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    • 45. 发明申请
    • POLYMER DISPERSIONS
    • 聚合物分散剂
    • US20160145430A1
    • 2016-05-26
    • US14948791
    • 2015-11-23
    • CELANESE INTERNATIONAL CORPORATION
    • Matthias JunkUlrich Desor
    • C08L33/12C08J3/12C09D133/12
    • C08L33/12C08F2/001C08F220/18C08F265/06C08J3/12C08J2333/12C08L2201/54C08L2205/025C08L2308/00C09D5/02C09D133/12C09D151/003C08F2220/1825C08F220/14C08F220/58C08F220/06C08F220/68
    • A polymer dispersion is produced by polymerization of at least two different ethylenically unsaturated monomers in at least first and second stages. The polymer produced in the first stage comprises 25 to 60% by weight of the total monomer composition and has a uniform glass transition temperature from −30° C. to 0° C. The polymer produced in the second stage comprises 40 to 75% by weight of the total monomer composition and has a variable monomer composition such that the second stage polymer has a non-uniform glass transition temperature which varies between a first value from −30° to +10° C. and second value of at least +70° C. Any polymer produced in further polymerization stages comprises no more than 10% by weight of the total monomer composition and the glass transition temperature of the hypothetical uniform copolymer produced by the total monomer composition is in the range from 0° C. to 25° C.
    • 聚合物分散体通过在至少第一和第二阶段中聚合至少两种不同的烯属不饱和单体来制备。 在第一阶段中生产的聚合物包含总单体组合物的25至60重量%,并且具有从-30℃至0℃的均匀玻璃化转变温度。在第二阶段中生产的聚合物包含40至75% 总单体组合物的重量,并且具有可变的单体组成,使得第二级聚合物具有在-30°至+ 10°C的第一值之间变化的不均匀的玻璃化转变温度,并且第二值至少为+70 在另外的聚合阶段中产生的任何聚合物包含不超过总单体组合物的10重量%,并且由总单体组成产生的假想均匀共聚物的玻璃化转变温度在0℃至25℃的范围内 C。