会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 81. 发明授权
    • Process for the preparation of macromonomers and macromonomers prepared
by this process
    • 制备本方法制备的大分子和大分子的方法
    • US5066759A
    • 1991-11-19
    • US466438
    • 1990-06-13
    • Hans-Dieter HilleArnold Dobbelstein
    • Hans-Dieter HilleArnold Dobbelstein
    • C08G18/08C08G18/10C08G18/42C08G18/48C08G18/60C08G18/64C08G18/83
    • C08G18/831C08G18/0823C08G18/10C08G18/4263C08G18/4887C08G18/603C08G18/6415
    • The invention relates to a process for the preparation of macromonomers which carry at least two hydroxyl groups at one end. The process comprises(1) reacting a polyester, polyether, polyurethane, polyurea or polyamide prepolymer which has a number average molecular weight of 300 to 3000, preferably 500 to 2000, and contains an average of one terminal hydroxyl or amino group and at least one carboxyl group per molecule with a diisocyanate to form an intermediate which contains an average of one terminal isocyanate group and at least one carboxyl group per molecule, and subsequently reacting this intermediate(2) with a compound which has a molecular weight of 90 to 800, preferably 120 to 300, and contains at least two hydroxyl groups in addition to a group which is reactive to isocyanate groups, to form a macromonomer which carries an average of at least one carboxyl group and, at one end, at least two hydroxyl groups per molecule.
    • PCT No.PCT / EP88 / 00969 Sec。 371日期1990年6月13日 102(e)日期1990年6月13日PCT提交1988年10月27日PCT公布。 公开号WO89 / 04333 日期1989年5月18日。本发明涉及制备在一端具有至少两个羟基的大分子单体的方法。 该方法包括(1)使数均分子量为300至3000,优选500至2000的聚酯,聚醚,聚氨酯,聚脲或聚酰胺预聚物反应,并含有平均一个末端羟基或氨基和至少一个 羧基与二异氰酸酯形成中和体,每分子含有平均一个末端异氰酸酯基和至少一个羧基,随后使该中间体(2)与分子量为90〜800的化合物反应, 优选为120〜300,并且除了与异氰酸酯基反应的基团之外,还含有至少两个羟基,形成携带平均至少一个羧基的大分子单体,一端至少含有两个羟基 分子。