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11. 发明授权

US5280097A Laminated composites of polyurea-cellulose and methods for their manufacture 失效
标题翻译：聚脲纤维素层压复合材料及其制造方法
公开(公告)号：US5280097A
公开(公告)日：1994-01-18
申请号：US895376
申请日：1992-06-08
申请人： Frank R. Hunter , James F. L. Lincoln , David W. Park
发明人： Frank R. Hunter , James F. L. Lincoln , David W. Park
IPC分类号： B32B27/04 , C08G18/08 , C08G18/30 , C08G18/76 , C08J7/04 , C08K5/1565 , C08L97/02 , D21H17/57 , D21H27/30 , C08H5/04 , B32B21/06 , B32B21/14 , B32B23/04
CPC分类号： C08J7/047 , B32B27/04 , C08G18/0852 , C08G18/302 , C08G18/7664 , C08K5/1565 , C08L97/02 , D21H17/57 , D21H27/30 , C08J2461/00 , C08J2467/00 , Y10T428/31978 , Y10T428/31982 , Y10T428/31986 , Y10T428/31989
摘要： A laminated product has an organic polymer layer on at least one surface of a substrate of cellulosic material impregnated with polyisocyanate. The substrate is preferably made from substantially delignified cellulosic material and an isocyanate resin. The isocyanate resin comprises a polyisocyanate, preferably PMDI, and may include a miscible organic solvent, preferably one such as propylene carbonate having a high boiling point and low flammability and toxicity. The substrate may be cured with an uncured overlay sheet positioned on the cured substrate and then cured to bond the substrate and overlay. Alternatively, a cured overlay may be adhesively or otherwise secured to a previously cured substrate. As yet another alternative, an uncured overlay sheet and uncured substrate may be placed in position and simultaneously cured. An overlay may be positioned on one or both major surfaces of a substrate sheet.
摘要翻译：叠层产品在浸渍有多异氰酸酯的纤维素材料的基材的至少一个表面上具有有机聚合物层。基材优选由基本上脱木素的纤维素材料和异氰酸酯树脂制成。异氰酸酯树脂包括多异氰酸酯，优选PMDI，并且可以包括可混溶的有机溶剂，优选一种如具有高沸点和低可燃性和毒性的碳酸亚丙酯。基材可以用位于固化的基底上的未固化的覆盖片固化，然后固化以粘合基底和覆盖层。或者，固化的覆盖层可以粘合地或以其他方式固定到预先固化的基底。作为另一替代方案，未固化的覆盖片和未固化的基底可以被放置就位并且同时固化。覆盖层可以位于基片的一个或两个主表面上。

12. 发明授权

US4828890A Method for increasing bleed resistance of preserved plants and products of the method 失效
标题翻译：提高保存植物和产品的抗渗性的方法
公开(公告)号：US4828890A
公开(公告)日：1989-05-09
申请号：US182674
申请日：1988-04-18
申请人： George T. Tiedeman , David W. Park , Robert H. Young
发明人： George T. Tiedeman , David W. Park , Robert H. Young
IPC分类号： A01N3/00 , A01N3/02
CPC分类号： A01N3/00
摘要： The present invention is a method of preserving plants which achieves reduced bleeding of the preservative material when the plants are subjected to elevated humidity conditions. The method comprises perfusing the plants with an aqueous preservative composition in which the preservative is primarily an alkylene oxide oligomer, 1,3-butanediol, or 1,4-butanediol. Preferred alkylene oxide oligomers are di- and polyethylene glycols in the molecular weight range of about 200-1500 and di- and polypropylene glycols with an average molecular weight below about 450. The preferred materials may be used with lesser amounts of secondary humectant materials selected from glycerol, ethylene glycol, propylene glycol, magnesium chloride or magnesium bromide hexahydrate, and water soluble cycle phosphonate esters. Plants are conventionally treated by perfusing an aqeous treatment solution into the vascular system through a cut stem or other incision which exposes the xylem. Treatment is carried out at a temperature in the range of 20.degree.-50.degree. C. at a relative humidity in the range of about 20%-80% for a period time up to about 14 days.

13. 发明授权

US06996342B2 Control system for an agile optical network 有权
公开(公告)号：US06996342B2
公开(公告)日：2006-02-07
申请号：US09974907
申请日：2001-10-12
申请人： David W. Park , Lisa M. Gaen , Gerard L. Swinkels
发明人： David W. Park , Lisa M. Gaen , Gerard L. Swinkels
IPC分类号： H04J14/00 , H04B10/08 , H04B17/00 , H04B10/02 , H04B10/12
CPC分类号： H04J14/0227 , H04J14/0241 , H04J14/0284 , H04Q11/0062 , H04Q2011/0073 , H04Q2011/0083 , H04Q2011/0086
摘要： A control system for an agile optical network uses constraint-based rules to minimize route validation computations required when the network is reconfigured. A hierarchical control structure facilitates admission control and insulates admission control from interaction with the physical layer of the network.

14. 发明授权

US06569279B1 Method for bonding composite wood products 失效
标题翻译：复合木制品粘接方法
公开(公告)号：US06569279B1
公开(公告)日：2003-05-27
申请号：US09562362
申请日：2000-05-01
申请人： David W. Park , Richard E. Wagner , Ronald C. Wilderman
发明人： David W. Park , Richard E. Wagner , Ronald C. Wilderman
IPC分类号： B32B3120
CPC分类号： C09J5/06 , B27N3/002 , B27N3/203 , B32B37/06 , B32B37/1207 , B32B2310/0806 , B32B2310/12 , B32B2317/16 , C09J2400/303
摘要： A method for bonding composite wood products comprises using a PMDI adhesive modified with a polar compound such as a lower alkylene carbonate or triacetin with a combination of conductive thermal heat and radio frequency energy. Propylene carbonate is a preferred modifier. Press temperatures and pressing times may be significantly reduced from those using either unmodified PMDI adhesives or the modified adhesives without radio frequency energy. Laminated veneer products 38 mm in thickness can be pressed at 110°-120° C. in as little as 7 minutes using radio frequency energy at a level of about 32 kw/m2.
摘要翻译：用于粘合复合木制品的方法包括使用具有导电热热和射频能量的组合的用极性化合物如低级亚烷基碳酸酯或三醋精改性的PMDI粘合剂。碳酸丙烯酯是优选的改性剂。使用未经改性的PMDI胶粘剂或未经射频能量的改性粘合剂，压力温度和压制时间可能会显着降低。 38毫米厚的层压胶合板产品可以使用射频能量约为32千瓦/平方米，以110°-120℃压制7分钟。

15. 发明授权

US5830320A Method of enhancing strength of paper products and the resulting products 失效
标题翻译：提高纸制品及其产品强度的方法
公开(公告)号：US5830320A
公开(公告)日：1998-11-03
申请号：US718103
申请日：1996-09-18
申请人： David W. Park , Frank R. Hunter
发明人： David W. Park , Frank R. Hunter
IPC分类号： D21H23/04 , D21H11/14 , D21H17/55 , D21H21/20
CPC分类号： D21H21/20 , D21H17/55 , D21H23/04
摘要： The invention is a method of enhancing the strength of paper products, particularly the dry strength, without adversely affecting repulpability. It is also directed to the resulting products. It is particularly applicable but not limited to products with significant amounts of secondary fiber in the furnish. Preferably, about 10-30% of the fiber is separated from the furnish at some point prior to sheeting. This is treated with a cationic wet strength resin which is allowed to bond to the fiber. Cationic polyamide-epichlorohydrin resins are particularly useful. The treated fiber is them mixed with the untreated balance of the fiber at some point before the paper machine. Screnning fines on repulping do not normally exceed 2-3%.
摘要翻译：本发明是提高纸制品的强度，特别是干强度的方法，而不会不利地影响纸浆的再浆化性。它也针对所产生的产品。特别适用于但不限于在配料中具有大量二次纤维的产品。优选地，约10-30％的纤维在成片之前的某一时刻与配料分离。用阳离子湿强度树脂处理，使其与纤维结合。阳离子聚酰胺 - 表氯醇树脂特别有用。处理过的纤维在造纸机之前的某个时刻与纤维的未处理平衡物混合。罚款罚款通常不超过2-3％。

16. 发明授权

US5716563A Method of forming a surfaced cellulosic composite panel 失效
标题翻译：形成表面纤维素复合板的方法
公开(公告)号：US5716563A
公开(公告)日：1998-02-10
申请号：US357378
申请日：1994-12-16
申请人： Jack G. Winterowd , David W. Park , J. Harry Wirz , Roland E. Kreibich , Roger M. Shantz , Timnit Ghermay , Charles C. Childress
发明人： Jack G. Winterowd , David W. Park , J. Harry Wirz , Roland E. Kreibich , Roger M. Shantz , Timnit Ghermay , Charles C. Childress
IPC分类号： B27N7/00 , E04C2/10 , B29C44/06 , B29C44/12
CPC分类号： B27N7/005 , E04C2/10 , Y10T428/249959 , Y10T428/249987 , Y10T428/249989 , Y10T428/31989
摘要： A method of producing a surfaced composite panel of cellulosic particulates, such as wood flakes, involves the application of polymer forming foamable material to at least one of the first and second major surfaces of the panel, contacting said at least one of the first and second surfaces with a pressure applying surface to apply pressure thereto, foaming the polymer forming foamable material while pressure is applied and curing the applied foam material to produce a polymeric coating on the panel with the desired surface, which is typically extremely smooth. One or both surfaces may be surface treated in this manner. A skin formed on the surface of the panel is believed to add to the strength and stiffness of the coating on the panel. A wide variety of foaming systems may be used to accomplish this surface treating. By avoiding sanding the surface treated panel, the skin remains intact. The resulting panel, in addition to being extremely smooth as desired, resists water penetration when subjected to water or high humidity conditions. The resulting panel is receptive to adhesives for purposes of securing overlaying materials such as vinyl, reduces formaldehyde emissions when a panel formed of the resin which emits formaldehydes is surface treated.
摘要翻译：生产纤维素颗粒如木屑的表面复合板的方法涉及将聚合物形成可发泡材料施加到面板的第一和第二主表面中的至少一个上，使所述第一和第二表面中的至少一个接触具有压力施加表面以施加压力的表面，在施加压力的同时使聚合物形成发泡材料，并固化所施加的泡沫材料，以在面板上产生具有期望表面的聚合物涂层，其通常非常光滑。一个或两个表面可以以这种方式进行表面处理。认为在面板表面上形成的皮肤增加了面板上涂层的强度和刚度。可以使用各种发泡系统来完成该表面处理。通过避免打磨表面处理的面板，皮肤保持原样。除了根据需要非常光滑之外，所得到的面板在经受水或高湿度条件时抗水渗透。所得到的面板接受粘合剂，以便确保覆盖材料例如乙烯基，当由发出甲醛的树脂形成的面板进行表面处理时，减少甲醛释放。

17. 发明申请

US20100167198A1 METHODS OF LIQUID TONER PRINTING 审中-公开
标题翻译：液相色谱打印方法
公开(公告)号：US20100167198A1
公开(公告)日：2010-07-01
申请号：US12347735
申请日：2008-12-31
申请人： David W. Park , Amar Neogi , Michael J. Dougherty
发明人： David W. Park , Amar Neogi , Michael J. Dougherty
IPC分类号： G03G13/10
CPC分类号： G03G13/10
摘要： A method of printing using liquid toner generally includes obtaining a cellulose based substrate having a surface layer including nPCC, and printing on the cellulose based substrate using a liquid toner printer to achieve tape pull results of less than about 7%.
摘要翻译：使用液体调色剂的印刷方法通常包括获得具有包括nPCC的表面层的纤维素基基材，并使用液体调色剂打印机在基于纤维素的基材上印刷，以获得小于约7％的胶带拉伸结果。

18. 发明授权

US06416626B1 Polyethylene glycol-containing paper 失效
标题翻译：含聚乙二醇的纸
公开(公告)号：US06416626B1
公开(公告)日：2002-07-09
申请号：US09672674
申请日：2000-09-28
申请人： David W. Park , Michael J. Dougherty
发明人： David W. Park , Michael J. Dougherty
IPC分类号： D21H1736
CPC分类号： D21H17/36
摘要： A polyethylene glycol-containing paper is described. The paper includes polyethylene glycol (PEG) having an average molar mass in the range of from about 30,000 to about 50,000. In one embodiment, polyethylene glycol is incorporated into the paper during the paper's formation. In another embodiment, a polyethylene glycol-coated paper is provided. Methods for forming polyethylene glycol-containing papers are also described.
摘要翻译：描述含聚乙二醇的纸。该纸包括平均摩尔质量在约30,000至约50,000范围内的聚乙二醇（PEG）。在一个实施方案中，在纸张形成期间将聚乙二醇掺入纸中。在另一个实施方案中，提供聚乙二醇涂布纸。还描述了形成含聚乙二醇的纸的方法。

19. 发明授权

US5880243A Fire retardant composite products of cellulose impregnated with isocyanate compositions 失效
标题翻译：用异氰酸酯组合物浸渍的纤维素的阻燃复合产品
公开(公告)号：US5880243A
公开(公告)日：1999-03-09
申请号：US845000
申请日：1997-04-23
申请人： David W. Park , Bruce A. Thompson
发明人： David W. Park , Bruce A. Thompson
IPC分类号： C08B15/06 , C08G18/64 , C08H8/00 , C08G18/00 , C08H5/04
CPC分类号： C08H8/00 , C08B15/06 , C08G18/6484
摘要： New and useful products are based on sheeted cellulose impregnated with a polyfunctional isocyanate and a fire retardant material. The fire retardants are chosen from organophosphorous esters compatible with the isocyanate in the proportions used. Preferred impregnating compositions use about one part of isocyanate and two parts of a halogenated diphosphate ester. Other compatible phosphorous based materials may be included for viscosity control.
摘要翻译：新的和有用的产品基于用多官能异氰酸酯和阻燃材料浸渍的片状纤维素。阻燃剂选自与所用比例的异氰酸酯相容的有机磷酯。优选的浸渍组合物使用约一份异氰酸酯和两份卤代二磷酸酯。可以包括其他兼容的磷基材料用于粘度控制。

20. 发明授权

US5710434A Isocyanate impregnating compositions 失效
标题翻译：异氰酸酯浸渍组合物
公开(公告)号：US5710434A
公开(公告)日：1998-01-20
申请号：US715977
申请日：1996-09-19
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 , C08K5/05 , 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。

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