专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US4334057A Continuous process for recovering polymers from their latexes 失效
标题翻译：从其胶乳中回收聚合物的连续方法
公开(公告)号：US4334057A
公开(公告)日：1982-06-08
申请号：US218085
申请日：1980-12-19
申请人： Gabriele Govoni , Gianfranco Rubichi , Pierluigi Guardigli
发明人： Gabriele Govoni , Gianfranco Rubichi , Pierluigi Guardigli
IPC分类号： C08F6/00 , B01J8/00 , B01J19/24 , B01J19/26 , C08F6/06 , C08F6/14 , C08F6/22 , C08F12/00 , C08F12/08 , C08F212/00 , C08F212/10 , C08F6/10
CPC分类号： C08F6/22 , B01J19/242 , B01J19/26 , B01J8/0055 , B01J2219/00094
摘要： Polymers are continuously recovered from their latexes obtained by polymerization in emulsion by a process comprising the following steps:(A) feeding the polymeric latexes containing 10 to 50% by weight of polymer, at a temperature of from 10.degree. to 120.degree. C., through one or more feeding channels, to the narrow zone or to the divergent section of a nozzle in which water vapor flows at sonic or supersonic speed respectively, according to vapor/latex feeding ratios of 0.1-2 Kg of vapor/Kg of latex, where the latex is subdivided by the water vapor into a dispersion of particles; and(B) continuously feeding the dispersion obtained in step (A) to a tube or an exchanger of the type tube-in-tube directly connected with the divergent section of the nozzle where the dispersion, at a temperature of 100.degree.-150.degree. C. for residence times of from 0.1 to 1 second, maintains a speed of 50-150 m/sec., so providing a dispersion of solid caked particles of polymer and of liquid particles in a vapor phase comprising the unreacted monomers and the water vapor, the vapor phase being separated from the dispersion by means of known methods.
摘要翻译：通过包括以下步骤的方法从乳液中聚合获得的胶乳连续回收聚合物：（A）在10℃至120℃的温度下加入含有10至50重量％聚合物的聚合物胶乳，根据0.1-2Kg蒸气/ Kg胶乳的蒸汽/胶乳进料比，通过一个或多个进料通道分别到窄波段或喷嘴的发散部分，其中水蒸汽以声波或超音速流动，其中胶乳被水蒸汽细分成颗粒分散体; 和（B）将在步骤（A）中获得的分散体连续地供给到与分散体在100-150℃的温度下直接连接的喷管的发散部分的管式或管式换热器的管或换热器 C.停留时间为0.1至1秒，保持速度为50-150米/秒，从而提供聚合物和液体颗粒的固体结块颗粒在包含未反应单体和水蒸气的气相中的分散体，通过已知方法将气相与分散体分离。

2. 发明授权

US4212967A Process for continuous recovery of solid polycarbonate from solutions thereof in organic solvents 失效
标题翻译：从其溶液中在有机溶剂中连续回收固体聚碳酸酯的方法
公开(公告)号：US4212967A
公开(公告)日：1980-07-15
申请号：US14161
申请日：1979-02-22
申请人： Gabriele Govoni , Giovanni Di Drusco , Canzio Corazzari , Pierluigi Guardigli
发明人： Gabriele Govoni , Giovanni Di Drusco , Canzio Corazzari , Pierluigi Guardigli
IPC分类号： C08G63/00 , B01F5/04 , C08G64/20 , C08G64/40 , C08J3/14 , C08G63/72
CPC分类号： C08J3/14 , B01F5/0416 , C08G64/205 , C08G64/403 , C08J2369/00
摘要： Solid polycarbonate is recovered continuously from solutions thereof in organic solvents by a process consisting of:(a) subdividing the polycarbonate solution by steam (water vapor) at either sonic or ultra-sonic speed by means of a De Laval type nozzle;(b) conveying the dispersion thus obtained into a tubular heat exchanger having an increasing cross-section, preferably spirally-shaped or with elbow stretches having a thermal exchange coefficient of 500-1500 Kcal/h.m.sup.2 .degree.C., in which the heat dispersion is kept at 100.degree.-140.degree. C. for periods of time comprised between 0.05 and 5 seconds;(c) separating the solid from the vapors in a cyclone;(d) drying of the solid in a water vapor fluid bed.
摘要翻译：固体聚碳酸酯通过以下工艺由有机溶剂中的溶液连续回收，该方法包括：（a）通过De Laval型喷嘴以声波或超声速将蒸汽（水蒸汽）再分成聚碳酸酯溶液; （b）将如此获得的分散体输送到具有横截面增大的管状热交换器中，该热交换器具有横截面增大，优选为螺旋形状或具有热交换系数为500-1500Kcal / h.m2℃的肘部伸长，其中热量分散体保持在100-140℃，时间为0.05-5秒; （c）在旋风分离器中将固体与蒸汽分离; （d）在水蒸气流化床中干燥固体。

3. 发明授权

US06355731B1 Process for the production of heterophasic polymer compositions, and compositions thus obtained 失效
标题翻译：用于生产多相聚合物组合物的方法和由此获得的组合物
公开(公告)号：US06355731B1
公开(公告)日：2002-03-12
申请号：US09509659
申请日：2000-03-30
申请人： Gabriele Govoni , Massimo Covezzi , Jean News
发明人： Gabriele Govoni , Massimo Covezzi , Jean News
IPC分类号： C08F29708
CPC分类号： C08F297/083 , C08F4/65912 , C08F10/00 , C08F10/06 , C08F210/06 , C08F297/08 , C08L23/0815 , C08L23/14 , C08L2207/02 , C08L2308/00 , C08F4/65927 , C08F2/001 , C08F2/42 , C08L2666/04 , C08F210/16 , C08F2500/12 , C08F2500/17
摘要： A process for the preparation of heterophasic polyolefin compositions by (i) polymerizing to form (a) a crystalline propylene or ethylene polymer, and (b) an elastomeric copolymer of ethylene and a C3-C10 &agr;-olefin, wherein the polymerizations are carried out in the presence of a Ziegler-Natta catalyst, (ii) contacting the polymer obtained in (i) with: (a) a compound capable of deactivating the catalyst present in (i), and (b) a catalyst (2) obtained by contacting (I) a compound containing a transition metal M, and at least one ligand coordinated with the metal M by a &pgr; bond, and (II) a cocatalyst, and (iii) copolymerizing ethylene and a C3-C10 &agr;-olefin in the presence of the polymer treated as in (ii), and the catalyst (2).
摘要翻译：通过（i）聚合以形成（a）结晶丙烯或乙烯聚合物和（b）乙烯和C 3 -C 10α-烯烃的弹性共聚物来制备多相聚烯烃组合物的方法，其中进行聚合在齐格勒 - 纳塔催化剂存在下，使（ⅰ）中得到的聚合物与（ⅰ）使（ⅰ）中存在的催化剂失活的化合物和（b）由（ⅰ）中得到的催化剂使（I）含有过渡金属M的化合物和至少一种通过π键与金属M配位的配体，和（II）助催化剂，和（iii）使乙烯和C 3 -C 10α-烯烃在（ii）中处理的聚合物的存在和催化剂（2）。

4. 发明授权

US4316009A Process for the purification of polycarbonate solutions 失效
标题翻译：聚碳酸酯溶液净化工艺
公开(公告)号：US4316009A
公开(公告)日：1982-02-16
申请号：US117787
申请日：1980-02-01
申请人： Roberto Rinaldi , Gabriele Govoni , Francesco Visani
发明人： Roberto Rinaldi , Gabriele Govoni , Francesco Visani
IPC分类号： C08G63/00 , C08G64/40 , C08J3/16
CPC分类号： C08G64/406
摘要： Organic-solvent solutions of polycarbonates containing impurities, e.g., sodium chloride and sodium carbonate formed during the preparation of the polycarbonates, and/or catalysts, are purified by sending aqueous emulsions of polycarbonates in water-immiscible organic solvents, in particular the aqueous emulsions coming from the various purification phases of the organic polycarbonate solutions obtained in the synthesis, through a layer of fibers in which the dispersed droplets of the emulsion coalesce, with the formation of two layers each consisting essentially of one of the two separate phases of the emulsion.
摘要翻译：含有杂质的聚碳酸酯的有机溶剂溶液，例如在制备聚碳酸酯期间形成的氯化钠和碳酸钠和/或催化剂，通过将聚碳酸酯的水性乳液送到与水不混溶的有机溶剂中，特别是水乳液来进行纯化通过合成中获得的有机聚碳酸酯溶液的各种净化阶段，通过其中分散的乳液聚集的纤维层，形成两层，每层基本上由乳液的两个分离相中的一个组成。

5. 发明授权

US06686307B2 Magnesium dichloride-alcohol adducts 有权
标题翻译：二氯化镁 - 醇加合物
公开(公告)号：US06686307B2
公开(公告)日：2004-02-03
申请号：US09993512
申请日：2001-11-05
申请人： Mario Sacchetti , Gabriele Govoni , Anna Fait
发明人： Mario Sacchetti , Gabriele Govoni , Anna Fait
IPC分类号： B01J3100
CPC分类号： B01J27/138 , B01J31/0201 , C08F10/00 , C08F110/06 , C08F4/6545 , C08F2500/18 , C08F2500/20 , C08F4/6543 , C08F4/022
摘要： The present invention relates to MgCl2.mROH.nH2O adducts, where R is a C1-C10 alkyl, 2≦m≦4.2, 0≦n≦0.7, characterized by an X-ray diffraction spectrum in which, in the range of 2&thgr; diffraction angles between 5° and 15°, the three main diffraction lines are present at diffraction angles 2&thgr; of 8.8±0.2°, 9.4±0.2° and 9.8±0.2°, the most intense diffraction lines being the one at 2&thgr;=8.8±0.2°, the intensity of the other two diffraction lines being at least 0.2 times the intensity of the most intense diffraction line. Catalyst components obtained from the adducts of the present invention are capable to give catalysts for the polymerization of olefins characterized by enhanced activity and stereospecificity with respect to the catalysts prepared from the adducts of the prior art.
摘要翻译：本发明涉及MgCl 2·mROH·nH 2 O加合物，其中R是C 1 -C 10烷基，2 <= m <= 4.2,0 <= n <0.7，其特征在于X射线衍射光谱，其中在 2θ衍射角在5°和15°之间的范围内，三条主要的衍射线分别以8.8±0.2°，9.4±0.2°和9.8±0.2°的衍射角2θ处存在，最强的衍射线为2θ= 8.8±0.2°，其他两条衍射线的强度是最强衍射线强度的0.2倍。由本发明的加合物得到的催化剂成分能够提供用于烯烃聚合的催化剂，其特征在于增强的相对于由现有技术的加合物制备的催化剂的活性和立体定向性。

6. 发明授权

US5698642A Process and apparatus for the gas-phase polymerization of .alpha.-olefins 失效
标题翻译： α-烯烃气相聚合的方法和装置
公开(公告)号：US5698642A
公开(公告)日：1997-12-16
申请号：US684411
申请日：1996-07-19
申请人： Gabriele Govoni , Roberto Rinaldi , Massimo Covezzi , Paolo Galli
发明人： Gabriele Govoni , Roberto Rinaldi , Massimo Covezzi , Paolo Galli
IPC分类号： B01J8/18 , B01J8/38 , B01J19/24 , C08F2/00 , C08F2/34 , C08F10/00 , C08F110/06 , C08F210/16
CPC分类号： C08F10/00 , B01J19/2435 , B01J8/1863 , B01J8/388 , C08F110/06 , C08F210/16 , Y10S526/901
摘要： Process for gas-phase polymerization carried out in two interconnected polymerization zones, to which one or more .alpha.-olefins CH.sub.2 .dbd.CHR are fed in the presence of catalyst under reaction conditions and from which the polymer product is discharged. The process is characterized in that the growing polymer flows through a first polymerization zone under fast fluidization conditions, leaves said first zone and enters a second polymerization zone through which it flows in a densified form under the action of gravity, leaves said second zone and is reintroduced into the first polymerization zone, thus establishing a circulation of polymer around the two polymerization zones. The novel process allows olefins to be polymerized in the gas phase with high productivity per unit volume of the reactor without incurring the problems of the fluidized-bed technologies of the known state of the art.
摘要翻译：在两个相互连接的聚合区中进行气相聚合的方法，在催化剂存在下，在反应条件下将一种或多种α-烯烃CH 2 = CHR加入其中，聚合物产物从其中排出。该方法的特征在于，生长的聚合物在快速流化条件下流过第一聚合区，离开所述第一区并进入第二聚合区，通过该第二聚合区，其在重力作用下以致密化形式流动，离开所述第二区，并且是重新引入第一聚合区，从而建立聚合物周围两个聚合区的循环。该新方法允许烯烃在气相中以每单位体积的反应器的高生产率聚合，而不会引起现有技术的流化床技术的问题。

7. 发明授权

US5698487A Components and catalysts for the polymerization of olefins 失效
标题翻译：用于烯烃聚合的组分和催化剂
公开(公告)号：US5698487A
公开(公告)日：1997-12-16
申请号：US451008
申请日：1995-05-25
申请人： Mario Sacchetti , Stefano Pasquali , Gabriele Govoni
发明人： Mario Sacchetti , Stefano Pasquali , Gabriele Govoni
IPC分类号： C08F4/02 , C08F4/642 , C08F4/651 , C08F4/654 , C08F4/659 , C08F4/6592 , C08F10/00 , C08F210/16 , C08F4/634
CPC分类号： C08F10/00 , C08F4/65912 , C08F4/65916 , C08F4/65922 , Y10S526/904 , Y10S526/943
摘要： The present invention relates to components of catalysts for the polymerization of olefins comprising a metallocene compound and a magnesium halide which have particular values of porosity and surface area. In particular the components of the invention have surface area (BET) greater than about 50 m.sup.2 /g, porosity (BET) greater than about 0.15 cm.sup.3 /g and porosity (Hg) greater than 0.3 cm.sup.3 /g, with the proviso that when the surface area is less than about 150 m.sup.2 /g, the porosity (Hg) is less than about 1.5 cm.sup.3 /g. The components of the invention are particularly suitable for the preparation of catalysts for the gas-phase polymerization of .alpha.-olefins.
摘要翻译：本发明涉及包含茂金属化合物和卤化镁的烯烃聚合用催化剂的组分，其具有特定的孔隙率和表面积值。特别地，本发明的组分具有大于约50m 2 / g的表面积（BET），大于约0.15cm 3 / g的孔隙率（BET）和大于0.3cm 3 / g的孔隙率（Hg），条件是当表面积小于约150m2 / g，孔隙率（Hg）小于约1.5cm 3 / g。本发明的组分特别适用于制备用于α-烯烃的气相聚合的催化剂。

8. 发明授权

US5610244A Process for the gas phase polymerization of alpha-olefins 失效
标题翻译： α-烯烃气相聚合方法
公开(公告)号：US5610244A
公开(公告)日：1997-03-11
申请号：US537708
申请日：1995-12-08
申请人： Gabriele Govoni , Roberto Rinaldi , Giuseppe Penzo
发明人： Gabriele Govoni , Roberto Rinaldi , Giuseppe Penzo
IPC分类号： B01J8/24 , B01J8/00 , B01J8/26 , C08F2/34 , C08F10/00 , C08F210/02
CPC分类号： C08F10/00 , B01J8/0015 , B01J8/26 , Y10S526/901
摘要： A process for polymerizing olefins using a fluidized bed, in which the monomer entry point is located at a point above the bed height. A pre-polymerization step can be conducted using a Z/N catalyst along with an alkane diluent, and resultant liquid phase is introduced into the fluidized bed above the bed height. The process may use several reactors in series arrangement.
摘要翻译： PCT No.PCT / EP95 / 00544 Sec。 371 1995年12月8日第 102（e）日期1995年12月8日PCT提交1995年2月15日PCT公布。出版物WO95 / 22565 日期1995年8月24日使用流化床聚合烯烃的方法，其中单体入口点位于床高度上方。可以使用Z / N催化剂和烷烃稀释剂进行预聚合步骤，并将所得液相引入床高度上方的流化床。该方法可以使用几个串联的反应器。

9. 发明授权

US5231119A Crystalline olefin polymers and copolymers in the form of spherical particles at high porosity 失效
标题翻译：具有高孔隙率的球形颗粒形式的结晶烯烃聚合物和共聚物
公开(公告)号：US5231119A
公开(公告)日：1993-07-27
申请号：US718680
申请日：1991-06-21
申请人： Gabriele Govoni , Antonio Ciarrocchi , Mario Sacchetti
发明人： Gabriele Govoni , Antonio Ciarrocchi , Mario Sacchetti
IPC分类号： C08F4/02 , C08F2/00 , C08F4/00 , C08F4/42 , C08F8/00 , C08F10/00 , C08F10/02 , C08F12/00 , C08F110/02 , C08F210/06 , C08J3/12 , C08J3/20 , C08J3/22 , C08J9/28
CPC分类号： C08F10/00 , C08J3/12 , C08J3/226 , C08F110/02
摘要： Crystalline olefin polymers and copolymers in the form of spherical particles having porosity (expressed in percentage of voids) higher than 15%, with more than 90% of the pores having a pore diameter greater than one micron. These polymeric particulate materials find many applications, including, e.g., the preparation of masterbatches containing significant quantities of additives and/or pigments.
摘要翻译：具有高于15％的孔隙率（以空隙百分比表示）的球形颗粒形式的结晶烯烃聚合物和共聚物，其中超过90％的孔具有大于1微米的孔径。这些聚合物颗粒材料有许多应用，包括例如制备含有大量添加剂和/或颜料的母料。

10. 发明授权

US4252968A Process for preparing granular polycarbonate 失效
标题翻译：颗粒状聚碳酸酯的制备方法
公开(公告)号：US4252968A
公开(公告)日：1981-02-24
申请号：US43465
申请日：1979-05-29
申请人： Gabriele Govoni , Roberto Flammini , Remo Vaccari , Pier L. Guardigli
发明人： Gabriele Govoni , Roberto Flammini , Remo Vaccari , Pier L. Guardigli
IPC分类号： B29B13/00 , B01J19/18 , B29B9/00 , B29B9/08 , B29B13/02 , B29B13/06 , B29K69/00 , C08J3/12 , C08J11/02
CPC分类号： C08J3/12 , B01J19/18 , B29B13/065 , B01J2219/00094 , B01J2219/185 , B29K2069/00 , C08J2369/00
摘要： A continuous process for simultaneously drying, thickening and increasing the flowability and processibility of polycarbonate powders is disclosed. The powders are fed to a tubular drier equipped with a mechanical stirrer in which they are fluidized with the aid of a stream of heated inert gas or vapor flowing counter-currently to the powders.
摘要翻译：公开了一种用于同时干燥，增稠和增加聚碳酸酯粉末的流动性和加工性的连续方法。粉末被送入装有机械搅拌器的管式干燥器中，借助于与粉末相反流动的加热的惰性气体或蒸气流，使其流化。

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