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    • 11. 发明授权
    • Toner processes using in-situ tricalcium phospate
    • 使用原位磷酸三钙的调色剂过程
    • US5925488A
    • 1999-07-20
    • US972380
    • 1997-11-18
    • Raj D. PatelGrazyna E. Kmieckik-LawrynowiczAnthony J. PaineT. Hwee Ng
    • Raj D. PatelGrazyna E. Kmieckik-LawrynowiczAnthony J. PaineT. Hwee Ng
    • G03G9/087G03G9/08
    • G03G9/0804Y10S977/788
    • A process for the preparation of toner which comprises(i) preparing a pigment dispersion comprised of a pigment dispersed in an ionic surfactant;(ii) shearing said pigment dispersion with a latex or emulsion blend comprised of resin particles and a counterionic surfactant;(iii) heating the above sheared blend below the glass transition temperature (Tg) of said resin particles to form electrostatically bound toner size aggregates;(iv) adding a stabilizer of in situ tricalcium phosphate solid particulants generated from a solution of calcium chloride and trisodium phosphate;(v) heating the mixture of (iii) and (iv) above about the Tg of the resin particles to obtain toner size particles comprised of resin and pigment;(vi) washing with an acid to dissolve the trisodium phosphate; and(vii) optionally washing with water, and optionally drying the toner obtained.
    • 一种制备调色剂的方法,其包括(i)制备由分散在离子表面活性剂中的颜料组成的颜料分散体; (ii)用由树脂颗粒和抗衡离子表面活性剂组成的胶乳或乳液共混物剪切所述颜料分散体; (iii)将上述剪切混合物加热到所述树脂颗粒的玻璃化转变温度(Tg)以下以形成静电结合的调色剂尺寸聚集体; (iv)加入由氯化钙和磷酸三钠生成的原位磷酸三钙固体颗粒的稳定剂; (v)加热上述(iii)和(iv)的混合物约树脂颗粒的Tg,得到由树脂和颜料组成的调色剂尺寸颗粒; (vi)用酸洗涤以溶解磷酸三钠; 和(vii)任选地用水洗涤,并任选地干燥获得的调色剂。
    • 19. 发明授权
    • Processes for preparing copolymers
    • 制备共聚物的方法
    • US6124409A
    • 2000-09-26
    • US929457
    • 1992-08-12
    • T. Hwee NgHadi K. MahabadiMan C. TamGregory J. KovacsEric M. PetersRafik O. Loutfy
    • T. Hwee NgHadi K. MahabadiMan C. TamGregory J. KovacsEric M. PetersRafik O. Loutfy
    • C08F2/00C08F2/06C08F2/18C08F4/38
    • C08F2/001C08F2/06Y10S526/921
    • Disclosed is a process for preparing copolymers which comprises, in the order stated: (1) adding monomers containing unsaturated carbon-to-carbon bonds, a first polymerization initiator, a second polymerization initiator, and a solvent to a reaction vessel; (2) purging the resulting solution with an inert gas; (3) sealing the reaction vessel and pressurizing it by addition of an inert gas to a pressure of from about 20 to about 600 kilopascals over ambient atmospheric pressure; (4) maintaining the temperature within the pressurized reaction vessel at a temperature of from about 50 to about 100.degree. C. for a period of from about 60 to about 300 minutes; (5) thereafter maintaining the temperature within the pressurized reaction vessel at a temperature of from about 80 to about 115.degree. C. for a period of from about 30 to about 300 minutes, wherein the temperature in step (5) is higher than the temperature in step (4); and (6) subsequently maintaining the temperature within the pressurized reaction vessel at a temperature of from about 115 to about 160.degree. C. for a period of from about 30 to about 180 minutes, wherein the temperature in step (6) is higher than the temperature in step (5). Polymers prepared according to the process of the present invention can be particularly useful in migration imaging members.
    • 公开了一种制备共聚物的方法,其顺序包括:(1)向反应容器中加入含有不饱和碳 - 碳键的单体,第一聚合引发剂,第二聚合引发剂和溶剂; (2)用惰性气体吹扫所得溶液; (3)密封反应容器并通过在环境大气压下加入约20至约600千帕斯卡的惰性气体对其加压; (4)将加压反应容器内的温度维持在约50至约100℃的温度下约60至约300分钟; (5)之后将加压反应容器内的温度保持在约80至约115℃的温度下约30至约300分钟的时间,其中步骤(5)中的温度高于温度 在步骤(4)中; 和(6)随后将加压反应容器内的温度保持在约115至约160℃的温度下约30至约180分钟的时间,其中步骤(6)中的温度高于 步骤(5)中的温度。 根据本发明的方法制备的聚合物可以在迁移成像构件中特别有用。
    • 20. 发明授权
    • Toner adsorption processes
    • 调色剂吸附过程
    • US5928832A
    • 1999-07-27
    • US219027
    • 1998-12-23
    • Paul F. SmithBeng S. OngT. Hwee Ng
    • Paul F. SmithBeng S. OngT. Hwee Ng
    • G03G9/08G03G9/097G03G9/087
    • G03G9/0975G03G9/0804G03G9/0806
    • A process for the preparation of toner comprising mixing a colorant dispersion and a latex emulsion, and wherein there is accomplished a heating below about or equal to about the resin latex glass transition temperature to form aggregates followed by heating above about or equal to about the resin glass transition temperature to coalesce the aggregates; separating the toner formed, and subsequently adding to the toner in the form of a slurry a mixture of monomer and cleavable surfactant, cleaving the surfactant under basic conditions, and allowing the monomer to adsorb on the toner, then polymerizing and cooling, and wherein the cleavable surfactant is of the Formulas (I) or (II), or optionally mixtures thereof ##STR1## wherein R.sup.1 is a hydrophobic aliphatic, or hydrophobic aromatic group; R.sup.2 is selected from the group consisting of hydrogen, alkyl, aryl, alkylaryl, and alkylarylalkyl; R.sup.3 is hydrogen or alkyl; A is a hydrophilic polymer chain, and m represents the number of A segments
    • 一种制备调色剂的方法,包括混合着色剂分散体和胶乳乳液,并且其中完成低于大约或等于约树脂胶乳玻璃化转变温度的加热,以形成聚集体,然后加热至大约或等于约树脂 玻璃化转变温度以聚集聚集体; 分离形成的调色剂,然后将浆料形式的调色剂加入到单体和可切割表面活性剂的混合物中,在碱性条件下裂解表面活性剂,并使单体吸附在调色剂上,然后聚合和冷却,其中 可分解的表面活性剂是式(I)或(II)或其任选的其中R 1是疏水性脂族或疏水性芳族基团的混合物; R2选自氢,烷基,芳基,烷基芳基和烷基芳基烷基; R3是氢或烷基; A是亲水性聚合物链,m表示A链段的数目