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公开(公告)号：US4755627A
公开(公告)日：1988-07-05
申请号：US934366
申请日：1986-11-24
摘要： Diisopropenylbenzene is a monomer that can be used in the preparation of many useful polymers and is also a chemical intermediate that can be employed in a number of chemical processes. Diisopropenylbenzene is normally synthesized by the dehydrogenation of diisopropylbenzene. Unfortunately in this dehydrogenation process a number of olefinic impurities are produced as by-products. This invention discloses a process for the separation of diisopropenylbenzene from these impurities and for recycling some of the impurities. In one embodiment of this invention this process comprises: (1) hydrogenating diisopropylbenzene to form a dehydrogenation mixture containing diisopropenylbenzene and organic impurities, (2) continuously distilling said dehydrogenation mixture to separate said diisopropenylbenzene from said organic impurities, (3) fully hydrogenating said organic impurities to form a mixture of regenerated diisopropylbenzene and saturated organic impurities, and (4) fractionally distilling said mixture of regenerated diisopropylbenzene and saturated organic impurities under conditions sufficient to operate said regenerated diisopropylbenzene from said saturated organic impurities. The regenerated diisopropylbenzene can then be recycled for dehydrogenation with fresh diisopropylbenzene in the first step of the above described process.
摘要翻译： 二异丙烯基苯是可用于制备许多有用聚合物的单体，也是可用于多种化学方法的化学中间体。 二异丙烯基苯通常通过二异丙基苯的脱氢合成。 不幸的是，在该脱氢方法中，产生许多烯属杂质作为副产物。 本发明公开了一种从这些杂质中分离二异丙烯基苯并再循环一些杂质的方法。 在本发明的一个实施方案中，该方法包括：（1）氢化二异丙基苯以形成含有二异丙烯基苯和有机杂质的脱氢混合物，（2）连续蒸馏所述脱氢混合物以从所述有机杂质中分离出所述二异丙烯基苯，（3）将所述有机物完全氢化 杂质以形成再生的二异丙基苯和饱和有机杂质的混合物，和（4）在足以从所述饱和有机杂质操作所述再生的二异丙基苯的条件下，将再生的二异丙基苯和饱和有机杂质的混合物分馏。 然后可以在上述方法的第一步中将再生的二异丙基苯再循环用于用新鲜的二异丙基苯进行脱氢。
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公开(公告)号：US4670609A
公开(公告)日：1987-06-02
申请号：US427972
申请日：1982-09-29
IPC分类号： C07C27/00 , C07C37/08 , C07C37/72 , C07C39/08 , C07C67/00 , C07C409/08 , C07C409/12
CPC分类号： C07C409/08 , C07C37/72 , C07C407/00 , C07C407/003 , C07C409/12
摘要： An improved process for the manufacture of a dihydric phenol such as hydroquinone wherein a dialkylbenzene is oxidized to a dihydroperoxide, the dihydroperoxide being extracted from the oxidate by a caustic solution, leaving an organic phase for recycle to the oxidizer, the improvement comprising decreasing the caustic concentration in the recycle organic phase and increasing the dihydroperoxide concentration of the recycle phase by washing the organic phase from the caustic extract with an aqueous phase removed from the oxidizer, separating the organic phase from the aqueous phase and subsequently introducing the organic phase to the oxidizer.
摘要翻译： 用于制造二氢苯酚（例如氢醌）的改进方法，其中二烷基苯被氧化成二氢过氧化物，二氢过氧化物由苛性碱溶液从氧化物中提取，留下有机相再循环到氧化剂中，改进包括降低苛性碱 浓缩在循环有机相中，并且通过从氧化剂中除去水相从碱萃取物中洗涤有机相，并从水相中分离有机相，随后将有机相引入到氧化剂中，从而提高循环相的二氢过氧化物浓度 。
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公开(公告)号：USH2041H1
公开(公告)日：2002-08-06
申请号：US08847295
申请日：1997-04-24
IPC分类号： B32B302
摘要： Aqueous liquids, such as water, can normally penetrate through conventional carpet. Thus, in cases where water is spilled on conventional carpet, it typically seeps through and ultimately reaches the flooring below. This trapped water can lead to bacterial or fungal growth which can further cause odors and/or deterioration of the carpet backing or flooring. This invention relates to a technique for treating carpet to render it impervious to aqueous liquids. This invention specifically discloses a process for treating carpet which is comprised of a pile and a backing to render said carpet impervious to aqueous liquids, said process comprising the steps of (1) coating the bottom side of said backing with a water-resistant coating composition which is comprised of (i) a latex of a polymer which is comprised of repeat units which are derived from (a) about 30 weight percent to about 84 weight percent vinyl aromatic moochers, (b) about 15 weight percent to about 65 weight percent alkyl acrylate moochers and (c) about 1 weight percent to about 6 weight percent unsaturated carbonyl group containing moochers, (ii) a coalescing solvent and (iii) a thickener; and (2) allowing the water-resistant coating composition to dry on the bottom side of said backing to produce the treated carpet which is impervious to aqueous liquids.
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公开(公告)号：US5652304A
公开(公告)日：1997-07-29
申请号：US663803
申请日：1996-06-28
IPC分类号： B01J8/10 , B01J8/24 , B01J8/36 , C08F2/06 , C08F2/34 , C08F4/64 , C08F4/70 , C08F36/04 , C08F136/04 , C08F136/06 , C08F136/08 , G09F13/28 , G09F21/06
CPC分类号： B01J8/1827 , B01J8/10 , B01J8/24 , B01J8/36 , C08F136/04 , C08F136/06 , C08F136/08 , C08F36/04 , G09F13/28 , G09F21/06 , B01J2208/00256 , B01J2208/00274 , B01J2219/00108 , B01J2219/182 , Y10S526/901 , Y10S526/903
摘要： By utilizing the vapor phase polymerization techniques of the present invention, numerous distinct and highly beneficial advantages are realized. For instance, cis-1,4-polyisoprene rubber and high cis-1,4-polybutadiene rubber having a consistent and controllable molecular weight can be easily and practically prepared without utilizing a solvent. The subject invention more specifically discloses a method for vapor phase polymerizing isoprene into cis-1,4-polyisoprene in a process comprising the steps of:(1) charging into a reaction zone said isoprene and a preformed catalyst system which is made by reacting an organoaluminum compound with titanium tetrachloride, preferably in the presence of at least one ether; wherein the isoprene is maintained in the vapor phase in said reaction zone by a suitable combination of temperature and pressure;(2) allowing said isoprene to polymerize into cis-1,4-polyisoprene at a temperature within the range of about 35.degree. C. to about 70.degree. C.; and(3) withdrawing said cis-1,4-polyisoprene from said reaction zone. It has been determined that gel formation can be reduced by conducting the polymerization of isoprene monomer in the presence of a diarylamine, such as para-styrenated diphenylamine.
摘要翻译： 通过利用本发明的气相聚合技术，实现了许多显着和非常有益的优点。 例如，具有一致和可控分子量的顺式-1,4-聚异戊二烯橡胶和高顺式-1,4-聚丁二烯橡胶可以在不使用溶剂的情况下容易且实际地制备。 本发明更具体地公开了一种将异戊二烯气相聚合成顺式-1,4-聚异戊二烯的方法，包括以下步骤：（1）将反应区中的所述异戊二烯和预制的催化剂体系装入反应区， 有机铝化合物与四氯化钛，优选在至少一种醚存在下进行; 其中所述异戊二烯通过温度和压力的适当组合保持在所述反应区中的气相中; （2）允许所述异戊二烯在约35℃至约70℃的温度范围内聚合成顺式-1,4-聚异戊二烯; 和（3）从所述反应区中取出所述顺式-1,4-聚异戊二烯。 已经确定通过在二芳基胺如对苯二甲酸二苯胺存在下进行异戊二烯单体的聚合可以降低凝胶形成。
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5.发明授权
公开(公告)号：US4538002A
公开(公告)日：1985-08-27
申请号：US649231
申请日：1984-09-10
IPC分类号： B01J23/00 , C07B61/00 , C07C27/00 , C07C37/00 , C07C39/19 , C07C41/00 , C07C41/16 , C07C41/26 , C07C41/30 , C07C43/23 , C07C67/00 , C07C41/18
CPC分类号： C07C41/30 , C07C37/001 , C07C41/16 , C07C41/26 , C07C43/23
摘要： There is disclosed a process for the production of alkylated hydroxyanisoles which consists of dehydrogenating para-isopropylphenol to para-isopropenylphenol which is then reacted with a methylating agent to yield para-isopropenylanisole which is then treated with acidic hydrogen peroxide to yield para-hydroxyanisole which is then treated with an alkylating agent to yield the alkylated hydroxyanisole. The process of this invention is especially useful for the synthesis of the food preservative butylated hydroxyanisole (BHA).
摘要翻译： 公开了一种生产烷基化羟基苯甲醚的方法，其由对异丙基苯酚脱氢为对异丙烯基苯酚，然后与甲基化剂反应产生对 - 异丙烯基苯甲醚，然后用酸性过氧化氢处理，得到对羟基苯甲醚， 然后用烷基化剂处理得到烷基化羟基苯甲醚。 本发明的方法对于食品防腐剂丁基化羟基苯甲醚（BHA）的合成特别有用。
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6.发明授权Method for the rearrangement of dialkylbenzene dihydroperoxides to dihydric phenols 失效将二烷基苯二氢过氧化物重排为二元酚的方法
公开(公告)号：US4463198A
公开(公告)日：1984-07-31
申请号：US410613
申请日：1982-08-23
摘要： An improved method for the acid-catalyzed rearrangement of a dialkylbenzene dihydroperoxide to a dihydric phenol which eliminates the formation of an emulsion during the subsequent separation and recovery of the dihydric phenol in a process which utilizes water, the method comprising the addition of the acid as a solution in a water soluble organic solvent, preferably a ketone, which is non-reactive with the acid.
摘要翻译： 一种改进的二烷基苯二氢过氧化物重整为二元酚的方法，其消除了在利用水的方法中二元酚随后的分离和回收期间形成乳液，该方法包括将酸添加为 水溶性有机溶剂中的溶液，优选酮，其与酸不反应。
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公开(公告)号：US08048919B2
公开(公告)日：2011-11-01
申请号：US11131278
申请日：2005-05-17
申请人： Joel Muse, Jr. , Howard A. Colvin
发明人： Joel Muse, Jr. , Howard A. Colvin
摘要： This invention is based upon the unexpected discovery that ethyl lactate can be used as an emulsifying/dispersing excipient for numerous biologically active compounds without destroying the pharmacological activity of the active ingredient. Ethyl lactate proves to be an extremely effective agent for solubilizing biologically active compounds that are difficult to solubilize in conventional excipients. The operability of this invention is predicated on the necessity for the ethyl lactate to be essentially free of peroxide compounds. Such pharmaceutical grade ethyl lactate can be made by reducing the level of peroxide compounds in high purity ethyl lactate by hydrogenation, reduction with a non-catalytic chemical reducing agent, absorption into activated carbon or alumina, or distillation. In any case, it has been determined to be critical for the level of peroxide compounds to be reduced to less than 10 ppm for the pharmaceutical grade ethyl lactate to be viable as an excipient for many biologically active ingredients. The present invention more specifically discloses a pharmaceutical composition which is comprised of a biologically active ingredient wherein said biologically active ingredient is dispersed in ethyl lactate and wherein said ethyl lactate contains no more than 10 ppm of peroxidic materials and maintains a Gardner 1 color rating throughout its shelf-life period.
摘要翻译： 本发明基于意想不到的发现，乳酸乙酯可用作许多生物活性化合物的乳化/分散赋形剂，而不破坏活性成分的药理活性。 乳酸乙酯被证明是增溶难溶于常规赋形剂的生物活性化合物的非常有效的药剂。 本发明的可操作性取决于乳酸乙酯基本上不含过氧化物的必要性。 这样的药物级乳酸乙酯可以通过氢化，通过非催化化学还原剂还原，活性炭或氧化铝的吸收或蒸馏来降低高纯度乳酸乙酯中的过氧化物化合物的水平来制备。 在任何情况下，已经确定，对于药物级乳酸乙酯作为许多生物活性成分的赋形剂而言，将过氧化物化合物的水平降低至小于10ppm是至关重要的。 本发明更具体地公开了一种药物组合物，其由生物活性成分组成，其中所述生物活性成分分散在乳酸乙酯中，并且其中所述乳酸乙酯含有不超过10ppm的过氧化物质，并且在其整个过程中保持加德纳1的颜色等级 保质期。
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公开(公告)号：US5859156A
公开(公告)日：1999-01-12
申请号：US990251
申请日：1997-12-15
IPC分类号： B01J8/10 , B01J8/24 , B01J8/36 , C08F2/34 , C08F36/04 , C08F136/04 , C08F136/06 , C08F136/08
CPC分类号： B01J8/1827 , B01J8/10 , B01J8/24 , B01J8/36 , C08F136/04 , C08F136/06 , C08F136/08 , C08F36/04 , B01J2208/00256 , B01J2208/00274 , B01J2219/00108 , B01J2219/182 , Y10S526/901 , Y10S526/903
摘要： By utilizing the vapor phase polymerization techniques of the present invention, numerous distinct and highly beneficial advantages are realized. For instance, cis-1,4-polyisoprene rubber and high cis-1,4-polybutadiene rubber having a consistent and controllable molecular weight can be easily and practically prepared without utilizing a solvent. The subject invention more specifically discloses a method for vapor phase polymerizing isoprene into cis-1,4-polyisoprene in a process comprising the steps of:(1) charging into a reaction zone said isoprene and a preformed catalyst system which is made by reacting an organoaluminum compound with titanium tetrachloride, preferably in the presence of at least one ether; wherein the isoprene is maintained in the vapor phase in said reaction zone by a suitable combination of temperature and pressure;(2) allowing said isoprene to polymerize into cis-1,4-polyisoprene in said reaction zone at a temperature within the range of about 0.degree. C. to about 100.degree. C. in the presence of a diarylamine, wherein said reaction zone is a horizontal, stirred reactor of substantially circular cross section containing a centrally-located drive shaft extending longitudinally through said reactor to which are attached a plurality of adjacently located paddles, which paddles cause essentially no forward or backward movement of the cis-1,4-polyisoprene contained in said reactor; and(3) withdrawing said cis-1,4-polyisoprene from said reaction zone.
摘要翻译： 通过利用本发明的气相聚合技术，实现了许多显着和非常有益的优点。 例如，具有一致和可控分子量的顺式-1,4-聚异戊二烯橡胶和高顺式-1,4-聚丁二烯橡胶可以在不使用溶剂的情况下容易且实际地制备。 本发明更具体地公开了一种将异戊二烯气相聚合成顺式-1,4-聚异戊二烯的方法，包括以下步骤：（1）将反应区中的所述异戊二烯和预制的催化剂体系装入反应区， 有机铝化合物与四氯化钛，优选在至少一种醚存在下进行; 其中所述异戊二烯通过温度和压力的适当组合保持在所述反应区中的气相中; （2）在二芳基胺的存在下，使所述异戊二烯在所述反应区中在约0℃至约100℃的温度范围内聚合成顺式-1,4-聚异戊二烯，其中所述反应区为 一个基本圆形横截面的水平搅拌的反应器，其包含一个中心定位的驱动轴，其纵向延伸穿过所述反应器，所述反应器附接有多个相邻的桨叶，该桨叶基本上不引起顺式-1,4- 所述反应器中含有的聚异戊二烯; 和（3）从所述反应区中取出所述顺式-1,4-聚异戊二烯。
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公开(公告)号：US4855362A
公开(公告)日：1989-08-08
申请号：US138422
申请日：1987-12-28
申请人： Joel Muse, Jr. , Howard A. Colvin
发明人： Joel Muse, Jr. , Howard A. Colvin
摘要： The present invention reveals a polymer alloy which is comprised of (a) at least one highly unsaturated rubbery polymer which is covulcanized with at least one N-chlorothio-sulfonamide modified EPDM rubber and (b) at least one thermoplastic resin. A blend of polypropylene with nitrile rubber which has been cocured with an N-chlorothio-sulfonamide modified EPDM rubber is a representative example of such a polymer alloy.
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公开(公告)号：US4390741A
公开(公告)日：1983-06-28
申请号：US414706
申请日：1982-09-03
申请人： Howard A. Colvin , Joel Muse, Jr.
发明人： Howard A. Colvin , Joel Muse, Jr.
IPC分类号： C07C5/333 , B01J23/00 , B01J23/46 , C07B61/00 , C07C1/00 , C07C7/04 , C07C7/14 , C07C7/163 , C07C15/44 , C07C67/00
CPC分类号： C07C7/163
摘要： This invention discloses a process for the separation of diisopropenylbenzene from organic impurities in a dehydrogenation mixture comprising: (1) hydrogenating said dehydrogenation mixture to a maximum isopropenylstyrene concentration of no more than about 5% by weight in the presence of a rhodium catalyst and hydrogen to form a hydrogenated dehydrogenation mixture, followed by, (2) fractionally distilling said hydrogenated dehydrogenation mixture under conditions sufficient to separate said diisopropenylbenzene from said organic impurities in said hydrogenated dehydrogenation mixture.
摘要翻译： 本发明公开了一种在脱氢混合物中从有机杂质中分离二异丙烯基苯的方法，包括：（1）在铑催化剂和氢存在下将所述脱氢混合物氢化至最大异丙烯基苯乙烯浓度不超过约5重量％，至 形成氢化脱氢混合物，随后，（2）在足以从所述氢化脱氢混合物中分离所述二异丙烯基苯与所述有机杂质的条件下分馏所述氢化脱氢混合物。
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