Method of preparing co-polymer particles
    3.
    发明申请
    Method of preparing co-polymer particles 有权
    制备共聚物颗粒的方法

    公开(公告)号:US20020004554A1

    公开(公告)日:2002-01-10

    申请号:US09821034

    申请日:2001-03-30

    IPC分类号: C08L061/00

    摘要: A one-step, in-situ, process for producing a high solids content emulsion or dispersion of partially or totally crosslinked urea formaldehyde (UF), melamine formaldehyde (MF), or melamine urea formaldehyde (MUF) resin droplets or particles, by forming a reaction mixture of (i) aqueous formaldehyde (formalin), (ii) at least one water-soluble protective colloid, (iii) water and (iv) optionally a surfactant, and mixing the reaction mixture in a reaction vessel; optionally adjusting the initial pH of the reaction mixture according to a desired value as needed; adding (i) urea or substituted urea, (ii) melamine or substituted melamine, or (iii) a mixture thereof, to the reaction mixture; and heating the reaction mixture to a temperature at which condensation takes place between the (i) urea or substituted urea, (ii) the melamine or substituted melamine, or (iii) the mixture thereof, and the formaldehyde to form a urea formaldehyde, melamine formaldehyde or melamine urea formaldehyde resin, and holding the reaction mixture at that temperature or a higher temperature, under mixing, for a period of time sufficient to achieve a desired degree of crosslinking in said urea formaldehyde, melamine formaldehyde or melamine urea formaldehyde resin; and cooling the reaction mixture. The droplet or particle size of the resulting resin dispersion can be controlled and adjusted by way of the present technique to the application requirements.

    摘要翻译: 一步法原位制备高固体含量的乳液或部分或全部交联的脲甲醛(UF),三聚氰胺甲醛(MF)或三聚氰胺脲甲醛(MUF)树脂液滴或颗粒的分散体,通过形成 (i)甲醛水溶液(福尔马林),(ii)至少一种水溶性保护胶体,(iii)水和(iv)任选的表面活性剂)的反应混合物,并将反应混合物混合在反应容器中; 任选地根据需要根据期望的值调节反应混合物的初始pH; 将(i)脲或取代的脲,(ii)三聚氰胺或取代的三聚氰胺或(iii)其混合物加入到反应混合物中; 并将反应混合物加热至(i)尿素或取代的脲,(ii)三聚氰胺或取代的三聚氰胺之间发生冷凝的温度,或(iii)其混合物和甲醛形成脲甲醛,三聚氰胺 甲醛或三聚氰胺脲甲醛树脂,并将该反应混合物在该温度或较高温度下混合,持续足以在所述脲甲醛,三聚氰胺甲醛或三聚氰胺脲甲醛树脂中达到所需程度的交联的时间; 并冷却反应混合物。 所得到的树脂分散体的液滴或颗粒尺寸可以通过本技术对应用要求进行控制和调节。

    Method of preparing co-polymer particles
    4.
    发明授权
    Method of preparing co-polymer particles 失效
    制备共聚物颗粒的方法

    公开(公告)号:US06245853B1

    公开(公告)日:2001-06-12

    申请号:US09571845

    申请日:2000-05-16

    IPC分类号: C08L6124

    摘要: A one-step, in-situ, process for producing a high solids content emulsion or dispersion of partially or totally crosslinked urea formaldehyde or melamine formaldehyde resin droplets or particles, by forming a reaction mixture of (i) aqueous formaldehyde (formalin), (ii) at least one water-soluble protective colloid, (iii) water and (iv) optionally a surfactant, and mixing the reaction mixture in a reaction vessel; optionally adjusting the initial pH of the reaction mixture according to a desired value as needed; adding (a) urea, substituted urea, or a mixture thereof, or (b) melamine, substituted melamine, or a mixture thereof, to the reaction mixture; and heating the reaction mixture to a temperature at which condensation takes place between the (a) urea, substituted urea, or the mixture thereof, or (b) melamine substituted melamine, or the mixture thereof, and the formaldehyde to form a urea formaldehyde or melamine formaldehyde resin, and holding the reaction mixture at that temperature or a higher temperature, under mixing, for a period of time sufficient to achieve a desired degree of crosslinking in said urea formaldehyde or melamine formaldehyde resin; and cooling the reaction mixture. The droplet or particle size of the resulting resin dispersion can be controlled and adjusted by way of the present technique to the application requirements.

    摘要翻译: 通过形成(i)甲醛水溶液(福尔马林)((甲醛)),(甲醛)水溶液的反应混合物,生产高固体含量乳液或部分或全部交联的脲甲醛或三聚氰胺甲醛树脂液滴或颗粒的分散体的一步原位方法, ii)至少一种水溶性保护胶体,(iii)水和(iv)任选的表面活性剂,并将反应混合物混合在反应容器中; 任选地根据需要根据期望的值调节反应混合物的初始pH; 将(a)脲,取代的脲或其混合物,或(b)三聚氰胺,取代的三聚氰胺或其混合物加入到反应混合物中; 将反应混合物加热至(a)尿素,取代的脲或其混合物之间发生冷凝的温度,或(b)三聚氰胺取代的三聚氰胺或其混合物和甲醛形成脲甲醛或 三聚氰胺甲醛树脂,并将该反应混合物在该温度或更高温度下混合,在足以在所述脲甲醛或三聚氰胺甲醛树脂中达到所需程度的交联的时间; 并冷却反应混合物。 所得到的树脂分散体的液滴或颗粒尺寸可以通过本技术对应用要求进行控制和调节。

    Colorant compositions and processes
    5.
    发明授权
    Colorant compositions and processes 失效
    着色剂组合物和工艺

    公开(公告)号:US5411802A

    公开(公告)日:1995-05-02

    申请号:US145492

    申请日:1993-10-29

    摘要: A process for making solid colored particles by preparing a reaction solution in water comprising formaldehyde, urea, a cyclic polyamine functional triazine compound, and acid. A dye can be incorporated into the reaction solution if a color other than white is desired. Particles are formed having an average particle size between 1 and 70 microns without the need to resort to crushing to break up agglomerates. Particles made by this process provide excellent color and are easily washable from a substrate when incorporated into a washable formulation.Additionally, it has been found that the incorporation of colored microcapsules of average size of 1-70 microns where the color is located primarily on or in the shell of the microcapsule also provides excellent washable compositions when incorporated into a washable formulation.

    摘要翻译: 通过在水中制备包含甲醛,尿素,环状多胺功能性三嗪化合物和酸的反应溶液来制备固体着色颗粒的方法。 如果需要除白色之外的颜色,可以将染料掺入反应溶液中。 形成平均颗粒尺寸为1至70微米的颗粒,而无需使用破碎来破碎附聚物。 通过该方法制备的颗粒提供优异的颜色,并且当掺入可洗涤制剂中时可以容易地从基材中洗涤。 此外,已经发现,当将颜色主要位于微胶囊的壳体上或其中的微胶囊壳体中时,加入平均尺寸为1-70微米的有色微胶囊也可提供优异的可洗涤组合物,当掺入可洗涤制剂中时。