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1. 发明授权

US4631298A Mixed diamine chain extender 失效
标题翻译：混合二胺扩链剂
公开(公告)号：US4631298A
公开(公告)日：1986-12-23
申请号：US809563
申请日：1985-12-16
申请人： J. Kenneth Presswood
发明人： J. Kenneth Presswood
IPC分类号： C08G18/65 , C08G18/80 , C08G18/14
CPC分类号： C08G18/8019 , C08G18/6529 , C08G2120/00
摘要： Mixtures of aromatic diamines, polyurethanes made therefrom, and processes for the preparation of the polyurethanes. The mixtures of aromatic diamines of the invention comprise a first aromatic diamine having a machine gel time of about 1 to 4 seconds in a 50,000 psi modulus RIM formulation reaction and the second aromatic diamine having a slower machine gel time of about 1.5 to 15 times that of the first aromatic diamine. The mixtures provide gel times of about 2.5 to 10 seconds, suitable for filling large molds such as automotive body panels. The novel aromatic diamine mixtures allow use of larger proportions of diamine to provide polyurethanes which are rigid but not brittle at demold and have unexpectedly superior flexural modulus properties. The polyurethanes formed with the chain extender mixtures of the invention have flexural modulus superior to polyurethanes formed from either of the diamines individually.
摘要翻译：芳族二胺的混合物，由其制成的聚氨酯，以及制备聚氨酯的方法。本发明的芳族二胺的混合物在50,000psi模量的RIM配方反应中包含机器凝胶时间为约1至4秒的第一芳族二胺，而第二芳族二胺的机凝胶时间较慢，约为机器凝胶时间约1.5至15倍，的第一芳族二胺。该混合物提供约2.5至10秒的凝胶时间，适用于填充诸如汽车车身面板的大型模具。新型芳族二胺混合物允许使用较大比例的二胺来提供在脱模时刚性但不脆的聚氨酯，并具有出乎意料的优异的挠曲模量性质。用本发明的扩链剂混合物形成的聚氨酯具有优于单独形成的二胺形成的聚氨酯的挠曲模量。

2. 发明授权

US5041668A Secondary diamines 失效
标题翻译：二级二胺
公开(公告)号：US5041668A
公开(公告)日：1991-08-20
申请号：US338985
申请日：1989-04-14
申请人： Christopher J. Nalepa , J. Kenneth Presswood , Gordon G. Knapp
发明人： Christopher J. Nalepa , J. Kenneth Presswood , Gordon G. Knapp
IPC分类号： C07C211/50 , C07C211/51 , C08G18/10 , C08G59/50
CPC分类号： C08G59/5033 , C07C211/50 , C07C211/51 , C08G18/10
摘要： Aromatic diamines having one or two benzene rings, two ar-N-methylamino substituents, and ar-alkyl substituents in all positions ortho to the amino substituents are novel compounds which can be used in the preparation of polyurethanes, polyureas, polyurethane-urea polymers, and epoxy resins.
摘要翻译：具有一个或两个苯环，两个ar-N-甲基氨基取代基和在氨基取代基邻位的所有位置的芳烷基取代基的芳族二胺可以用于制备聚氨酯，聚脲，聚氨酯 - 脲聚合物，和环氧树脂。

3. 发明授权

US4879182A Method of coating carbon bodies 失效
标题翻译：涂碳体的方法
公开(公告)号：US4879182A
公开(公告)日：1989-11-07
申请号：US261614
申请日：1988-10-24
申请人： J. Kenneth Presswood , Alethea H. O'Quinn
发明人： J. Kenneth Presswood , Alethea H. O'Quinn
IPC分类号： C09C1/44 , C04B41/48 , C04B41/83 , C09C3/08 , C09D179/08
CPC分类号： C04B41/009 , C04B41/4842 , C04B41/488 , C04B41/83 , Y10T428/30 , Y10T428/31721
摘要： Described is a way of sealing a carbon body such as monolithic graphite tooling so that it retains its vacuum integrity through numerous thermal cycles typical of thermoplastic processing. This is accomplished by (a) applying to the body surface a coating formulation composed of a carbon-filled solution of a polyamic acid formed by reaction between pyromellitic acid dianhydride and 2,2-bis[4-(aminophenoxy)phenyl]hexafluoropropane, and (b) heat curing the coated body to cause the polyamic acid to imidize into a thermally cured polyimide.

4. 发明授权

US5008453A Aromatic diimines 失效
标题翻译：芳香族二亚胺
公开(公告)号：US5008453A
公开(公告)日：1991-04-16
申请号：US338986
申请日：1989-04-14
申请人： Christopher J. Nalepa , J. Kenneth Presswood , Gordon G. Knapp
发明人： Christopher J. Nalepa , J. Kenneth Presswood , Gordon G. Knapp
IPC分类号： C07C251/04 , C08G18/10 , C08G18/32 , C08G59/40
CPC分类号： C08G59/4042 , C07C251/04 , C08G18/10 , C08G18/3256
摘要： Aromatic diimines having one or two benzene rings, two ar-imino substituents corresponding to the formula --N.dbd.CH.sub.2, and ar-alkyl substituents in all positions ortho to the imino substituents are novel compounds which can be used in the preparation of polyurethanes, polyureas, polyurethane-urea polymers, and epoxy resins.
摘要翻译：具有一个或两个苯环的芳族二亚胺，对应于式-N = CH 2的两个芳亚胺基取代基和与亚氨基取代基邻近的所有位置中的芳烷基取代基是可用于制备聚氨酯，聚脲的新化合物，聚氨酯 - 脲聚合物和环氧树脂。

5. 发明授权

US4831977A Pistons with wear resistant solid film lubricant coatings 失效
标题翻译：活塞与耐磨固体膜润滑剂涂料
公开(公告)号：US4831977A
公开(公告)日：1989-05-23
申请号：US74716
申请日：1987-07-17
申请人： J. Kenneth Presswood
发明人： J. Kenneth Presswood
IPC分类号： F02F3/00 , C10M111/04 , C10N30/06 , C10N40/00 , C10N40/02 , C10N50/08 , F02F3/10 , F16J1/02 , F16N15/00
CPC分类号： F16J1/02 , C10M111/04 , F16N15/00 , B29K2105/253 , B29K2995/0073 , C10M2201/00 , C10M2201/041 , C10M2201/0413 , C10M2201/0423 , C10M2201/061 , C10M2201/16 , C10M2201/18 , C10M2217/0403 , C10M2217/0415 , C10M2217/042 , C10M2217/0425 , C10M2217/043 , C10M2217/0435 , C10M2217/044 , C10M2217/0443 , C10M2217/045 , C10M2217/0453 , C10M2217/0465 , C10N2240/02 , C10N2250/121 , F05C2203/0882
摘要： Reciprocating engine parts which involve substantially continuous frictional contact are coated with a solid film lubricant having excellent wear characteristics and adhesion. The parts in question are pistons, and the area to which the wear resistant solid lubricant film is bonded is the piston skirt--i.e., all or a portion of the area below the piston rings. The lubricant film is composed of a polyimide of 2,2-bis[4-(4-aminophenoxy)phenyl]hexafluoropropane ("4-BDAF") and an aromatic tetracarboxylic acid (or dianhydride or ester thereof) containing from 25 to 125 parts by weight of fluorinated carbon per 100 parts by weight of the polyimide resin ("phr"), and preferably about 30 to about 100 phr of the fluorinated carbon.

6. 发明授权

US5004627A Polyimides for mold release 失效
标题翻译：用于脱模的聚酰亚胺
公开(公告)号：US5004627A
公开(公告)日：1991-04-02
申请号：US419395
申请日：1989-10-10
申请人： J. Kenneth Presswood , Alethea H. O'Quinn
发明人： J. Kenneth Presswood , Alethea H. O'Quinn
IPC分类号： B05D5/08 , B28B7/38 , B29C33/56 , B29C33/62 , C08G73/10 , C09D179/08
CPC分类号： C08G73/1032 , B05D5/08 , B28B7/384 , B29C33/56 , B29C33/62 , C08G73/1028 , C09D179/08 , B05D3/0254 , B29K2879/08 , Y10T428/31721
摘要： A method of treating the surface of a mold to improve its release characteristics is disclosed. A coating of a polyamic acid solution comprising the reaction product of 2,2-bis[4-(aminophenoxy)phenyl]hexafluoropropane and an aromatic tetracarboxylic acid or dianhydride or ester derivative thereof is applied to the mold surface. The coating is cured at elevated temperatures to remove the solvent and form the corresponding polyimide.
摘要翻译：公开了一种处理模具表面以改善其释放特性的方法。将包含2,2-双[4-（氨基苯氧基）苯基]六氟丙烷和芳族四羧酸或其二酸酐或其酯衍生物的反应产物的聚酰胺酸溶液的涂层施加到模具表面。涂层在高温下固化以除去溶剂并形成相应的聚酰亚胺。

7. 发明授权

US4786656A Polyhydroxyalkane/aromatic diamine chain extenders 失效
标题翻译：聚羟基烷烃/芳族二胺增链剂
公开(公告)号：US4786656A
公开(公告)日：1988-11-22
申请号：US158836
申请日：1988-02-22
申请人： J. Kenneth Presswood , James H. Simon , Christopher J. Nalepa
发明人： J. Kenneth Presswood , James H. Simon , Christopher J. Nalepa
IPC分类号： C08G18/10 , C08G18/32
CPC分类号： C08G18/10
摘要： Blends of 90-99 mol % of a polyhydroxyalkane containing 2-6 carbons and 2-3 hydroxyl groups and 1-10 mol % of an aromatic diamine having a pKb value greater than 11.3 are useful as chain extenders for polyurethanes derived from diphenylmethanediisocyanate (MDI) prepolymers. Their use overcomes the sensitivity to stoichiometry common to MDI prepolymer/polyhydroxyalkane systems and leads to the formation of cast elastomers having better green strength and a shorter demold time. The preferred blends are blends of 1,4-butanediol and di(alkylthio)toluenediamines.

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