Patents Examined by Thomas De Benedictis
-
Patent number: 4162995Abstract: Decomposiing polyurethane foams by treating such polyurethane materials with ammonia or ammonium hydroxide, preferably in the presence of a suitable organic solvent such as a glycol or polyol, or the decomposition product of a polyurethane. Treatment of the polyurethane material with ammonia or ammonium hydroxide, particularly in combination with such solvent, is carried out preferably at elevated temperature, and results in decomposition of the polyurethane. The resulting reaction product containing polyol fragments from such decomposition or depolymerization, can be incorporated with fresh polyurethane reactants, including polyisocyanate, or polyol and polyisocyanate, to produce new urethane polymer, thus permitting recovery and re-use of otherwise useless scrap polyurethane materials.Type: GrantFiled: July 1, 1976Date of Patent: July 31, 1979Inventor: Martin B. Sheratte
-
Patent number: 4160791Abstract: Polycarbonate membranes useful for hemodialysis are fabricated from polyether-polycarbonate block copolymers by a water gelation process. The process comprises casting onto a substrate surface a layer of a multicomponent casting solution comprising the copolymer dissolved in a water-miscible organic solvent together with a cosolvent which acts as a swelling agent for the copolymer, drying the layer to partially evaporate the solvents therefrom, immersing the partially dried layer in water to form a gelled membrane, and stripping the gelled membrane from the substrate surface. The membrane has improved strength and improved permeability to solutes in the "middle molecule" range while maintaing clinically acceptable ultrafiltration rates and clearance of low molecular weight solutes.Type: GrantFiled: January 30, 1978Date of Patent: July 10, 1979Assignee: The United States of America as represented by the Secretary of the Department of Health, Education and WelfareInventors: Willard S. Higley, Paul A. Cantor, Bruce S. Fisher
-
Patent number: 4157360Abstract: A composition is described, useful as a thermoformable polymer, for producing shaped articles having high yield and impact strengths, good heat resistance, and good solvent resistance. The composition, which is cured, contains a crosslinked polycyanurate network polymer in which a high molecular weight thermoplastic polymer, such as a polyestercarbonate, is finely dispersed. The composition possesses a Vicat softening temperature (ASTM 1525) of at least about 10.degree. C. above that of said thermoplastic polymer alone, and an elongation-at-break value (ASTM D-638, at room temperature) at least twice that of said crosslinked polymer alone. Due to the high yield strength, lighter structural articles and components can be fabricated from the composition possessing high structural strength.Type: GrantFiled: April 26, 1978Date of Patent: June 5, 1979Assignee: Allied Chemical CorporationInventors: Dusan C. Prevorsek, Daniel C. Chung
-
Patent number: 4153644Abstract: A novel resin composition improved in moldability and impact resistance, comprising (A) a polyphenylene oxide having a molecular weight of 5,000 or higher, (B) an aromatic hydrocarbon-formaldehyde resin or a modified aromatic hydrocarbon-formaldehyde resin, and, if necessary, (C) a rubbery polymer, the weight ratio of the resin (A) to the resin (B) being from 10:90 to 99:1 and the amount of the rubbery polymer (C) being 3 to 40 parts by weight per 100 parts by weight of the sum of the resins (A) and (B). This resin composition has excellent mechanical and electrical properties of the polyphenylene oxide together with an improved moldability, impact resistance, and adhesiveness.Type: GrantFiled: December 15, 1975Date of Patent: May 8, 1979Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Akitoshi Sugio, Masanobu Masu, Masaharu Kimura, Norio Sayama, Keiun Ko, Eiichi Yonemitsu
-
Patent number: 4151223Abstract: Fibers and filaments of linear thermoplastic polyesters, containing halogen-containing flameproofing agents and synergistic agents therefor, in which the flameproofing agents are chlorinated and/or brominated oligomeric styrenes. The fibers and filaments of the invention are used for the manufacture of textiles of low flammability.Type: GrantFiled: September 14, 1977Date of Patent: April 24, 1979Assignee: BASF AktiengesellschaftInventors: Rainer Neuberg, Klaus Penzien, Hans G. Matthies
-
Patent number: 4148702Abstract: Composite scrap materials having one or more polymer components and a fabric component are rendered reprocessable by subjecting them to high energy radiation at a dose sufficient to selectively degrade at least one component of the material leaving the other component or components substantially unchanged.Type: GrantFiled: August 11, 1975Date of Patent: April 10, 1979Assignee: Nylex Corporation LimitedInventor: Maxwell J. Lane
-
Patent number: 4147739Abstract: Thermoplastic molding compositions are disclosed which comprise an intimate admixture of (i) from about 5 to about 95 parts by weight of a rubber-modified copolymer of a vinyl aromatic compound and an .alpha.,.beta.-unsaturated cyclic anhydride, (ii) from about 30 to about 1 parts by weight of a block or graft copolymer of a vinyl aromatic compound and a conjugated diene, and (iii) from 0 to about 95 parts by weight of a polyphenylene ether resin.Type: GrantFiled: May 26, 1978Date of Patent: April 3, 1979Assignee: General Electric CompanyInventor: Gim F. Lee, Jr.
-
Patent number: 4145373Abstract: Polycarbonates suitable for forming molded articles are comprised of a polycarbonate resin and 0.25 to 0.75 parts by weight per 100 parts of polycarbonate of an ethylene-vinylacetate copolymer. The articles molded from the polycarbonate resin with the ethylene-vinylacetate copolymer therein exhibit improved stress crack resistance.Type: GrantFiled: February 9, 1976Date of Patent: March 20, 1979Assignee: Mobay Chemical CorporationInventors: Arthur L. Baron, Parameswar Sivaramakrishnan
-
Patent number: 4144209Abstract: Improved stable, aqueous resin compositions comprising from about 0.1% to about 60% by weight on a solids basis of a synthetic resin and from about 0.01% by weight to about 6% by weight, based on the weight of the synthetic resin, of an aluminum chlorhydroxide complex from the group consisting of: (a) aluminum chlorhydroxides; (b) reaction products of aluminum chlorhydroxides and polyhydroxy compounds; (c) reaction products of aluminum chlorhydroxides and monocarboxylic acids; (d) and mixtures thereof; and methods of utilizing the same.Type: GrantFiled: November 12, 1975Date of Patent: March 13, 1979Assignee: Johnson & JohnsonInventors: Arthur H. Drelich, George J. Lukacs
-
Patent number: 4143093Abstract: Textile fibers and articles having increased dye affinity are prepared by spinning a mixture of 85-97% by weight of poly(ethylene terephthalate) or poly(1,4-cyclohexylenedimethylene terephthalate) and 3-15% by weight of poly(ethylene dodecanedioate) and aftertreating the spun threads in a conventional spun threads in a conventional way.Type: GrantFiled: March 23, 1978Date of Patent: March 6, 1979Assignee: Chemische Werke Huls AGInventor: Jorn Ruter
-
Patent number: 4141928Abstract: Fiber forming polyesters are modified by the incorporation in the chain of hydantoin derivatives having polyalkoxylated groups linked to the ring nitrogens. These polyesters exhibit desirable properties such as improved dyeability, thermal oxidative stability, light stability and dyed light fastness.Type: GrantFiled: January 11, 1978Date of Patent: February 27, 1979Assignee: Monsanto CompanyInventor: Ernest L. Lawton, II
-
Patent number: 4140730Abstract: A polycarbonate film having improved flame resistance and good stress-corrosion-cracking resistance is prepared from a solution of a mixture of a low molecular weight polycarbonate containing at least about 5% by weight halogen and a higher molecular weight polycarbonate prepared from bisphenol containing at least 90 mol percent bisphenol A. The novel film can be used to advantage for self-supporting electrical insulating films.Type: GrantFiled: June 26, 1978Date of Patent: February 20, 1979Assignee: Bayer AktiengesellschaftInventors: Rudolph Binsack, Manfred Grundmeier, Eckart Reese, Hugo Vernaleken
-
Patent number: 4138385Abstract: This invention relates to an improvement in a process for curing unsaturated polyester resins, preferably chemically thickened with a Group II metal oxide or hydroxide, and to the resulting product. The improvement resides in the use of an acetylacetonate ligand of cobalt III, which is mono, di, or tri-substituted with an electron withdrawing group, e.g. a nitro, phenyl or halogen atom.Type: GrantFiled: September 2, 1977Date of Patent: February 6, 1979Assignee: Air Products and Chemicals, Inc.Inventors: Melville W. Uffner, Donald E. Jefferson, Charles G. Coe, Burton D. Beitchman
-
Patent number: 4137280Abstract: This invention relates to a polyvinyl chloride composition having blended therein from about 5-60% of a polyalkylene carbonate formed by reacting an alkylene oxide and carbon dioxide. The polyalkylene carbonate is added to improve the melt flow indices and oxygen barrier characteristics of the polyvinyl chloride.Type: GrantFiled: April 19, 1978Date of Patent: January 30, 1979Assignee: Air Products and Chemicals, Inc.Inventors: Dale D. Dixon, Michael E. Ford
-
Patent number: 4137279Abstract: Mixtures of the unsaturated maleic anhydride modified adduct of a polycaprolactone polyol and an ethylenically unsaturated monomer are copolymerized. The resulting polymers are useful as coatings or in the production of films and shaped molded articles.Type: GrantFiled: December 27, 1977Date of Patent: January 30, 1979Assignee: Union Carbide CorporationInventors: Oliver W. Smith, Joseph V. Koleske
-
Patent number: 4136073Abstract: Disclosed is a composition and process useful for improving the corrosion resistance and/or paint adhesion of an aluminum surface. The composition is an aqueous acidic one containing an organic film-forming polymer and a titanium compound in a weight ratio of polymer : Ti of 100 : 1 to 1 : 10. The aluminum surface is contacted with the composition at a temperature not in excess of 70.degree. C.Type: GrantFiled: December 22, 1975Date of Patent: January 23, 1979Assignee: Oxy Metal Industries CorporationInventors: Kakuro Muro, Kuniji Yashiro, Hideaki Kaneko, Kiyoichi Yamazaki
-
Patent number: 4132749Abstract: Vinyl chloride series resin compositions comprising (a) 90 to 50 parts by weight vinyl chloride series resins and (b) 10 to 50 parts by weight of graft polymers obtained by polymerizing (i) 20 to 65 weight percent butadiene series rubber, (ii) 20 to 50 weight percent vinyl aromatic hydrocarbon, (ii) 10 to 50 weight percent methyl methacrylate, (iii) 2 to 50 weight percent acrylic ester, and (iv) 0 to 40 weight percent acrylonitrile.Type: GrantFiled: June 25, 1976Date of Patent: January 2, 1979Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Ichiro Saito, Kazuo Saito
-
Patent number: 4131636Abstract: A cross-linkable vinyl chloride resin composition comprising as indispensable components 100 parts by weight of a vinyl chloride resin, 5.0 to 80 parts by weight of an organic peroxide-cross-linkable elastomer, 0.1 to 5.0 parts by weight of an anti-scorching agent, 1 to 4 parts by weight of a polymerizable compound having at least two double bonds and 0.05 to 5.0 parts by weight of an organic peroxide.Type: GrantFiled: December 28, 1977Date of Patent: December 26, 1978Assignee: Dainippon Ink & Chemicals Inc.Inventors: Yasuhiro Matsumoto, Hisanori Eguchi
-
Patent number: 4131637Abstract: A process for preparing a polymeric material grafted throughout its bulk is provided. A polymer having finely divided particles is blended with silica and maintained in a fluidized bed. The polymer is activated by passing ozone uniformly through the blend to initiate incipient labile sites in the molecular structure of the polymer. The polymer is then reacted with an ethylenically unsaturated ionogenic monomer to graft polymerize the monomer onto the polymer. The grafted polymer may then be converted to a salt form by reacting with alkaline compounds. The resultant powders can be fused into any desired shape by conventional polymer plastic processes.Type: GrantFiled: March 23, 1977Date of Patent: December 26, 1978Assignee: ESB IncorporatedInventors: Philip Bernstein, James P. Coffey, Alan E. Varker
-
Patent number: 4131598Abstract: Polyphenylene ether compositions are disclosed which comprise a polyphenylene ether resin and a copolymer of a vinyl aromatic compound and an .alpha., .beta.-unsaturated cyclic anhydride.Type: GrantFiled: March 29, 1976Date of Patent: December 26, 1978Assignee: General Electric CompanyInventors: Visvaldis Abolins, Gim F. Lee, Jr.