymer composition is dropped from the lower part of an opening section of the extruding apparatus vertically 50 cm to 1 m. The method can give a polymer composition having residual volatile materials in very small amounts, by removing volatile materials continuously with high efficiency.
    • 一种除去挥发性物质的方法,包括向含有挥发性物质的聚合物组合物中加入发泡助剂,将其混合在静态混合装置中,并通过挤出装置将所得混合物挤出到脱挥发分槽中,从而将混合物吹制 ,以除去挥发性物质。 首先,用添加喷嘴装置(2)沿着与聚合物组合物(1)的流动方向相反的方向排出吹塑助剂(6),并将聚合物组合物引入静态 混合装置(3)在不发生吹塑的压力下进行混合。 然后,使用挤出装置(11)将所得混合物挤出到脱挥发分槽(4)中,使得在吹塑系数B为1.4以上的温度和压力下将聚合物制成吹塑制品, 从而导致挥发性物质的去除。B = A'/ A表达式(1)其中A表示挤出装置的横截面积,A'表示聚合物组合物在垂直于...的方向上的平均横截面积 在聚合物组合物从挤出设备的开口部分的下部垂直延伸50cm至1μm的点处,吹塑聚合物组合物的垂直方向。 该方法可以通过以高效率连续除去挥发性物质,得到非常少的具有残留挥发性物质的聚合物组合物。