Process Of Preparing A Cellular Product Of A Plastisol Of A Solid Polymer Derived Solely From Ethylenically Unsaturated Monomers; Forming A Plastisol Of A Solid Polymer Derived Solely From An Ethylenically Unsaturated Monomer Which Is Designed To Be Formed Into A Cellular Product, Or Composition Thereof Patents (Class 521/73)
-
Patent number: 5229428Abstract: The present invention provides a method of lining a plastic closure top with a thermoplastic, non-cross linked curable, vinyl chloride copolymer plastisol composition that is plasticized with an effective low temperature fusing amount of (A) an epoxidized natural oil, (B) an organic diglycidyl ether and (C) a curing agent for the diglycidyl ether, the plastisol being stable with a shelf life of at least about four months, the method including heating, without preheating, the lining and the closure top at a temperature not over about 300.degree. F. for about 90 to 120 seconds using convection heating without pressure and without conductive heating, to fuse the composition and thereafter solidifying the fused composition and thereafter cure the composition to provide the lining with tensile and elongation measurements sufficient for a stable closure assembly.Type: GrantFiled: March 25, 1991Date of Patent: July 20, 1993Assignee: Owens-Illinois Closure Inc.Inventor: John W. Bayer
-
Patent number: 5162380Abstract: Foamed articles of polyvinyl chloride resins are prepared by mixing an organic foaming agent having a temperature of foaming by decomposition of 100.degree. C. or above and a plasticizer with a polyvinyl chloride resin containing epoxy group which is formed into particles having an average diameter in the range from 0.05 to 5 .mu.m and has a concentration of the epoxy group at the surface of the particle of 1.times.10.sup.-2 weight % or more and a concentration of the total epoxy group in the particles of the said resin of 10 weight % or less at a temperature where the organic foaming agent does not decompose and coating or molding the mixed compound with foaming by heating.Foamed articles of polyvinyl chloride resins having excellent physical properties and high expansion ratios can be prepared without utilizing a crosslinking agent at the ambient pressure.Type: GrantFiled: April 24, 1992Date of Patent: November 10, 1992Assignee: Nippon Zeon Company LimitedInventors: Toshihiko Hori, Kazunori Ueki
-
Patent number: 5140053Abstract: A foamable polymer composition comprising[A] at least one cyclo-olefin resin selected from the group consisting of(A-1) ring-opened polymers derived from cyclo-olefins represented by the following general formula [I],(A-2) ring-opened copolymers derived from the cyclo-olefins of general formula [I],(A-3) hydrogenation products of the ring-opened polymers (A-1),(A-4) hydrogenation products of the ring-opened copolyers (A-2), and(A-5) addition polymers of the cycloolefins of general formula [I] with ethylene, and[B] a blowing agent, ##STR1## wherein n is 0 or a positive integer; R.sup.1 to R.sup.12, independently from each other, represent an atom or a group selected from the class consisting of a hydrogen atom, halogen atoms and hydrocarbon groups; R.sup.9 to R.sup.12 may be linked to each other to form a monocyclic or polycyclic hydrocarbon group; and R.sup.9 and R.sup.10, or R.sup.11 and R.sup.12 may each form an alkylidene group.Type: GrantFiled: February 20, 1990Date of Patent: August 18, 1992Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Yohzoh Yamamoto, Takasi Nakagawa
-
Patent number: 5137926Abstract: Polyaromatic fibers or microbeads which are swollen with solvent and crosslinked while swollen in such a way that the expanded, or macronet, structure of the swollen fiber or microbead is stabilized and retained even after drying exhibit high surface area and significant adsorptive capacity.Type: GrantFiled: May 8, 1991Date of Patent: August 11, 1992Assignee: Rohm and Haas CompanyInventors: Stephen G. Maroldo, Richard M. Kopchik, Eric J. Langenmayr
-
Patent number: 5107068Abstract: The present invention relates to a novel polyurethane resin, a foam prepared from the resin, a preparation process of the foam, and preparation process of a rigid polyurethane foam composite having a face material. The primary object of the present invention is to provide a rigid polyurethane foam and a rigid polyurethane foam composite fitted with a face material which are prepared by using a hydrochlorofluorocarbon foaming agent having very low public hazards such as ozone layer destruction and green house phenomenon of the earth.The above object can be achieved by using a combination of a polyether polyol initiated from a phenol resin with an alkanolamine or an aliphatic polyhydroxy compound in the production of rigid polyurethane foams.Foams thus obtained have equivalent properties to those of foams obtained by using chlorofluorocarbons (CFC) which are conventional foaming agents.Type: GrantFiled: April 27, 1990Date of Patent: April 21, 1992Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Satoshi Ozaki, Tsukuru Izukawa, Haruhiko Kawakami, Takayoshi Masuda, Seiji Esaki, Masayuki Kimura, Toshio Nozawa
-
Patent number: 5049590Abstract: A process in which a blowing agent dispersion medium is used for producing poly(vinyl chloride) that is particularly well suited for use in insulation covers and the insulation covers made from the resultant poly(vinyl chloride).Type: GrantFiled: January 9, 1990Date of Patent: September 17, 1991Assignee: Carol BotsolasInventors: Christos J. Botsolas, Terry C. Hayward
-
Patent number: 5037857Abstract: Polyaromatic fibers or microbeads which are swollen with solvent and crosslinked while swollen in such a way that the expanded, or macronet, structure of the swollen fiber or microbead is stabilized and retained even after drying exhibit high surface area and significant adsorptive capacity.Type: GrantFiled: August 28, 1989Date of Patent: August 6, 1991Assignee: Rohm and Haas CompanyInventors: Stephen G. Maroldo, Richard M. Kopchik, Eric J. Langenmayr
-
Patent number: 4956222Abstract: The present invention relates to a foamable vinyl chloride resin composition for powder molding containing a foaming agent and method for the production thereof.Type: GrantFiled: December 27, 1988Date of Patent: September 11, 1990Assignee: Sumitomo Chemical Company, LimitedInventors: Isao Matsuura, Akira Wakatsuki, Yuu Shida
-
Patent number: 4931478Abstract: Process for the preparation of an expandable vinyl plastisol capable of yielding cellular products containing a nitrogen-based blowing agent and a zinc salt as accelerator of decomposition of the blowing agent. The accelerator, which is preferably zinc chloride, is incorporated in the plastisol in the form of a solution in a liquid carrier.The process results in cellular products consisting of uniform fine cells without any major change in color.Type: GrantFiled: September 29, 1988Date of Patent: June 5, 1990Assignee: Solvay & Cie (Societe Anonyme)Inventor: Jean-Luc Preat
-
Patent number: 4485192Abstract: A container sealing composition made from a plastisol having a mass of hollow discrete microspheres incorporated therein. The composition is characterized by having increased shelf life, as manifested in reduced separation of the hollow discrete microspheres from the plastisol, and improved viscosity stability. The container sealing composition also exhibits uniform void volume which is essential for good sealability and seal quality.Type: GrantFiled: June 14, 1983Date of Patent: November 27, 1984Assignee: W. R. Grace & Co.Inventors: David A. Gibbs, Robert H. Hofeldt, Charles A. Billings
-
Patent number: 4477599Abstract: A method of preparing a foamable polyvinyl system resin composition which renders a non-flammable, high strength to weight ratio foam product comprises, reacting at least 0.05 parts by weight of an organic radical initiator per 1 part by weight of polyvinyl system resin with the components consisting essentially of (a) at least one polyvinyl system resin (b) 2-100 parts by weight of at least one inorganic filler per 1 part by weight of polyvinyl system resin (c) an effective amount of at least one blowing agent.Type: GrantFiled: November 8, 1982Date of Patent: October 16, 1984Assignee: Hirosuke KojimaInventors: Takayuki Otsu, Hirosuke Kojima
-
Patent number: 4454250Abstract: A blend is provided which is suitable for preparing low density cellular products of the closed cell type, said blend comprising a vinyl chloride resin, e.g., polyvinyl chloride; a butadiene rubber, e.g., butadiene-acrylonitrile; and a liquid polyfunctional or monofunctional monomer, e.g., styrene. Insulation products such as sheets or tubes (for pipe insulation) are easily fabricated by freely expanding (i.e., without employing forming molds) blends of the invention which contain heat-activatable blowing agents.Type: GrantFiled: June 27, 1983Date of Patent: June 12, 1984Assignee: Armstrong World Industries, Inc.Inventors: David M. Florence, Wayne E. Smith
-
Patent number: 4434251Abstract: This invention provides a method of continuously manufacturing a cross-linked polyvinyl chloride resin foam sheet which has a low density, uniformly fine cell, excellent thermal moldability and high heat resistance and is neither deformed nor deteriorated even by long storage characterized by uniformly kneading the polyvinyl chloride resin with a blowing agent, stabilizer, plasticizer and cross-linking promoter without causing the blowing agent to decompose itself, thereby providing an unfoamed kneaded composition in which the polyvinyl chloride resin is gelled and forming said composition into a continuing sheet, irradiating said sheet with ionizing radiation to cross-link the resin; and thermally foaming the cross-linked sheet.Type: GrantFiled: January 25, 1982Date of Patent: February 28, 1984Assignee: The Furukawa Electric Co., Ltd.Inventors: Junnosuke Sasajima, Hiroshi Nagai, Kenji Mogi, Akio Nojiri, Naonori Shiina
-
Patent number: 4430136Abstract: A process for preparing an open-cell structure from a vinyl chloride resin. The process includes mixing a vinyl chloride resin, stabilizer, plasticizer, surface active agent, azodicarbonamide and 4,4'-oxybisbenzenesulfonyl hydrazide to form a vinyl chloride resin paste. The vinyl chloride resin paste of step (a) is rendered alkaline, and mixed to form a uniformly-mixed paste. The paste is permitted to expand, and then heated to cause gelation.Type: GrantFiled: August 23, 1982Date of Patent: February 7, 1984Assignee: Lonseal CorporationInventors: Toshio Tsuchiya, Syuichi Moriizumi, Hisashi Takeda, Akinori Arai
-
Patent number: 4425449Abstract: A mixture of vinyl plastisol, suspension grade resin and expanded perlite is prepared in a manner such that the particles of perlite are not significantly damaged. The mixture is placed on a substrate and fused, thereby producing a foam-like material which is usable as a decorative covering. Alternatively, the mixture can be cast on a release surface and allowed to stand until the majority of the perlite particles have migrated to the top surface, thus leaving a layer of material containing substantially no perlite along the lower surface which interfaces with the release surface. Upon fusing this stratified mixture and separating the release surface, the fused material is inverted. The layer of material which contains substantially no perlite becomes the protective surface and the remaining portion of the fused material, which is foam-like in nature, becomes the resilient support. Such syntactic foams may be used as replacements or substitutes for mechanically frothed or chemically blown foams.Type: GrantFiled: April 19, 1982Date of Patent: January 10, 1984Assignee: Armstrong World Industries, Inc.Inventor: William C. Dorsey
-
Patent number: 4425442Abstract: A process for producing an open cell foam comprising the steps of:(a) forming a compound comprising polyvinyl chloride resin produced by suspension polymerization, at least one organic stabilizer containing at least one Group I metal and at least one organic stabilizer containing at least one Group II metal, at least one surface active agent, and a heat decomposable blowing agent; and(b) heating the compound to decompose the blowing agent thereby producing the foam.A foamable compound comprising polyvinyl chloride resin produced by suspension polymerization, at least one organic stabilizer containing at least one Group I metal and at least one organic stabilizer containing at least one Group II metal, at least one surface active agent, and a heat decomposable blowing agent.The foam formed exhibits high breathability as well as a high water permeability when desired.Type: GrantFiled: November 15, 1982Date of Patent: January 10, 1984Assignee: Lonseal CorporationInventors: Akira Sato, Tatsuo Waki
-
Patent number: 4423110Abstract: A process for producing an open cell foam. The process comprises mixing a polyvinyl chloride composition, plasticizer, at least one stabilizer, and a foaming agent to form a blend; gelling the blend; forming the gelled blend into a sheet; and heating the sheet to decompose the foaming agent thereby forming the open cell foam. The sheet formed by the process. The process for forming an intermediate used in the process and the intermediate itself.Type: GrantFiled: March 27, 1980Date of Patent: December 27, 1983Assignee: Lonseal Kogyo Co., Ltd.Inventor: Akira Sato
-
Patent number: 4423161Abstract: Pressure vessels are disclosed for containing a foamable mixture of liquid and a blowing agent for incrementally or continuously dispensing a foam of constant foam-volume ratio. Liquid compositions having coating or polymeric solids are capable of being foamed and dispensed with the apparatus. The method and apparatus are especially advantageous in dispensing foamed coatings, paints or adhesives with superior control.Type: GrantFiled: May 11, 1981Date of Patent: December 27, 1983Assignee: Nordson CorporationInventors: Walter H. Cobbs, Jr., William R. Rehman
-
Patent number: 4384048Abstract: The present invention relates to a composition comprising a blowing agent and an activator characterized in that the blowing agent and activator have been micronized together rather than separately as hitherto; to methods for making the composition and to the use of the compositions in expanding polymers.Type: GrantFiled: July 7, 1982Date of Patent: May 17, 1983Assignee: FBC LimitedInventor: Raymond J. Bathgate
-
Patent number: 4381962Abstract: A process for producing an open cell foam comprising the steps of:(a) forming a compound comprising polyvinyl chloride resin produced by suspension polymerization, at least one organic stabilizer containing at least one Group I metal and at least one organic stabilizer containing at least one Group II metal, at least one surface active agent, and a heat decomposable blowing agent; and(b) heating the compound to decompose the blowing agent thereby producing the foam.A foamable compound comprising polyvinyl chloride resin produced by suspension polymerization, at least one organic stabilizer containing at least one Group I metal and at least one organic stabilizer containing at least one Group II metal, at least one surface active agent, and a heat decomposable blowing agent.The foam formed exhibits high breathability as well as a high water permeability when desired.Type: GrantFiled: November 28, 1980Date of Patent: May 3, 1983Assignee: Lonseal CorporationInventors: Akira Sato, Tatsuo Waki
-
Patent number: 4369126Abstract: The present invention relates to a composition comprising a blowing agent and an activator characterised in that the blowing agent and activator have been micronised together rather than separately as hitherto; to methods for making the composition and to the use of the compositions in expanding polymers.Type: GrantFiled: March 20, 1981Date of Patent: January 18, 1983Assignee: FBC LimtedInventor: Raymond J. Bathgate
-
Patent number: 4301119Abstract: Pressure vessels are disclosed for containing a foamable mixture of liquid and a blowing agent for incrementally or continuously dispensing a foam of constant foam-volume ratio. Liquid compositions having coating or polymeric solids are capable of being foamed and dispensed with the apparatus. The method and apparatus are especially advantageous in dispensing foamed coatings, paints or adhesives with superior control.Type: GrantFiled: February 28, 1979Date of Patent: November 17, 1981Assignee: Nordson CorporationInventors: Walter H. Cobbs, Jr., William R. Rehman
-
Patent number: 4241192Abstract: Cellular polyvinyl chloride products of good cell quality are made utilizing a lower fusion temperature than conventionally employed by incorporating in a polyvinyl chloride containing plastisol, which has a fusion temperature of from about 220.degree. F. to about 300.degree. F., an effective amount of a blowing agent selected from the group consisting of (1) a mixture of benzene sulfonyl hydrazide and 4,4'-oxybis (benzene sulfonyl hydrazide), (2) a mixture of toluene sulfonyl hydrazide and 4,4'-oxybis (benzene sulfonyl hydrazide), and (3) 4,4'-oxybis (benzene sulfonyl hydrazide) alone, and an organic base or oxidizing agent which acts as an activator for said blowing agent.Type: GrantFiled: March 8, 1978Date of Patent: December 23, 1980Assignee: Stauffer Chemical CompanyInventor: Jagadish C. Goswami
-
Patent number: 4237239Abstract: Reticulated polyvinyl chloride plastisol foams which can be produced using mechanical frothing techniques are disclosed. These reticulated foams are sufficiently open or porous to facilitate screen printing with plastisol inks to produce thru color, decorative, cushioned floor coverings.Type: GrantFiled: November 5, 1979Date of Patent: December 2, 1980Assignee: Armstrong Cork CompanyInventor: George L. Lilley
-
Patent number: 4226943Abstract: This invention provides a foamable composition of vinyl chloride polymers comprising a vinyl chloride polymer, a plasticizer, a synthetic hydrocarbon wax, an alkali metal-zinc stabilizer and a decomposable organic blowing agent; and a method of producing an open cell sheet of vinyl chloride polymers comprising shaping the foamable composition into a sheet-like body and heating the resulting shaped body.Type: GrantFiled: November 21, 1978Date of Patent: October 7, 1980Assignee: Otsuka Kagaku Yakuhin Kabushiki KaishaInventors: Normitsu Tsurushige, Toshinori Takao, Shinichi Yamada
-
Patent number: 4225643Abstract: Reticulated polyvinyl chloride plastisol foams which can be produced using mechanical frothing techniques are disclosed. These reticulated foams are sufficiently open or porous to facilitate screen printing with plastisol inks to produce thru color, decorative, cushioned floor coverings.Type: GrantFiled: October 23, 1978Date of Patent: September 30, 1980Assignee: Armstrong Cork CompanyInventor: George L. Lilley
-
Patent number: 4210567Abstract: Subject of this invention are plastisols based on selected plasticizers and on polymers of certain acrylic or methacrylic monomers, viz. mainly (i) t-butyl acrylate, a C.sub.1-4 alkyl, especially methyl, acrylate or cyclohexyl methacrylate, and optionally also (ii) one or more comonomers selected from methacrylates of aliphatic C.sub.2 to C.sub.10 alcohols, acrylates of aliphatic C.sub.1 to C.sub.10 alcohols, styrene and alpha-methyl styrene. The glass transition temperature of the polymer is above 35.degree. C., its average degree of polymerization more than 400 and its average particle size in the plastisol is 0.1 to 500 microns.Type: GrantFiled: February 27, 1978Date of Patent: July 1, 1980Assignee: Teroson G.m.b.H.Inventor: Bernhard Kosters
-
Patent number: 4102828Abstract: Covers a method of producing polyurethanes formed as the reaction product of polyisocyanates and an alkoxylated novolak. Said novolak is the condensation product of a monohydric phenol and a 1,3-dioxane falling within the following structural formula: ##STR1## where R is selected from the group consisting of phenyl, substituted phenyl and gem dialkyl, and R.sub.1 is selected from the group consisting of hydrogen, alkyl, phenyl, and substituted phenyl. Also covers polyurethanes derived therefrom, and particularly rigid polyurethane foams.Type: GrantFiled: April 28, 1976Date of Patent: July 25, 1978Assignee: Texaco Development CorporationInventor: Howard P. Klein