Using Excess Levels of Metal Salts to Improve Properties when Incorporating Polymers in Asphalt
    1.
    发明申请
    Using Excess Levels of Metal Salts to Improve Properties when Incorporating Polymers in Asphalt 审中-公开
    在沥青中加入聚合物时,使用过多的金属盐来改善其性能

    公开(公告)号:US20090149577A1

    公开(公告)日:2009-06-11

    申请号:US12369285

    申请日:2009-02-11

    IPC分类号: C08L95/00 E01C7/26

    摘要: In methods of preparing asphalt and elastomeric polymer compositions such as polymer modified asphalt (PMA), it has been discovered that the compatibility can be improved by adding excess amounts of certain organic and inorganic metal salts beyond the proportions normally used. Suitable metal salts may be metal oxides that include, but are not necessarily limited to, zinc oxide, calcium oxide, and the like. The method of the invention also permits asphalt modified with other polymers such as ground tire rubber (GTR) to have improved compatibility. Additionally, the use of excess amounts of these metal salts helps control gel formation.

    摘要翻译: 在制备沥青和弹性体聚合物组合物如聚合物改性沥青(PMA)的方法中,已经发现通过加入超过通常使用的比例的过量的某些有机和无机金属盐可以改善相容性。 合适的金属盐可以是金属氧化物,其包括但不一定限于氧化锌,氧化钙等。 本发明的方法还允许用诸如磨碎轮胎橡胶(GTR)的其它聚合物改性的沥青具有改进的相容性。 另外,使用过量的这些金属盐有助于控制凝胶形成。

    Bitumen/Rubber Compositions Crosslinked with Polythiomorpholines, Polysulfides and/or Mercaptobenzimidazole
    3.
    发明申请
    Bitumen/Rubber Compositions Crosslinked with Polythiomorpholines, Polysulfides and/or Mercaptobenzimidazole 失效
    与聚硫代吗啉,多硫化物和/或巯基苯并咪唑交联的沥青/橡胶组合物

    公开(公告)号:US20090143504A1

    公开(公告)日:2009-06-04

    申请号:US12367303

    申请日:2009-02-06

    IPC分类号: E01C7/26

    摘要: Asphalt and elastomeric polymer compositions crosslinked with mixed polythiomorpholines or at least one alkyl polysulfide can give polymer modified asphalts (PMAs) with improved properties and/or reduced H2S evolution. When at least one alkyl polysulfide is used to completely or partially replace conventional crosslinkers such as S or MBT, mercaptobenzimidazole (MBI) may be optionally used as a co-crosslinker. The use of mixed polythiomorpholines as crosslinkers provide PMAs with better low temperature profiles (BBR m-values). The use of at least one alkyl polysulfide crosslinker gives PMAs with improved PAV-aged DSR results, and reduced H2S evolution. The use of at least one alkyl polysulfide crosslinker together with MBI may give PMAs with improved PAV DSR Fail Temperatures.

    摘要翻译: 用混合多硫代吗啉或至少一种烷基多硫化物交联的沥青和弹性聚合物组合物可以得到具有改进性能和/或降低的H 2 S进化的聚合物改性沥青(PMA)。 当使用至少一种烷基多硫化物来完全或部分替代常规交联剂如S或MBT时,巯基苯并咪唑(MBI)可以任选地用作共交联剂。 使用混合的聚硫代吗啉作为交联剂为PMA提供了更好的低温谱(BBR m值)。 使用至少一种烷基多硫化物交联剂使PMA具有改进的PAV老化的DSR结果,并降低了H2S进化。 使用至少一种烷基多硫化物交联剂与MBI一起可以使PMA具有改进的PAV DSR失败温度。

    Reduction of sulfur emissions from crude fractions
    9.
    发明授权
    Reduction of sulfur emissions from crude fractions 失效
    减少粗馏分的硫排放

    公开(公告)号:US07544239B2

    公开(公告)日:2009-06-09

    申请号:US11250665

    申请日:2005-10-14

    IPC分类号: C08L95/00

    摘要: Methods of modifying crude fractions are described herein. The methods generally include blending a crude fraction with an emissions reducing additive to form a modified crude fraction, wherein the modified crude fraction exhibits reduced sulfur emissions. The emissions reducing additive generally includes a dispersion of a metal oxide.

    摘要翻译: 本文描述了改性粗馏分的方法。 所述方法通常包括将粗馏分与排放减少添加剂混合以形成改性的粗馏分,其中改性的粗馏分表现出减少的硫排放。 减排添加剂通常包括金属氧化物的分散体。