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    Preparation of phenol-formaldehyde resin beads using suspension or emulsion polymerization
    69.
    发明授权
    Preparation of phenol-formaldehyde resin beads using suspension or emulsion polymerization 有权
    使用悬浮液或乳液聚合制备酚醛树脂珠

    公开(公告)号：US09133295B2

    公开(公告)日：2015-09-15

    申请号：US14092267

    申请日：2013-11-27

    Applicant: Georgia-Pacific Chemicals LLC

    Inventor： Shahid P. Qureshi ,  Xing Dong ,  Charles C. Chan ,  Joseph Frank Ludvik

    IPC: C08G8/10 ,  C08G8/32 ,  C08G8/22 ,  C08G85/00

    CPC classification number: C08G8/32 ,  C08G8/10 ,  C08G8/22 ,  C08G85/004 ,  C08J9/16 ,  C08J9/28 ,  C08J2201/026 ,  C08J2201/0482 ,  C08J2201/0502 ,  C08J2205/02 ,  C08J2361/06

    Abstract: Methods for making polymer particles in gel form via an emulsion and/or suspension polymerization are provided. In at least one specific embodiment, the method can include reacting a first reaction mixture comprising a phenolic monomer, an aldehyde monomer, and a first catalyst to produce a prepolymer. The method can also include combining the prepolymer with a carrier fluid and a second catalyst to produce a second reaction mixture. The second catalyst can include a dicarboxylic acid, an anhydride, a dihydroxybenzene, or any mixture thereof. The method can also include polymerizing the prepolymer to form polymer particles in gel form.

    Abstract translation: 提供了通过乳液和/或悬浮聚合制备凝胶形式的聚合物颗粒的方法。 在至少一个具体实施方案中，该方法可以包括使包含酚单体，醛单体和第一催化剂的第一反应混合物反应以产生预聚物。 该方法还可以包括将预聚物与载体流体和第二催化剂组合以产生第二反应混合物。 第二催化剂可以包括二羧酸，酸酐，二羟基苯或其任何混合物。 该方法还可包括聚合预聚物以形成凝胶形式的聚合物颗粒。

    Polyethylene Aerogel and Method of Production
    70.
    发明申请
    Polyethylene Aerogel and Method of Production 审中-公开
    聚乙烯气凝胶及其生产方法

    公开(公告)号：US20150247016A1

    公开(公告)日：2015-09-03

    申请号：US14700387

    申请日：2015-04-30

    Applicant: Yosry A. Attia

    Inventor： Yosry A. Attia

    IPC: C08J9/00

    CPC classification number: C08J9/00 ,  C08J9/28 ,  C08J9/33 ,  C08J2201/0482 ,  C08J2201/0524 ,  C08J2205/026 ,  C08J2323/04 ,  C08J2323/06 ,  C08J2323/08

    Abstract: A method for making polyethylene aerogels, including high molecular weight aerogels, commences by in a hydrocarbon solvent (e.g., toluene or benzene) in which polyethylene is insoluble at room temperature, adding polyethylene to the solvent heated to a temperature at which said polyethylene is soluble to form a reaction mixture. A free-radical catalyst is added to the reaction mixture and the reaction mixture is held until the desired gelation of the polyethylene has been achieved. The reaction mixture is cooled to about room temperature; and the hydrocarbon solvent is replaced with a gas (e.g., CO2 or air) to form the polyethylene aerogel. Optionally, the cooled reaction mixture can be contacted with an anti-solvent for polyethylene to replace the hydrocarbon solvent with the anti-solvent. Silica aerogel particles can be encapsulated in polyethylene aerogel by adding the particles to the polyethylene gelation reaction mixture.

    Abstract translation: 制造聚乙烯气凝胶的方法，包括高分子量气凝胶，在烃溶剂（如甲苯或苯）中开始，其中聚乙烯在室温下不溶解，加入聚乙烯加热到所述聚乙烯可溶的温度 以形成反应混合物。 向反应混合物中加入自由基催化剂，并保持反应混合物，直至达到所需的聚乙烯凝胶化。 将反应混合物冷却至约室温; 并且用气体（例如CO 2或空气）代替烃溶剂以形成聚乙烯气凝胶。 任选地，冷却的反应混合物可与用于聚乙烯的反溶剂接触以用抗溶剂代替烃溶剂。 通过将颗粒加入到聚乙烯凝胶化反应混合物中，可以将二氧化硅气凝胶颗粒包封在聚乙烯气凝胶中。

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