Curable silane-encapped compositions having improved performances
    10.
    发明授权
    Curable silane-encapped compositions having improved performances 失效
    具有改进性能的可固化硅烷封端组合物

    公开(公告)号:US6001946A

    公开(公告)日:1999-12-14

    申请号:US933122

    申请日:1997-09-18

    CPC分类号: C08G18/10 C08G2190/00

    摘要: Certain members of the class of N-silylalkyl-aspartic acid esters, when used to endcap polyurethane polymers, offer moisture curable, one-part sealant formulations having significantly improved physical property improvements over other members of the same class of organofunctional silanes. More specifically, polyurethane polymers terminated with either the dibutyl or diethyl maleate/primary aminoalkyl silane addition product offer sealants which substantially outperform comparative sealants obtained using polymers endcapped with other olefinic carboxylate ester (dimethyl maleate, dimethyl crotonate) or nitrile (acrylonitrile)/primary aminoalkyl silane addition products. Additionally, sealant formulations incorporating the dibutyl or diethyl maleate/primary aminoalkyl silane terminated polymers demonstrate unexpected improvements in both elongation and tensile strength performance. The dibutyl maleate and dimethyl maleate based polymers give significant increase in tear resistance.

    摘要翻译: N-甲硅烷基烷基 - 天冬氨酸酯类的某些成员当用于端基聚氨酯聚合物时,提供了与同类有机官能硅烷的其它成员相比具有明显改善的物理性能改善的可湿气固化的一部分密封剂配方。 更具体地说,用二丁基或二乙基马来酸酯/伯氨基烷基硅烷加成产物封端的聚氨酯聚合物提供密封剂,其基本上优于使用与其它烯烃羧酸酯(马来酸二甲酯,巴豆酸二甲酯)或腈(丙烯腈)/伯氨基烷基 硅烷加成产物。 另外,加入马来酸二丁酯或二乙基二烷基硅烷封端的聚合物的密封剂配方在伸长率和拉伸强度性能方面都表现出意想不到的改进。 马来酸二丁酯和马来酸二甲酯基聚合物显着提高了抗撕裂性。