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61. 发明授权

US4113683A Production of high temperature resistant polymer compositions capable of forming superior fiber reinforced composite articles 失效
标题翻译：生产能够形成优质纤维增强复合制品的耐高温聚合物组合物
公开(公告)号：US4113683A
公开(公告)日：1978-09-12
申请号：US759927
申请日：1977-01-17
申请人： Ilmar L. Kalnin , George J. Breckenridge
发明人： Ilmar L. Kalnin , George J. Breckenridge
IPC分类号： C08L67/02 , C08L77/00 , C08L79/04 , C08G41/02 , C08G51/16 , C08G69/48 , C08G73/18
CPC分类号： C08L79/04 , C08L67/02 , C08L77/00
摘要： Reinforced high temperature molding compositions are provided by a two step precipitation process wherein a polymer matrix comprising either (a) a nitrogenous intractable high temperature resistant polymer such as poly(bisbenzimidazobenzophenanthroline) or (b) an admixture comprising a major amount of the nitrogenous intractable high temperature resistant polymer of (a) and a minor amount of a cross-linkable polymer such as a polybenzimidazole, is affixed to the surface of a partially plasticized organic fiber derived from polymers selected from the group consisting of (1) a nitrogenous intractable high temperature resistant polymer, (2) polybenzimidazoles (3) high temperature resistant aromatic polyamides, and (4) high temperature resistant aromatic polyesters and mixtures thereof. More specifically, the matrix polymer is initially partially precipitated onto the surface of the organic fibers from a solution such as a sulfuric acid dope and then completely precipitated by an appropriate nonsolvent medium wherein the matrix polymer is affixed to the surface of the organic fiber in the form of a fiber particle aggregate. The resulting composition is capable of providing a three dimensional article having improved flexural strength.
摘要翻译：通过两步沉淀法提供增强的高温成型组合物，其中聚合物基质包括（a）含氮顽固耐高温聚合物如聚（二苯并咪唑苯并菲菲啉）或（b）包含主要含量的难治性高的混合物（a）的耐高温聚合物和少量的可交联聚合物如聚苯并咪唑固定在部分增塑的有机纤维的表面上，所述部分增塑的有机纤维来自选自以下的聚合物：（1）含氮难溶的高温耐热聚合物，（2）聚苯并咪唑（3）耐高温芳族聚酰胺，和（4）耐高温芳族聚酯及其混合物。更具体地说，基质聚合物最初从溶液如硫酸涂料部分沉淀到有机纤维的表面上，然后通过合适的非溶剂介质完全沉淀，其中基质聚合物固定在有机纤维的表面上纤维颗粒聚集体的形式。所得组合物能够提供具有改善的弯曲强度的三维制品。

62. 发明授权

US4020142A Chemical modification of polybenzimidazole semipermeable 失效
标题翻译：聚苯并咪唑半渗透化学改性
公开(公告)号：US4020142A
公开(公告)日：1977-04-26
申请号：US606617
申请日：1975-08-21
申请人： Howard J. Davis , Norman W. Thomas
发明人： Howard J. Davis , Norman W. Thomas
IPC分类号： B01D71/62 , C08G73/18 , C08J5/22 , B01D39/00
CPC分类号： C08J5/2287 , B01D71/62 , C08G73/18 , C08J2379/06
摘要： A preformed polybenzimidazole semipermeable membrane (e.g., a film or hollow filament) is chemically modified in accordance with the present invention. Imidazole groups of the polybenzimidazole membrane are cross-linked by reaction with a strong polybasic acid or its acid chloride (as defined). During the reaction the polybasic acid is dissolved in a relatively mild acid medium (e.g., glacial acetic acid) which serves to decrease the basicity of the imidazole groups and to promote the desired cross-linking reaction. The resulting cross-linked membrane is tougher than the untreated membrane and may be more readily handled without deleterious results. Also, the resulting cross-linked polybenzimidazole membrane no longer is soluble in N,N-dimethylacetamide, and exhibits improved service characteristics such as improved compaction resistance during prolonged usage at high pressure. The product of the present invention is particularly suited for use in separations from acid waste streams. Cross-linked polybenzimidazole membranes capable of reverse osmosis separations, ion exchange separations, and ultrafiltration separations may be formed in accordance with the present process.
摘要翻译：根据本发明，预先形成的聚苯并咪唑半透膜（例如膜或中空丝）被化学改性。聚苯并咪唑膜的咪唑基通过与强多元酸或其酰氯反应（如所定义）而交联。在反应期间，将多元酸溶解在相对温和的酸性介质（例如，冰醋酸）中，其用于降低咪唑基团的碱度并促进所需的交联反应。所得到的交联膜比未处理的膜更坚韧，并且可以更容易地处理而没有有害的结果。此外，所得到的交联聚苯并咪唑膜不再溶于N，N-二甲基乙酰胺，并且表现出改善的使用特性，例如在高压下长时间使用时提高的耐压性。本发明的产品特别适用于与酸性废物流分离。可以根据本方法形成能够进行反渗透分离，离子交换分离和超滤分离的交联聚苯并咪唑膜。

63. 发明授权

US3836500A Solutions of polybenzimidazoles yielding shaped polybenzimidazole articles having improved color stability 失效
标题翻译：具有改进的颜色稳定性的聚苯二甲酰胺的溶液形成的聚苯并咪唑类物品
公开(公告)号：US3836500A
公开(公告)日：1974-09-17
申请号：US32705073
申请日：1973-01-26
申请人： CELANESE CORP
发明人： CALUNDANN G , FERMENT G
IPC分类号： C08G73/18 , C08L79/04 , C08F45/44
CPC分类号： C08L79/04 , C08G73/18
摘要： POLYBENZIMIDAZOLE SHAPED ARTICLES SUCH AS YARNS, FIBERS, FILMS OR THE LIKE HAVE A TENDENCY TO DARKEN BY AB UNKNOWN MECHANISM WHICH MAY INCLUDE POLYMER PHOTODEGRADABILITY BY EXPOSURE TO SUNLIGHT OR REACTION WITH AMINE END GROUPS ON THE POLYMER. THE COLOR STABILITY OF POLYBENZIMIDAZOLE ARTICLES CAN BE IMPROVED BY INCORPORATING INTO THE SOLUTIONS UTILIZED TO FORM THE ARTICLES AN AMOUNT ERRECTIVE TO STABILIZED THE COLOR OF THE RESULTING POLYBENZIMIDAZOLE ARTICLES OF AN AMINE BLOCKING, COLOR STABILIZING REAGENT (SUCH AS CARBOXYLIC ACID ANHYDRIDES AND CARBOXYLIC ACID HALIDES) WITHOUT DETERMENTALLY AFFECTING THE SOLUBILITY OF THE POLYBENZIMIDAZOLE IN THE SOLVENT. ACETIC ANHYDRIDE IS THE PREFERRED AMINE BLOCKING, COLOR STABILIZING REAGENT.

64. 发明授权

US3784517A Preparation of polybenzimidazoles in the presence of a sulfone solvent 失效
标题翻译：在溶剂中存在的聚苯二甲酸钠的制备
公开(公告)号：US3784517A
公开(公告)日：1974-01-08
申请号：US3784517D
申请日：1972-06-27
申请人： US AIR FORCE
发明人： HEDBERG F , MARVEL C
IPC分类号： C08G73/18 , C08G33/02
CPC分类号： C08G73/18
摘要： A ONE-STEP PROCESS FOR PREPARING POLYBENZIMIDAZOLES IS DISCLOSED THAT COMPRISES REACTING AN AROMATIC TETRAAMINO COMPOUND WITH THE DIPHENYL ESTER OR ANHYDRIDE OF AN AROMATIC DISCARBOXYLIC ACID IN THE PRESENCE OF AN ALIPHATIC OR AROMATIC SULFONE SOLVENT OR REACTION MEDIUM. THE PROCESS PROVIDES IN AQUANTITATIVE YEILDS HIGH MOLECULAR WEIGHT PRODUCTS THAT ARE PARTICULARLY SUITABLE FOR USE IN FIBER FORMATION.

65. 发明授权

US3740410A Acid addition salts of 2,3,5,6-tetraaminopyridine and a process for their preparation 失效
标题翻译： 2,3,5,6-四氨基吡啶的酸添加量及其制备方法
公开(公告)号：US3740410A
公开(公告)日：1973-06-19
申请号：US3740410D
申请日：1970-11-23
申请人： HORIZONS INC
发明人： GERBER A
IPC分类号： A61K8/49 , A61Q5/06 , C07D213/73 , C07D213/75 , C08G73/06 , C08G73/18 , C08G73/20 , C07D31/42
CPC分类号： C08G73/20 , A61K8/4926 , A61Q5/065 , C07D213/73 , C08G73/0627 , C08G73/18
摘要： PROCESSES FOR THE PREPARATION 2,6-DIAMINO-3,5-DINITROPYRIDINE FROM 2,6-DIAMINOPYRIDINE AND CATALYTIC REDUCTION OF THIS DINITROPYRIDINE TO 2,3,5,6-TETRAAMINOPYRIDINE FREE BASE AND ACID SALTS THEREOF, AND PROCESSES FOR PREPARING POLYMERS FROM SAID PYRIDINES.

66. 发明授权

US3611917A Calender stack with swimming roll 失效
标题翻译： CALENDER STACK WITH SWIMMING ROLL
公开(公告)号：US3611917A
公开(公告)日：1971-10-12
申请号：US3611917D
申请日：1968-06-03
申请人： DOMINION ENG WORKS LTD
发明人： BRYCE RODNEY HAROLD , VADAS ROBERT MAXIMILIAM
IPC分类号： C08G73/18 , D21G1/00 , B30B3/04
CPC分类号： D21G1/002 , C08G73/18
摘要： The use of a stacked paper calender with a single stack of rolls in place of the usual tandem arrangement is promoted by providing an intermediate variable deflection roll and controlling the internal fluid pressure within the roll to control roll deflection under load in relieving or increasing the nip loads in the lower portion of the stack. The intermediate roll is supported by end bearings which are provided with control means for applying upward relief force.

67. 发明授权

US3578644A Hydroxyl modified polybenzimidazoles 失效
标题翻译：羟基改性聚苯二咪唑
公开(公告)号：US3578644A
公开(公告)日：1971-05-11
申请号：US3578644D
申请日：1968-02-23
申请人： WHITTAKER CORP
发明人： TRISCHLER FLOYD D
IPC分类号： C08G73/18 , C08G33/02
CPC分类号： C08G73/18 , Y10T428/31678 , Y10T442/2246 , Y10T442/2992
摘要： WHEREIN R IS A DIVALENT ALIPHATIC, CYCLOALIPHATIC OR AROMATIC GROUP; AND R'' IS DIVALENT ALIPHATIC. THIS PATENT FURTHER DESCRIBES THE PROCEDURES FOR THE PREPARATION OF THESE NOVEL POLYMERS AND USES OF THESE POLYMERS.

BENZIMIDAZOL-6,2-YLENE)-R-

-(1-(HO-R''-)-BENZIMIDAZOL-2,6-YLENE)-(1-(HO-R''-)-

THIS PATENT DESCRIBES NOVEL MODIFIED POLYBENZIMIDAZOLES HAVING THE FOLLOWING REPEATING UNIT

68. 发明授权

US3530152A Novel bis tetraphenylmethanes 失效
标题翻译：新的BIS TETRAPHENYLMETHANES
公开(公告)号：US3530152A
公开(公告)日：1970-09-22
申请号：US3530152D
申请日：1966-07-27
申请人： MINNESOTA MINING & MFG
发明人： TOKOLI EMERY G
IPC分类号： C07C43/205 , C07C43/263 , C07C43/29 , C07C43/295 , C07D307/91 , C08G63/193 , C08G64/06 , C08G73/10 , C08G73/18 , C08G73/22 , C09B11/04 , C09B11/10
CPC分类号： C07D307/91 , C07C43/295 , C07C323/00 , C08G63/193 , C08G64/06 , C08G73/1067 , C08G73/1075 , C08G73/18 , C08G73/22

69. 发明授权

US3408336A Heat stabilized polybenzimidazoles 失效
标题翻译：热稳定化聚苯并咪唑
公开(公告)号：US3408336A
公开(公告)日：1968-10-29
申请号：US47933965
申请日：1965-08-12
申请人： MONSANTO CO
发明人： BENSON ROYAL H
IPC分类号： C08G73/18
CPC分类号： C08G73/18

70. 发明授权

US3387058A Fusible and infusible polymers from carbocyclic aromatic polycarboxylic phenyl esters and carbocyclic aromatic tetramines 失效
标题翻译：来自碳环芳族多羧酸苯基酯和碳环芳族四胺的可熔和不熔聚合物
公开(公告)号：US3387058A
公开(公告)日：1968-06-04
申请号：US33297163
申请日：1963-12-23
申请人： WHITTAKER CORP
发明人： LEVINE HAROLD H
IPC分类号： C08G73/18
CPC分类号： C08G73/18 , Y10S525/928

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