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    Self-Bonding Polypridobismidazole Pulp and a Process for Making Same
    41.
    发明申请
    Self-Bonding Polypridobismidazole Pulp and a Process for Making Same 审中-公开
    自粘多吡啶并吡喃浆及其制备方法

    公开(公告)号：US20090101295A1

    公开(公告)日：2009-04-23

    申请号：US12084024

    申请日：2006-12-19

    Applicant: Edmund A. Merriman ,  Kevin A. Mulcahy ,  Mikhail R. Levit

    Inventor： Edmund A. Merriman ,  Kevin A. Mulcahy ,  Mikhail R. Levit

    IPC: D21B1/04 ,  C08L39/04 ,  C08L77/00 ,  C08G73/10 ,  D21H13/12 ,  D21H13/26

    CPC classification number: D21H13/20

    Abstract: The invention concerns a fibrous pulp comprising polypyridobisimidazole fiber, the pulp having a Canadian Standard Freeness (CSF) of no more than about 650 ml, a specific surface area of from 0.5 to 50 square meters per gram, a length-weighted average length of from 0.5 to 2.0 mm, and a equilibrium moisture content of greater than 10 percent by weight. Also provided are papers made from such pulp and processes for making the pulp.

    Abstract translation: 本发明涉及包含聚吡啶并二咪唑纤维的纤维纸浆，该纸浆具有不超过约650ml的加拿大标准游离度（CSF），比表面积为0.5至50平方米/克，长度加权平均长度为 0.5〜2.0mm，平衡含水量大于10重量％。 还提供了由这种纸浆制造的纸张和用于制造纸浆的方法。

    Processes for making shaped honeycomb and honeycombs made thereby
    42.
    发明申请
    Processes for making shaped honeycomb and honeycombs made thereby 审中-公开
    由此制成成形蜂窝和蜂窝的方法

    公开(公告)号：US20080145602A1

    公开(公告)日：2008-06-19

    申请号：US11640046

    申请日：2006-12-15

    Applicant: Gary Lee Hendren ,  Mikhail R. Levit ,  Subhotosh Khan

    Inventor： Gary Lee Hendren ,  Mikhail R. Levit ,  Subhotosh Khan

    IPC: B32B3/12

    CPC classification number: B29D99/0089 ,  B29C51/082 ,  B29C53/04 ,  B29C2791/001 ,  B29L2031/608 ,  Y10T156/1003 ,  Y10T428/24149

    Abstract: This invention relates to processes for making a honeycomb comprising cells having edges forming a face of the honeycomb, the face defined by a plurality of points and having an area of curvature wherein at least two of the points are located in different tangential planes, comprising the steps of: a) bonding a plurality of sheets along parallel lines of adhesive, the sheets comprising 5 to 50 parts by weight thermoplastic material having a melting point of from 120° C. to 350° C., and 50 to 95 parts by weight high modulus fiber having a modulus of 600 grams per denier (550 grams per dtex) or greater, based on the total amount of thermoplastic material and high modulus fiber in the walls; b) pulling the bonded sheets apart in directions perpendicular to the plane of the sheets to form a honeycomb having cells; c) heating the honeycomb to soften the thermoplastic material; d) bending, molding, or forming the honeycomb in a mold or over a form having an area of curvature; and e) cooling the honeycomb to retain the shape of the area of curvature of the mold or form. Other processes for making a honeycomb include steps for impregnation, b-staging, and/or curing of the honeycomb with resin.This invention also relates to a shaped honeycomb made by this processes wherein less than 25 percent of the honeycomb cells in the area of curvature have a re-entrant angle of greater than 180°.

    Abstract translation: 本发明涉及一种制造蜂窝体的方法，该蜂窝体包括具有形成蜂窝表面的边缘的蜂窝体，所述蜂窝体的表面由多个点限定并且具有曲率区域，其中至少两个点位于不同的切向平面中，包括 步骤：a）沿着平行的粘合剂线粘合多个片材，所述片材包含5至50重量份的熔点为120℃至350℃的热塑性材料和50至95重量份 基于热塑性材料的总量和壁中的高模量纤维，具有600克/旦尼尔（550克/分特）或更高的模量的高模量纤维; b）沿垂直于片材平面的方向拉动粘合片材以形成具有细胞的蜂窝体; c）加热蜂窝以软化热塑性材料; d）在模具中或在具有曲率面积的形式上弯曲，模制或形成蜂窝体; 和e）冷却蜂窝体以保持模具或形式的曲率区域的形状。 制造蜂窝的其它方法包括用树脂浸渍，b阶段化和/或固化蜂窝的步骤。 本发明还涉及通过该方法制造的成形蜂窝体，其中在曲率区域中小于25％的蜂窝电池具有大于180°的重入角度。

    Honeycomb from paper having a high melt point thermoplastic fiber
    43.
    发明申请
    Honeycomb from paper having a high melt point thermoplastic fiber 有权
    具有高熔点热塑性纤维的纸的蜂窝状

    公开(公告)号：US20080145598A1

    公开(公告)日：2008-06-19

    申请号：US11639548

    申请日：2006-12-15

    Applicant: Mikhail R. Levit ,  Subhotosh Khan ,  Gary Lee Hendren

    Inventor： Mikhail R. Levit ,  Subhotosh Khan ,  Gary Lee Hendren

    IPC: D21H15/02

    CPC classification number: D21H13/10 ,  B32B3/12 ,  B32B27/34 ,  B32B29/06 ,  D21H13/26 ,  D21H15/02 ,  D21H17/48 ,  D21H17/52 ,  Y10S428/902 ,  Y10T428/1303 ,  Y10T428/1352 ,  Y10T428/24149 ,  Y10T428/24165

    Abstract: This invention relates to a honeycomb comprising matrix resin and paper, the paper comprising 50 to 80 parts by weight fibrous material having a modulus of 600 grams per denier (550 grams per dtex) or greater, 0 to 50 parts by weight powdered inorganic material, and 20 parts by weight or greater thermoplastic fiber, the improvement comprising the thermoplastic fiber is a binder for the paper and has a melting temperature above the curing temperature of the matrix resin; a glass transition temperature of greater than 100° C., and the weight average molecular weight of the thermoplastic polymer in the thermoplastic fibers changes 20% or less after being maintained for 10 minutes at the melting temperature.One embodiment of this invention includes an article comprising the aforesaid honeycomb, with such articles including a panel or an aerodynamic structure.

    Abstract translation: 本发明涉及一种包含基质树脂和纸的蜂窝体，该纸包含50至80重量份的纤维材料，其模量为600克/旦（550克/分）或更大，0至50重量份粉末状无机材料， 和20重量份以上的热塑性纤维，包括热塑性纤维的改进是用于纸的粘合剂，其熔融温度高于基体树脂的固化温度; 玻璃化转变温度大于100℃，热塑性纤维中的热塑性聚合物的重均分子量在熔融温度下保持10分钟后变化20％以下。 本发明的一个实施例包括一种包含上述蜂窝体的制品，其中包括面板或空气动力学结构的制品。

    Paper comprising PIPD floc and process for making the same
    46.
    发明授权
    Paper comprising PIPD floc and process for making the same 失效
    包含PIPD絮凝剂的纸张及其制造方法

    公开(公告)号：US08444814B2

    公开(公告)日：2013-05-21

    申请号：US12084007

    申请日：2006-12-19

    Applicant: Mikhail R. Levit

    Inventor： Mikhail R. Levit

    IPC: D21H13/20

    CPC classification number: D21H13/26 ,  D21H15/02 ,  D21H21/18

    Abstract: The invention concerns a paper comprising polypyridobisimidazole floc having a length of from 1.0 to 15 mm, where the apparent density of the paper is from 0.1 to 0.4 g/cm3 and the tensile strength of the paper in N/cm is at least 0.000052X*Y, where X is the volume portion of polypyridobisimidazole in the total solids of the paper in % and Y is basis weight of the paper in g/m2.

    Abstract translation: 本发明涉及包含长度为1.0至15mm的聚吡啶二咪唑絮凝物的纸，其中纸张的表观密度为0.1至0.4g / cm 3，纸张的拉伸强度为N / cm至少为0.000052X * Y，其中X是聚酰胺二咪唑在纸的总固体中的体积百分比，Y是纸的单位面积重量/ g。

    MULTILAYER STRUCTURE USEFUL FOR ELECTRICAL INSULATION
    49.
    发明申请
    MULTILAYER STRUCTURE USEFUL FOR ELECTRICAL INSULATION 有权
    用于电绝缘的多层结构

    公开(公告)号：US20110316660A1

    公开(公告)日：2011-12-29

    申请号：US12825810

    申请日：2010-06-29

    Applicant: Mikhail R. Levit ,  Byoung Sam Kang

    Inventor： Mikhail R. Levit ,  Byoung Sam Kang

    IPC: H01F27/00 ,  B32B23/04

    CPC classification number: B32B5/16 ,  B32B5/26 ,  B32B23/02 ,  B32B23/10 ,  B32B2260/021 ,  B32B2260/046 ,  B32B2262/0269 ,  B32B2262/062 ,  B32B2307/308 ,  B32B2307/50 ,  B32B2307/732 ,  H01B3/305 ,  H01B3/47 ,  H01F27/323 ,  Y10T428/31779

    Abstract: A multilayer structure contains (a) a first layer of aramid and cellulose wherein (i) the aramid is present as an meta-aramid in an amount of 0 to 50 weight percent floc and 50 to 100 weight percent fibrid, (ii) the cellulose is present in the form of cellulosic pulp fiber and (iii) the aramid is present in an amount of 16 to 75 weight percent and the cellulose is present in an amount of 25 to 84 weight percent, said percentages on the basis of the aramid and cellulose and (b) a second layer containing cellulosic pulp fiber with the proviso that the second layer does not contain aramid. The multilayer structure is particularly useful in a transformer.

    Abstract translation: 多层结构包含（a）芳族聚酰胺和纤维素的第一层，其中（i）芳族聚酰胺以0至50重量％的絮状物和50至100重量百分数的纤维素的量存在为间位芳族聚酰胺，（ii）纤维素 以纤维素纸浆纤维的形式存在，和（iii）芳族聚酰胺的存在量为16至75重量％，纤维素以25至84重量％的量存在，所述百分比基于芳族聚酰胺和 纤维素和（b）含有纤维素纸浆纤维的第二层，条件是第二层不含芳族聚酰胺。 多层结构在变压器中特别有用。

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