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    • 22. 发明授权
    • Intrachain charge transfer complexes
    • 室内电荷转移络合物
    • US4013623A
    • 1977-03-22
    • US596532
    • 1975-07-16
    • Sam R. TurnerMilan Stolka
    • Sam R. TurnerMilan Stolka
    • C08F20/30C08F220/12G03G5/07C08F220/10C08F220/26
    • C08F20/30C08F220/12G03G5/071Y10S430/10
    • Method for achieving free radical initiated copolymerization of an addition monomer having pendant therefrom a strong donor group with an addition monomer having pendant therefrom a strong acceptor group. Copolymers prepared according to this method can be represented by the following formula: ##STR1## wherein R is hydrogen or methyl;R' is hydrogen or methyl;R" is hydrogen or methyl;R'" is alkyl of 1-10 carbon atoms;R'.sup.v is selected from the group consisting of --NO.sub.2, halogen, --CN and --CF.sub.3 ;X and Y are independently selected from the group consisting of hydrogen, chlorine, bromine, alkyl or 1-4 carbon atoms and phenyl;Z is oxygen or dicyanomethylene;a and b can range from 0-4; andn and m can range from about 5 to about 95 percent.The polymeric compositions prepared according to this method are suitable for use in electrophotography either alone as the primary photoresponsive entity or in combination with other photoconductive materials.
    • 用于实现自由基引发共聚合的方法,其具有从其侧向的强供体基团的加成单体与其上具有强受体基团的加成单体。 根据该方法制备的共聚物可以由下式表示:其中R是氢或甲基; R'是氢或甲基; R“是氢或甲基; R“是1-10个碳原子的烷基; R'v选自-NO 2,卤素,-CN和-CF 3; X和Y独立地选自氢,氯,溴,烷基或1-4个碳原子和苯基; Z是氧或二氰基亚甲基; A和B可以从0-4开始; 而且N和M可以从约5到95%的范围。
    • 23. 发明授权
    • Process for preparation of block copolymers from vinylcarbazoles and
other addition monomers
    • 从乙烯基咔唑和其他加成单体制备嵌段共聚物的方法
    • US3994994A
    • 1976-11-30
    • US551199
    • 1975-02-19
    • Milan Stolka
    • Milan Stolka
    • C08F293/00C08L53/00C08L25/14C08L31/02G03G5/07
    • C08F293/00
    • Process for preparation of block copolymers having photoconductive segments derived from a vinyl monomer and segments derived from a second addition monomer; said addition polymer segment also possibly being photoconductive. A polymer is initially prepared from one of the above monomers whereby the terminal groups of the resultant polymer are capable of generation of free radicals. By the appropriate selection of reaction medium it is possible to use the above free radical generating polymer to initiate polymerization of the second monomer, the polymer of which thereafter precipitates. This polymerization continues in the solid phase thereby preventing free radical decay even after depletion of the second monomer. The free radicals of these "living" polymers are quenched by the addition to the reaction medium of a monomer preferably corresponding to the structural units of the free radical generating polymer. This "heterophase" polymerization system eliminates the need for separate extraction of homopolymer fractions and other impurities from the resultant block copolymer.
    • 制备具有衍生自乙烯基单体的光导部分和衍生自第二加成单体的链段的嵌段共聚物的方法; 所述加成聚合物链段也可能是光导的。 聚合物最初由上述单体之一制备,由此所得聚合物的端基能够产生自由基。 通过适当选择反应介质,可以使用上述产生自由基的聚合物引发其后沉淀的聚合物的第二单体的聚合。 该聚合继续在固相中,从而防止即使在第二单体消耗之后自由基衰变。 这些“活性”聚合物的自由基通过添加到优选对应于产生自由基的聚合物的结构单元的单体的反应介质中淬灭。 这种“异相”聚合体系消除了从得到的嵌段共聚物中分离提取均聚物部分和其它杂质的需要。
    • 29. 发明授权
    • Intrachain charge transfer complexes use in electrophotographic imaging
    • 室内电荷转移复合物用于电子照相成像
    • US4075012A
    • 1978-02-21
    • US716309
    • 1976-08-20
    • Sam R. TurnerMilan Stolka
    • Sam R. TurnerMilan Stolka
    • C08F20/30C08F220/12G03G5/07
    • C08F20/30C08F220/12G03G5/071Y10S430/10
    • Method for achieving free radical initiated copolymerization of an addition monomer having pendant therefrom a strong donor group with an addition monomer having pendant therefrom a strong acceptor group. Copolymers prepared according to this method can be represented by the following formula: ##STR1## WHEREIN R is hydrogen or methyl;R' is hydrogen or methyl;R" is hydrogen or methyl;R'" is alkyl of 1-10 carbon atoms;R'.sup.v is selected from the group consisting of --NO.sub.2, halogen, --CN and --CF.sub.3 ;X and Y are independently selected from the group consisting of hydrogen, chlorine, bromine, alkyl of 1-4 carbon atoms and phenyl;Z is oxygen or dicyanomethylene;a and b can range from 0-4; andn and m can range from about 5 to about 95 percent.The polymeric compositions prepared according to this method are suitable for use in electrophotography either alone as the primary photoresponsive entity or in combination with other photoconductive materials.
    • 用于实现自由基引发共聚合的方法,其具有从其侧向的强供体基团的加成单体与其上具有强受体基团的加成单体。 根据该方法制备的共聚物可以由下式表示:其中R为氢或甲基; R'是氢或甲基; R“是氢或甲基; R“是1-10个碳原子的烷基; R'v选自-NO 2,卤素,-CN和-CF 3; X和Y独立地选自氢,氯,溴,1-4个碳原子的烷基和苯基; Z是氧或二氰基亚甲基; A和B可以从0-4开始; 而且N和M可以从约5到95%的范围。