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公开(公告)号：US3951902A
公开(公告)日：1976-04-20
申请号：US524607
申请日：1974-11-18
CPC分类号： C08G73/122
摘要： A compliant polyimide having superior thermal-mechanical properties can be produced by reacting an aromatic bis(furfurylimide) with an aliphatic ether bis(maleimide) via a Diels-Alder reaction. These polyimides display a long-term thermal-oxidative stability and a high percent recoverable elongation to break, and they are suitable for use as films, fibers, coatings, adhesives, structures, and sealants.
摘要翻译： 通过Diels-Alder反应使芳族双（糠酰亚胺）与脂族醚双（马来酰亚胺）反应，可以制备具有优异热机械性能的顺应性聚酰亚胺。 这些聚酰亚胺显示长期的热氧化稳定性和高可回收的断裂伸长率，并且它们适合用作薄膜，纤维，涂料，粘合剂，结构和密封剂。
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公开(公告)号：US4179551A
公开(公告)日：1979-12-18
申请号：US845058
申请日：1977-10-25
IPC分类号： C08G73/12 , C08F226/06
CPC分类号： C08G73/124
摘要： Polyimide prepolymers formed by thermo-reactions of an aliphatic bismaleimide, where the aliphatic group is a polyaliphatic ether, with an aromatic bismaleimide and/or an aromatic diamine in combination with a cross-linking agent having at least two vinyl groups provide compositions which are curable at low temperatures, i.e., 65.degree. C. or less.
摘要翻译： 通过脂族双马来酰亚胺（其中脂族基团是聚脂族醚）与芳族双马来酰亚胺和/或芳族二胺与具有至少两个乙烯基的交联剂组合的热反应形成的聚酰亚胺预聚物提供了可固化的 在低温，即65℃以下。
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公开(公告)号：US3953544A
公开(公告)日：1976-04-27
申请号：US468705
申请日：1974-05-10
IPC分类号： C07C233/09 , C07C67/00 , C07C231/00 , C07C231/02 , C07C231/12 , C07C233/10 , C07C233/20 , C09J4/00 , C09J4/02 , C08F120/02 , C07C69/00 , C07C69/52 , C08F226/00
摘要： A low temperature curing polymeric adhesive composition may be made by reacting an amino alcohol having between 1 and 3 amino groups and between 2 and 5 hydroxyl groups with a stoichiometric amount of a carboxylic acid or derivative. Free radical catalysts and accelerators may be added to speed the cure of the adhesive. These adhesive resins can be cured at or near ambient room temperature and are highly desired for fabrication of bonded materials possessing long fatigue life because of reduced stresses that might be induced at higher cure temperatures. A generalized formula may be illustrated as follows: ##EQU1## WHERE R" may be hydrogen, alkyl, or cycloalkyl; R' may be hydrogen or alkyl; R is an alkyl; R.sub.1 may be hydrogen, an alkyl, or phenyl; m is an integer from 1 to 3; and n is an integer from 1 to 2.
摘要翻译： 低温固化聚合物粘合剂组合物可以通过使具有1至3个氨基的氨基醇和2至5个羟基与化学计量的羧酸或衍生物反应来制备。 可以加入自由基催化剂和促进剂以加速粘合剂的固化。 这些粘合剂树脂可以在室温或接近环境室温下固化，并且对于制造具有较长疲劳寿命的粘结材料是非常需要的，因为在较高固化温度下可能引起的应力减小。 广义式可以说明如下：OO并行平行（R''CH = CR'CONH）nR1R（OCR'C = CHR“）m其中R”可以是氢，烷基或环烷基; R'可以是氢或烷基; R是烷基; R 1可以是氢，烷基或苯基; m为1〜3的整数; n为1〜2的整数。
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公开(公告)号：US06643998B1
公开(公告)日：2003-11-11
申请号：US10142457
申请日：2002-05-10
IPC分类号： B65B1100
CPC分类号： B65B9/13
摘要： A packaging apparatus for enclosing a head portion of a stethoscope in a barrier material. The packaging apparatus includes a housing having an interior with an opening for allowing the insertion of a head portion of a stethoscope into the interior. A sensor assembly detects the insertion of the head portion of the stethoscope. A door assembly selectively closes the opening. The door assembly comprises a door member and a door actuator. The door member is movable between an open position and a closed position. A vacuum assembly evacuates air from the interior. A table member supports a section of a roll of barrier material comprising individual plastic sleeves. A feed assembly positions the barrier material. A handling assembly manipulates an open end of the sleeves. The handling assembly includes an upper attachment member and a lower attachment member for releasably attaching to top and bottom sides of the open end of the sleeve respectively. A control device controls each of the assemblies in a sequential manner.
摘要翻译： 一种用于将听诊器的头部封装在阻挡材料中的包装装置。 包装装置包括具有内部的壳体，该内部具有允许将听诊器的头部插入内部的开口。 传感器组件检测听诊器头部的插入。 门组件选择性地关闭开口。 门组件包括门构件和门致动器。 门构件可在打开位置和关闭位置之间移动。 真空组件从内部排出空气。 桌子构件支撑包括单个塑料套筒的阻挡材料卷的一部分。 进料组件定位阻挡材料。 处理组件操纵套筒的开口端。 处理组件包括上连接构件和下连接构件，用于可分别地连接到套筒的开口端的顶侧和底侧。 控制装置以顺序的方式控制每个组件。
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公开(公告)号：US4269961A
公开(公告)日：1981-05-26
申请号：US84651
申请日：1979-10-15
IPC分类号： C08G73/12 , C08F226/06
CPC分类号： C08G73/124
摘要： Polyimide prepolymers formed by thermo-reactions of an aliphatic bismaleimide, where the aliphatic group is a polyaliphatic ether, with an aromatic bismaleimide and/or an aromatic diamine in combination with a trismaleimide which are curable upon addition of an acid catalyst and/or heating to about 65.degree. C.
摘要翻译： 通过脂族双马来酰亚胺（其中脂族基团是多脂族醚）与芳族二马来酰亚胺和/或芳族二胺与三马来酰亚胺组合的热反应形成的聚酰亚胺预聚物，其可以通过加入酸催化剂和/或加热至 约65℃
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公开(公告)号：US4173700A
公开(公告)日：1979-11-06
申请号：US917602
申请日：1978-06-21
CPC分类号： C08G73/1064 , C08G73/1014 , C08G73/1046 , C08G73/1067 , C08G73/1071 , C08G73/122 , C08G73/123
摘要： End-capping an aromatic diamine or a precursor formed by reaction of an aromatic diamine with an aromatic dianhydride with difluoromaleic anhydride yields prepolymers which thermally cure at temperatures from about 150.degree. to about 200.degree. C. to form polymers which display long-term thermal stability at temperatures up to 300.degree. C. and more.
摘要翻译： 由芳族二胺与芳族二酐与二氟马来酸酐反应形成的芳族二胺或前体封端得到预聚物，其在约150℃至约200℃的温度下热固化，形成显示长期热稳定性的聚合物 温度高达300℃以上。
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