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1. 发明申请

WO1993022673A1 FLOW RESTRICTOR-SEPARATION DEVICE 审中-公开
标题翻译：流量限制器分离装置
公开(公告)号：WO1993022673A1
公开(公告)日：1993-11-11
申请号：PCT/CA1993000173
申请日：1993-04-23
申请人： DU PONT CANADA INC. , E.I. DU PONT DE NEMOURS AND COMPANY
发明人： DU PONT CANADA INC. , E.I. DU PONT DE NEMOURS AND COMPANY , ADAMS, George, Allen , LUOMA, Robert, Paul, II
IPC分类号： G01N33/483
CPC分类号： G01N33/491 , B01L3/50215 , Y10T436/25375
摘要： A method of partitioning a pre-selected phase of a sample of liquid having a plurality of phases of differing densities, a separation device and a tube containing the separation device. The sample of liquid is placed in a first chamber of a linear tube that is separated from a second chamber by a separation device. The separation device slidably engages the interior surface of the tube in an essentially fluid-tight manner and has an axial orifice on the longitudinal axis of the tube that is in fluid flow communication with a flow-restriction channel. The phases are ordered concentrically by rotating the tube around its longitudinal axis e.g. in an axial centrifuge. The volume of the first chamber is reduce by movement of the separation device within the tube, that phase of the liquid located axially within the first chamber flowing into the axial orifice and passing through the flow-restriction channel into the second chamber. The reduction of the volume of the first chamber is controlled using phase-separation information. The method is useful in separation of blood components.

2. 发明申请

WO1993021001A1 HEAT SEALING JAW ASSEMBLY 审中-公开
标题翻译：热封密封装置
公开(公告)号：WO1993021001A1
公开(公告)日：1993-10-28
申请号：PCT/CA1993000161
申请日：1993-04-14
申请人： DU PONT CANADA INC.
发明人： DU PONT CANADA INC. , PERRETT, Arnold, Edward
IPC分类号： B29C65/18
CPC分类号： B29C65/7841 , B29C65/224 , B29C65/226 , B29C65/38 , B29C65/7433 , B29C66/0044 , B29C66/00461 , B29C66/1122 , B29C66/3432 , B29C66/4312 , B29C66/73921 , B29C66/80 , B29C66/8122 , B29C66/81417 , B29C66/81427 , B29C66/81457 , B29C66/8167 , B29C66/81821 , B29C66/81871 , B29C66/83221 , B29C66/849 , B29K2101/12 , Y10T156/1054 , Y10T156/1313 , B29C65/00 , B29K2827/18 , B29K2909/08
摘要： A heat sealing assembly, for sealing through at least two layers of thermoplastic film is disclosed. It is particularly adapted for use with a vertical form, fill and seal machine for packaging flowable materials. The heat sealing assembly comprises two jaws, resilient clamping elements (14-16) and a heat sealing element (11), at least one of the jaws being capable of transverse motion and adapted to collapse a tubular film made from the thermoplastic film and passing between the jaws, each of said jaws having said element mounted thereon, said clamping elements being adapted to grip thermoplastic film (25) which passes therebetween and urge said gripped film towards said jaws when the jaws close and to release said film when the jaws open. Clamping is accomplished without an activating device other than the jaws themselves. Preferably there are clamping elements on both sides of the jaws. Preferably the clamping elements are made of a flexible rubber.
摘要翻译：公开了一种用于密封通过至少两层热塑性薄膜的热封组件。它特别适用于垂直形式，填充和密封机器，用于包装可流动材料。热封组件包括两个钳口，弹性夹紧元件（14-16）和热密封元件（11），至少一个钳口能够横向运动并且适于折叠由热塑性膜制成的管状膜并通过在所述夹爪之间，每个所述夹爪具有安装在其上的所述元件，所述夹紧元件适于夹持热塑性薄膜（25），所述热塑性薄膜（25）通过其间，当所述夹爪关闭时将所述夹持的薄膜推向所述夹爪，并且当所述夹爪打开时，释放所述薄膜。夹具在没有夹爪本身以外的启动装置的情况下完成。优选地，在钳口的两侧上存在夹紧元件。优选地，夹紧元件由柔性橡胶制成。

3. 发明申请

WO1993007187A1 CATALYST FOR ETHYLENE POLYMERIZATION AT HIGH TEMPERATURES 审中-公开
标题翻译：乙烯聚合在高温下的催化剂
公开(公告)号：WO1993007187A1
公开(公告)日：1993-04-15
申请号：PCT/CA1992000418
申请日：1992-09-25
申请人： DU PONT CANADA INC. , ZBORIL, Vaclav, George
发明人： DU PONT CANADA INC.
IPC分类号： C08F10/02
CPC分类号： C08F10/00 , C08F210/16 , C08F2/06 , C08F4/6555 , C08F4/642
摘要： A solution process for the preparation of high molecular weight polymers of alpha-olefins selected from the group consisting of homopolymers of ethylene and copolymers of ethylene and C3-C12 higher alpha-olefins is disclosed. The process comprises feeding monomer selected from the group consisting of ethylene and mixtures of ethylene and at least one C3-C12 higher alpha-olefin, a coordination catalyst and inert hydrocarbon solvent to a reactor, polymerizing said monomer at a temperature in the range of 105-320 DEG C and recovering the polymer so obtained. The coordination catalyst is formed from MgR 2 and A1R 3 in which each R and R are the same or different and are alkyl groups having 1-10 carbon atoms; a reactive chloride component; a titanium compound selected from titanium tetrachloride, titanium tetrabromide and a compound of the formula Ti(OR)x in which x = 0-4 and R is an alkyl group having 1-10 carbon atoms; and an alcohol.
摘要翻译：公开了一种用于制备选自乙烯均聚物和乙烯和C3-C12高级α-烯烃共聚物的α-烯烃的高分子量聚合物的溶液方法。该方法包括将选自乙烯和乙烯与至少一种C3-C12高级α-烯烃的混合物，配位催化剂和惰性烃溶剂的单体进料到反应器中，在105℃的温度下将所述单体聚合 -320℃，并回收得到的聚合物。配位催化剂由MgR 2和AlR 2 3形成，其中R 1和R 2各自相同或不同，为具有1-10个碳原子的烷基; 活性氯化物组分; 选自四氯化钛，四溴化钛和其中x = 0-4且R为具有1-10个碳原子的烷基的式Ti（OR）x的化合物的钛化合物; 和酒精。

4. 发明申请

WO1992014601A1 INSULATED HEAT SEALING JAW 审中-公开
标题翻译：绝缘热封JAW
公开(公告)号：WO1992014601A1
公开(公告)日：1992-09-03
申请号：PCT/CA1992000054
申请日：1992-02-07
申请人： DU PONT CANADA INC. , RILEY, David, C.
发明人： DU PONT CANADA INC.
IPC分类号： B29C65/22
CPC分类号： B29C65/224 , B29C65/226 , B29C65/228 , B29C65/38 , B29C66/0044 , B29C66/1122 , B29C66/4312 , B29C66/71 , B29C66/73921 , B29C66/8122 , B29C66/81261 , B29C66/81821 , B29C66/81871 , B29C66/8322 , B29C66/91231 , B29C66/91421 , B29C66/91651 , B29K2909/08 , B29K2827/18 , B29K2023/0633 , B29K2023/06
摘要： A heat sealing assembly, for sealing at least two layers of thermoplastic film, is disclosed. It comprises a first jaw (11) and a second jaw (not shown), an electrical impulse heat sealing element (12) mounted on the first jaw (11), electrical terminals (17) connected to the element (12), and at least one electrically and thermally insulating film or tape (14) between the first jaw (11) and the heat sealing element (12). At least one of said jaws is capable of transverse motion and is adapted to collapse a tubular film made from the thermoplastic film and passing between said jaws. The improved heat sealing assembly has a first jaw (11) which has a thermally insulating material (16) embedded therein along a length about equal to the width of the flattened film and having a width at least as great as the width of the sealing element.
摘要翻译：公开了一种用于密封至少两层热塑性薄膜的热封组件。其包括第一钳口（11）和第二钳口（未示出），安装在第一钳夹（11）上的电脉冲热密封元件（12），连接到元件（12）的电端子（17）在第一钳口（11）和热封元件（12）之间的至少一个绝热膜和薄膜（14）。所述夹爪中的至少一个能够横向运动，并且适于折叠由热塑性膜制成的管状膜并在所述夹爪之间通过。改进的热封组件具有第一钳口（11），其具有沿着等于扁平膜的宽度的长度嵌入其中的绝热材料（16），并且具有至少与密封元件的宽度一样大的宽度。

5. 发明申请

WO1992000344A1 STRETCH WRAPPING OF A HORIZONTAL BEAM 审中-公开
标题翻译：水平梁的缠绕缠绕
公开(公告)号：WO1992000344A1
公开(公告)日：1992-01-09
申请号：PCT/CA1991000226
申请日：1991-06-21
申请人： DU PONT CANADA INC. , CLIMENHAGE, David, Charles
发明人： DU PONT CANADA INC.
IPC分类号： C08J05/18
CPC分类号： C08J5/18 , B29C47/0021 , B29C47/0026 , B29C47/0057 , B29C47/902 , B29K2995/0041 , B65B53/00 , B65D65/38 , C08J2323/08 , C08L23/04 , C08L2666/04
摘要： A process for wrapping articles, particularly large or heavy articles, with a stretch wrap film is disclosed. The film is at least 45 νm thick and is made from a polymer blend, such blend comprising (i) from 1 to 20 wt.-% of at least one polybutene having a number average molecular weight of from 500 to 10,000 and (ii) a polyethylene selected from the group consisting of at least one linear ethylene/C4-C10 α-olefin copolymer having a density of from 0.915 to 0.940 g/cm3 and blends of such copolymer with a second polymer, selected from a homopolymer of ethylene and a copolymer of ethylene and vinyl acetate, said second polymer having a density of from 0.910 to 0.940 g/cm3, said polyethylene having up to 70 wt.-% of said second polymer, and wherein said film has a low crystallinity.

6. 发明申请

WO1992012194A1 POLYAMIDE COMPOSITIONS 审中-公开
标题翻译：聚酰胺组合物
公开(公告)号：WO1992012194A1
公开(公告)日：1992-07-23
申请号：PCT/CA1992000011
申请日：1992-01-08
申请人： DU PONT CANADA INC. , E.I. DU PONT DE NEMOURS COMPANY , FARKAS, Nicholas , MARKS, David, Neil , NEMSER, Stuart, Marshall
发明人： DU PONT CANADA INC. , E.I. DU PONT DE NEMOURS COMPANY
IPC分类号： C08G69/26
CPC分类号： C08G69/265
摘要： A moldable reinforced polyamide composition comprising (a) a polyamide consisting essentially of between about 0.5 and about 99.5 mol. % of aliphatic diamines having 4-12 carbon atoms and a complementary amount of 2-methyl-pentamethylene diamine copolymerized with aliphatic dicarboxylic acids having 6-12 carbon atoms; and (b) a filler in an amount of 0.5 to 200 parts by weight per 100 parts by weight of said polyamide. The polyamide has an RV greater than about 20. Related polyamides, especially in which the acid is 1,12-dodecanedioic acid, are also disclosed. The polyamides may be used in a wide variety of end-uses, including moulding, and exhibit excellent gloss compared with nylon 6,6.
摘要翻译：一种可模制增强聚酰胺组合物，其包含（a）基本上由约0.5至约99.5摩尔组成的聚酰胺。％的具有4-12个碳原子的脂肪族二胺和与具有6-12个碳原子的脂族二羧酸共聚的2-甲基 - 戊二胺的互补量; 和（b）相对于100重量份所述聚酰胺为0.5〜200重量份的填料。聚酰胺的RV大于约20.相关聚酰胺，特别是其中酸是1,12-十二烷二酸，也被公开。聚酰胺可以用于各种最终用途，包括模塑，并且与尼龙6,6相比表现出优异的光泽度。

7. 发明申请

WO1992003234A1 EPOXY/POLYOLEFIN COATING PROCESS 审中-公开
标题翻译：环氧/聚烯烃涂层工艺
公开(公告)号：WO1992003234A1
公开(公告)日：1992-03-05
申请号：PCT/CA1991000293
申请日：1991-08-16
申请人： DU PONT CANADA INC. , VALSPAR, INC. , COX, James, John, William , PFAFF, Toni, Alois
发明人： DU PONT CANADA INC. , VALSPAR, INC.
IPC分类号： B05D07/14
CPC分类号： C08J7/04 , B05D7/148 , C08J2363/00 , F16L58/1054
摘要： A method of coating metallic pipe is disclosed. The method comprises heating the pipe to a temperature of at least 200 °C and applying an epoxy resin composition having a thickness of at least 300 microns to the outer surface of the heated pipe. Before the epoxy resin composition has completely cured, but preferably after it has gelled, a coating of a modified polyolefin is applied in a thickness of up to 500 microns. The modified polyolefin is a homopolymer or copolymer of hydrocarbon alpha-olefins having 2-10 carbon atoms that has been modified by grafting with ethylenically unsaturated organic carboxylic acid or anhydride. An outer coating of a polyolefin is then applied in a thickness of at least 300 microns, the polyolefin being a homopolymer or copolymer of hydrocarbon alpha-olefins having 2-10 carbon atoms and preferably a homopolymer of ethylene or propylene, or a copolymer of ethylene and a C3-C10 hydrocarbon alpha-olefin. The resultant coating is resistant to impact damage and cathodic disbondment. The coated pipe may be used in buried pipelines in the petroleum industry.

8. 发明申请

WO1991017193A1 SOLUTION PROCESS FOR THE PREPARATION OF POLYMERS OF ALPHA-OLEFINS 审中-公开
标题翻译：用于制备ALPHA-OLEFIN的聚合物的方法
公开(公告)号：WO1991017193A1
公开(公告)日：1991-11-14
申请号：PCT/CA1991000116
申请日：1991-04-05
申请人： DU PONT CANADA INC. , GILLIS, Daniel, John , ZBORIL, Vaclav, George , HUGHSON, Millard, Clifford
发明人： DU PONT CANADA INC.
IPC分类号： C08F10/02
CPC分类号： C08F10/00 , C08F4/685 , C08F4/6352
摘要： A solution process, and a catalyst therefor, for the preparation of high molecular weight polymers of alpha-olefins viz. homopolymers of ethylene and copolymers of ethylene and C3-C12 alpha-olefins, is disclosed. The process is operated under solution polymerization conditions at 105-320 DEG C. The catalyst is obtained from titanium tetrahalides, vanadium oxytrihalides and organoaluminum compounds, in which an admixture of catalyst components is heat-treated at 180-250 DEG C and subsequently cooled to a temperature of less than 150 DEG C. Additional vanadium oxytrihalide is then added. The resultant catalyst solution is activated with an aluminum compound. The catalyst has good activity, showing superior activity to catalysts in which additional vanadium oxytrihalide is not added or added at temperatures above 150 DEG C.
摘要翻译：用于制备α-烯烃的高分子量聚合物的溶液方法及其催化剂，公开了乙烯的均聚物和乙烯和C 3 -C 12α-烯烃的共聚物。该方法在105-320℃的溶液聚合条件下进行。催化剂由四卤化钛，三氧化三钒和有机铝化合物得到，其中将催化剂组分的混合物在180-250℃下热处理，随后冷却至温度低于150℃。然后加入另外的三氧化二铁。所得催化剂溶液用铝化合物活化。该催化剂具有良好的活性，对催化剂具有优异的活性，其中在高于150℃的温度下不加入或加入额外的三氧化二钒

9. 发明申请

WO1991008954A1 SELF VOIDING JAW FOR PACKAGING MACHINE 审中-公开
标题翻译：自动包装机自动脱扣机
公开(公告)号：WO1991008954A1
公开(公告)日：1991-06-27
申请号：PCT/CA1990000407
申请日：1990-11-21
申请人： DU PONT CANADA INC. , WIRSIG, Ralph, Carl , SADLER, James, William , THOMPSON, John, Rowson
发明人： DU PONT CANADA INC.
IPC分类号： B65B51/30
CPC分类号： B29C65/224 , B29C65/226 , B29C65/743 , B29C66/0044 , B29C66/1122 , B29C66/4312 , B29C66/7234 , B29C66/7373 , B29C66/73921 , B29C66/80 , B29C66/8122 , B29C66/81415 , B29C66/81427 , B29C66/81429 , B29C66/81433 , B29C66/81457 , B29C66/81821 , B29C66/81871 , B29C66/83221 , B29C66/849 , B29C66/91421 , B65B51/303 , B29K2909/08 , B29K2827/18
摘要： A heat sealing assembly, for sealing and simultaneously cutting through at least two layers of thermoplastic film is disclosed. It is particularly adapted for use with a vertical form, fill and seal machine for packaging flowable materials, e.g. chocolate fudge sundae topping. The heat sealing assembly comprises two jaws (11, 12) and an electrical impulse heat sealing element, at least one of the jaws being capable of transverse motion and adapted to collapse a tubular film made from the thermoplastic film and passing between the jaws, the first of the jaws having said element mounted thereon and the second of the jaws having a resilient pad (31) mounted thereon, wherein: i) the element comprises two flat elongated fins of metal (21, 22) adjoined by an arcuate elongated segment of metal (23), each lateral edge of the elongated segment being adjoined to a lateral edge of one of the elongated fins, the planes of said fins meeting at an angle of from 140 to 180 degrees, said segment being on the excluded angle side of the planes, the width of each fin being from 1000 to 4000 mum and the thickness of each fin being 125 to 500 mum; ii) the first jaw (11) is constructed of metal and has an element base, said element base (15) consisting of two flat surfaces (16, 17) which meet at an elongated apex (35) at an angle which is substantially the same as the angle between the planes of the elongated fins (21, 22) of said element, the element and element base being constructed such that there is an air gap between the apex (35) and the arcuate elongated segment (23) of the element, and one or two longitudinal clamping surfaces (13, 14), each of said clamping surfaces being adjacent to the element base and having a plurality of transverse slots (26, 27) therein such that the unslotted area of each of the clamping surfaces is from about 20 to about 60 % of the total area of said clamping surface; and iii) the second jaw (12) has the resilient pad (31) mounted on the face which is adapted to cooperate with the first jaw, the resilient pad, the element base and the clamping surfaces of the first jaw being adapted such that when the first and second jaws are moved into contact with one another the resilient pad and the clamping surfaces firmly hold the thermoplastic films therebetween, and the resilient pad and the elongated segment of the heat sealing element exert sufficient force upon one another that when the heat sealing element is electrically heated the thermoplastic films are sealed and severed by the heat sealing element.

10. 发明申请

WO1991001939A1 PIERCING NOZZLE FOR POUCH FITMENT 审中-公开
标题翻译：刺绣喷嘴
公开(公告)号：WO1991001939A1
公开(公告)日：1991-02-21
申请号：PCT/CA1990000238
申请日：1990-07-27
申请人： DU PONT CANADA INC. , HARRISON, Raymond, Peter , WIRSIG, Ralph, Carl
发明人： DU PONT CANADA INC.
IPC分类号： B67B07/86
CPC分类号： B67B7/26
摘要： A spout is disclosed, for insertion into and securement to a plastic pouch. The spout comprises a tube (11) having a piercing portion (13) separated from a delivery portion (12) by a film securement portion (22) and having fluid flow communication from the piercing portion to the delivery portion. The film securement portion (22) is adapted to secure, with a substantially liquid-tight seal, plastic film which has been pierced by the piercing portion. The piercing portion (13) appears, in one perspective, to have been sliced at an angle to the longitudinal axis from a first location (23) at one side of said tube adjacent the film securement portion to a second location (14) at the other side of the tube, distal from the film securement portion, to form a tip (14), and to provide a slot (25) which aims to aid in draining material from the pouch, and the tip appears, in a second perspective perpendicular to the first perspective, to have been sliced symmetrically about the longitudinal axis of the tube to form a pointed piercing tip furthest away from the film securement portion (22). The contours of these slices are such that when the painted tip (14) is pushed into the film, the force required remains substantially constant.

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