Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 7408018 | Elastomeric functional biodegradable copolyester amides and copolyester urethanes The invention provides elastomeric copolyester amides, elastomeric copolyester urethanes, and methods for making the same. The polymers are based on α-amino acids and possess physical, chemical and biodegradation properties that render them suitable for use in the ... | 08/05/2008 |
| 7304122 | Elastomeric functional biodegradable copolyester amides and copolyester urethanes The present invention provides elastomeric copolyester amides, elastomeric copolyester urethanes, and methods for making the same. The polymers that are based on α-amino acids and possess suitable physical, chemical and biodegradation properties. The polymers are u... | 12/04/2007 |
| 7151127 | Use of thermoplastic polyamide molding compositions with reduced formation of solid deposits and/or coverings The present invention relates to the use of thermoplastic polyamide moulding compositions with reduced or strongly reduced formation of solid deposits and/or coverings during a thermoplastic conversion into commodity goods in discontinuous processes in particular in... | 12/19/2006 |
| 7064176 | Coating material for electronic components The invention relates to novel polyhydroxyamide compounds that, in the form of their oxazoles, ane suited as a coating material, particularly for electronic components. The invention also relates to a method for producing these novel compounds and to the use thereof... | 06/20/2006 |
| 7026436 | Low temperature polyimide adhesive compositions and methods relating thereto The present invention relates to a polyimide adhesive composition having a polyimide derived from an aromatic dianhydride and a diamine component, where the diamine component is preferably about 50 to 90 mole % of an aliphatic diamine and about 10 to 50 mole % of an... | 04/11/2006 |
| 6900284 | POLY-O-HYDROXYAMIDES, POLYBENZOXAZOLES, PROCESSES FOR PRODUCING POLY-O-HYDROXYAMIDES, PROCESSES FOR PRODUCING POLYBENZOXAZOLES, DIELECTRICS INCLUDING A POLYBENZOXAZOLE, ELECTRONIC COMPONENTS INCLUDING THE DIELECTRICS, AND PROCESSES FOR MANUFACTURING THE ELECTRONIC COMPONENTS Poly-o-hydroxyamides are cyclicized to obtain polybenzoxazoles. The poly-o-hydroxyamides provide effective filling of trenches. In particular, the poly-o-hydroxyamides can fill trenches having a width of less than 100 nm and an aspect ratio of more than 4. Further, ... | 05/31/2005 |
| 6762277 | Method of manufacturing N-carboxyamino acid anhydride and polyamino acid A method of manufacturing a new N-carboxyamino acid anhydride and polyamino acid using a simple process operation. The method for manufacturing N-carboxyamino acid anhydride comprising reacting α-amino acid with di-tert-butyltricarbonate. The method for manu... | 07/13/2004 |
| 6657016 | Polyester resin composition A polyester resin composition comprising 50 equivalents/ton or more of an aromatic ring in the resin and at least one thermosetting resin selected from the group consisting of melamine resin, urea resin, benzoguanamine resin and phenol resin. The aromatic... | 12/02/2003 |
| 6649730 | Aromatic polyester amide The object of the present invention is to provide an aromatic polyester amide which has improved mechanical strength and high elastic modulus after being molded into a thin wall article as well as exhibits excellent heat stability and moldability. The pre... | 11/18/2003 |
| 6617414 | Aromatic diamine/aromatic dicarboxylate and production method thereof The present invention provides aromatic diamine/aromatic dicarboxylate having the following formula (I) wherein each symbol is as defined in the specification, which is in the form of particles having a median diameter of 5-100 μm and whiteness of not le... | 09/09/2003 |
| 6586561 | Rigid rod ion conducting copolymers Sulfonated polyimide polymers incorporating bulky monomers are disclosed. The polymers have a liquid crystalline structure and exhibit high conductivity, high water uptake and water stability over a range of relative humidities and temperatures. The polym... | 07/01/2003 |
| 6586555 | Processes of preparing condensed polymers with polycarboxylic acids and polyamines This invention provides processes of the preparation of polyamides, polyimides, and polyamideimides, which are easy to purify after reactions, from polycarboxylic acids and polyamines in high yield without side reactions such as a change of color to black... | 07/01/2003 |
| 6503538 | Elastomeric functional biodegradable copolyester amides and copolyester urethanes The present invention provides elastomeric copolyester amides, elastomeric copolyester urethanes, and methods for making the same. The polymers that are based on -amino acids and possess suitable physical, chemical and biodegradation properties. Th... | 01/07/2003 |
| 6465389 | Heat resistant catalyst sheet and process for producing same There are provided (i) a heat resistant catalyst sheet having an aramid fiber and a catalyst component-containing titania fiber; and (ii) a process for producing a heat resistant catalyst sheet, which has the step of making paper from a mixture of an aram... | 10/15/2002 |
| 6222000 | Process for producing amorphous anisotropic melt-forming polymers having a high degree of stretchability Process for producing highly stretchable, amorphous anisotropic melt-forming polymers having recurring units derived from p-hydroxybenzoic acid, 6-hydroxy-2-naphthoic acid, at least one aromatic diacid and at least one aromatic diol and/or hydroxyamine co... | 04/24/2001 |
| 6197920 | Formulation for the production of 1, 3-bis (4-aminophenoxy) naphthalene and its polymer The present invention relates to the synthesis of new type of diamine monomer, 1,3-bis(4-amonophenoxy)naphthalene, and with such a compound to produce a series of aromatic polymers, including polyamide, polyimide, copoly(amide-imide)s, etc., such polymers... | 03/06/2001 |
| 6184337 | Adhesive tape for electronic parts and liquid adhesive The present invention provide a novel polyimide which is soluble in organic solvents and excels in heat resistance, and to a process for producing the polyimide. The polyimide of the present invention comprises a repeating unit represented by the formula ... | 02/06/2001 |
| 6132884 | Process for producing amorphous anisotrophic melt-forming polymers having a high degree of stretchability and polymers produced by same Process for producing highly stretchable, amorphous anisotropic melt-forming polymers having recurring units derived from p-hydroxybenzoic acid, 6-hydroxy-2-naphthoic acid, at least one aromatic diacid and an aromatic diol and/or hydroxyamine component, a... | 10/17/2000 |
| 5973202 | Preparation of poly-o-hydroxyamides and poly o-mercaptoamides In a process for the preparation of poly-o-hydroxyamides and poly-o-mercaptoamides, a bis-o-aminophenol or a bis-o-aminothiophenol is reacted with a dicarboxylic acid derivative of the following structure: ##STR1## with D=O, S, or NH and where R* is ... | 10/26/1999 |
| 5919890 | Method for production of polybenzazole A method for producing polybenzazole, which comprises reacting a PBZ monomer salt with an AA-PBZ monomer or a BB-PBZ monomer in a non-oxidizing solvent having a dehydrating action to give an oligomer, and adding the AA-PBZ monomer or BB-PBZ monomer, which... | 07/06/1999 |
| 5919889 | Melt processable poly(ester-amide) capable of forming an anisotropic melt containing an aromatic moiety capable of forming and amide linkage A melt processable poly(ester-amide) which is capable of forming an anisotropic melt phase is provided. A poly(ester-amide) of the present invention may have recurring units of: (a) 4-hydroxybenzoyl moiety, (b) 6-oxy-2-naphthoyl moiety, (c) 4,4'-biphenol ... | 07/06/1999 |
| 5866677 | Method and system for producing poly (lactic acid) A method and system for producing poly(lactic acid) enable trapping and recovering of lactide vapor discharged from a reaction vessel without requiring a solvent or the like. In the method and system, lactide vapor is discharged from a polymerization reac... | 02/02/1999 |
| 5854380 | Polyimide precursor solution process for the production thereof coating or film obtained therefrom and process for producing the film This invention provides a polyimide precursor solution having high concentration and low viscosity and a production process thereof, and polyimide coatings and films having excellent physical properties obtained therefrom and a production process thereof.... | 12/29/1998 |
| 5807969 | Preparation of poly-O-hydroxyamides and poly O-mercaptoamides In a process for the preparation of poly-o-hydroxyamides and poly-o-mercaptoamides, a bis-o-aminophenol or a bis-o-aminothiophenol is reacted with a dicarboxylic acid derivative with the following structure: M--CO--R*--CO--M where M stands for the residue of a... | 09/15/1998 |
| 5783655 | Aromatic polyamide pulp by means of continuous transferable polymerization-orientation method and a process for preparation thereof A process for the preparation of aromatic polyamide pulp having both excellent physical properties and a high degree of polymerization by continuous polymerization and orientation by using of mixed solutions. The solutions are prepared by reacting diamine... | 07/21/1998 |
| 5783654 | Preparation of poly-O-hydroxyamides and poly O-mercaptoamides In a process for the preparation of poly-o-hydroxyamides and poly-o-mercaptoamides, a bis-o-aminophenol or a bis-o-aminothiophenol is reacted with a dicarboxylic acid ester with the following structure: G--O--CO--R*--CO--O--G, where G is an (optionally substit... | 07/21/1998 |
| 5750638 | Method for the production of poly-o-hydroxyamides A method for producing poly-o-hydroxy amides by heating a dicarboxylic acid to a temperature ࣙ80° C., together with a sulfonic acid chloride and a tertiary amine in a suitable solvent, to form a reaction mixture and reacting the mixture obtained with a... | 05/12/1998 |
| 5747175 | LCP blends Liquid-crystalline polymer blends comprising two or more cholesteric liquid-crystalline polymers or at least one nematic liquid-crystalline polymer and at least one cholesteric liquid-crystalline polymer. All hues can be produced specifically and in a reproduc... | 05/05/1998 |
| 5741599 | Polyimide compositions for electrodeposition and coatings formed of the same Aromatic diamines having a carboxylic acid group and various other diamines are reacted with aromatic tetracarboxylic dianhdyrides in organic polar solvents to provide polyimides. Polyimide compositions for electrodeposition which comprise the neutralized... | 04/21/1998 |
| 5726279 | Preparation of poly-o-hydroxyamides and poly o-mercaptoamides In a process for the preparation of poly-o-hydroxyamides and poly-o-mercaptoamides, a bis-o-aminophenol or a bis-o-aminothiophenol is reacted with a dicarboxylic acid derivative of the following structure: ##STR1## with D=O, S, or NH and where R* is ... | 03/10/1998 |
| 5703199 | Process for the preparation of nitrogen-containing polymers To prepare nitrogen-containing aromatic polymers, for example polyamides, polyimides and polybenzimidazoles, polyvalent aromatic carboxylic acids and aromatic diamines and/or aminocarboxylic acids or reactive derivatives thereof are reacted in a high-boil... | 12/30/1997 |
| 5677394 | Melt-processable block copolyesterimide and method for manufacturing it A melt-processable block copolyesterimide comprising the repeating units (I), (II) and (III) and, optionally, a repeating unit (IV), wherein (I) is a repeating unit of the formula ##STR1## wherein R is an aliphatic polyether chain and/or a polysiloxa... | 10/14/1997 |
| 5663287 | Polyimide and process for producing the same The present invention provide a novel polyimide which is soluble in organic solvents and excels in heat resistance, and to a process for producing the polyimide. The polyimide of the present invention comprises a repeating unit represented by the formula ... | 09/02/1997 |
| 5646234 | Production of fibers or films using specific forming solutions and the fibers of films obtainable thereby A process for producing fibers or films by the steps of: a) preparing an aromatic polyamide by polycondensation of dicarbonyl dihalides or mixtures thereof with at least two diamines in N-alkyllactams as a solvent, the polycondensation being of at least 90 mol... | 07/08/1997 |
| 5610261 | Adamantane based three-dimensional rigid-rod polymers High compressive strength, three-dimensional para-oriented benzobisoxazole polymers of the formula: ##STR1## wherein Q is ##STR2## and wherein Z represents repeating units of the formula: ##STR3##... | 03/11/1997 |
| 5606012 | Polyetheramidoamine hydrogels as heparinizable materials Polymeric polyetheramidoamine hydrogel materials, which are capable of complexing heparin in physiological conditions are herein described. Said materials are useful in the manufacturing of medical devices.... | 02/25/1997 |
| 5602226 | Method of making multidimensional polyesters The yield of fully substituted, multidimensional aromatic hubs in the condensation of hydroxyl and acid halide functionalities is improved by adding a thallium catalyst, such as thallium ethoxide (T1-OC2 H5), in the solvent.... | 02/11/1997 |
| 5591809 | Process for preparing hyperbranched polymers The present invention provides novel one-step processes for preparing highly branched macromolecule polymers that have highly controlled molecular architectures. The process comprises the reaction of a branching monomer such as a substituted phenyl compou... | 01/07/1997 |
| 5571891 | Aromatic copolyamides, production thereof, formed structures and production thereof Aromatic copolyamides, production thereof, formed structures and production thereof Described are aromatic copolyamides comprising the structural repeat units of the formulae I, II and III ##STR1## where Ar1, Ar2, Ar3... | 11/05/1996 |
| 5554722 | Aromatic polyamide compositions with improved electrostatic properties, formed structures produced therefrom, and use and production thereof Aromatic polyamide compositions with improved electrostatic properties, formed structures produced therefrom, and use and production thereof. Described are compositions comprising an aromatic polyamide which is soluble in organic solvents and from 0.01 to 30% ... | 09/10/1996 |
