公开(公告)号：US06444752B1

公开(公告)日：2002-09-03

申请号：US09852198

申请日：2001-05-09

申请人： Mehmet Demirors ,  Dianne J. M. Maughon ,  Jose M. Rego ,  David Schrader

发明人： Mehmet Demirors ,  Dianne J. M. Maughon ,  Jose M. Rego ,  David Schrader

IPC分类号： C08F27902

CPC分类号： C08F279/02 ,  C08F257/02 ,  C08L51/003 ,  C08L51/04 ,  C08F212/08 ,  C08L2666/02

摘要： Disclosed are rubber-modified monovinylidene aromatic polymers with improved toughness and rigidity as well as a process for the preparation thereof. The polymer comprises: a) a monovinylidene aromatic polymer matrix, b) rubber particles dispersed therein, characterized in that the rubber particles are produced from a diene rubber having I) from 20 to 80 percent, based on the total weight of said rubber particles, of a high solution viscosity component having a viscosity value ranging from 110 to 500 centipoise and II) from 80 to 20 percent, based on the total weight of said rubber particles, of a low solution viscosity component having a viscosity value ranging from 1 to 100 centipoise, further characterized in that the ratio of solution viscosity of high solution viscosity component to the solution viscosity of low solution viscosity ranges from 1.1 to 500, wherein both components I and II have a 1,4 cis content of greater than 30 percent, and III) the rubber is grafted with monovinylidene aromatic polymer to the extent that there is at least 30 percent monovinylidene aromatic polymer present as grafts on the rubber.

摘要翻译： 公开了具有改进的韧性和刚性的橡胶改性的单亚乙烯基芳族聚合物以及其制备方法。 聚合物包括：a）单亚乙烯基芳族聚合物基体，b）分散在其中的橡胶颗粒，其特征在于，所述橡胶颗粒由二烯橡胶制成，所述二烯橡胶的I）为20-80重量％，基于所述橡胶颗粒的总重量， 具有粘度值为110-500厘泊的高溶液粘度组分和II。基于所述橡胶颗粒总重量的80％至20％的粘度值范围为1至100的低溶液粘度组分 其特征在于，高溶液粘度组分的溶液粘度与低溶液粘度的溶液粘度的比例为1.1至500，其中组分I和II均具有大于30％的1,4-顺式含量，以及 III）橡胶用单亚乙烯基芳族聚合物接枝至至少30％的单亚乙烯基芳族聚合物作为橡胶上的接枝物存在的程度。