Joseph M. Vihtelic - Whitehall MI Philip D. Jackson - Muskegon MI Jiri E. Kresta - Warren MI Kurt C. Frisch - Grosse Ile MI
Assignee:
Howmet Research Corporation - Whitehall MI
International Classification:
B22C 702
US Classification:
164516, 164 34, 164 45, 164235
Abstract:
Method of making a shell mold for casting molten metals or alloys involves forming a thermally collapsible, low density reaction injection molded (RIM) thermosetting polyurethane foam pattern having a shape corresponding to the casting to be made. The pattern is formulated to have an aggregate density (pattern outer skin and pattern cellular core) in the range of about 10 to 15 lbs/ft and a smooth continuous as-molded surface devoid of surface connected open cells, dimensional stability over a range of temperatures, and ready, ashless burnout from the shell mold formed thereon without cracking the shell mold. The pattern is free of organometallic catalysts that should not be present in the casting of aerospace superalloys, such as nickel and cobalt base superalloys and titanium. The pattern then is invested without the need for any surface polymer or other film or layer in a shell mold.
Method Of Recycling Scrap Material Containing A Thermoplastic
Girma M. Gebreselassie - Southfield MI Vahid Sendijarevic - Troy MI Qavi Anjum - Detroit MI Daniel Klempner - West Bloomfield MI Kurt C. Frisch - Grosse Ile MI
Assignee:
Lear Corporation - Southfield MI
International Classification:
B29C 4320
US Classification:
264115, 264122, 264911, 264916
Abstract:
The invention involves recycling scrap material having a thermoplastic. The invention includes a method of forming a thermoplastic pre-preg sheet for use in a subsequent molding operation. The method includes shredding a first scrap material having a thermoplastic to form fluff. The fluff has at least about 20 percent weight of thermoplastic. The method further includes sufficiently compacting the fluff into a thermoplastic state sufficient for forming the thermoplastic pre-preg sheet.
Thermoplastic Polyurethane Elastomers (Tpus) Prepared With Polytrimethylene Carbonate Soft Segment
Thomas Forschner - Richmond TX, US Wyndham Boon - North Canton OH, US Aisa Sendijarevic - Troy MI, US Kurt Frisch - Grosse Ile MI, US David Gwyn - Houston TX, US Sally Frisch - Grosse Ille MI, US
Disclosed is a new class of TPUs with improved properties, based on poly(1,3-propanediol carbonate) diol, using 10 to 550 hard segment concentration, and cured with a diisocyanate. The composition provides a broader range of mechanical and thermal properties for TPU formulations, including improvements in hardness, higher elasticity modulus, and improved softening temperature and coefficient of thermal expansion, in addition to improved clarity.
Louis L. Wood - Rockville MD Kurt C. Frisch - Grosse Ile MI
Assignee:
W. R. Grace & Co. - New York NY
International Classification:
C08J 902
US Classification:
521159
Abstract:
The invention disclosed is for new improved hydrophilic crosslinked polyurethane foams prepared by reacting a blend of a monomeric polyol and polyoxyalkylene glycol (the --OH groups of said blend being capped with a polyisocyanate) with large amounts of an aqueous reactant. The resultant foams may be characterized with a broad spectrum of improved properties including hydrolytic stability and tensile strength.
Alger E. Laura - New Boston MI Ronald J. Easton - Clio MI Kurt C. Frisch - Grosse Ile MI Han X Xiao - Farmington Hills MI
Assignee:
A-Line Products Corporation - Detroit MI
International Classification:
B32B 2738
US Classification:
428413
Abstract:
A water-based coating composition and methods of making and using the same are disclosed. The composition includes a halogenated resin, a polyol, a surfactant, and an amine. It is suitable for coating a variety of substrates including polyolefinic substrates such as polypropylene, and operates without aromatic organic solvents.
Powder Coating Compositions Based On A Cyclic Nitrile Compound
Kurt Charles Frisch - Grosse Ile MI Donald Henry Russell - Cherry Hill NJ
Assignee:
Atlantic Richfield Company - Los Angeles CA
International Classification:
C08G 1804 C08G 7102 B05D 106
US Classification:
260 775B
Abstract:
A shelf-stable polymer-producing coating powder composition is presented comprised of a cyclic nitrile compound and an organic compound containing at least two carboxyl or carboxylic acid anhydride groups or at least one carboxyl group and one carboxylic anhydride group, and a condensation-rearrangement catalyst. The preferred cyclic nitrile compounds are the cyclic nitrile carbonates, for example, adipodi(nitrile carbonate), and the preferred organic compounds are anhydride-containing polymers, for example, styrene-maleic anhydride copolymer. The coating powder composition preferably has a particle size of about 50 to 250 microns.
Polyurethane-Based Lacquer Binders Prepared From Tris-(.Beta.-Hydroxypropyl-Isocyanurate
Kurt C. Frisch - Detroit MI Daniel M. J. Tummers - Geleen, NL Anne Te Nijenhuis - Geleen, NL
Assignee:
Stamicarbon, B.V. - Geleen
International Classification:
C08G 1832
US Classification:
528 60
Abstract:
Single-component or two part polyurethane-based lacquers are prepared on the basis of a polymeric polyhydroxy compound having a high molecular weight in the range of 300 to 5000, such as poly(oxytetramethylene)glycol, a low molecular weight diol such as ethylene glycol, at least one isocyanate such as toluene diisocyanate and tris-(. beta. -hydroxypropyl)-isocyanurate or its ethoxylated derivative together with the customary accelerators, additives, solvents and the like used in lacquer manufacture. These lacquers exhibit exceptional hardness, high impact resistance, good adhesion to the substrate to which they are applied as well as corrosion resistance.
Harold Porosoff - Scarsdale NY Balwant Singh - Stamford CT Kurt C. Frisch - Grosse Ile MI
Assignee:
American Cyanamid Company - Stamford CT
International Classification:
C08G 1814
US Classification:
521159
Abstract:
Novel rigid polyurethane and/or polyisocyanurate foams are disclosed which have fine cell structure, low K-factor, and flame retardance. These foams are prepared by the reaction of a polyisocyanate with heterocyclic nitrogen containing polybeta-hydroxy urethane functional polyols which act as chemically bound flame retardants. Also disclosed are novel modified poly-beta-hydroxyalkyl carbamylalkylated heterocyclic nitrogen containing polyols useful for the formation of rigid foams.
Isbn (Books And Publications)
Polymer Alloys: Blends, Blocks, Grafts, And Interpenetrating Networks