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Patent Agency Ranking
公开(公告)号：US09512286B2
公开(公告)日：2016-12-06
申请号：US14700387
申请日：2015-04-30
Applicant: Yosry A. Attia
Inventor： Yosry A. Attia
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: 制备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，加入聚乙烯加热至所述聚乙烯溶解温度的溶剂 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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公开(公告)号：US20150259499A1
公开(公告)日：2015-09-17
申请号：US14727905
申请日：2015-06-02
Applicant: Yosry A. Attia
Inventor： Yosry A. Attia
CPC classification number: C08J9/28 , C08J2201/0502 , C08J2201/0524 , C08J2205/026 , C08J2323/06 , C08J2323/12 , C08J2327/20 , C08J2331/04 , D03D15/00 , Y10T442/3325
Abstract: Polyethylene aerogels and aerogel fiber webs have a high degree of molecular alignment and interconnected fibers, which offer good mechanical strength and high porosity with open interconnected three-dimensional pore structure of the aerogel fibers. The high porosity of the aerogel fibers forming the web, offer a distinct advantage over solid fibers and fiber webs formed from polymer melts, or other non-gel form of polymer solutions. In this procedure, the polymer in solution is made into cross-linked gel with three-dimensional open pore structure before introducing it to the fiber web making process.
Abstract translation: 聚乙烯气凝胶和气凝胶纤维网具有高度的分子取向和互连的纤维，其提供良好的机械强度和高孔隙率，其中气凝胶纤维具有开放的相互连接的三维孔结构。 形成纤维网的气凝胶纤维的高孔隙率比固体纤维和由聚合物熔体或其它非凝胶形式的聚合物溶液形成的纤维网具有显着的优点。 在该方法中，将溶液中的聚合物制成具有三维开孔结构的交联凝胶，然后将其引入纤维网制备过程。
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公开(公告)号：US09034934B1
公开(公告)日：2015-05-19
申请号：US13483475
申请日：2012-05-30
Applicant: Yosry A. Attia
Inventor： Yosry A. Attia
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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公开(公告)号：US08993537B2
公开(公告)日：2015-03-31
申请号：US13611339
申请日：2012-09-12
Applicant: Zhilian Yue , Feng Wen , Hanry Yu
Inventor： Zhilian Yue , Feng Wen , Hanry Yu
CPC classification number: B32B3/26 , A61L27/20 , A61L27/56 , C08B11/20 , C08J9/28 , C08J2201/024 , C08J2201/026 , C08J2201/0484 , C08J2201/0524 , C08J2205/044 , C08J2207/10 , C08J2301/28 , C08L1/14 , Y10T428/249921 , Y10T428/249978 , Y10T428/249979 , C08L1/28
Abstract: Scaffold comprises a polymer defining macropores and comprising hydroxypropylcellulose partially substituted by a substituent comprising a self-crosslinkable group, which is crosslinked through the self-crosslinkable group. The macropores have an average pore size larger than 50 microns and are at least partially interconnected. In one method, bicontinuous emulsion comprising a continuous aqueous phase and a continuous polymer phase is formed. The polymer phase comprises hydroxypropylcellulose partially substituted by a substituent comprising a self-crosslinkable group, and is crosslinked through the self-crosslinkable group to form a polymer defining at least partially interconnected pores. In another method, phase separation is induced in a solution comprising a polymer precursor and water to form a bicontinuous emulsion comprising a continuous polymer phase and a continuous aqueous phase. The polymer precursor comprises a self-crosslinkable group and is crosslinked through the self-crosslinkable group in the emulsion to form a polymer defining at least partially interconnected macropores.
Abstract translation: 脚手架包含限定大孔的聚合物，并且包含部分由包含自交联基团的取代基取代的羟丙基纤维素，所述取代基通过自交联基团交联。 大孔具有大于50微米的平均孔径并且至少部分互连。 在一种方法中，形成包含连续水相和连续聚合物相的双连续乳液。 聚合物相包含部分由包含自交联基团的取代基取代的羟丙基纤维素，并且通过自交联基团交联以形成限定至少部分互连的孔的聚合物。 在另一种方法中，在包含聚合物前体和水的溶液中诱导相分离以形成包含连续聚合物相和连续水相的双连续乳液。 聚合物前体包含自交联基团，并且通过乳液中的自交联基团交联以形成限定至少部分互连的大孔的聚合物。
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公开(公告)号：US2597011A
公开(公告)日：1952-05-20
申请号：US17655250
申请日：1950-07-28
Applicant: US AGRICULTURE
Inventor： MACMASTERS MAJEL M , HOAGLUND VIRGINIA E
CPC classification number: C08J9/28 , A61L15/28 , A61L15/425 , C08J2201/0524 , C08J2303/02 , C08L3/02
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