Method for converting cyclic polycarbonate oligomer mixtures to linear polycarbonate, and composition resulting therefrom
What is claimed is: 1. A method for preparing a resinous composition which comprises contacting with a polycarbonate formation catalyst, at a temperature up to about 350.degree. C., a composition cons... Read More
Inventors: Brunelle, Daniel J.; Evans, Thomas L.; Vallance, Michael A.; Stewart, Kevin R.; Shannon, Thomas G.; Williams, David A.; Patterson, Dwight J.; Rosenquist, Niles R.; Hilakos, William;, Assignee: General Electric Company (Schenectady, NY) |
Cyclic polycarbonate oligomers: inhibition and control of polymerization to linear polycarbonates
What is claimed is: 1. A method for stabilizing a composition consisting essentially of cyclic polycarbonate oligomers which comprises incorporating therein about 0.1-0.5 mole percent, based on struct... Read More
Inventors: Evans, Thomas L.; Berman, Carol B.;, Assignee: General Electric Company (Schenectady, NY) |
Cyclic polycarbonate oligomers: inhibition and control of polymerization to linear polycarbonates
What is claimed is: 1. A composition prepared by blending a basic polycarbonate formation catalyst and at least about 0.5 mole, per mole of said catalyst, of a Lewis acid of the formula ##STR4## where... Read More
Inventors: Evans, Thomas L.; Berman, Carol B.;, Assignee: General Electric Company (Schenectady, NY) |
Bischoloroformate preparation method with phosgene removal and monochloroformate conversion
What is claimed is: 1. In a method for preparing aromatic bischloroformate compositions which comprises reacting a dihydroxyaromatic compound with phosgene in the presence of an aqueous alkali or alka... Read More
Inventors: Brunelle, Daniel J.; Shannon, Thomas G.;, Assignee: General Electric Company (Schenectady, NY) |
Method for preparing preforms for molding processes
OF THE INVENTION Any thermosettable resinous compound which is compatible with the thermosettable composition to be employed in the subsequent molding process in which the preform is to be employed i... Read More
Inventors: Heck, Henry G.; White, Warren D.;, Assignee: The Dow Chemical Company (Midland, MI) |
Method for preparing copolyestercarbonates from cyclic oligomers
What is claimed is: 1. A method for preparing a copolyestercarbonate which comprises contacting at least one cyclic polycarbonate oligomer with at least one cyclic polyester oligomer in the presence o... Read More
Inventors: Guggenheim, Thomas L.; Fukuyama, James M.; Kelly, John J.;, Assignee: General Electric Company (Schenectady, NY) |
Method for preparing and polymerizing macrocyclic poly(alkylene discarboxylate) oligomers
What is claimed is: 1. A method for preparing a macrocyclic polyester oligomer composition comprising structural units of the formula ##STR4## wherein R is an alkylene or mono- or polyoxyalkylene radi... Read More
Inventors: Brunelle, Daniel J.; Bradt, Jean E.;, Assignee: General Electric Company (Schenectady, NY) |
Cyclic polycarbonate oligomer containing spiro diLactam moieties
What is claimed is: 1. A cyclic polycarbonate oligomer having a first repeating segment of the formula VI ##STR9## and with or without up to twice the molar quantity in the cyclic chain of the first s... Read More
Inventors: Wang, Pen-Chung;, Assignee: Shell Oil Company (Houston, TX) |
Coating composition for fibers
OF INVENTION The present invention is useful with any glass fiber conventionally utilized for the reinforcement of polymeric resins. The term "glass fibers" as used herein means filaments formed by a... Read More
Inventors: Flautt, Martin C.; Adzima, Leonard J.;, Assignee: Owens-Corning Fiberglas Corporation (Toledo, OH) |
Preparation of branched polycarbonate composition from cyclic aromatic polycarbonate oligomer, polyhydric phenol and polycarbonate
OF THE INVENTION The branched polycarbonate compositions obtained according to the method of this invention contain structural units of formula (I) ##STR4## wherein a is a number in the range of abou... Read More
Inventors: Krabbenhoft, Herman O.; Boden, Eugene P.;, Assignee: General Electric Company (Schenectady, NY) |
Method for the manufacture of polymer products from cyclic esters
OF THE INVENTION The cyclic esters which are polymerized by a catalyst according to the invention can be chosen from, for example, lactones such as lactide, glycolide, .epsilon.-caprolactone, dioxano... Read More
Inventors: van den Berg, Hendrik J.;, Assignee: DSM N.V. (Geleen, NL) |
Control cable
The control cable of the present invention comprises a conduit having flexibility, inside surface of which being fitted with a liner, and an inner cable having an inner coat, which is inserted into th... Read More
Inventors: Mizobata, Shinji; Furukawa, Haruhiko;, Assignee: Nippon Cable System, Inc. (Hyogo, JP); Dow Corning Toray Silicone Co., Ltd. (Tokyo, JP) |
Preparation of polycarbonate with subsequent addition of chain terminator and base
OF THE INVENTION In the process of this invention--the process for making the polycarbonate of this invention--polycarbonate can be prepared by the reaction of a dihydroxy compound and a carbonate pr... Read More
Inventors: Munjal, Sarat; Wardlow, Thomas M.; Hall, Andrew F.;, Assignee: The Dow Chemical Company (Midland, MI) |
Macrocyclic polyester oligomer preparation with Lewis acid as catalyst
What is claimed is: 1. A method for preparing a cyclic poly(alkylene dicarboxylate) oligomer composition which comprises contacting at least one dicarboxylic acid chloride of the formula ##STR3## with... Read More
Inventors: Brunelle, Daniel J.;, Assignee: General Electric Company (Schenectady, NY) |
Process for making thermoplastic polyester foams
OF THE PREFERRED EMBODIMENTS The macrocyclic polyester oligomer precursors employed in the instant invention are preferably macrocyclic poly(alkylene dicarboxylate) oligomers comprising structural un... Read More
Inventors: Pearce, Eric J.; Carbone, John W.;, Assignee: General Electric Company (Schenectady, NY) |
Trisstannoxanes useful for polymerizing macrocyclic poly(alkylene dicarboxylate) oligomers
PREFERRED EMBODIMENTS In the trisstannoxanes of formula I, each R.sup.3 is a C.sub.1-10 alkyl radical, preferably a primary alkyl radical such as methyl, ethyl, n-butyl, n-hexyl, n-octyl, 2-ethylhexy... Read More
Inventors: Takekoshi, Tohru; Pearce, Eric J.;, Assignee: General Electric Company (Schenectady, NY) |
Method for polymerizing macrocyclic poly(alkylene dicarboxylate) oligomers
What is claimed is: 1. A method for preparing a polyester which comprises contacting at least one macrocyclic polyester oligomer comprising structural units of the formula ##STR6## wherein R.sup.1 is ... Read More
Inventors: Takekoshi, Tohru; Pearce, Eric J.;, Assignee: General Electric Company (Schenectady, NY) |
Method of preparing aliphatic-aromatic polycarbonates
What is claimed is: 1. A method of preparing aliphatic-aromatic polycarbonate resin having a weight average molecular weight of 9,000 to 190,000 comprising (a) reacting at a temperature of 160.degree.... Read More
Inventors: Haese, Wilfried; Pakull, Ralf; Fennhoff, Gerhard; Kirsch, Jurgen;, Assignee: Bayer Aktiengesellschaft (Leverkusen, DE) |
Process for isolating macrocyclic polyester oligomers
OF THE PREFERRED EMBODIMENTS The macrocyclic polyester oligomer employed in the instant invention are preferably macrocyclic poly(alkylene dicarboxylate) oligomers comprising structural units of the ... Read More
Inventors: Warner, Gregory L.; Wilson, Paul R.; Bradt, Jean E.;, Assignee: General Electric Company (Schenectady, NY) |
Polymerization of macrocyclic poly(alkylene dicarboxylate) oligomers
What is claimed is: 1. A method for converting a mixture consisting essentially of macrocyclic polyester oligomers comprising structural units of the formula ##STR4## wherein R is an alkylene or mono-... Read More
Inventors: Evans, Thomas L.; Brunelle, Daniel J.; Bradt, Jean E.; Pearce, Eric J.; Wilson, Paul R.;, Assignee: General Electric Company (Schenectady, NY) |
Method for polymerizing macrocyclic poly(alkylene dicarboxylate) oligomers
; PREFERRED EMBODIMENTS The macrocyclic polyester oligomers which are polymerized according to this invention may be prepared by contacting at least one diol of the formula HO--R.sup.1 --OH and at lea... Read More
Inventors: Takekoshi, Tohru; Pearce, Eric J.;, Assignee: General Electric Company (Schenectady, NY) |
Method for modifying the backbone of polymeric resins
OF THE INVENTION Shown below are schematic representations of the inventive process: polycarbonate being but a representative of the resins which may thus be modified and cyclic oligocarbonate repres... Read More
Inventors: Priddy, Jr., Duane B.; Kumpf, Robert J.;, Assignee: Bayer Corporation (Pittsburgh, PA) |
Process for producing high ductile polyesters
OF THE PREFERRED EMBODIMENTS The macrocyclic copolyester oligomers employed in this invention are generally not limited to any class; however, they are often those of the family consisting of polymer... Read More
Inventors: Brunelle, Daniel Joseph;, Assignee: General Electric Company (Schenectady, NY) |
Method for producing polyesters
OF THE PREFERRED EMBODIMENTS The macrocyclic polyester oligomers which may be employed in this invention are not limited and preferably macrocyclic poly(alkylene dicarboxylate) oligomers comprising s... Read More
Inventors: Todt, Michael Leslie; Carbone, John William;, Assignee: General Electric Company (Schenectady, NY) |
Method for modifying the backbone of polymeric resins
OF THE INVENTION Shown below are schematic representations of the inventive process; polycarbonate being but a representative of the resins which may thus be branched. In the context of the present i... Read More
Inventors: Priddy, Jr., Duane B.; Kohler, Burkhard; Kumpf, Robert J.; Pielartzik, Harald;, Assignee: Bayer Corporation (Pittsburgh, PA); Bayer Aktiengesellschaft (Leverkusen, DE) |
Layered minerals and compositions comprising the same
OF THE PREFERRED EMBODIMENTS There is no limitation with respect to the layered minerals employed in this invention other than that they are capable of undergoing a cation exchange with the cations a... Read More
Inventors: Takekoshi, Tohru; Khouri, Farid Fouad; Campbell, John Robert; Jordan, Therese Coste; Dai, Kevin Hsingtao;, Assignee: General Electric Company (Schenectady, NY) |
Polyesters
I claim: 1. A composition comprising a mixture of cyclic polyester oligomers having different numbers of repeat units, wherein the mixture comprises at least one cyclic polyester oligomer containing 1... Read More
Inventors: Hodge, Philip; Semlyen, Joseph Anthony; Harrison, Anthony Garry;, Assignee: Imperial Chemical Industries PLC (GB) |
Mixtures of cyclic oligocarbonates and their manufacture
What is claimed is: 1. A process for the manufacture of cyclic oligocarbonate comprising a reaction of (a) bis-chlorocarbonic acid ester of the formula ##STR6## where Ar is a C.sub.6-30 -difunctional ... Read More
Inventors: Kohler, Burkhard; Priddy, Jr., Duane B.; Chen, Yun; Pielartzik, Harald; Kumpf, Robert-Joseph;, Assignee: Bayer Aktiengesellschaft (Leverkusen, DE); Bayer Corporation (Pittsburgh, PA) |
Process for electrostatically painting polymers containing a non-volatile metal salt conductivity inducing material
What is claimed is: 1. A process for electrostatically painting cured urea polymers and/or urethane-group containing polymers comprising the steps of: (A) preparing a polymer from a polymer, formulati... Read More
Inventors: Carswell, Robert; Cornell, Marty C.; Groseth, Cynthia K.; Porter, James R.; Priester, Jr., Ralph D.; Tabor, Ricky L.; Zawisza, Melissa J.;, Assignee: The Dow Chemical Company (Midland, MI) |
Article having a water-repellent fluororesin surface, and method for manufacturing the same
I claim: 1. An article having a water-repellent fluororesin surface, wherein the fluororesin surface has a water droplet roll angle tangent of no more than 50/500 and being composed of an irregularly ... Read More
Inventors: Saito, Takumi;, Assignee: DuPont-Mitsui Fluorochemicals Co., Ltd. (JP) |
Manufacturing Materials 
