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51. 发明授权

US5071930A Butadiene monoepoxide/maleic anhydride copolymers 失效
公开(公告)号：US5071930A
公开(公告)日：1991-12-10
申请号：US680455
申请日：1991-04-04
申请人： Richard W. Blevins , S. Richard Turner
发明人： Richard W. Blevins , S. Richard Turner
IPC分类号： C08F222/06
CPC分类号： C08F222/06
摘要： Copolymers are produced when 3,4-epoxy-1-butene (EpB) is copolymerized with maleic anhydride. The copolymerization is initiated by free radicals, and comprises both 1,2-propagation and 1,5-propagation of EpB. When an ether is used as the reaction solvent, the product is soluble, and essentially composed of (a) a monomer derived from maleic anhydride, and (b) two monomers derived from EpB. When the reaction solvent is a ketone, the polymer product is also soluble, and additionally contains (c) a moiety derived from a dioxolane formed in situ. When the reaction is conducted in the presence of a non polar (e.g., hydrocarbon or a halocarbon) solvent, or neat (i.e., in the absence of a solvent), the polymer product is insoluble in common organic solvents and contains (d) a symmetrical EpB dimer. This dimer apparently does not form, or is formed to only a very slight extent, when the polymerization is conducted in polar reaction solvents.Polymer products with a dioxolane moiety can be made by using preformed dioxolane in the polymerization mixture. Thus, this invention is not limited to in situ preparation of the dioxolane from a reaction mixture containing a ketone.Products of this invention can be cast as clear films and can also be used as reactive polymers.

52. 发明授权

US4933419A Preparation of polyesters by a condensation reaction between aryl diodide and an alkyl or aryl diol 失效
标题翻译：通过芳基二碘化物和烷基或芳基二醇之间的缩合反应制备聚酯
公开(公告)号：US4933419A
公开(公告)日：1990-06-12
申请号：US366076
申请日：1989-06-14
申请人： Perry Robert J. , S. Richard Turner
发明人： Perry Robert J. , S. Richard Turner
IPC分类号： C08G63/00 , C08G63/40
CPC分类号： C08G63/40 , C08G63/00
摘要： Polyesters are prepared by a condensation reaction between an aryl diodide and an alkyl or aryl diol. The process is conducted in the presence of carbon monoxide, a palladium catalyst, a base to react with by-product hydrogen iodide, and a solvent.
摘要翻译：聚酯通过芳基二碘化物和烷基或芳基二醇之间的缩合反应制备。该方法在一氧化碳，钯催化剂，与副产物碘化氢反应的碱和溶剂的存在下进行。

53. 发明授权

US4478727A Sodium styrene sulfonate-co-sodium-n-(4-sulfophenyl)-maleimide- an improved viscosity control additive 失效
标题翻译：苯乙烯磺酸钠 - 共 - 正 - （4-磺基苯基） - 马来酰亚胺 - 改进的粘度控制添加剂
公开(公告)号：US4478727A
公开(公告)日：1984-10-23
申请号：US416939
申请日：1982-09-13
申请人： S. Richard Turner , Thad O. Walker , Warren A. Thaler
发明人： S. Richard Turner , Thad O. Walker , Warren A. Thaler
IPC分类号： C09K8/24 , C09K7/02
CPC分类号： C09K8/24
摘要： A new copolymer of sodium styrene sulfonate-co-sodium-N-(4-sulfophenyl)-maleimidehas been found to be an improved viscosity control additive for water-based drilling muds.
摘要翻译：已经发现苯乙烯磺酸钠 - 共 - 钠-N-（4-磺基苯基）马来酰亚胺的新共聚物是用于水基钻井泥浆的改进的粘度控制添加剂。

54. 发明授权

US4233384A Imaging system using novel charge transport layer 失效
标题翻译：使用新型电荷传输层的成像系统
公开(公告)号：US4233384A
公开(公告)日：1980-11-11
申请号：US34817
申请日：1979-04-30
申请人： S. Richard Turner , John F. Yanus , Damodar M. Pai
发明人： S. Richard Turner , John F. Yanus , Damodar M. Pai
IPC分类号： G03G5/05 , C07C13/66 , G03G5/06 , G03G5/08 , G03G5/04
CPC分类号： G03G5/0614 , C07C13/66 , C09B57/001
摘要： A photosensitive member having at least two electrically operative layers is disclosed. The first layer comprises a photoconductive layer which is capable of photogenerating holes and injecting photogenerated holes into a contiguous charge transport layer. The charge transport layer comprises a polycarbonate resin containing from about 25 to about 75 percent by weight of one or more of a compound having the general formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are selected from the group consisting of hydrogen, an ortho, meta or para alkyl group having from 1 to about 4 carbon atoms, an ortho, meta or para halogen atom, a para phenyl group and combinations thereof.
摘要翻译：公开了具有至少两个电操作层的感光构件。第一层包括光电导层，其能够对空穴进行光生并将光生空穴注入连续的电荷传输层。电荷输送层包含含有约25至约75重量％的一种或多种具有以下通式的化合物的聚碳酸酯树脂：其中R1，R2，R3和R4选自氢，具有1至约4个碳原子的邻位，间位或对位烷基，邻位，间位或对位卤原子，对苯基及其组合。

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