专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

41. 发明授权

US5064867A Production of foamed polymer structures 失效
标题翻译：泡沫聚合物结构的生产
公开(公告)号：US5064867A
公开(公告)日：1991-11-12
申请号：US466096
申请日：1990-04-05
申请人： James R. Barringer , H. Eugene Broemmelsiek , Porter W. Gregory , Carroll W. Lanier , Raymond Lee , Harold E. Schulz
发明人： James R. Barringer , H. Eugene Broemmelsiek , Porter W. Gregory , Carroll W. Lanier , Raymond Lee , Harold E. Schulz
IPC分类号： B29C35/08 , C08J9/00
CPC分类号： C08J9/00 , B29C35/08 , B29C2035/0855 , B29K2105/04 , C08J2379/08
摘要： Described are ways of improving the yields of specification grade polyimide foam on a consistent basis from one run to the next, by use of improved microwave-based foaming processes. In one such process, prior to the application of the microwave radiation, the body of polyimide precursor is compressed at a pressure that will reduce the bulk volume of the precursor and heated to a temperature below that at which any substantial foaming occurs. to accomplish the foaming, one further embodiment of the invention employs microwave radiation directed upon the top, sides and ends of the body of above-treated polyimide precursor and of the foam structure as it is developing maintaining the developing foam under a substantially vapor-impermeable microwave compatible shroud. The extent to which the microwave radiation impinges upwardly into the bottom of said body and said foam structure is curtailed, preferably by means of a metallic shield located below the precursor and developing foam structure.
摘要翻译：通过使用改进的基于微波的发泡方法，描述了通过一次运行到下一个步骤来提高规格级聚酰亚胺泡沫的产率的方法。在一个这样的方法中，在施加微波辐射之前，聚酰亚胺前体的体积被压缩，其压力将降低前体的体积，并加热至低于发生任何实际发泡的温度。为了实现发泡，本发明的另一个实施方案使用微波辐射，其指向上述处理的聚酰亚胺前体和泡沫结构体的顶部，侧面和端部，因为其在显影下保持显影泡沫基本上不透气微波兼容护罩。微波辐射向上撞击到所述主体和所述泡沫结构的底部的程度优选地通过位于前体和显影泡沫结构下方的金属屏蔽被限制。

42. 发明授权

US4900762A Production of foamed polymer structures 失效
标题翻译：泡沫聚合物结构的生产
公开(公告)号：US4900762A
公开(公告)日：1990-02-13
申请号：US255264
申请日：1988-10-11
申请人： H. Eugene Broemmelsiek , Raymond Lee , Carroll W. Lanier
发明人： H. Eugene Broemmelsiek , Raymond Lee , Carroll W. Lanier
IPC分类号： B01J19/12 , C08J9/00
CPC分类号： C08J9/00 , B01J19/126 , C08J2379/08 , Y10S521/915
摘要： Described are ways of improving the yields of specification grade polyimide foam on a consistent basis from one run to the next, by use of improved microwave-based foaming processes. In one such process, the microwave radiation is directed upon the top, sides and ends of the body of polyimide precursor and of the foam structure as it is developing, but the extent to which such radiation impinges upwardly into the bottom of said body and said foam structure is curtailed, preferably by means of a metallic shield located below the precursor and developing foam structure. Mechanisms by which the shields function to provide the improvements of the process are discussed, and methods based thereon are set forth.
摘要翻译：通过使用改进的基于微波的发泡方法，描述了通过一次运行到下一个步骤来提高规格级聚酰亚胺泡沫的产率的方法。在一个这样的过程中，微波辐射被引导到聚酰亚胺前体和泡沫结构体的顶部，侧面和端部，因为它正在显影，但是这种辐射向上侵入所述主体的底部的程度和所述的泡沫结构被减少，优选地通过位于前体和显影泡沫结构下面的金属屏蔽。讨论了屏蔽功能提供过程改进的机制，并阐述了基于此的方法。

43. 发明授权

US4877563A Production of foamed polymer structures 失效
标题翻译：泡沫聚合物结构的生产
公开(公告)号：US4877563A
公开(公告)日：1989-10-31
申请号：US251797
申请日：1988-10-03
申请人： H. Eugene Broemmelsiek , Raymond Lee , Carroll W. Lanier
发明人： H. Eugene Broemmelsiek , Raymond Lee , Carroll W. Lanier
IPC分类号： B01J19/12 , C08J9/00
CPC分类号： C08J9/00 , B01J19/126 , C08J2379/08 , Y10S521/915
摘要： Described are ways of improving the yields of specification grade polyimide foam on a consistent basis from one run to the next, by use of improved microwave-based foaming processes. In one such process, the microwave radiation is directed upon the top, sides and ends of the body of polyimide precursor and of the foam structure as it is developing, but the extent to which such radiation impinges upwardly into the bottom of said body and said foam structure is curtailed, preferably by means of a metallic shield located below the precursor and developing foam structure. Mechanisms by which the shields function to provide the improvements of the process are discussed, and methods based thereon are set forth.
摘要翻译：通过使用改进的基于微波的发泡方法，描述了通过一次运行到下一个步骤来提高规格级聚酰亚胺泡沫的产率的方法。在一个这样的过程中，微波辐射被引导到聚酰亚胺前体和泡沫结构体的顶部，侧面和端部，因为它正在显影，但是这种辐射向上侵入所述主体的底部的程度和所述的泡沫结构被减少，优选地通过位于前体和显影泡沫结构下面的金属屏蔽。讨论了屏蔽功能提供过程改进的机制，并阐述了基于此的方法。

44. 发明授权

US4822537A Production of foamed polymer structures 失效
标题翻译：泡沫聚合物结构的生产
公开(公告)号：US4822537A
公开(公告)日：1989-04-18
申请号：US209018
申请日：1988-06-20
申请人： Carroll W. Lanier , H. Eugene Broemmelsiek , Raymond Lee
发明人： Carroll W. Lanier , H. Eugene Broemmelsiek , Raymond Lee
IPC分类号： B29C33/06 , B29C35/08 , B29C44/34 , C08J9/00 , C08J9/04 , B29C35/12
CPC分类号： C08J9/00 , B29C35/08 , B29C44/3415 , B29C33/06 , B29K2079/00 , C08J2379/08 , Y10S264/05 , Y10S521/915
摘要： Described are ways of improving the yields of specification grade polyimide on a consistent basis from one run to the next, by use of improved microwave-based foaming processes. In one such process, during the application of the microwave radiation, the body of polyimide precursor and of the foam structure as it is developing therefrom are maintained under a substantially vapor-impermeable microwave-compatible shroud that does not substantially restrict or impede development of the foam structure; and the microwave radiation is directed upon the top, sides and ends of the body of polyimide precursor and of the foam structure as it is developing, but the extent to which such radiation impinges upwardly into the bottom of said body and said foam structure is curtailed, preferably by means of a metallic shield located below the precursor and developing foam structure. Mechanism by which the shields and shrouds function to provide the improvements of the process are discussed, and methods based thereon are set forth.
摘要翻译：描述的是通过使用改进的基于微波的发泡方法，在一个运行到下一个的一致的基础上提高了规格级聚酰亚胺的产率。在一个这样的方法中，在施加微波辐射期间，将聚酰亚胺前体和泡沫结构体从其显影的本体保持在基本上不透气的微波相容的护罩下，其基本上不会限制或阻碍泡沫结构; 并且微波辐射在聚酰亚胺前体和泡沫结构的主体的顶部，侧面和端部被引导时，它们正在显影，但是这种辐射向上侵入所述主体的底部和所述泡沫结构的程度被限制，优选地通过位于前体下方的金属屏蔽和显影泡沫结构。讨论了屏蔽罩和护罩作用于提供过程改进的机理，并阐述了基于此的方法。

45. 发明授权

US4535101A Polyimide of 2,2-bis(4-(4-aminophenoxy)phenyl)-hexafluoropropane and process for the preparation of same 失效
标题翻译： 2,2-双（4-（4-氨基苯氧基）苯基） - 六氟丙烷的聚酰亚胺及其制备方法
公开(公告)号：US4535101A
公开(公告)日：1985-08-13
申请号：US596299
申请日：1984-04-03
申请人： Raymond Lee , Usman A. K. Sorathia , Gregory A. Ferro
发明人： Raymond Lee , Usman A. K. Sorathia , Gregory A. Ferro
IPC分类号： C08G73/10 , C08J9/02
CPC分类号： C08J9/02 , C08G73/1042 , C08G73/105 , C08G73/1085 , C08J2379/08
摘要： A polyimide and a process for its preparation wherein the polyimide is prepared from reaction of an organic tetracarboxylic acid or derivative thereof with a mixture of an aromatic diamine and an amine-terminated fluoroether. The polyimides of the invention are particularly useful in the preparation of flexible foams.
摘要翻译：聚酰亚胺及其制备方法，其中聚酰亚胺由有机四羧酸或其衍生物与芳族二胺和胺封端的氟醚的混合物反应制备。本发明的聚酰亚胺在制备柔性泡沫体中特别有用。

46. 发明授权

US4369261A Polyimide foams 失效
公开(公告)号：US4369261A
公开(公告)日：1983-01-18
申请号：US327906
申请日：1981-12-07
申请人： John Gagliani , Raymond Lee , Usman A. K. Sorathia
发明人： John Gagliani , Raymond Lee , Usman A. K. Sorathia
IPC分类号： C08J3/28 , C08J9/02 , C08L79/08 , C08G69/26
CPC分类号： C08J9/02 , C08J3/28 , C08L79/08 , C08J2379/08
摘要： Copolyimide foams derived from a diester of 3,3',4,4'-benzophenonetetracarboxylic acid, an aromatic diamine, and a heterocyclic diamine. A molar concentration of the heterocyclic diamine approaching but not exceeding 0.42 is employed. This results in a flexible foam with a homogeneous cellular structure and a reduced compression set loss.

47. 发明授权

US4360604A Polyimide foams 失效
公开(公告)号：US4360604A
公开(公告)日：1982-11-23
申请号：US327929
申请日：1981-12-07
申请人： John Gagliani , Raymond Lee , Usman A. K. Sorathia
发明人： John Gagliani , Raymond Lee , Usman A. K. Sorathia
IPC分类号： C08J3/28 , C08J9/02 , C08L79/08 , C08G69/32
CPC分类号： C08J9/02 , C08J3/28 , C08L79/08 , C08J2379/08
摘要： Copolyimide foams derived from a diester of 3,3',4,4'-benzophenonetetracarboxylic acid, an aromatic diamine, and a heterocyclic diamine. A molar concentration of the heterocyclic diamine approaching but not exceeding 0.42 is employed. This results in a flexible foam with a homogeneous cellular structure and a reduced compression set loss.

48. 发明授权

US4355120A Polyimide foams 失效
标题翻译：聚酰亚胺泡沫
公开(公告)号：US4355120A
公开(公告)日：1982-10-19
申请号：US327930
申请日：1981-12-07
申请人： John Gagliani , Raymond Lee , Usman A. K. Sorathia
发明人： John Gagliani , Raymond Lee , Usman A. K. Sorathia
IPC分类号： C08J3/28 , C08J9/02 , C08L79/08 , C08G69/26
CPC分类号： C08J9/02 , C08J3/28 , C08L79/08 , C08J2379/08
摘要： Copolyimide foams derived from a diester of 3,3',4,4'-benzophenonetetracarboxylic acid, an aromatic diamine, and a heterocyclic diamine. A molar concentration of the heterocyclic diamine approaching but not exceeding 0.42 is employed. This results in a flexible foam with a homogeneous cellular structure and a reduced compression set loss.
摘要翻译：衍生自3,3'，4,4'-二苯甲酮四羧酸，芳族二胺和杂环二胺的二酯的共聚酰亚胺泡沫。使用杂化二胺的摩尔浓度接近但不超过0.42。这导致柔性泡沫具有均匀的细胞结构和降低的压缩永久变形损失。

49. 发明授权

US4346182A Polyimides 失效
标题翻译：聚酰亚胺
公开(公告)号：US4346182A
公开(公告)日：1982-08-24
申请号：US254138
申请日：1981-04-14
申请人： John Gagliani , Raymond Lee
发明人： John Gagliani , Raymond Lee
IPC分类号： C08G73/10 , C08J9/02 , C08J9/00 , C08G18/16
CPC分类号： C08J9/02 , C08G73/1007 , C08G73/1028 , C08J2379/08
摘要： Terpolyimides prepared from tetracarboxylic acid esters and combinations of heterocyclic, aromatic, and aliphatic diamines and artifacts composed of those terpolymers. Precursors, and methods of converting them to the corresponding terpolymers.
摘要翻译：由四羧酸酯和杂环，芳族和脂族二胺的组合以及由这些三元共聚物构成的人造物制成的三聚赖氨酰亚胺。前体和将它们转化成相应的三元共聚物的方法。

50. 发明授权

US4315077A Polyimides 失效
公开(公告)号：US4315077A
公开(公告)日：1982-02-09
申请号：US267460
申请日：1981-05-27
申请人： John Gagliani , Raymond Lee
发明人： John Gagliani , Raymond Lee
IPC分类号： C08G73/10 , C08J9/02 , C08J9/00 , C08G18/16
CPC分类号： C08J9/02 , C08G73/1007 , C08G73/1028 , C08J2379/08
摘要： Terpolyimides prepared from tetracarboxylic acid esters and combinations of heterocyclic, aromatic, and aliphatic diamines and artifacts composed of those terpolymers. Precursors, and methods of converting them to the corresponding terpolymers.

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