公开(公告)号：US5859109A

公开(公告)日：1999-01-12

申请号：US74790

申请日：1998-05-08

申请人： Edward D. Weil ,  Menachem Lewin

发明人： Edward D. Weil ,  Menachem Lewin

IPC分类号： C08K3/22 ,  C08K5/3492 ,  C08L23/02 ,  C08L61/00 ,  C08K3/10

CPC分类号： C08K3/22 ,  C08K5/34922 ,  C08L23/02 ,  C08K2003/2217 ,  C08L61/00

摘要： A flame retardant polyolefin composition comprises at least about 25% by weight magnesium hydroxide and, preferably, at least about 30%, at least about 5% by weight melamine and, preferably, at least about 20%, and at least about 0.5% by weight novolac and, preferably at least about 1%.

摘要翻译： 阻燃聚烯烃组合物包含至少约25重量％的氢氧化镁，优选至少约30重量％，至少约5重量％的三聚氰胺，优选至少约20重量％，和至少约0.5重量％ 重量酚醛清漆，优选至少约1％。

公开(公告)号：US4120141A

公开(公告)日：1978-10-17

申请号：US819529

申请日：1977-07-27

申请人： George Lopatin ,  Menachem Lewin

发明人： George Lopatin ,  Menachem Lewin

IPC分类号： D02G1/02

CPC分类号： D02G1/022

摘要： An improved process is provided for simultaneously drawing and false-twist texturing of partially oriented polyester yarn. The process is of the type wherein the yarn from a supply source is passed through a yarn feed system; a heating zone in which the yarn is heated to a temperature of from about 175.degree. to about 235.degree. C; a cooling zone in which the yarn is cooled to a temperature below about 80.degree. C; a false-twisting means; and take-up means whereby the yarn is drawn to a desired draw ratio; to winding up means; and is characterized in that the yarn emerging from said heating zone and before entering said cooling zone is passed through a heat-maintenance zone, in which the yarn is maintained at a temperature and for a time sufficient to permit substantially complete crystallization of the yarn so that the fully-drawn textured yarn product has a tenacity of at least 3.5 gram per denier. Apparatus for carrying out said improved process is also provided.

摘要翻译： 提供了一种改进的方法，用于同时拉伸和部分取向的聚酯纱线的假捻变形。 该方法是其中来自供应源的纱线通过喂纱系统的类型; 加热区，其中纱线被加热到约175℃至约235℃的温度; 将纱线冷却至低于约80℃的冷却区域; 假捻手段; 以及卷取装置，由此将纱线拉伸至所需的拉伸比; 清理手段; 其特征在于，从所述加热区域出来并在进入所述冷却区域之前的纱线通过热维持区域，其中纱线保持在足以允许纱线基本上完全结晶的温度和时间 完全拉伸的变形纱产品具有至少3.5克/旦尼尔的强度。 还提供了用于执行所述改进过程的装置。

公开(公告)号：US20100256272A1

公开(公告)日：2010-10-07

申请号：US12723984

申请日：2010-03-15

申请人： Menachem Lewin ,  Yong Tang

发明人： Menachem Lewin ,  Yong Tang

IPC分类号： C08K3/34 ,  C08K5/5415

CPC分类号： C08J5/005 ,  B82Y30/00

摘要： A method for preparing nanocomposites and nanocomposite polymeric products by dispersing nanoparticles in a polymer either by melt processing or by solution processing and bringing about migration of the nanoparticles from the bulk interior to the surface of the nanocomposites so as to produce a new asymmetric type of nanocomposite in which the concentration of the nanoparticles on the surface is many times higher than in the interior bulk of the nanocomposite. These surfaces impart highly enhanced properties to the nanocomposites as compared to the pristine polymer and to nanocomposites that have not undergone the migration process, including stability against aging, longer shelf life, higher hydrophobicity, higher wear resistance, higher hardness and lower friction. The new surfaces of the nanocomposite polymeric products are produced by inducing migration of the nanoparticles to the surface thereby producing a concentration gradient below the surface.

摘要翻译： 一种制备纳米复合材料和纳米复合聚合物的方法，其通过熔融加工或溶液处理将纳米颗粒分散在聚合物中，并使纳米颗粒从本体内部迁移到纳米复合材料的表面，从而产生新的不对称型纳米复合材料 其中表面上的纳米颗粒的浓度比纳米复合材料的内部体积高出许多倍。 与原始聚合物相比，这些表面与纳米复合材料相比具有非常高的性能，并且对于没有经历迁移过程的纳米复合材料，包括对老化的稳定性，更长的保存期限，更高的疏水性，更高的耐磨性，更高的硬度和更低的摩擦力，赋予了纳米复合材料的高度增强的性能。 通过诱导纳米颗粒向表面的迁移而产生纳米复合聚合物产品的新表面，从而在表面下方产生浓度梯度。

公开(公告)号：US4066387A

公开(公告)日：1978-01-03

申请号：US661926

申请日：1976-02-27

申请人： Menachem Lewin ,  Hilda Guttmann

发明人： Menachem Lewin ,  Hilda Guttmann

IPC分类号： B01D67/00 ,  B01J20/22 ,  B29C71/00 ,  C08J7/00 ,  C08J7/12 ,  C08J7/14 ,  C08J9/06 ,  C08J9/12 ,  D06M11/09 ,  D06P5/22 ,  D06P5/00 ,  B05D3/04

CPC分类号： B01D67/003 ,  B01D67/0023 ,  B01J20/22 ,  C08J7/12 ,  C08J7/126 ,  C08J9/06 ,  C08J9/12 ,  D06M11/09 ,  D06P5/22 ,  B01D2323/08 ,  B01D2323/12 ,  B01D2325/38 ,  C08J2323/06 ,  Y10S521/905 ,  Y10S8/922

摘要： A method of improving the sorption capacity of a substantially hydrophobic, thermoplastic polymer, which comprises introducing into the polymer a halogen by contacting the polymer with a solution containing the halogen under conditions which avoid chemical reaction of the halogen with the polymer, separating the free halogen-containing polymer from the solution, and contacting the polymer with a reagent which pervades the polymer and reacts with the free halogen contained therein so as to produce a gas as one of the reaction products. The product polymers have increased sorption capacity and improved dyeability and are capable of sorbing and retaining useful substances such as medicaments, pesticides and perfumes.

公开(公告)号：US20100249309A1

公开(公告)日：2010-09-30

申请号：US12593813

申请日：2008-04-02

申请人： Menachem Lewin ,  Yong Tang

发明人： Menachem Lewin ,  Yong Tang

IPC分类号： C08K3/34

CPC分类号： C08J5/005 ,  B82Y30/00

摘要： A method for preparing nanocomposites and nanocomposite polymeric products by dispersing nanoparticles in a polymer either by melt processing or by solution processing and bringing about migration of the nanoparticles from the bulk interior to the surface of the nanocomposites so as to produce a new asymetric type of nanocomposite in which the concentration of the nanoparticles on the surface is many times higher than in the interior bulk of the nanocomposite. These surfaces impart highly enhanced properties to the nanocomposites as compared to the pristine polymer and to nanocomposites that have not undergone the migration process, including stability against aging, longer shelf life, higher hydrophobicity, higher wear resistance, higher hardness and lower friction. The new surfaces of the nanocomposite polymeric products are produced by inducing migration of the nanoparticles to the surface thereby producing a concentration gradient below the surface.

摘要翻译： 一种制备纳米复合材料和纳米复合聚合物的方法，其通过熔融加工或通过溶液处理将纳米颗粒分散在聚合物中并使纳米颗粒从本体内部迁移到纳米复合材料的表面，从而产生新的不对称型纳米复合材料 其中表面上的纳米颗粒的浓度比纳米复合材料的内部体积高出许多倍。 与原始聚合物相比，这些表面与纳米复合材料相比具有非常高的性能，并且对于没有经历迁移过程的纳米复合材料，包括对老化的稳定性，更长的保存期限，更高的疏水性，更高的耐磨性，更高的硬度和更低的摩擦力，赋予了纳米复合材料的高度增强的性能。 通过诱导纳米颗粒向表面的迁移而产生纳米复合聚合物产品的新表面，从而在表面下方产生浓度梯度。

公开(公告)号：US5424344A

公开(公告)日：1995-06-13

申请号：US177883

申请日：1994-01-05

申请人： Menachem Lewin

发明人： Menachem Lewin

IPC分类号： C08K3/00 ,  C08K5/00 ,  C08K5/36 ,  C08K5/43 ,  C08K7/00 ,  C08K7/02 ,  C08L23/00 ,  C08L67/00 ,  C08L69/00 ,  C08L71/12 ,  C08L75/00 ,  C08L75/02 ,  C08L77/00 ,  C08L79/08 ,  C08L81/00 ,  C08L81/04 ,  C08L81/06 ,  C08L101/00 ,  C09D5/46 ,  C08K5/46 ,  C08K5/41

CPC分类号： C08L77/00 ,  C08K5/0066 ,  C08K5/43

摘要： A flame retardant polymer composition comprising at least one polymer selected from the group consisting of a polyamide, polyolefin, polyester, polyacrylic, polystyrene, polyurethane and polycarbonate, a flame retardant effective amount of an additive comprising at least one(a) hexavalent oxygenated sulfur compound and optionally at least one of(b) a char forming agent,(c) a metal compound,(d) a filler or reinforcing agent, and(e) a flow modifier.By excluding halogens and phosphorus beneficial results are achieved without the negative consequences attending their presence.

摘要翻译： 包含至少一种选自聚酰胺，聚烯烃，聚酯，聚丙烯酸，聚苯乙烯，聚氨酯和聚碳酸酯的聚合物的阻燃剂聚合物组合物，阻燃剂有效量的添加剂，其包含至少一种（a）六价氧化硫化合物 和（b）成炭剂，（c）金属化合物，（d）填料或增强剂，和（e）流动改性剂中的至少一种。 通过排除卤素和磷的有益效果，没有造成负面后果的存在。

公开(公告)号：US06528558B2

公开(公告)日：2003-03-04

申请号：US09909268

申请日：2001-07-19

申请人： Menachem Lewin

发明人： Menachem Lewin

IPC分类号： C08K53492

CPC分类号： C08K5/3492 ,  C08K3/22 ,  C08K3/32 ,  C08K5/43 ,  C08K2003/323

摘要： Compositions are disclosed for the flame retardation of polymeric compositions including fillers such as glass fibers. The compositions contain a flame retarding effective additive of at least one polyphosphate, a sulfur containing compound, catalyst and a nitrogen containing compound such as melamine.

公开(公告)号：US5279816A

公开(公告)日：1994-01-18

申请号：US796160

申请日：1991-11-22

申请人： John A. Church ,  Michael Prencipe ,  Menachem Lewin

发明人： John A. Church ,  Michael Prencipe ,  Menachem Lewin

IPC分类号： A61K8/00 ,  A61C20060101 ,  A61K20060101 ,  A61K6/00 ,  A61K8/22 ,  A61K8/38 ,  A61K8/40 ,  A61K8/42 ,  A61Q11/00 ,  A61K7/16 ,  A61K7/20

CPC分类号： A61K8/38 ,  A61Q11/00

摘要： An oral composition effective in whitening teeth comprising an amount of peroxyacetic acid effective to effect improved whitening of teeth.

摘要翻译： 一种有效美白牙齿的口服组合物，其含有一定量的过氧乙酸，其有效地改善牙齿美白。