Patents Examined by P. C. Ives
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Patent number: 4208464Abstract: A coated article comprising a metal support and a baked layer of a water soluble heat-resistant insulating varnish containing a resin comprising ester groups and imide rings in the molecule dissolved in water using a volatilizable basic compound, the resin comprising the reaction product of(A) a carboxyl-containing polyesterimide resin having an acid value of about 30 to 150 obtained by reacting (a) a polyhydric alcohol component comprising at least one organic polyhydric alcohol and containing about 10 to 60 mol % of an imide ring-containing glycol of the general formula (I): ##STR1## wherein R.sub.1 is a trivalent aromatic group, R.sub.Type: GrantFiled: May 2, 1978Date of Patent: June 17, 1980Assignee: Nitto Electric Industrial Co., Ltd.Inventors: Takashi Ishizuka, Naoki Miwa
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Patent number: 4207363Abstract: A heat-shrinkable multilayer film suitable for use in the packaging of primal meat cut, includes a first outer layer comprising a blend of a propylene-ethylene copolymer, a (butene-1)-ethylene copolymer, and a thermoplastic elastomer selected from the group consisting of ethylene-propylene copolymers and ethylene-propylene diene terpolymers; a first core layer connected to the first outer layer and being capable of being stretched during the biaxial orientation of the multilayer film and comprising an extrudable adhesive; a second core layer connected to the first core layer and serving as an oxygen barrier to protect the meat cut from spoilage and being compatible to the biaxial orienting and heat shrinking of the film; and a second outer layer comprising an ethylene vinyl acetate copolymer; the multilayer film being biaxially oriented.Type: GrantFiled: March 29, 1978Date of Patent: June 10, 1980Assignee: Union Carbide CorporationInventors: Stanley Lustig, John Anthony
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Patent number: 4207379Abstract: This invention relates to an improvement in a substrate web coated with a thermosetting coating resin and optionally impregnated with an aminoplast resin, in particular a web of paper, for the surface finishing of woodwork panels or laminates, the improvement that the coating resin is a modified polyester resin, composed of (a) 60 to 95% by weight of a hardenable polyester resin, (b) 1 to 15% by weight of a cross-linking agent for the polyester resin, (c) 5 to 40% by weight of a thermoplastic containing predominantly linear, high-molecular weight, reactive groups, (d) 1 to 15% by weight of a monomer with at least one polymerizable double bond and at least one group which reacts with the reactive group of the thermoplastic, and (e) a hardening catalyst, and optionally dyes, pigments and/or fillers. The invention also relates to a process for preparing a synthetic resin coated substrate web.Type: GrantFiled: July 31, 1978Date of Patent: June 10, 1980Assignee: Th. Goldschmidt AGInventors: Jurgen Fock, Eckehard Schamberg, Werner Schafer
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Patent number: 4204028Abstract: An electroconductive film comprising the oxides of cobalt and nickel in a spinel structure having the formula NiCo.sub.2 O.sub.4 and having high absorption in the luminous and infrared portions of the solar energy spectrum is disclosed.Type: GrantFiled: March 16, 1978Date of Patent: May 20, 1980Assignee: PPG Industries, Inc.Inventor: Harold E. Donley
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Patent number: 4204030Abstract: Novel and improved paperboards useful for making gypsum wallboards, which are sized with a specific organopolysiloxane comprising mercaptoalkyl containing organosiloxane units and, optionally, methacryloxy-containing organosiloxane units in its molecular structure. The sizing compound is used in a relatively small amount and yet can exhibit an excellent effect within a very short time. The sized paperboards have adequately controllable moisture absorption as well as air permeability. They are used to cover or sandwitch a gypsum core to form a complete wallboard in a convenient and economical manner.Type: GrantFiled: September 28, 1977Date of Patent: May 20, 1980Assignees: Shin-Etsu Chemical Co. Ltd., Yoshino Gypsum Co. Ltd.Inventors: Minoru Takamizawa, Akira Abe, Yoshiaki Ono, Yutaka Sugimori, Tetsuo Kishibayashi, Makoto Ino
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Patent number: 4202923Abstract: This invention relates to an improvement in a drawing layer for a plastic film, in particular for a polyester film, said drawing layer being adherent to the film and comprising a cellulose ester crosslinked by a formaldehyde resin, and including a matt-finishing agent and/or a pigment, the improvement which comprises that the drawing layer additionally contains at least one copolymer containing maleic anhydride units.Type: GrantFiled: December 15, 1977Date of Patent: May 13, 1980Assignee: Hoechst AktiengesellschaftInventor: Klaus Thoese
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Patent number: 4202925Abstract: An adhesive tape which includes an acrylic pressure sensitive adhesive mass coated on one side of a saturated paper, said paper (1) being saturated with from 20 to 75 parts per hundred parts paper of an acrylic polymer having a T.sub.g of less than 20.degree. C., and (2) comprising a mixture of woodpulp and thermoplastic fibers, said woodpulp comprising from about 10 to 75% by weight of the paper, and said thermoplastic fibers ranging in length, on the average, from about 1/4 to 3/4 of an inch and being selected from the group consisting of polyamide, polyester, polypropylene and polyethylene fibers, and a backsize coated on the other side of said paper, said backsize preferably being selected from the group consisting of styrene copolymers having a T.sub.g of at least 35.degree. C., silicones, fluorocarbons, long chain fatty acids, long chain fatty acid derivatives and mixtures thereof.Type: GrantFiled: April 4, 1978Date of Patent: May 13, 1980Assignee: Johnson & JohnsonInventor: Winifred C. Dabroski
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Patent number: 4201835Abstract: A binder for cellulose fiber reinforced board material comprising a mixture of:(a) a weakly alkaline phenol-formaldehyde condensate resin with a phenolic compound to formaldehyde mol ratio of 1:1.5 to 1:3.0, preferably of 1:1.8 to 1:2.7, and with an alkali content of .ltoreq. 15% by weight NaOH or KOH, related to the solids content of the resin;(b) a di- and/or poly-functional isocyanate in a quantity of from 5% to 25% by weight, related to (a); and(c) a tertiary alkyl and/or aralkyl amine and/or alkylenpolyamine in a quantity of from 0.1% to 5% by weight, related to (a).a boiling water and weather resistant board material containing said binder and a process for the production of said board material are disclosed.Type: GrantFiled: March 28, 1978Date of Patent: May 6, 1980Assignee: Rutgerswerke AktiengesellschaftInventors: Karl Jellinek, Rolf Muller
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Patent number: 4199632Abstract: For added strength and efficiency, the handles of impact or striking implements are weighted near their striking ends by the addition thereto of carefully pre-weighed supplemental veneers intervened with main veneers or by providing in a solid handle blank a head portion of increased thickness prior to compression. The mass of the handle at the striking end is effectively increased.Type: GrantFiled: June 16, 1976Date of Patent: April 22, 1980Inventor: Charles F. Travis
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Patent number: 4198256Abstract: A heat-sealable oriented plastic film comprising an oriented polypropylene film having on at least one surface a heat-sealable layer comprising a predominantly linear random copolymer of ethylene and up to 12 mole percent of at least one further alpha-olefin having at least three carbon atoms per molecule.Type: GrantFiled: February 9, 1978Date of Patent: April 15, 1980Assignee: British Cellophane LimitedInventors: William J. Andrews, William J. M. Philpott
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Patent number: 4196253Abstract: Disclosed are (1) coated paper comprising a paper substrate having adhered to at least one surface thereof a coating composition comprised of a binder material and an organic pigment, and (2) a paper product comprised of cellulosic fibers and an organic pigment, the organic pigment being essentially uniformly dispersed throughout the paper product. The organic pigments employed are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, and a water-soluble nonionic or anionic prepolymer in aqueous media and in the presence of a free-radical polymerization initiator.Type: GrantFiled: May 18, 1978Date of Patent: April 1, 1980Assignee: Hercules IncorporatedInventor: Gavin G. Spence
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Patent number: 4196240Abstract: A heat-shrinkable multilayer film suitable for use in the packaging of a frozen poultry, includes a first outer layer comprising a blend of propylene-ethylene copolymer having a high isotactic molecular structure with less than about 6% by weight being ethylene and having a melt flow of from about 1.5 to about 18 decigrams per minute; a (butene-1)-ethylene copolymer having a high isotactic molecular structure with less than about 10% by weight ethylene and having a melt flow of from about 0.1 to about 5.0 decigrams per minute, and a thermoplastic elastomer selected from the group consisting of ethylene-propylene copolymers and ethylene-propylene diene terpolymers, the ratio by weight of the propylene-ethylene copolymer to the (butene-1)-ethylene copolymer being from about 2:1 to about 1:2 and the thermoplastic elastomer being present from about 10% to about 50% by weight, and a second outer layer comprising an ethylene-(butene-1) copolymer having a melt flow of from about 0.1 to about 1.Type: GrantFiled: January 18, 1978Date of Patent: April 1, 1980Assignee: Union Carbide CorporationInventors: Stanley Lustig, Stephen J. Vicik, William J. Kohler
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Patent number: 4196254Abstract: A pressure-sensitive adhesive tape having a polyolefin, polyester or metal foil backing and an acrylate pressure-sensitive adhesive layer firmly adhered to the backing through a primer layer comprising a primer composition consisting essentially of an intimate mixture of a primary amino-functional trialkoxy silane and a particular carboxylated polymer component having an affinity for the acrylate adhesive. The primer composition and the silane are distributed in the primer layer in amounts of at least about five milligrams per square yard primer composition and at least about one milligram per square yard silane, and the weight ratio of silane to carboxylated polymer component is between about 1 to 10 and about 4 to 1.Type: GrantFiled: May 5, 1978Date of Patent: April 1, 1980Assignee: Johnson & JohnsonInventor: Frank Puskadi
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Patent number: 4196247Abstract: A flexible heat sealable packaging material including a flexible web of substrate material, a normally tacky heat sealable wax composition on the surface of the substrate, and a non-blocking coating applied as a hot melt over the heat sealable layer which has good release properties with respect to itself and to the non-coated side of the substrate. The non-blocking coating melts at the heat sealing temperatures to allow the underlying heat sealable material to pass therethrough and complete the seal.Type: GrantFiled: April 17, 1978Date of Patent: April 1, 1980Assignee: American Can CompanyInventor: Dale C. Wiesman
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Patent number: 4195107Abstract: Plastic tile or similar items are disclosed having an adhesive backing suitable for adhesion to walls. The tiles are formulated from a vinyl chloride based resin and filler, and include a plasticizer of the formula: ##STR1## which R is a lower alkyl radical and R' is an aryl, aralkyl, or an alkaryl radical. A hot melt type pressure sensitive adhesive coating is provided on the plastic tile, the coating comprising a vinylic copolymer made of a minor portion of styrene units or derivatives thereof, and a major portion of butadiene, isoprene, or other similar units.Type: GrantFiled: April 26, 1978Date of Patent: March 25, 1980Assignee: GAF CorporationInventor: Walter C. Timm
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Patent number: 4194039Abstract: The multi-layer polyolefin shrink film of this invention provides shrink tensions, optical clarity, cuttability, sealability, shrink temperature range, and tear resistance heretofore unobtainable in an oriented, monolayer polyolefin material. The preferred film has three layers in which the core layer comprises a blend of ethylene-vinyl acetate copolymer with ethylene-butylene copolymer and each skin layer comprises ethylene-propylene copolymer.Type: GrantFiled: April 17, 1978Date of Patent: March 18, 1980Assignee: W. R. Grace & Co.Inventor: Walter B. Mueller
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Producing a continuous flexible sheet covering material for wrapping heat, cold and sound insulation
Patent number: 4188248Abstract: To insulate piping against passage of heat, cold and sound, there are used inter alia preformed insulating sleeves, wrapped glass or rock wool material etc. A continuous sheet-like, flexible covering material in the form of a semi-finished product is used for wrapping round the insulation, said product consisting of a multilayer laminate containing at least two layer groups, the first group forms the outer part of the sheet material when rolled up, and contains a supporting layer consisting of a kraft paper or the like with minor extensibility, and is covered on its outwardly facing surface with a polyethylene layer and similarly on its inner surface with a polyethylene or glue layer while the second group, that forms the inner part of the material when rolled up, contains a layer consisting of a highly extensible paper or the like, which is given a contracting tendency due to its striving to return to its original shape, by being given a high tensional load during manufacture.Type: GrantFiled: March 7, 1978Date of Patent: February 12, 1980Assignee: Orebro Pappersbruks ABInventors: Ulf J. Millgardh, Ulf W. Lindberg, Weimar A. Anneflod, Nils H. Werner, Bjorn Wimelius -
Patent number: 4188452Abstract: A heat reflecting pane comprises a substantially transparent glass substrate which has a layer of silicon oxide thereon and a layer of titanium dioxide in the rutile form on the side of the silicon oxide layer remote from the glass pane, the glass substrate having been toughened by heat treatment. The pane is formed by coating the glass substrate with a thin layer of silicon oxide, then applying a layer of titanium to the silicon oxide layer by vacuum deposition, the oxidizing the titanium at over 550.degree. C. to form titanium oxide in the rutile form.The silicon oxide layer prevents the rutile layer from becoming opaque when the pane is heated to the temperature necessary for heat treatment of the glass substrate, which may be during the heating step in which the titanium is oxidized or may be subsequently.Type: GrantFiled: October 6, 1977Date of Patent: February 12, 1980Assignee: BFG GlassgroupInventor: Rolf Groth
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Patent number: 4186233Abstract: A disposable composite comprising an absorbent, swellable film such as a lightly cross-linked polyacrylate, having on its two major surfaces a hydrophobic coating such as polyvinylidene chloride, is useful as a liner or packaging for disposable articles such as sanitary napkins. The hydrophobic coating protects the coated surfaces of the absorbent, swellable film from moisture, thereby maintaining the composite's integrity during use. Upon the composite's immersion in an aqueous fluid, the exposure of any uncoated film to water causes the composite to disintegrate, providing for easy flushability.Type: GrantFiled: March 27, 1978Date of Patent: January 29, 1980Assignee: The Dow Chemical CompanyInventors: Richard M. Krajewski, Robert E. Erickson
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Patent number: 4184000Abstract: A coupling element comprising elongate thermo-plastic strip material structured to provide that, on application thereto of heat in the range from about 300.degree. to about 500.degree. F. the outer portion thereof becomes fluidly adhesive, and is particularly adapted thereby to quickly form a ready bond and a clean seal between different materials, especially between glass and metal parts. While under the application of heat in the range specified, the outer portion of the element becomes fluidly adhesive, the inner or core portion of the element retains, as originally provided, an essentially stable form which accommodates and conforms to the contour of an applied load.On self cooling in place the strip coupling device provides a uniquely complete and extremely strong bond and seal between parts of unlike materials. In preferred embodiments and applications the invention provides for an improved installation of a window, windshield or like unit.Type: GrantFiled: March 23, 1978Date of Patent: January 15, 1980Inventor: Stephen A. Denman