专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

61. 发明授权

US5175276A Process for the production of cellulose ester fibrets 失效
标题翻译：生产纤维素酯纤维素的方法
公开(公告)号：US5175276A
公开(公告)日：1992-12-29
申请号：US627082
申请日：1990-12-14
申请人： Samuel S. McNair, Jr. , David M. Gault
发明人： Samuel S. McNair, Jr. , David M. Gault
IPC分类号： D01D5/40 , D01F2/28 , D21H13/02 , D21H13/08
CPC分类号： D01D5/40 , D01F2/28
摘要： An improved process for the production of cellulose ester fibrets wherein a thickened slurry of the fibrets in a liquid mixture of a solvent for the fibrets and a fibret non-solvent is contacted with saturated steam in the separation of the solvent from the fibrets.

62. 发明授权

US4836507A Aramid staple and pulp prepared by spinning 失效
标题翻译：通过纺丝制备芳纶短纤维和纸浆
公开(公告)号：US4836507A
公开(公告)日：1989-06-06
申请号：US83186
申请日：1987-08-10
申请人： Hung H. Yang
发明人： Hung H. Yang
IPC分类号： D01D5/06 , D01D5/26 , D01D5/40 , D01F6/60
CPC分类号： D01F6/605 , D01D5/26 , D01D5/40 , Y10T428/24149
摘要： Directly spinning highly oriented staple fibers of para-aramids using a dry-jet wet-spinning process in which the filaments in the gap between the spinneret and the coagulating fluid are attenuated with a liquid jetted symmetrically about the filaments at a rate sufficient to break the filaments intermittently to form staple length fibers that taper along their length from an enlarged head.

63. 发明授权

US4320210A Ethylene polymer fibrils 失效
标题翻译：乙烯聚合物原纤维
公开(公告)号：US4320210A
公开(公告)日：1982-03-16
申请号：US215905
申请日：1980-12-12
申请人： Jin K. Kim , Clarence R. Murphy , Edward W. Smith
发明人： Jin K. Kim , Clarence R. Murphy , Edward W. Smith
IPC分类号： C08J3/00 , D01D5/40 , D01F6/04 , C08L23/26 , C08L23/06 , C08L29/04
CPC分类号： D01D5/40 , D01F6/04 , D21H13/14 , D21H5/202
摘要： Improved ethylene polymer fibrils are provided which are characterized in having:(a) a melt temperature of at least about 137.degree. C.,(b) a molecular weight of at least 250,000,(c) at least about 1.2 weight % of polyvinyl alcohol sorbed thereon, and(d) a zero-span breaking length of at least about 25,000.Water-laid sheets prepared from the fibrils have the following minimum factored values:Mullen Burst: 30 psiElmendorf Tear Strength: 300 grams/sheetTensile Strength: 15 lbs/inchElongation at Break: 40%
摘要翻译：提供了改进的乙烯聚合物原纤维，其特征在于具有：（a）至少约137℃的熔融温度，（b）至少250,000的分子量，（c）至少约1.2重量％的聚乙烯醇吸附在其上，（d）零跨度断裂长度至少约为25,000。从原纤维制备的水性片材具有以下最小因子值：马伦爆裂：30 psi Elmendorf撕裂

64. 发明授权

US4212848A Apparatus and process for the manufacture of fibrils 失效
标题翻译：用于制造原纤维的装置和方法
公开(公告)号：US4212848A
公开(公告)日：1980-07-15
申请号：US817325
申请日：1977-07-20
申请人： Robert E. Boehme , Clarence R. Murphy
发明人： Robert E. Boehme , Clarence R. Murphy
IPC分类号： B01F1/00 , B01F7/16 , D01D1/02 , D01D5/40 , B01F7/04
CPC分类号： B01F7/169 , B01F1/0011 , B01F1/0022 , B01F1/0033 , D01D1/02 , D01D5/40 , B01F2215/0049 , Y10S422/901
摘要： The invention is directed to an apparatus useful for dissolving high molecular weight olefin polymers in a hot hydrocarbon solvent. The apparatus includes:(a) A plurality of interconnected fluid chambers, each of which has a fluid inlet and a fluid outlet,(b) Screens covering the inlet and the outlet of each fluid chamber; the screen covering the outlet having a smaller mesh than the screen covering the inlet,(c) Stirring means in each fluid chamber adapted to sweep retained polymer particles free of the screen covering the outlet of said chamber,(d) Means for pumping fluid through the fluid chambers, and(e) Means for supplying heat to fluid passing through the apparatus.
摘要翻译：本发明涉及一种用于将高分子量烯烃聚合物溶解在热烃溶剂中的装置。该装置包括：（a）多个相互连接的流体室，每个流体室具有流体入口和流体出口，（b）覆盖每个流体室的入口和出口的筛网; 覆盖出口的筛网比覆盖入口的筛网小，（c）每个流体室中的搅拌装置，其适于扫掠覆盖所述室的出口的筛网的残留聚合物颗粒，（d）用于泵送流体的装置流体室，和（e）用于向穿过设备的流体供应热量的装置。

65. 发明授权

US4140537A Aqueous collagen composition 失效
标题翻译：水性胶原蛋白组合物
公开(公告)号：US4140537A
公开(公告)日：1979-02-20
申请号：US744536
申请日：1976-11-24
申请人： Edward E. Luck , John R. Daniels
发明人： Edward E. Luck , John R. Daniels
IPC分类号： A61F2/00 , A61K9/00 , A61L15/32 , A61L17/08 , A61L26/00 , A61L27/24 , A61L29/00 , B01D71/74 , C07K14/78 , C08L89/06 , D01D5/40 , D01F4/00
CPC分类号： A61K9/0024 , A61L15/325 , A61L17/08 , A61L26/0033 , A61L27/24 , B01D71/74 , C08L89/06 , D01D5/40 , D01F4/00 , A61F2310/00365
摘要： The naturally occurring collagen is modified by removal of certain terminal peptide chains, which are described as telopeptides. The modified collagen, so derived, is described as atelopeptide collagen. Native collagen is immunogenic, while atelopeptide collagen is nonimmunogenic or possessed of a negligibly low level of immunogenicity.The collagen in solution is then treated according to a specific regimen under conditions whereby the collagen slowly separates from solution while exposed to mild shear forces. This procedure results in the formation of a fibrous precipitate composed of regularly ordered fibers of collagen possessed of a ropelike structure. These resulting aggregates are referred to as native fibrous micropolymers (NFM). Once the regimen or procedure is completed, and the fiber mass has been formed, the fibrous micropolymers may be freed of salt, taken up in a different solution or modified. For example, cross-links may then be introduced to stabilize the fibers. The products find wide use as packing, membranes, fibers, bags, supports, integuments, and are especially suitable for biologic implantation or application.
摘要翻译：通过去除被描述为端肽的某些末端肽链修饰天然存在的胶原蛋白。如此衍生的经修饰的胶原被描述为去糖肽胶原。天然胶原蛋白是免疫原性的，而阿片肽胶原蛋白是非免疫原性的或具有可忽略的低水平的免疫原性。

66. 发明授权

UST969008I4 Production of oriented fibrillar products 失效
标题翻译：生产定向纤维制品
公开(公告)号：UST969008I4
公开(公告)日：1978-04-04
申请号：US784630
申请日：1977-04-04
申请人： Frederic Neil Cogswell , Jiri George Tomka
发明人： Frederic Neil Cogswell , Jiri George Tomka
IPC分类号： D01D5/098 , B29C47/00 , B29C47/94 , C08G73/08 , D01D5/40
CPC分类号： B29C47/94 , B29C47/0004 , B29C47/0021 , B29C47/0026 , B29C47/003 , B29K2079/00 , B29K2105/0079 , B29K2105/04 , B29K2995/0051 , C08G73/08 , Y10S264/47
摘要： the process for the production of an oriented fibrillar product from a polyarylene-oxadiazole which is heat-softenable without substantial degradation when in an air-free inert atmosphere comprises extruding contiguously disposed particles of the polymer, which particles are heat-softened but non-molten and are blanketed in an air-free atmosphere of an inert fluid, through a die to produce a substantially non-degraded oriented fibrillar product. Means are provided, if necessary, to substantially prevent relaxation of the orientation resulting from the extrusion.Particularly preferred polyarylene-oxadiazoles for use according to the process are the amorphous and non-crystallizable copolymeric polyphenylene-1,3,4-oxadiazoles having the characteristic repeating units ##STR1## where R.sub.1 is a p-phenylene radical, R.sub.2 is a m-phenylene radical, the ratio of R.sub.1 radicals to R.sub.2 radicals is within the range 60/40 to 10/90, and the R.sub.1 and/or R.sub.2 radicals are sufficiently substituted with bulky groups such as bromine atoms to inhibit crystallisation of the polymer.Preferably steam and/or water is the protective fluid and is derived from water associated with the polymer particles, the steam being formed by vaporization of the water during extrusion. The particles are usually in the form of a wet cake. The associated water may be present only as surface water (which has not significantly penetrated into the particles) or as water which has significantly penetrated into the polymer particles prior to extrusion. The use of liquid-interpenetrated particles is advantageous in that the vapor and/or compressed liquid provides a high pressure which provides a driving force for the extrusion and also the interpenetrated liquid flashes off from the extrudate leaving the die thereby rapidly cooling the extrudate throughout its thickness and freezing in the orientation.The extrusion product is an attractive paper-like tape, ribbon or sheet comprised of very stiff fibrils and is usually rather porous. The product can be used as such, or when coextruded with other stiff fiber-forming polymers to obtain a highly reinforced extrudate. The fibrous extrudate can also be used as a base within the interstices of which other monomers may be polymerized.

67. 发明授权

US4069287A Process for the production of polyolefin fibers 失效
标题翻译：生产聚烯烃纤维的方法
公开(公告)号：US4069287A
公开(公告)日：1978-01-17
申请号：US708067
申请日：1976-07-23
申请人： Joseph Aboulafia , Richard Le Fustec , Claude Schranz
发明人： Joseph Aboulafia , Richard Le Fustec , Claude Schranz
IPC分类号： D01D5/40 , D21F11/00
CPC分类号： D01D5/40 , D21H13/14 , D21H5/202
摘要： A process and apparatus for manufacturing polyolefin fibers from a composition of the said polyolefins dissolved in a diluent, by subjecting the composition to flow at a velocity above a critical value in a tube or bundle of tubes, the temperature of the composition being within the range of critical temperatures of the said composition over at least a portion of the length of the tube or bundle of tubes and separating the fibers from the liquid diluent. The critical temperature range is below the temperature of solution of the polyolefin in the molten state in a diluent and is more specifically the range of temperatures in which the polyolefin remains in dissolved condition when the solution mixture is maintained at rest but precipitates when the mixture is subjected to certain disturbances such as, for instance, shearing. This typically is between 70.degree. and 130.degree. C. The lower limits of the critical velocity and the critical temperature are determined by the appearance of undesired powder co-precipitating with the fibers.In a variation the composition contains fibrous material (e.g. cellulose) insoluble in the diluent, yielding an interlaced fiber mix (useful in paper making, among other things).In a further improvement to avoid formation of "nodules" (i.e. random agglomerations of fibers), said tube(s) is provided with at least one restriction decreasing the cross-section of the tube(s); e.g. by a diaphragm, conical nozzle, very short inner tube, etc.
摘要翻译：通过使组合物在管或管束中以高于临界值的速度流动，从溶解在稀释剂中的所述聚烯烃的组合物制造聚烯烃纤维的方法和装置，组合物的温度在该范围内所述组合物在管或管束的至少一部分长度上的临界温度，并将纤维与液体稀释剂分离。临界温度范围低于稀释剂中熔融状态下聚烯烃溶液的温度，更具体地说，当溶液混合物保持静止时聚烯烃保持溶解状态的温度范围，当混合物为受到某些扰动，例如剪切。这通常在70°和130°C之间。临界速度和临界温度的下限是由与纤维共沉淀的不需要的粉末的外观决定的。

68. 发明授权

US4007247A Production of fibrils 失效
标题翻译：原纤维的生产
公开(公告)号：US4007247A
公开(公告)日：1977-02-08
申请号：US399273
申请日：1973-09-20
申请人： Denis George Harold Ballard , Robert Thomas Murray , George Michael Fingland Jeffs
发明人： Denis George Harold Ballard , Robert Thomas Murray , George Michael Fingland Jeffs
IPC分类号： D01F6/92 , D01D5/04 , D01D5/11 , D01D5/26 , D01D5/40 , D01F6/04 , D01F6/60 , D01F6/62 , D01F6/84 , D21H13/10
CPC分类号： D01D5/11 , D01D1/02 , D01D5/04 , D01F6/04
摘要： Fibrils of thermoplastic polymer, particularly crystalline thermoplastic polymers such as polyethylene and polypropylene, are prepared by forcing a dispersion of heat softened polymer particles in a liquid medium through a pair of opposed co-axial orifices. The liquid medium is preferably aqueous and is pressurized to prevent boiling. The resulting fibrils have some degree of molecular orientation, and may be useful in the production of reinforced paper.
摘要翻译：热塑性聚合物，特别是结晶热塑性聚合物如聚乙烯和聚丙烯的原纤维通过强制通过一对相对的同轴孔的热软化聚合物颗粒在液体介质中的分散体来制备。液体介质优选是水性的并被加压以防止沸腾。所得的原纤维具有一定程度的分子取向，并且可用于生产增强纸。

69. 发明授权

US3849387A Process of forming polyolefin fibers 失效
标题翻译：形成聚烯烃纤维的工艺
公开(公告)号：US3849387A
公开(公告)日：1974-11-19
申请号：US23542072
申请日：1972-03-16
申请人： FOWELLS R , DAMON R , COMA J
发明人： DAMON R , COMA J , FOWELLS R
IPC分类号： B01J3/04 , B01J19/18 , D01D5/38 , D01D5/40 , C08F3/06 , C08F3/10 , C08F15/04
CPC分类号： B01J19/18 , B01J3/04 , B01J2219/00033 , B01J2219/00094 , D01D5/38 , D01D5/40
摘要： 1. A PROCESS OF PREPARING FIBERS OF POLYOLEFINS COMPRISING POLYMERIZING AN OLEFIN IN THE PRESENCE OF A COORDINATION CATALYST SYSTEM IN A REACTION MEDIUM WHOSE SOLUBILITY PARAMETER IS SUCH THAT ($S-$P)2 IS LESS THAN ABOUT 3.0 CAL./CC. AND AT A TEMPERATURE LESS THAN THE MELT DISSOLUTION TEMPERATURE OF THE POLYOLEFIN TO BE FORMED, AND SUBJECTING SAID POLYMERIZATION SOLUTION TO A POSITIVE SHEAR STRESS OF GREATER THAN ABOUT ZERO POUND (FORCE)/ SQUARE FOOT UP TO ABOUT 0.1 POUND (FORCE)/SQUARE FOOT DURING POLYMERIZATION, THE MAGNITUDE OF SAID SHEAR STRESS BEING SUFFICIENTLY GREAT TO PRECIPITATE THE POLYOLEFIN AS A FIBROUS GEL HAVING A FIBRILLAR STRUCTURE OF FIBROUS POLYOLEFIN IN WHICH THE INTERCONNECTING CAPILLARY SPACES ARE FILLED WITH REACTION MEDIUM, SAID MAGNITUDE SHEAR STRESS BEING LESS THAN THAT AMOUNT WHICH WOULD CAUSE THE DIRECT FORMATION OF A SUBSTANTIAL AMOUNT OF DISCRETE FIBERS DIRECTLY RECOVERABLE WITHOUT REQUIRING FURTHER PROCESSING STEPS, AND SUBSEQUENTLY SUBJECTING SAID FIBROUS GEL FORMED DURING POLYMERIZATION TO A SHEAR STRESS OF GREATER THAN ABOUT 0.1 POUND (FORCE)/SQUARE FOOT, THEREBY PRODUCING DISCRETE, DIRECTLY RECOVERABLE, POLYOLEFIN FIBERS WITHOUT REQUIRING FURTHER PROCESSING STEPS.

70. 发明授权

US3349052A Thermoplastic fibers and method of preparing same 失效
标题翻译：热塑性纤维及其制备方法
公开(公告)号：US3349052A
公开(公告)日：1967-10-24
申请号：US43693665
申请日：1965-03-03
申请人： SUN OIL CO
发明人： RALPH ZAAYENGA , BARTHOLF FRANCIS B
IPC分类号： D01D5/40 , D01F6/04
CPC分类号： D01F6/04 , D01D5/40

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式