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1.发明授权Process for the preparation of manufactured products based on vinylaromatic polymers with a predominantly syndiotactic structure 失效基于主要间同立构结构的乙烯基芳族聚合物制备制造产品的方法
公开(公告)号：US6066280A
公开(公告)日：2000-05-23
申请号：US10117
申请日：1998-01-21
CPC分类号： B29C43/006 , B29C43/003 , B29K2025/00 , B29K2105/251
摘要： Process for the preparation of manufactured products based on vinylaromatic polymers with a predominantly syndiotactic structure which comprises:a) compressing the polymer in powder form in a mould at a pressure ranging from 0.1 to 500 MPa;b) sintering, under pressure, the compact powder at a temperature ranging from the glass transition temperature (Tg) of the polymer to the melting temperature (Tm);c) cooling the manufactured product to room temperature.
摘要翻译： 用于制备基于主要间同立构结构的乙烯基芳族聚合物的制造产品的方法，该方法包括：a）在0.1至500MPa的压力下，将模具中的粉末形式的聚合物压缩; b）在压力下，在从聚合物的玻璃化转变温度（Tg）到熔融温度（Tm）的温度范围内烧结致密粉末; c）将制成品冷却至室温。
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2.发明授权Process for preparing high molecular weight polyethylene-terephthalate from recycled polyethyleneterephthalate 失效从再生聚对苯二甲酸乙二醇酯制备高分子量聚对苯二甲酸乙二醇酯的方法
公开(公告)号：US5331065A
公开(公告)日：1994-07-19
申请号：US088314
申请日：1993-07-07
申请人： Riccardo Po' , Nicoletta Cardi , Luisa Fiocca , Antonio Gennaro , Giorgio Giannotta , Ernesto Occhiello
发明人： Riccardo Po' , Nicoletta Cardi , Luisa Fiocca , Antonio Gennaro , Giorgio Giannotta , Ernesto Occhiello
CPC分类号： C08G63/916 , C08J11/04 , C08J2367/02 , Y02P20/143 , Y02W30/70
摘要： Polyethyleneterephthalate (PET) originating from the sorted collection of solid urban refuse can be regraded and recycled as such or mixed with virgin PET if treated at high temperature with an oxazoline of general formula: ##STR1##
摘要翻译： 源于固体城市垃圾分类收集的聚对苯二甲酸乙二醇酯（PET）可以重新分级回收，如果在高温下用恶唑啉处理，则与原始PET混合，如下所示：
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3.发明授权Process for preparing iron-based catalysts for the synthesis of ammonia and catalysts so obtained 失效制备用于合成氨的铁基催化剂和如此获得的催化剂的方法
公开(公告)号：US4789657A
公开(公告)日：1988-12-06
申请号：US112051
申请日：1987-10-23
IPC分类号： B01J23/745 , B01J23/76 , B01J23/78 , B01J37/00 , B01J37/08 , C01C1/04 , B01J21/04 , B01J21/08
CPC分类号： B01J37/00 , B01J23/745 , B01J23/76 , B01J37/08 , C01C1/0411 , Y02P20/52
摘要： A process for preparing iron-based catalysts for the synthesis of ammonia by melting of magnetite along with metal oxides as promoters, subsequent cooling of the molten mass and reduction thereof to the desired size, wherein the abovesaid cooling occurs at a rate higher than 25.degree. C./min., preferably ranging from 100.degree. C. to 1600.degree. C./min., at a temperature ranging from 1700.degree. C. to 700.degree. C.The present invention relates to a process for preparing iron-based catalysts having a high activity in the ammonia synthesis, and to the catalyst so obtained.
摘要翻译： 一种制备用于合成氨的铁基催化剂的方法，该方法是将磁铁矿与金属氧化物一起熔化，作为促进剂，随后冷却熔融物料并将其还原成所需尺寸，其中上述冷却速率高于25℃ 优选在100℃至1600℃/分钟的范围内，在1700℃至700℃的温度下进行。本发明涉及一种制备铁基催化剂的方法，该方法具有 氨合成中的高活性，以及如此得到的催化剂。
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4.发明申请Rhenium Catalyst Supported on Modified Alumina and Use Thereof in the Metathesis Reaction of Olefins 审中-公开负载在改性氧化铝上的铼催化剂及其在烯烃复分解反应中的应用公开(公告)号：US20070225478A1
公开(公告)日：2007-09-27
申请号：US11579054
申请日：2005-03-08
CPC分类号： B01J23/36 , B01J21/04 , B01J23/8896 , B01J37/0207 , B01J37/0209 , C07C6/04 , C07C6/06 , C07C2521/04 , C07C2523/16 , C07C2527/10 , C07C11/02
摘要： A heterogeneous catalyst is described, active in the metathesis reaction of olefins comprising alumina as inert carrier and a rhenium compound as active component, characterized in that rhenium is present in an amount of less than 5% by weight with respect to the total preferably from 1 to 4% by weight, and the inert carrier is impregnated with at least one inorganic halide selected from FeCl3, CuCl2, TiCl4, RuCl3, ZnCl2 and NH4Cl, and/or the corresponding bromides or iodides and, subsequently, treated at a high temperature.
摘要翻译： 描述了非均相催化剂，其在包含氧化铝作为惰性载体的烯烃和作为活性组分的铼化合物的复分解反应中有活性，其特征在于铼的存在量相对于总计优选为1重量份小于5重量％ 至4重量％，惰性载体用至少一种选自FeCl 3 3，CuCl 2，TiCl 4， RuCl 3 3，ZnCl 2和NH 4 Cl，和/或相应的溴化物或碘化物，随后在高温下处理。
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5.发明授权Alpha-alumina in the form of spherical non-aggregated particles having a narrow size distribution and sizes below 2 microns and process for preparing same 失效具有窄尺寸分布和尺寸低于2微米的球形非聚集颗粒形式的α-氧化铝及其制备方法
公开(公告)号：US4818515A
公开(公告)日：1989-04-04
申请号：US102295
申请日：1987-09-25
CPC分类号： B82Y30/00 , C01F7/441 , C01P2004/03 , C01P2004/32 , C01P2004/54 , C01P2004/61 , C01P2004/62 , C01P2004/64 , C01P2006/10 , C01P2006/12 , C01P2006/14
摘要： Alpha-alumina consisting essentially of solid, spherical, non-aggregated particles, having a diameter from 0.06 to 2 .mu.m, a polydispersion index below 2.0, a total porosity below 0.3 cc/g, a specific surface area from 0.7 to 80 m.sup.2 /g, and an apparent density of the particles from 3.20 to 3.94 g/cm.sup.3. The alpha-alumina is prepared by a process consisting, in that an alpha-alumina precursor, having a water content from 2 to 33% by weight, at starting temperatures ranging from room temperature to 850.degree. C., and consisting essentially of solid spherical, non-aggregated particles, having a particle diameter from 0.07 to 2.3 .mu.m and a polydispersion index of .ltoreq.2.0, is subjected to a heat-treatment at temperatures ranging from 1130.degree. to 1700.degree. C., said precursor being instantaneously brought from the starting temperature to the treatment temperature, and by carrying out the treatment during times, as generally indicated in the accompanying FIG. 1 between straight lines (a) and (b), which are sufficient to convert the precursor to phase alpha, but not such as to cause breakages and/or aggregations; the resulting product being then brought again to room temperature by means of a non-instantaneous cooling of the order of at least 10 seconds.
摘要翻译： 基本上由固体，球形，非凝集颗粒组成的α-氧化铝，其直径为0.06至2μm，多分散指数低于2.0，总孔隙率低于0.3cc / g，比表面积为0.7至80m2 / g，颗粒的表观密度为3.20〜3.94g / cm 3。 α-氧化铝通过以下方法制备：α-氧化铝前体，其水含量为2-33重量％，起始温度为室温至850℃，基本上由固体球形 ，粒径为0.07〜2.3μm，分散指数为2.0的非凝集粒子在1130〜1700℃的温度下进行热处理，所述前体即时带入 从起始温度到处理温度，并且通过在时间期间进行处理，如附图中通常所示。 在直线（a）和（b）之间的直线（1），其足以将前体转化为α相，但不会导致断裂和/或聚集; 然后通过至少10秒的次数的非瞬时冷却将所得产物再次升至室温。
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