Did You Know...
...that Robert Adler has the dubious distinction of being the Father of the Couch Potato? Back in 1955 Adler was employed by what was then Zenith Radio Corp., where he was charged to invent something that would allow viewers to turn down the TV volume without leaving their chairs. After a series of flops (such as a wired contraption that people tripped over), Adler hit on the idea of using sound waves. Thus the Remote Control was born...
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| Number | Title | Issue Date |
| 7714096 | Resin composition, cured product and optical parts It is provided for a resin composition including (A) at least one polyamic acid having the structure represented by the following formula (1): wherein R1 is independently an alkyl group having 1 to 3 carbon atoms... | 05/11/2010 |
| 7309756 | Methods for converting linear polyesters to macrocyclic oligoester compositions and macrocyclic oligoesters Macrocyclic oligoesters and compositions comprising macrocyclic oligoesters are prepared from intermediate molecular weight polyesters. In one embodiment, a diol is contacted with a dicarboxylic acid or a dicarboxylate in the presence of a catalyst to produce a comp... | 12/18/2007 |
| 7288603 | Polybenzazole compound having sulfonic acid group and/or phosphonic acid group, resin composition containing the same, resin molding, solid polymer electrolyte membrane, solid polymer electrolyte membrane/electrode assembly and method of preparing assembly An object of the present invention is to obtain a novel polymeric material capable of forming a solid polymer electrolyte excellent not only in processability, solvent resistance and durability/stability but also in ion conductivity by introducing sulfonic acid grou... | 10/30/2007 |
| 7151143 | Blends containing macrocyclic polyester oligomer and high molecular weight polymer The invention provides blends of macrocyclic polyester oligomer (MPO) with high-molecular-weight polymer and polymerization catalyst as friable, one-component, ready-to-polymerize materials with long shelf life. The invention also provides methods for preparation an... | 12/19/2006 |
| 7148314 | Process for preparation of functionalized polyimides A method for preparation of a sulfonic and or sulfonic acid salt containing polyimide resins comprising melt reaction of a polyimide resin with an organic compound, wherein the organic compound contains at least one aliphatic primary amine functionality and at least... | 12/12/2006 |
| 7109287 | Space environmentally durable polyimides and copolyimides Polyimides displaying low color in thin films, atomic oxygen resistance, vacuum ultraviolet radiation resistance, solubility in organic solvents in the imide form, high glass transition (Tg) temperatures, and high thermal stability are provided. The poly(... | 09/19/2006 |
| 7071291 | Isolation, formulation and shaping of macrocyclic oligoesters Processes for isolating, formulating, and shaping macrocyclic oligesters were developed which allow efficient production of macrocyclic oligoesters substantially free from solvent, which may include additives, fillers, and catalysts. ... | 07/04/2006 |
| 7022806 | Methods for converting linear polyesters to macrocyclic oligoester compositions and macrocyclic oligoesters Macrocyclic oligoesters and compositions comprising macrocyclic oligoesters are prepared from intermediate molecular weight polyesters. In one embodiment, a diol is contacted with a dicarboxylic acid or a dicarboxylate in the presence of a catalyst to produce a comp... | 04/04/2006 |
| 6994914 | Macrocyclic polyester oligomers and processes for polymerizing the same A water slurry process is used to prepare a prepreg and to manufacture articles from macrocyclic polyester oligomers. In one embodiment, a process for preparing a water suspension of macrocyclic polyester oligomers includes the steps of contacting a macrocyclic poly... | 02/07/2006 |
| 6987163 | Modified polybenzimidazole (PBI) membranes for enhanced polymer electrochemical cells The invention relates to a modified polybenzimidazole (PBI), membranes that are fabricated from these polymers, and their use in electrochemical applications. These membranes have high ionic conductivity and are suitable for solid polymer electrolytes in electrochem... | 01/17/2006 |
| 6979721 | Substituted cyclohexene endcaps for polymers with thermal-oxidative stability This invention relates to polyimides having improved thermal-oxidative stability, to the process of preparing said polyimides, and the use of polyimide prepolymers in the preparation of prepregs and composites. The polyimides are particularly useful in the preparati... | 12/27/2005 |
| 6962968 | Purification of macrocyclic oligoesters Acid impurities, such as carboxylic acid-terminated polymers, are removed from macrocyclic oligoesters with ion exchange resins, resulting in macrocyclic oligoesters that are substantially free of acid impurities. The ion exchange resins can be regenerated anew and ... | 11/08/2005 |
| 6960626 | Intimate physical mixtures containing macrocyclic polyester oligomer and filler The invention provides intimate physical mixtures of macrocyclic polyester oligomer (MPO) and filler, as well as methods for their preparation and use. Improved dispersion of filler in a polymer matrix is achieved upon polymerization, and larger amounts of filler wi... | 11/01/2005 |
| 6924348 | Polyamide acid and polyimide, and optical material A polyimide excelling in heat resistance, chemical resistance, water repellency, dielectric characteristics, electrical characteristics, and optical characteristics and a polyamide acid useful as the raw material therefor are provided. Specifically, a polyamide acid... | 08/02/2005 |
| 6919418 | Approach to reduce cyclics formation in 3-CIPA based polyetherimide polymers Methods of reducing the amount of undesirable cyclic oligomer by-products in the production of polyetherimides are disclosed. The resulting polyetherimides have enhanced thermomechanical properties. ... | 07/19/2005 |
| 6916898 | Process for producing polyimide A process of preparing a polyimide of the present invention comprises effecting an imidization reaction of a diamine and a tetracarboxylic dianhydride in a solvent containing 50 to 100% by weight of an equimolar composition of a nitrogen-containing cyclic compound i... | 07/12/2005 |
| 6906147 | Catalytic systems This invention relates to single-component and multi-component catalytic systems using aryl titanates. Aryl titanate compounds are useful as catalysts and co-catalysts in single-component and multi-component catalytic systems (e.g., for the polymerization of macrocy... | 06/14/2005 |
| 6849706 | Copolyetherimides Copolyetherimides comprise phthalimide structural units comprising both 3- and 4-linkages, wherein the designations 3-linkage and 4-linkage refer to the isomeric positions on the phthalimide ring in the totality of phthalimide-comprising structural units in the copo... | 02/01/2005 |
| 6828408 | Aromatic polyimide ester and method for producing thereof An aromatic polyimide ester having a small coefficient of linear expansion, small water absorbing property, and excellent heat resistance. The aromatic polyimide ester comprising: a repeating unit represented by a following formula (I), | 12/07/2004 |
| 6693162 | Polyimide resin and resin composition, adhesive solution, film-state joining component,and adhesive laminate film improved in moisture resistance using it, and production methods therefor The present invention provides a polyimide resin, a resin composition, an adhesive solution, a film-state joining component, and an adhesive laminate film soluble in a solvent having excellent heat resistance and adhesion, capable of bonding and curing at... | 02/17/2004 |
| 6680363 | Process for producing polyimide An acid dianhydride, together with a diamine, is heated in an organic polar solvent in the presence of γ-caprolactone or ଲ-butyrolactone as an acid catalyst to prepare a polyimide having an average molecular weight of 10,000 to 300,000. This produc... | 01/20/2004 |
| 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 |
| 6531568 | Polyimide containing crosslinkable group and process for producing the same This invention provides crosslinkable-group-containing polyimides of various known thermoplastic polyimide backbone structures, which are provided with far better heat resistance, chemical resistance and mechanical properties than known polyimides of the ... | 03/11/2003 |
| 6376644 | Biodegradable polymers chain-extended by phosphates, compositions, articles and methods for making and using the same Biodegradable polymers are described comprising the recurring monomeric units shown in formula I or II: ##STR1## wherein X is --O-- or --NR'--, where R' is H or alkyl; L is a branched or straight chain aliphatic group having from 1-20 carbon atoms; M... | 04/23/2002 |
| 6350817 | Phenylethynyl containing reactive additives Phenylethynyl containing reactive additives were prepared from aromatic diamines containing phenylethynyl groups and various ratios of phthalic anhydride and 4-phenylethynylphthalic anhydride in glacial acetic acid to form the imide in one step or in N-me... | 02/26/2002 |
| 6303743 | Polyimide for optical communications, method of preparing the same, and method of forming multiple polyimide film using the polyimide A polyimide for optical communications, which is expressed by the formula (1), a method of preparing the same, and a method of forming multiple polyimide films using the polyimide, wherein the formula (1) is given by ##STR1## X1, X2,... | 10/16/2001 |
| 6265520 | Solvent soluble polyimide and a method for making thereof Disclosed is a solvent soluble polyimide and a method for making thereof, which characterizes by producing a solvent soluble polyimide with low electric conductivity through the polymerization of an anhydride and a diamine under the condition with or with... | 07/24/2001 |
| 6265521 | Method for preparing polyether polymers of predetermined molecular Polyether polymers such as polyetherimides are prepared by a two-step reaction. The first step is the reaction between an alkali metal salt of a dihydroxy-substituted aromatic hydrocarbon, such as bisphenol A disodium salt, and a substituted aromatic comp... | 07/24/2001 |
| 6245881 | Sulphonated polyimides, membranes and fuel cell The invention relates to sulphonated polyimides, notably of formula (I) ##STR1## The invention also relates to an ion exchange membrane that includes such a polyimide and a fuel cell that includes such a membrane. The membranes of the invention have excel... | 06/12/2001 |
| 6217996 | Aromatic polyimide film and its composite sheet An aromatic polyimide film composed of a biphenyltetracarboxylic acid unit and a phenylenediamine unit, and having a thickness of 5-150 μm and an elongation of 45-90% shows, in combination with an electroconductive film, improved mechanical characteristi... | 04/17/2001 |
| 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 |
| 6166173 | Biodegradable polymers chain-extended by phosphates, compositions, articles and methods for making and using the same Biodegradable polymers are described comprising the recurring monomeric units shown in formula I or II: wherein X is --O-- or --NR'--, where R' is H or alkyl; L is a branched or straight chain aliphatic group having from 1-20 carbon atoms; M1 a... | 12/26/2000 |
| 6103864 | Composition and process for retarding the premature aging of PMR monomer solutions and PMR prepregs The polyimides are derived from solutions of at least one low-boiling organic solvent, e.g. isopropanol containing a mixture of polyimide-forming monomers. The monomeric solutions have an extended shelf life at ambient (room) temperatures as high as 80° ... | 08/15/2000 |
| 6096850 | Polyimides, process for producing the same and photosensitive composition containing the same Polyimide is produced by reacting two kinds of diamine compounds consisting of diaminopolysiloxane and a hydroxyl group-containing diamine or three kinds of diamine compounds consisting of diaminopolysiloxane, a hydroxyl group-containing diamine and an ar... | 08/01/2000 |
| 6090909 | Uv-ray-dimerized high molecular compound, liquid crystal aligning film using above high molecular compound and liquid crystal display element using above aligning film Disclosed is an aligning film having good liquid crystal orientation, which can be obtained by irradiating polyimide comprising N-(2-(3,5-diaminobenzoyl)oxyethyl)--phenylmaleimide and 1,2,3,4-cyclobutanetetracarboxylic dihydride with polarized UV-r... | 07/18/2000 |
| 6031068 | Polyimide composition and base tape for TAB carrier tape and flexible printed circuit board made from said composition The object of the present invention is to provide polyimide composition having such excellent property as low water absorption and low hygroscopic swelling, and a base tape for a TAB carrier tape and a FPC. The another object of the present invention is to pro... | 02/29/2000 |
| 5998569 | Environmentally stable optical filter materials A composition of matter comprising a polyamic acid/ester having an amide pendant group directly substituting an acid site of the polyamic acid is provided, which composition when cured provides a colored polymer film when the amide group is a chromophore.... | 12/07/1999 |
| 5985969 | Polyamic acid precursors and methods for preparing higher molecular weight polyamic acids and polyimidebenzoxazole Polyimide precursor solutions comprise an organic liquid and the reaction product of an aromatic dianhydride and an aromatic diaminobenzoxazole capped, on at least one terminal end, with a bifunctional chain extender. The bifunctional chain extender has o... | 11/16/1999 |
| 5969079 | Oligomers with multiple chemically functional end caps Thermomechanical and thermo-oxidative stabilities in resin composites across the range of aerospace "engineering thermoplastic" resins are improved by forming four crosslinks at each addition polymerization site in the backbone of the resin using crosslin... | 10/19/1999 |
