公开(公告)号：US5670097A

公开(公告)日：1997-09-23

申请号：US351771

申请日：1994-12-08

申请人： Daniel C. Duan ,  Mark S. Schaberg ,  Terence M. Fogarty ,  William L. Howard, Jr. ,  Kenneth B. Wood

发明人： Daniel C. Duan ,  Mark S. Schaberg ,  Terence M. Fogarty ,  William L. Howard, Jr. ,  Kenneth B. Wood

IPC分类号： G01N33/49 ,  A61B5/00 ,  A61B5/145 ,  A61B5/1459 ,  C08J3/07 ,  C08J3/24 ,  C08J5/20 ,  C08L75/04 ,  C08L101/00 ,  B29D11/00

CPC分类号： A61B5/1455

摘要： The present invention provides a shaped permeable polymeric material including a hydrophobic portion and a hydrophilic portion, wherein the material is crosslinked. This material is prepared by a method including the steps preparing a crosslinkable composition having a hydrophobic portion and a hydrophilic portion; placing the crosslinkable composition in a mold; gelling the crosslinkable composition to form a shaped gelled polymeric composition comprising a hydrophobic portion, a hydrophilic portion, and a liquid portion; and exchanging the liquid portion with an exchange liquid to form the permeable polymeric material. Preferably this material is used in a blood gas sensor.

摘要翻译： 本发明提供了一种成形的可渗透的聚合材料，其包括疏水部分和亲水部分，其中所述材料是交联的。 该材料通过包括制备具有疏水部分和亲水部分的可交联组合物的步骤的方法制备; 将可交联组合物置于模具中; 胶凝所述可交联组合物以形成包含疏水部分，亲水部分和液体部分的成形凝胶聚合物组合物; 并用交换液体更换液体部分以形成可渗透的聚合材料。 优选地，该材料用于血液气体传感器。

公开(公告)号：US4044007A

公开(公告)日：1977-08-23

申请号：US742825

申请日：1976-11-18

申请人： William L. Howard

发明人： William L. Howard

IPC分类号： A01N25/22 ,  A01N43/90 ,  C07D295/02

CPC分类号： A01N43/90 ,  A01N25/22

摘要： Adducts of certain unsaturated halides with hexamethylenetetramine are known to be effective germicides when present in concentrations as low as 0.01 percent in water-containing organic mixtures. However, under certain conditions the compounds may undergo detrimental spontaneous exothermic decomposition. Blending with the adduct an additament which undergoes an endothermic change at a temperature below that at which exothermic decomposition of the adduct decomposition thereby providing a composition stabilized for packaging and/or storage.

摘要翻译： 已知某些不饱和卤化物与六亚甲基四胺的加合物在含水有机混合物中的浓度低至0.01％时是有效的杀菌剂。 然而，在某些条件下，化合物可能会发生有害的自发放热分解。 与加合物混合，在低于加氢分解的放热分解的温度下经历吸热变化的添加剂，从而提供稳定包装和/或储存的组合物。

公开(公告)号：US4087453A

公开(公告)日：1978-05-02

申请号：US697799

申请日：1976-06-18

申请人： Fred A. Sherrod ,  William L. Howard ,  Joanne D. Burger

发明人： Fred A. Sherrod ,  William L. Howard ,  Joanne D. Burger

IPC分类号： C07C29/09 ,  C07C29/00 ,  C07C31/20 ,  C07C31/22 ,  C07C67/24

CPC分类号： C07C29/095

摘要： A process for recovering monomeric glycols and glycerine from polyoxyalkylene glycols and polyglycerines which comprises heating the polymeric compounds together with a lower saturated mono-carboxylic acid, containing from 2 to 4 carbon atoms such as acetic acid, in the presence of a strong acid, e.g. sulfuric acid, or a strong acid cation exchange resin. The product, which is the diester of the monomeric glycol or the triester of glycerine, is recovered and subsequently hydrolyzed to obtain the desired monoglycol or glycerine product. If it is desired to obtain the ester itself, the latter step of hydrolyzing can be omitted.

摘要翻译： 从聚氧亚烷基二醇和聚甘油中回收单体二醇和甘油的方法，其包括在强酸（例如乙酸）存在下，将聚合化合物与含有2至4个碳原子的较低饱和一元酸例如乙酸一起加热。 硫酸或强酸阳离子交换树脂。 将单体二醇或甘油三酯的二酯的产物回收，随后水解，得到所需的单甘醇或甘油产物。 如果希望获得酯本身，则后一步的水解可以被省略。

公开(公告)号：US3996272A

公开(公告)日：1976-12-07

申请号：US511842

申请日：1974-10-03

申请人： Joanne D. Burger ,  William L. Howard

发明人： Joanne D. Burger ,  William L. Howard

IPC分类号： C07C45/51 ,  C07C51/00 ,  C07C51/295 ,  C07C53/16 ,  C07C49/08

CPC分类号： C07C51/00 ,  C07C45/513 ,  C07C51/295

摘要： This invention relates to a chemical process for preparing pentachloro-2-propanone (pentachloroacetone) and dichloroacetic acid from isopropyl ethers which may be partially chlorinated. The pentachloroacetone process is carried out by reacting the isopropyl ethers with chlorine in the presence of water to produce pentachloroacetone which can then be recovered. Alternatively, if dichloroacetic acid is desired, the pentachloroacetone process may be carried further by reacting the pentachloroacetone with a base-acting material to produce a salt of dichloroacetic acid and then reacting this salt with acid to produce dichloroacetic acid of about 95% purity.

摘要翻译： 本发明涉及可以部分氯化的异丙醚制备五氯-2-丙酮（五氯丙酮）和二氯乙酸的化学方法。 五氯丙酮方法是通过在水存在下使异丙醚与氯反应，生成五氯丙酮，然后将其回收。 或者，如果需要二氯乙酸，则五氯丙酮方法可以进一步通过使五氯丙酮与碱作用物质反应以制备二氯乙酸的盐，然后使该盐与酸反应，产生约95％纯度的二氯乙酸。

公开(公告)号：US5362009A

公开(公告)日：1994-11-08

申请号：US138373

申请日：1993-10-15

申请人： William L. Howard, Jr. ,  David P. Smith

发明人： William L. Howard, Jr. ,  David P. Smith

IPC分类号： G11B15/26 ,  G11B15/43 ,  G11B23/087

CPC分类号： G11B23/08757 ,  G11B15/26 ,  G11B15/43 ,  G11B23/08778

摘要： A corner belt guide roller for use in a belt driven tape cartridge is disclosed. The roller controls drag on the driving belt to maintain magnetic tape tension and reduce variability in the cartridge operation. The guide roller is mounted on a pivot pin through an inner cylindrical surface. The inner cylindrical surface has an oriented controlled texture including axial splines. This enables the guide roller to have controlled friction with its pivot pin, and provide a predetermined constant amount of drag to the driving belt to improve the consistency of the tape cartridge operation.

摘要翻译： 公开了一种用于带式带盒中的角皮带引导辊。 滚筒控制驱动皮带上的拖动，以保持磁带张力，并降低墨盒操作的可变性。 引导辊通过内圆柱表面安装在枢轴销上。 内圆柱表面具有包括轴向花键的定向控制纹理。 这使得引导辊能够与其枢销具有受控制的摩擦，并且向传动带提供预定的恒定量的阻力以提高带盒操作的一致性。