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38 条记录 (耗时 0.025 秒)

    Methods for Enhancing Hardness and Dimensional Stability of a Wood Element and Wood Product Having Enhanced Hardness
    1.
    发明申请
    Methods for Enhancing Hardness and Dimensional Stability of a Wood Element and Wood Product Having Enhanced Hardness 失效
    提高硬度的木材和木制品的硬度和尺寸稳定性的方法

    公开(公告)号：US20100180987A1

    公开(公告)日：2010-07-22

    申请号：US12355640

    申请日：2009-01-16

    申请人： David W. Park ,  Ronald C. Wilderman

    发明人： David W. Park ,  Ronald C. Wilderman

    IPC分类号： B27M1/02

    CPC分类号： B27M1/02 ,  B27K5/009

    摘要： The present disclosure includes methods for enhancing hardness and dimensional stability of a wood element. In one embodiment, the method includes placing the wood element in a compression assembly set to a compression temperature between about 365° F. and about 410° F., heating and compressing the wood element without exceeding the species' threshold pressure value to produce a compressed wood product, heating the compressed wood product to a post-compression temperature between about 275° F. and about 350° F., and holding the compressed wood product at the post-compression temperature for about 30 to about 48 hours. The disclosure also includes a wood product having enhanced hardness.

    摘要翻译： 本公开包括用于增强木质元件的硬度和尺寸稳定性的方法。 在一个实施例中，该方法包括将木质元件放置在压缩组件中，该压缩组件设定在约365°F至约410°F之间的压缩温度，加热和压缩木质元件而不超过物种的阈值压力值，以产生 压缩木制品，将压缩木制品加热至约275°F至约350°F之间的后压缩温度，并将压缩木制品在后压缩温度下保持约30至约48小时。 本公开还包括具有增强的硬度的木制品。

    Amplitude modulation of a pump laser signal in a distributed raman amplifier
    3.
    发明授权
    Amplitude modulation of a pump laser signal in a distributed raman amplifier 有权
    分布式拉曼放大器中泵浦激光信号的幅度调制

    公开(公告)号：US06452716B1

    公开(公告)日：2002-09-17

    申请号：US09679389

    申请日：2000-10-05

    申请人： David W. Park ,  Christopher R S Fludger ,  Vincent A. Handerek

    发明人： David W. Park ,  Christopher R S Fludger ,  Vincent A. Handerek

    IPC分类号： G01M1102

    CPC分类号： H04B10/2916

    摘要： A power supply for a pump laser in a distributed Raman amplifier is modulated with a small amount of amplitude modulation. This amplitude modulation transfers to the traffic wavelengths and is detected at a Raman amplifier control system. The Raman amplifier control system decodes the modulation and determines the amount of modulation transferred to the traffic. Given knowledge of the signal level of the modulation that was applied the gain of the distributed Raman amplifier may be determined. The Raman amplifier control system may then control the power supplied to the pump laser to result in a specific gain, thus providing closed loop control.

    摘要翻译： 分布式拉曼放大器中的泵浦激光器的电源用少量的幅度调制进行调制。 该幅度调制传输到业务波长，并在拉曼放大器控制系统处检测。 拉曼放大器控制系统对调制进行解码并确定传输到通信量的调制量。 给定知道所应用的调制信号电平可以确定分布式拉曼放大器的增益。 然后，拉曼放大器控制系统可以控制提供给泵激光器的功率以产生特定增益，从而提供闭环控制。

    Cellulose products treated with isocyanate compositions
    4.
    发明授权
    Cellulose products treated with isocyanate compositions 失效
    用异氰酸酯组合物处理的纤维素产品

    公开(公告)号：US5580922A

    公开(公告)日：1996-12-03

    申请号：US467498

    申请日：1995-06-06

    申请人： David W. Park ,  Frank R. Hunter

    发明人： David W. Park ,  Frank R. Hunter

    IPC分类号： B65D65/42 ,  C08G18/16 ,  C08G18/30 ,  C08G18/64 ,  C08K5/10 ,  B32B29/06 ,  B65D5/00 ,  B65D25/00 ,  B65D25/34 ,  C08G18/02 ,  C08K5/101 ,  C08K5/11

    CPC分类号： C08G18/6484 ,  B65D65/42 ,  C08G18/168 ,  C08G18/302 ,  C08K5/10 ,  Y10T428/2965 ,  Y10T428/31975 ,  Y10T428/31982 ,  Y10T428/31993

    摘要： The invention is directed to a composition of matter useful as a paper impregnant, to the method of its use, and to the products produced by the method. Poly (diphenylmethane diisocyanate) or PMDI has been used in the past as a paper impregnant with or without propylene carbonate as a diluent. These products have generally required pressing under high pressures and at elevated temperatures. It has now been found that triacetin and/or triethyl citrate in usages up to about 20% of PMDI give superior performance in impregnated products. The modified PMDI will cure at essentially ambient conditions in times as short as 1-2 days to insoluble polyureas with low residual amounts of isocyanates and reaction byproducts such as 4,4'-diaminodiphenylmethane. The treated papers can be used in applications of which skins for sandwich panels and high strength corrugated board would be exemplary.

    摘要翻译： 本发明涉及用作纸浸渍剂的物质组合物，其使用方法以及通过该方法制备的产品。 过去，已经使用聚（二苯基甲烷二异氰酸酯）或PMDI作为具有或没有碳酸丙烯酯作为稀释剂的纸浸渍剂。 这些产品通常需要在高压和高温下进行压制。 现在已经发现，使用多达约20％的PMDI的三醋精和/或柠檬酸三乙酯在浸渍产品中具有优异的性能。 修改的PMDI将在短时间至1-2天的基本环境条件下固化，得到具有低残留量异氰酸酯和反应副产物如4,4'-二氨基二苯基甲烷的不溶性聚脲。 经处理的纸可用于夹层板和高强度瓦楞纸板的表皮将是示例性的应用。

    Laminated dieboard structure
    6.
    发明授权
    Laminated dieboard structure 失效
    层压模板结构

    公开(公告)号：US5143768A

    公开(公告)日：1992-09-01

    申请号：US753113

    申请日：1991-08-30

    申请人： Ronald C. Wilderman ,  David W. Park

    发明人： Ronald C. Wilderman ,  David W. Park

    IPC分类号： B26F1/44 ,  B32B27/08

    CPC分类号： B32B27/08 ,  B26F1/44 ,  B26F1/40 ,  B26F2001/4463 ,  Y10S76/06 ,  Y10T428/23 ,  Y10T428/233 ,  Y10T428/236 ,  Y10T428/249987 ,  Y10T428/3154 ,  Y10T428/31544 ,  Y10T428/31591

    摘要： This invention is directed to a dieboard comprising a rigid core of a plastic material, such as polyurethane, having a polyurea-cellulose composite secured to its opposed major surfaces. The polyurea-cellulose composite imparts substantial dimensional stability to the laminated dieboard. A layer of a liquid impermeable material, such as a film, can be secured to the outer major surfaces of the dieboard. By making this outer layer of a light color, such as white, the projection of CAD or hand-drawing slotting templates onto the dieboard surface is facilitated.

    摘要翻译： 本发明涉及一种包括塑料材料的刚性芯（例如聚氨酯）的模板，其具有固定到其相对主表面的聚脲 - 纤维素复合材料。 聚脲 - 纤维素复合材料对层压模板具有显着的尺寸稳定性。 可以将诸如膜的液体不可渗透材料层固定到模板的外主表面。 通过使该外层为浅色，例如白色，便于CAD或手绘开槽模板的投影到模板表面上。

    Flame retardant plant
    8.
    发明授权
    Flame retardant plant 失效
    阻燃剂厂

    公开(公告)号：US4917922A

    公开(公告)日：1990-04-17

    申请号：US113312

    申请日：1987-10-28

    申请人： C. Jay Allison ,  David W. Park

    发明人： C. Jay Allison ,  David W. Park

    IPC分类号： A01N3/00 ,  B27K3/06 ,  C09K21/02 ,  C09K21/06

    CPC分类号： A01N3/00 ,  Y10S428/921

    摘要： A flame retardant plant, having flame retardant material substantially uniformly distributed within the plant. The method of producing such plant involves systemic infusion by contacting a freshly exposed plant surface or cut stem or trunk with an aqueous solution, which contains at least the flame retardant material, for a sufficient period of time. The plant may also contain, along with the flame retardant material, a preservative alone or in combination with a dye, produced by the above method.

    Lignothermoplastic
    9.
    发明授权
    Lignothermoplastic 有权
    木质素

    公开(公告)号：US08383784B2

    公开(公告)日：2013-02-26

    申请号：US12551388

    申请日：2009-08-31

    申请人： David W. Park ,  Amar N. Neogi ,  Ludwig Furtner, Jr.

    发明人： David W. Park ,  Amar N. Neogi ,  Ludwig Furtner, Jr.

    IPC分类号： C07G1/00 ,  C08H7/00 ,  C08L97/00

    CPC分类号： C07G1/00

    摘要： A thermoplastic material made from lignin, polyol and a melting point reducer where the melting point reducer is miscible in the specific polyol employed and where the lignin, polyol and melting point reducer are all miscible when in their melted state.

    摘要翻译： 由木质素，多元醇和熔点降低剂制成的热塑性材料，其中熔点降低剂在所用的特定多元醇中是可混溶的，其中木质素，多元醇和熔点降低剂在熔融状态下都是可混溶的。

    Artificial fire log
    10.
    发明授权
    Artificial fire log 有权
    人造火灾日志

    公开(公告)号：US08142526B2

    公开(公告)日：2012-03-27

    申请号：US12551301

    申请日：2009-08-31

    申请人： David W. Park ,  Amar N. Neogi ,  Ludwig Furtner, Jr.

    发明人： David W. Park ,  Amar N. Neogi ,  Ludwig Furtner, Jr.

    IPC分类号： C10L11/00

    CPC分类号： C10L5/44 ,  C10L5/365 ,  Y02E50/10 ,  Y02E50/30

    摘要： Artificial fire logs made from non-petrochemical based, renewable materials are described. These artificial fire logs perform substantially equivalent to existing commercial fire logs. The artificial fire logs are made from cellulosic materials, a lignin containing composition and a non-petroleum based wax where the lignin containing composition comprises lignin and 1,3-propanediol derived from a renewable resource.

    摘要翻译： 描述了由非石油化学的可再生材料制成的人造火源。 这些人造火灾记录基本上等同于现有的商业防火记录。 人造防火材料由纤维素材料，含木质素组合物和非石油基蜡制成，其中含木质素的组合物包含衍生自可再生资源的木质素和1,3-丙二醇。