Celebrity Inventors
Glam girl Heddy Lamar may have used her good looks to good effect on the silver screen, but she put her smarts to better use as an inventor. During World War II, she co-patented a frequency-switching system for torpedo guidance that was considered years ahead of its time.
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| Number | Title | Issue Date |
| 7745548 | Polyoxymethylene homopolymers and copolymers, and production and use thereof Homo- or copolyoxymethylenes are described and contain the repeat structural unit of formula I -A-O—R1—O—CO—(R2—CO—)m—O— (I), where A is a radical derived from a homo- or copolyoxymethylene, | 06/29/2010 |
| 7687584 | Miscible transparent blends of aromatic polycarbonates with polycarbonate polymers containing high-aspect ratio monomers The present invention relates to a miscible transparent polymer blend, specifically, a polycarbonate blend which comprises homopolycarbonates and/or copolycarbonates. In particular, high aspect ratio monomers confer unique miscibility properties on polycarbonates. M... | 03/30/2010 |
| 7408014 | Steroid lipid-modified polyurethane as an implantable biomaterial, the preparation and uses thereof A modified polyurethane including a lipid substituent pendant from at least one urethane nitrogen and/or at least one carbon atom of the modified polyurethane, methods of preparing modified polyurethanes and the use thereof as an implantable biomaterial. ... | 08/05/2008 |
| 7365124 | Flame retardant resin blends based on polymers derived from 2-hydrocarbyl-3,3-bis(4-hydroxyaryl)phthalimidine monomers A polymer blend consisting essentially of at least one thermoplastic polymer, and a polymer comprising structural units derived from a 2-hydrocarbyl-3,3-bis(4-hydroxyaryl)phthalimidine is disclosed. ... | 04/29/2008 |
| 7166687 | Translucent thermoplastic composition, method for making the composition and articles molded there from A thermoplastic composition comprising a matrix of a polycarbonate polymer in which are embedded polysiloxane domains with an average domain size between 20 and 45 nanometers. Said compositions can be obtained by combining a first polycarbonate/poly(diorganosiloxane... | 01/23/2007 |
| 7052747 | Birefringent optical film, elliptically polarizing plate using the same, and liquid crystal display using the same The present invention provides a birefringent optical film having a high orientation for easily obtaining a desired retardation value and also a small photoelastic coefficient. The birefringent optical film includes at least two kinds of polymer materials. A total o... | 05/30/2006 |
| 6897265 | Polyester coil coating A coil coating composition producing a coil coating with excellent properties at a lower peak metal temperature includes (a) a first, branched polyester prepared by condensation of a polyol component consisting essentially of a flexibilizing diol, 2-methyl-1,3-propa... | 05/24/2005 |
| 6800697 | Process for producing retardation film In the present invention, a retardation film is produced by adjusting the mixing ratio of at least two kinds of mutually compatible polymers A and B and by forming the resulting mixture into the film. The polymers A and B are copolymers comprising respective two com... | 10/05/2004 |
| 6740714 | Polycarbonate blends A thermoplastic molding composition suitable for making articles having good combination of properties is disclosed. The composition contains (A) a copolycarbonate derived from compounds of formula (I) wherein R | 05/25/2004 |
| 6730748 | Thermoplastic polycarbonate compositions having high toughness A thermoplastic molding composition that features improved low-temperature properties and is thus suitable for application in exterior automotive parts is disclosed. The composition contains (A) 80 to 60 percent of a copolycarbonate wherein 65 to 75 mole percent of ... | 05/04/2004 |
| 6716957 | Bioabsorbable materials and medical devices made therefrom A bioabsorbable material such as a terpolymer of poly-(L-lactide/D-lactide/glycolide). The material may consist of 85 molar percent L-lactide, 5 molar percent D-lactide, and 10 molar percent glycolide. The material may have a heat of fusion of about 15-25 J/G, tensi... | 04/06/2004 |
| 6462146 | Polycarbonate blends and method of making same Copolymers of BPA and menthane bisphenols such as BPT1 and BPT2 can be used as a compatabilizer to allow the formation of homogeneous blends of BPA with menthane bisphenol polycarbonates such as poly-BPT1 or poly-BPT2 or copolymers thereof. Thus, a compat... | 10/08/2002 |
| 6037437 | Method for producing an aromatic polycarbonate A method for producing an aromatic polycarbonate which comprises subjecting to a transesterification polymerization reaction at least one polymerizable material selected from a molten monomer mixture of an aromatic dihydroxy compound and a diaryl carbonat... | 03/14/2000 |
| 5936047 | Molecular weight control The weight average molecular weight of a polycarbonate resin is predictably reduced by reaction with a multifunctional aliphatic compound at a temperature of 250 C. to 350 C.... | 08/10/1999 |
| 5863992 | Tetraphenols and their use as polycarbonate branching agents Branched polycarbonates having properties suitable for blow molding are prepared by equilibrating a linear or branched aromatic polycarbonate with certain tetraphenols, especially 2,2,5,5-tetrakis (4-hydroxyphenyl)hexane and 1,1-bis(p-hydroxyphenyl)ethy... | 01/26/1999 |
| 5804673 | Blend of branched and linear carbonate polymer resins Improved branched carbonate polymer blend compositions are prepared comprising a branched carbonate polymer component and a different linear carbonate polymer component. The branched carbonate polymers according to the invention are especially suitable fo... | 09/08/1998 |
| 5759689 | Coextruded polycarbonate sheet with improved weathering A compound of the formula: ##STR1## is blended with a polycarbonate resin to obtain an ultra-violet light degradation resistant article.... | 06/02/1998 |
| 5672664 | Color improved polycarbonate compositions and molded articles A thermoplastic molding composition including at least one polycarbonate resin which is a polycarbonate homopolymer or copolymer; and an amount of at least one tetrahalobisphenol A copolymer effective to reduce the yellowness index of the at least one pol... | 09/30/1997 |
| 5652312 | Redistribution of organic polyestercarbonate compositions Polyestercarbonates, particularly those containing aliphatic dicarboxylic acid-derived structural units, are redistributed by heating in the presence of a carbonate redistribution catalyst, and, optionally, a diaryl carbonate. The redistribution products ... | 07/29/1997 |
| 5650470 | Polycarbonate redistribution using diethyldimethylammonium hydroxide as catalyst Polycarbonate compositions are redistributed by melt equilibration using diethyldimethylammonium hydroxide as the redistribution catalyst. This catalyst affords an odorless polycarbonate product having a very low residual amine level.... | 07/22/1997 |
| 5633331 | Blends of polysulfone with diaryl fluorene carbonate polymer Polymer blend compositions are prepared having excellent combinations of optical properties, physical properties and hydrolytic stability comprising, in admixture, (a) a diaryl fluorene carbonate polymer and (b) a polysulfone. Preferably, the diaryl carbo... | 05/27/1997 |
| 5633060 | Optical disk substrate, optical disk and aromatic polycarbonate resin An optical disk substrate formed substantially of an aromatic polycarbonate from an aromatic dihydroxy component containing at least 20 mol % of 1,1-bis(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane, wherein: (A) the aromatic polycarbonate has a specific viscosi... | 05/27/1997 |
| 5567802 | Polycarbonate redistribution method employing phosphonium hydroxides Polycarbonate compositions are redistributed by melt equilibration using as the redistribution catalyst a tetraorganophosphonium hydroxide, preferably a tetra-(C1-6 alkyl)phosphonium hydroxide. Such catalysts have numerous advantages including ... | 10/22/1996 |
| 5552224 | Carbonate blend polymer compositions comprising a high molecular weight branched carbonate polymer component and methods for their preparation Novel carbonate polymer blend compositions and processes for their preparation are disclosed where an amount of a high molecular weight branched carbonate polymer component (HMWB PC) is combined with a second, lower molecular weight polycarbonate. A HMWB ... | 09/03/1996 |
| 5521275 | Method for improving catalyst efficiency during polycarbonate redistribution The efficiency of a redistribution catalyst during polycarbonate redistribution is improved by employing an extruder screw design that provides a melt seal between the extruder throat and the vacuum port. A melt seal exists when the free volume within the... | 05/28/1996 |
| 5508359 | Blends of high MW branched polycarbonate with a lower MW polycarbonate Improved injection molded thin-wall corner parts are prepared using carbonate polymer blend compositions where an amount of a higher molecular weight branched carbonate polymer component (HMWB PC) is combined with a different second, lower molecular weigh... | 04/16/1996 |
| 5486577 | Blends of diaryl fluorene carbonate polymers with bisphenol A carbonate polymers Carbonate polymer compositions are prepared comprising a first diaryl fluorene carbonate polymer component and a second bisphenol A carbonate polymer component, the blend composition preferably comprising from about 1 to about 99 weight percent diaryl flu... | 01/23/1996 |
| 5455310 | Compositions of siloxane polycarbonate block copolymers and high heat polycarbonates A thermoplastic composition which comprises a siloxane polycarbonate block copolymer wherein the polysiloxane segments of the copolymer are of the formula: ##STR1## where R1, R2, Y, D, A, X, A' and E are as defined herein, and ... | 10/03/1995 |
| 5414057 | Redistribution of organic polycarbonate compositions A process for the redistribution of an organic polycarbonate composition. The process involves melt equilibrating a starting polycarbonate composition (which may be a single polycarbonate or a mixture of polycarbonates, and may be or include recycled poly... | 05/09/1995 |
| 5401813 | Transparent polycarbonate PBT blends Thermoplastic molding compositions containing (i) polybutylene terephthalate (ii) a first aromatic polycarbonate resin, and (iii) a second aromatic polycarbonate resin are disclosed. A high level of Total Light Transmission (herein TLT) is a key characteristic of t... | 03/28/1995 |
| 5389713 | Polycarbonate resin compositions Polycarbonate resin compositions methods for their preparation are disclosed. The disclosed compositions are comprised of polycarbonate resins and -olefin oligomers and exhibit good mold release and thermal stability while experiencing little disco... | 02/14/1995 |
| 5376736 | Transparent polycarbonate PET blends Thermoplastic molding compositions are disclosed containing (i) about 1 to 89% polyethylene terephthalate (ii) about 10 to 89% of a first aromatic polycarbonate (PC1) and (iii) about 1-89% of the second aromatic polycarbonate (PC2). PC2 is a copolycarbona... | 12/27/1994 |
| 5357027 | Polycarbonate resin composition Disclosed is a novel polycarbonate which has (1) a repeating unit (I) represented by the general formula: ##STR1## and a repeating unit (II) represented by the formula: ##STR2## (all the symbols are as defined in the claims); (2) a trihalogenophenoxy... | 10/18/1994 |
| 5310827 | Polyamide copolymers Novel polyamide copolymers having skeletons of a specific structure are disclosed. The polyamide copolymers have excellent resistance to hydrolysis, low temperature characteristics (low temperature softness), heat aging resistance and mechanical propertie... | 05/10/1994 |
| 5308489 | Blends of polyether copolycarbonates and high molecular weight film-forming thermoplastics The invention relates to blends of polyether copolycarbonates and other thermoplastics, to their production and to their use for the production of membranes, more particularly for dialysis.... | 05/03/1994 |
| 5284921 | Preparation of poly(arylether/thioether) segmented block copolymers Block copolymers comprising activated aromatic ether or thioether repeat units having utility as molding resins are prepared by contacting polymers comprising different activated aromatic ether or thioether repeat units in the presence of an exchange cata... | 02/08/1994 |
| 5260129 | Polyether/polycarbonate block copolymer coatings for plastic moldings An article of manufacture having a hydrophilic coating is disclosed. To the article which may be made of a thermoplastic or from a thermoset resin there is applied a coating which comprise a segmented, aliphatic-aromatic polyether block copolycarbonates c... | 11/09/1993 |
| 5196245 | Irradiation resistant functionally encapped polycarbonate Thermoplastic articles molded from polycarbonate resin blends which comprise a polycarbonate resin encapped with a monovalent moiety of the formula: ##STR1## wherein R1 is selected from hydrogen and hydrocarbyl and each R2 ... | 03/23/1993 |
| 5173543 | Thermoplastic elastomers In thermoplastic elastomers selected from the group consisting of the thermoplastic polyurethanes, of the polyetheresters and of the polyetheramides which are derived from polyetherpolycarbonatediols as diol components, the polyetherpolycarbonatediols use... | 12/22/1992 |
| 5169907 | Polyether/polycarbonate block copolymers and a process for their production A block copolymer represented by the formula ##STR1## are formed by contracting an ester group containing poly(aryl ether) composed of the recurring units ##STR2## with a polyarylcarbonate composed of the recurring units ##STR3## in wh... | 12/08/1992 |
