公开(公告)号：WO9933914A3

公开(公告)日：1999-09-10

申请号：PCT/EP9808361

申请日：1998-12-18

Applicant: BASF CORP ,  BENNETT JAMES H ,  MUEHLBACH KLAUS ,  KOGOWSKI GARY ,  GOERRISSEN HEINER ,  MC KEE GRAHAM EDMUND

Inventor： BENNETT JAMES H ,  MUEHLBACH KLAUS ,  KOGOWSKI GARY ,  GOERRISSEN HEINER ,  MC KEE GRAHAM EDMUND

IPC: C08F257/02 ,  C08L51/04 ,  C08L25/04 ,  B32B27/28 ,  C08L51/00 ,  C08L55/02

CPC classification number: C08F257/02 ,  C08L51/04 ,  C08F212/08 ,  C08L2666/04

Abstract: The invention provides a weatherable low gloss styrene copolymer composition which requires the addition of from 0.1 to 20 % by weight of the total composition, of a partially crystalline polymer such as a polyalkylterephthalate, especially polybutyleneterephthalate or polyethyleneterephthalate, or polyethylenenaphthalate to a styrene copolymer (A). The low gloss styrene copolymer composition of the invention has a graft copolymer resin which results from polymerizing one or more monomers (A1) selected from the group consisting of (i) aromatic vinyl compounds, (ii) ethylenically unsaturated compounds, and (iii) mixtures thereof, in the presence of an elastomeric rubber (A2) in particulate form. The elastomeric rubber (A2) in particulate form results from polymerizing one or more monomers selected from the group consisting of (i) alkyl acrylates having from 1 to 8 carbon atoms, (ii) butadiene, (iii) olefin compounds, (iv) ethylenically unsaturated compounds, (v) aromatic vinyl compounds, (vi) polyfunctional monomers having a crosslinking effect, and (vii) mixtures thereof. The invention further provides a method of reducing the surface gloss of a styrene copolymer resin by adding to a styrene copolymer resin (A), from 0.1 to 20 % by weight of a partially crystalline polymer such as a polyalkylterephthalate (B), based on the total weight of the composition. The invention also provides a composite suitable for use as exterior siding for a structure, the composite comprising at least one interior layer (I) comprising a thermoplastic resin, and at least one exterior layer (II) having a low gloss styrene copolymer comprising the low gloss styrene copolymer composition of the invention, wherein exterior layer (II) is continuous and coextensive with interior layer (I).

Abstract translation: 本发明提供耐候性低光泽度苯乙烯共聚物组合物，其需要将总组合物的0.1至20重量％的部分结晶聚合物，例如聚对苯二甲酸烷基酯，特别是聚对苯二甲酸丁二醇酯或聚对苯二甲酸乙二醇酯或聚萘二甲酸乙二醇酯添加至苯乙烯共聚物（A ）。 本发明的低光泽苯乙烯共聚物组合物具有接枝共聚物树脂，其由选自（i）芳族乙烯基化合物，（ii）烯属不饱和化合物和（iii）混合物中的一种或多种单体（A1） 在粒状形式的弹性体橡胶（A2）存在下进行。 颗粒形式的弹性体橡胶（A2）由选自以下的一种或多种单体聚合得到：（i）具有1至8个碳原子的丙烯酸烷基酯，（ii）丁二烯，（iii）烯烃化合物，（iv）烯属 （v）芳族乙烯基化合物，（vi）具有交联作用的多官能单体，和（vii）它们的混合物。 本发明进一步提供了通过向苯乙烯共聚物树脂（A）中加入0.1-20重量％的部分结晶聚合物如聚对苯二甲酸烷基酯（B）来降低苯乙烯共聚物树脂的表面光泽度的方法，基于 组合物的总重量。 本发明还提供适合用作结构的外侧壁的复合材料，所述复合材料包含至少一个包含热塑性树脂的内层（I）和至少一个具有低光泽度苯乙烯共聚物的外层（II），所述低光泽度苯乙烯共聚物包含低 本发明的光泽苯乙烯共聚物组合物，其中外层（II）与内层（I）连续并共同延伸。