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51. 发明授权

US5250635A Polycarbonate composition with reduced drip rate on burning 失效
标题翻译：聚碳酸酯组合物燃烧时滴落速度降低
公开(公告)号：US5250635A
公开(公告)日：1993-10-05
申请号：US914816
申请日：1992-07-15
申请人： Douglas G. Powell , Sivaram Krishnan
发明人： Douglas G. Powell , Sivaram Krishnan
IPC分类号： C08G73/06 , C08K5/205 , C08L69/00 , C08K5/16
CPC分类号： C08G73/0655 , C08K5/205
摘要： A molding composition containing a blend of polycarbonate resin and a small amount of an aromatic dicyanate ester is disclosed. In comparison to the performance of the unmodified polycarbonate resin, the transparent composition of the invention exhibits a significantly reduced dripping rate upon burning. The composition is suitable for the preparation of thermoplastically molded articles.
摘要翻译：公开了一种含有聚碳酸酯树脂和少量芳族二氰酸酯的共混物的模塑组合物。与未改性的聚碳酸酯树脂的性能相比，本发明的透明组合物在燃烧时表现出显着降低的滴落速率。该组合物适用于热塑性模塑制品的制备。

52. 发明授权

US5025056A Thermoplastic compositions having improved melt flow 失效
标题翻译：具有改善熔体流动性的热塑性组合物
公开(公告)号：US5025056A
公开(公告)日：1991-06-18
申请号：US568568
申请日：1990-08-16
申请人： Steven A. Jorissen , Charles E. Lundy , Sivaram Krishnan , Robson Mafoti , Robert A. Pyles
发明人： Steven A. Jorissen , Charles E. Lundy , Sivaram Krishnan , Robson Mafoti , Robert A. Pyles
IPC分类号： C08L67/00 , C08L69/00
CPC分类号： C08L69/00 , C08L69/005
摘要： Thermoplastic molding compositions containing at least one member selected from among aromatic polycarbonate and aromatic polyestercarbonate resins were plasticized by incorporating therewith a small amount of a copolyetherester conforming to ##STR1## wherein x is about 2 to 15, n is about 3 to 10 and y is about 1 to 10. A and A' are end groups which may independently be a hydroxy group, a carboxy radical, a C.sub.1 -C.sub.8 alkoxy or a C.sub.6 -050249762 C.sub.10 aryloxy group. The compositions of the invention are characterized by their improved processability.

53. 发明授权

US5001180A Release agents for polycarbonate molding compositions 失效
标题翻译：聚碳酸酯模塑组合物的脱模剂
公开(公告)号：US5001180A
公开(公告)日：1991-03-19
申请号：US430698
申请日：1989-11-01
申请人： Charles E. Lundy , Sivaram Krishnan , Donald K. Booher
发明人： Charles E. Lundy , Sivaram Krishnan , Donald K. Booher
IPC分类号： C08K5/101
CPC分类号： C08K5/101
摘要： A monoester derived from guerbet alcohol and a monocarboxylic acid or a hydroxy carboxylic acid was found to be an effective mold release agent for a thermoplastic molding composition which comprise an aromatic polycarbonate resin. The alcohol of the invention is a guerbet alcohol having about 20 to 60 carbon atoms and the monoacid is characterized in that it has about 1 to 22 carbon atoms.
摘要翻译：发现衍生自格尔伯特醇和单羧酸或羟基羧酸的单酯是包含芳族聚碳酸酯树脂的热塑性模塑组合物的有效脱模剂。本发明的醇是具有约20至60个碳原子的格尔伯特醇，单酸的特征在于其具有约1至22个碳原子。

54. 发明授权

US4880864A Thermoplastic polycarbonates and blends with enhanced flame retardant properties 失效
标题翻译：热塑性聚碳酸酯和具有增强的阻燃性能的共混物
公开(公告)号：US4880864A
公开(公告)日：1989-11-14
申请号：US138982
申请日：1987-12-29
申请人： Winfried G. Paul , Ronald L. Price , Sivaram Krishnan
发明人： Winfried G. Paul , Ronald L. Price , Sivaram Krishnan
IPC分类号： C08L69/00 , C08G81/00 , C08K3/00 , C08K3/16 , C08K3/24 , C08K3/26 , C08L83/04 , C08L83/10
CPC分类号： C08K3/24 , C08K3/16 , C08K3/26
摘要： It has now been found that the flame retardance of polydiorganosiloxane copolycarbonates may be significantly improved upon the addition thereto of a small amount of a metal salt of an inorganic acid. The polydiorganosiloxane copolycarbonates are conforming structurally to ##STR1## wherein p is an integer of from 1 to about 10,n is an integer of from 1 to about 1000,m is an integer of from 1 to about 500,A is a derivative of an aromatic dihydroxy compound,R and R' independently denote a C.sub.1 -C.sub.20 alkyl radical or a C.sub.6 -C.sub.14 aryl radical,which copolymer is characterized in that its relative viscosity measured on a solution of 0.5 g in 100 ml of dichloromethane at 25.degree. C. is at least 1.15.

55. 发明授权

US4874802A Polycarbonate compositions resistant to gamma radiation 失效
标题翻译：耐γ辐射的聚碳酸酯组合物
公开(公告)号：US4874802A
公开(公告)日：1989-10-17
申请号：US207601
申请日：1988-06-16
申请人： Charles E. Lundy , Sivaram Krishnan , Gerard E. Reinert
发明人： Charles E. Lundy , Sivaram Krishnan , Gerard E. Reinert
IPC分类号： A61L2/10 , C08K5/06 , C08K5/20 , C08K5/3412 , C08K5/3417 , C08L69/00
CPC分类号： C08K5/3412 , C08K5/06 , C08K5/20 , C08K5/3417
摘要： The invention relates to thermoplastic polycarbonate molding compositions comprising a polycarbonate resin and a stabilizing agent conforming to ##STR1## where R.sub.1 and R.sub.2 independently are ##STR2## R.sub.3 is a hydrogen atom, a branched or linear C.sub.1 -C.sub.20 alkyl or a C.sub.1 -C.sub.20 cycloalkyl, and R.sub.5 and R.sub.6 independently are a hydrogen atom or a C.sub.1 -C.sub.3 alkyl, x is an integer of about 1 to 70,y is an integer of about 0 to 70,R.sub.4 is C.sub.2 -C.sub.6 alkyl or cycloalkyl, C.sub.6 -C.sub.10 aryl or C.sub.7 -C.sub.20 alkylaryl or cycloalkylaryl. The agent is homogenically distributed throughout the resin and is present in an amount sufficient to improve the gamma radiation resistance of the composition.

56. 发明授权

US4851453A Foamable molding compositions 失效
标题翻译：可发泡成型组合物
公开(公告)号：US4851453A
公开(公告)日：1989-07-25
申请号：US305826
申请日：1989-02-02
申请人： Roger J. White , Sivaram Krishnan
发明人： Roger J. White , Sivaram Krishnan
IPC分类号： C08J9/10
CPC分类号： C08J9/104
摘要： A Chemical Blowing Agent (CBA) concentrate was developed comprising a modifying agent and a chemical blowing agent. The CBA is characterized in that its decomposition products contain a primary amine. The modifying agent is a blend of a maleic anhydride copolymer and a butadiene based rubber. It was surprisingly found that resin degradation which often accompanies foam moldings using a CBA of the present type and is expressed in terms of a reduction in the molecular weight of the resin, is much reduced upon the incorporation of the modifying agent and chemical blowing agent of the invention. The concentrate may optionally further comprise a polymeric resin component.
摘要翻译：开发了包含改性剂和化学发泡剂的化学发泡剂（CBA）浓缩物。 CBA的特征在于其分解产物含有伯胺。改性剂是马来酸酐共聚物和丁二烯基橡胶的共混物。令人惊奇地发现，通常伴随着使用本发明的CBA的泡沫塑料成型并且根据树脂的分子量的降低表示的树脂降解，在引入改性剂和化学发泡剂本发明。浓缩物可以任选地进一步包含聚合树脂组分。

57. 发明授权

US4816504A Stabilized polycarbonates 失效
标题翻译：稳定的聚碳酸酯
公开(公告)号：US4816504A
公开(公告)日：1989-03-28
申请号：US107811
申请日：1987-10-13
申请人： John V. Bailey , Sivaram Krishnan
发明人： John V. Bailey , Sivaram Krishnan
IPC分类号： C08K5/3475 , C08K5/34 , G02C1/00
CPC分类号： C08K5/3475
摘要： Polycarbonate compositions comprising a small amount of a certain halogenobenzotriazole were found to be particularly suitable for optical purposes since they feature a desirable high UV-cutoff and since they are processable at high temperatures.
摘要翻译：发现包含少量某些卤代苯并三唑的聚碳酸酯组合物特别适用于光学目的，因为它们具有期望的高UV截止值，并且因为它们在高温下是可加工的。

58. 发明授权

US4737523A Foamable molding compositions 失效
标题翻译：可发泡成型组合物
公开(公告)号：US4737523A
公开(公告)日：1988-04-12
申请号：US64168
申请日：1987-06-19
申请人： Roger J. White , Sivaram Krishnan , Wolfgang J. Siebourg
发明人： Roger J. White , Sivaram Krishnan , Wolfgang J. Siebourg
IPC分类号： C08J9/00 , C08J9/10 , C08J9/06
CPC分类号： C08J9/0061 , C08J9/104 , C08J2367/02 , C08J2369/00
摘要： Foamable, thermoplastic molding composition exhibiting an improved level of impact resistance is provided. The composition, which is suitable for the preparation of expanded molded parts, comprise a thermoplastic resin, preferably at least one selected from a group consisting of polycarbonate, polyalkylene terephthalate, aromatic polyester and polyester carbonate, a nucleating agent, a chemical blowing agent and an anhydride. It was unexpectedly found that the composition is suitable for the molding of articles having an improved level of impact resistance.
摘要翻译：提供了具有改进的抗冲击性水平的可发泡热塑性模塑组合物。适用于制备发泡成型部件的组合物包括热塑性树脂，优选选自聚碳酸酯，聚对苯二甲酸亚烷基酯，芳族聚酯和聚酯碳酸酯，成核剂，化学发泡剂和酐。意外地发现该组合物适合于具有改善的耐冲击性水平的制品的模制。

59. 发明授权

US4594375A Bis-(imide-sulfonate) flameproofing agents, their preparation and their use for flameproofing in polycarbonate 失效
标题翻译：双（酰亚胺磺酸）防火剂，它们的制备及其在聚碳酸酯中的防火用途
公开(公告)号：US4594375A
公开(公告)日：1986-06-10
申请号：US617198
申请日：1984-06-04
申请人： Sivaram Krishnan , Klaus Kircher , Hans-Jurgen Kress
发明人： Sivaram Krishnan , Klaus Kircher , Hans-Jurgen Kress
IPC分类号： C07D487/04 , C08K5/36 , C08K5/42 , C08L69/00 , C08K5/16
CPC分类号： C07D487/04 , C08K5/42
摘要： The present invention relates to novel bis-(imide-sulphonates) of the formula (I), a process for their preparation, their use for flameproofing aromatic, thermoplastic polycarbonates obtained from halogen-free diphenols, and thermoplastic aromatic polycarbonates obtained from halogen-free diphenols and containing 0.01 to 1% by weight, of bis-(imide-sulphonate) of the formula (I), based on an aromatic, thermoplastic polycarbonate.
摘要翻译：本发明涉及式（I）的新型双 - （酰亚胺 - 磺酸酯），其制备方法，其用于由无卤素二酚获得的芳族，热塑性聚碳酸酯的灭火剂和由无卤素获得的热塑性芳族聚碳酸酯二元酚，并且基于芳族热塑性聚碳酸酯，含有0.01至1重量％的式（I）的双（（酰亚胺 - 磺酸酯））。

60. 发明授权

US4539384A Polymers prepared from 4,4'-bis(4-hydroxyphenyl thio)biphenyls 失效
标题翻译：由4,4'-双（4-羟苯基硫代）联苯制备的聚合物
公开(公告)号：US4539384A
公开(公告)日：1985-09-03
申请号：US607554
申请日：1984-05-07
申请人： Sivaram Krishnan , John R. Sanderson
发明人： Sivaram Krishnan , John R. Sanderson
IPC分类号： C07C17/12 , C08G18/28 , C08G63/66 , C08G64/08 , C08G63/68 , C08G65/40
CPC分类号： C08G64/081 , C07C17/12 , C07C323/00
摘要： The present invention relates to the novel monomer 4,4'-bis(4-hydroxyphenyl thio)biphenyl, to a process for its production and to its use in the preparation of polycarbonates, polyurethanes, polyesters, polysulfones and polyethers.
摘要翻译：本发明涉及新型单体4,4'-双（4-羟基苯基硫代）联苯，涉及其制备方法及其在制备聚碳酸酯，聚氨酯，聚酯，聚砜和聚醚中的用途。

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