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公开(公告)号：US4067855A
公开(公告)日：1978-01-10
申请号：US633657
申请日：1975-11-20
申请人： Tsuneyoshi Miwa , Shinji Nakazawa , Masaaki Itoga , Keizo Sano , Itaru Nakamura , Taigi Watanabe , Yasuhiko Shingu
发明人： Tsuneyoshi Miwa , Shinji Nakazawa , Masaaki Itoga , Keizo Sano , Itaru Nakamura , Taigi Watanabe , Yasuhiko Shingu
摘要： Polyester compositions suitable for fiber and film formation contain from 0.2 to 3.0% by weight of fine particles of uniform size and possess sufficient slippery tendency, appropriate opacity and crystallizing potential; said particles containing lithium and phosphorus as a lithium salt of a phosphoric acid ester constituent of short chain polyesters.
摘要翻译： 适用于纤维和成膜的聚酯组合物含有0.2至3.0重量％的均匀尺寸的细颗粒，并具有足够的光滑倾向，适当的不透明度和结晶势; 所述颗粒含有作为短链聚酯的磷酸酯成分的锂盐的锂和磷。
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公开(公告)号：US4112187A
公开(公告)日：1978-09-05
申请号：US678365
申请日：1976-04-19
IPC分类号： B29C71/00 , B29C49/00 , B29C55/00 , B29C55/12 , B29C61/00 , B29C71/02 , B29D7/01 , C08G69/46 , C08J5/18 , G11B5/73 , H01F10/04 , G11B5/78
CPC分类号： G11B5/73 , C08G69/46 , G11B5/7305 , Y10S428/90 , Y10T428/31739
摘要： An improved magnetic recording medium comprising a flexible support consisting of at least about 70 mol % of p-oriented aromatic polycarbonamide units. The polycarbonamide may include substituent groups on the aromatic nuclei. The support has a density of more than about 1.41 g/cm.sup.3 at 25.degree. C and 0% relative humidity, and a tensile modulus higher than about 800 kg/mm.sup.2 in at least one direction, combined with a thin layer of magnetically susceptible material deposited electrically or dispersed in a nonmagnetic binder. The magnetic recording medium in this invention shows excellent running performance and has superior dimensional stability both thermally and hygroscopically.
摘要翻译： 一种改进的磁记录介质，包括由至少约70mol％的取向的芳族聚碳酰胺单元组成的柔性载体。 聚碳酰胺可以包括芳族核上的取代基。 载体在25℃和0％相对湿度下的密度大于约1.41g / cm 3，并且在至少一个方向上具有高于约800kg / mm 2的拉伸模量，结合沉积的易敏材料薄层 电或分散在非磁性粘合剂中。 本发明的磁记录介质表现出优异的运行性能，并且具有优异的热吸湿性尺寸稳定性。
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公开(公告)号：US3966686A
公开(公告)日：1976-06-29
申请号：US536256
申请日：1974-12-24
IPC分类号： B29C71/00 , B29C49/00 , B29C55/00 , B29C55/12 , B29C61/00 , B29C71/02 , B29D7/01 , C08G69/46 , C08J5/18 , G11B5/73
CPC分类号： G11B5/73 , C08G69/46 , G11B5/7305 , Y10S428/90 , Y10T428/31739
摘要： Aromatic polyamide-hydrazide films, consisting of p-benzamide p-phenylene terephthalamide and/or terephthaloyl hydrazide recurring units, as major chain constituents, are removed from inorganic residue by an aqueous mixture which dissolves or swells the films, and are heated up to their crystallization temperatures in tension, giving rise to high tensile strength and modulus, good hygroscopic dimensional stability and excellent electrical insulation properties.
摘要翻译： 由对苯甲酰胺对苯二甲酰对苯二胺和/或对苯二甲酰肼重复单元组成的芳族聚酰胺 - 酰肼膜作为主要的链组分，通过溶解或溶胀薄膜的水性混合物从无机残渣中除去，并加热至其 结晶温度在拉伸，产生高拉伸强度和模量，良好的吸湿尺寸稳定性和优良的电绝缘性能。
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